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  2025 (1)
Enhancing rPPG pulse-signal recovery by facial sampling and PSD Clustering. Boccignone, G.; Conte, D.; Cuculo, V.; D'Amelio, A.; Grossi, G.; and Lanzarotti, R. Biomed. Signal Process. Control., 101: 107158. 2025.
Enhancing rPPG pulse-signal recovery by facial sampling and PSD Clustering [link]Paper   doi   link   bibtex  
  2024 (7)
CliffPhys: Camera-Based Respiratory Measurement Using Clifford Neural Networks. Ghezzi, O.; Boccignone, G.; Grossi, G.; Lanzarotti, R.; and D'Amelio, A. In Leonardis, A.; Ricci, E.; Roth, S.; Russakovsky, O.; Sattler, T.; and Varol, G., editor(s), Computer Vision - ECCV 2024 - 18th European Conference, Milan, Italy, September 29-October 4, 2024, Proceedings, Part LXXXV, volume 15143, of Lecture Notes in Computer Science, pages 221–238, 2024. Springer
CliffPhys: Camera-Based Respiratory Measurement Using Clifford Neural Networks [link]Paper   doi   link   bibtex  
Trends, Applications, and Challenges in Human Attention Modelling. Cartella, G.; Cornia, M.; Cuculo, V.; D'Amelio, A.; Zanca, D.; Boccignone, G.; and Cucchiara, R. In Proceedings of the Thirty-Third International Joint Conference on Artificial Intelligence, IJCAI 2024, Jeju, South Korea, August 3-9, 2024, pages 7971–7979, 2024. ijcai.org
Trends, Applications, and Challenges in Human Attention Modelling [link]Paper   link   bibtex  
One to Rule Them All: Natural Language to Bind Communication, Perception and Action. Colombani, S.; Ognibene, D.; and Boccignone, G. In Aineto, D.; Benedictis, R. D.; Maratea, M.; Mittelmann, M.; Monaco, G.; Scala, E.; Serafini, L.; Serina, I.; Spegni, F.; Tosello, E.; Umbrico, A.; and Vallati, M., editor(s), Proceedings of the International Workshop on Artificial Intelligence for Climate Change, Italian Workshop on Planning and Scheduling, RCRA Workshop on Experimental evaluation of algorithms for solving problems with combinatorial explosion, and SPIRIT Workshop on Strategies, Prediction, Interaction, and Reasoning in Italy (AI4CC-IPS-RCRA-SPIRIT 2024) co-located with 23rd International Conference of the Italian Association for Artificial Intelligence AIxIA 2024, November 25-28th, 2024, Bolzano, Italy, volume 3883, of CEUR Workshop Proceedings, 2024. CEUR-WS.org
One to Rule Them All: Natural Language to Bind Communication, Perception and Action [pdf]Paper   link   bibtex  
Trends, Applications, and Challenges in Human Attention Modelling. Cartella, G.; Cornia, M.; Cuculo, V.; D'Amelio, A.; Zanca, D.; Boccignone, G.; and Cucchiara, R. CoRR, abs/2402.18673. 2024.
Trends, Applications, and Challenges in Human Attention Modelling [link]Paper   doi   link   bibtex  
TPP-Gaze: Modelling Gaze Dynamics in Space and Time with Neural Temporal Point Processes. D'Amelio, A.; Cartella, G.; Cuculo, V.; Lucchi, M.; Cornia, M.; Cucchiara, R.; and Boccignone, G. CoRR, abs/2410.23409. 2024.
TPP-Gaze: Modelling Gaze Dynamics in Space and Time with Neural Temporal Point Processes [link]Paper   doi   link   bibtex  
Time is on my sight: scene graph filtering for dynamic environment perception in an LLM-driven robot. Colombani, S.; Brini, L.; Ognibene, D.; and Boccignone, G. CoRR, abs/2411.15027. 2024.
Time is on my sight: scene graph filtering for dynamic environment perception in an LLM-driven robot [link]Paper   doi   link   bibtex  
One to rule them all: natural language to bind communication, perception and action. Colombani, S.; Ognibene, D.; and Boccignone, G. CoRR, abs/2411.15033. 2024.
One to rule them all: natural language to bind communication, perception and action [link]Paper   doi   link   bibtex  
  2023 (11)
Wuthering heights: gauging fear at altitude in virtual reality. Boccignone, G.; Gadia, D.; Maggiorini, D.; Ripamonti, L. A.; and Tosto, V. Multim. Tools Appl., 82(4): 5207–5228. 2023.
Wuthering heights: gauging fear at altitude in virtual reality [link]Paper   doi   link   bibtex  
An Evaluation of Non-Contact Photoplethysmography-Based Methods for Remote Respiratory Rate Estimation. Boccignone, G.; D'Amelio, A.; Ghezzi, O.; Grossi, G.; and Lanzarotti, R. Sensors, 23(7): 3387. 2023.
An Evaluation of Non-Contact Photoplethysmography-Based Methods for Remote Respiratory Rate Estimation [link]Paper   doi   link   bibtex  
Using Gaze for Behavioural Biometrics. D'Amelio, A.; Patania, S.; Bursic, S.; Cuculo, V.; and Boccignone, G. Sensors, 23(3): 1262. 2023.
Using Gaze for Behavioural Biometrics [link]Paper   doi   link   bibtex   1 download  
Inferring Causal Factors of Core Affect Dynamics on Social Participation through the Lens of the Observer. D'Amelio, A.; Patania, S.; Bursic, S.; Cuculo, V.; and Boccignone, G. Sensors, 23(6): 2885. 2023.
Inferring Causal Factors of Core Affect Dynamics on Social Participation through the Lens of the Observer [link]Paper   doi   link   bibtex  
FabricTouch: A Multimodal Fabric Assessment Touch Gesture Dataset to Slow Down Fast Fashion. Olugbade, T. A.; Lin, L.; Sansoni, A.; Warawita, N.; Gan, Y.; Wei, X.; Petreca, B.; Boccignone, G.; Atkinson, D.; Cho, Y.; Baurley, S.; and Bianchi-Berthouze, N. In 11th International Conference on Affective Computing and Intelligent Interaction, ACII 2023, Cambridge, MA, USA, September 10-13, 2023, pages 1–8, 2023. IEEE
FabricTouch: A Multimodal Fabric Assessment Touch Gesture Dataset to Slow Down Fast Fashion [link]Paper   doi   link   bibtex  
Tracing Stress and Arousal in Virtual Reality Games Using Players' Motor and Vocal Behaviour. Brambilla, S.; Boccignone, G.; Borghese, N. A.; Chitti, E.; Lombardi, R.; and Ripamonti, L. A. In da Silva, H. P.; and Cipresso, P., editor(s), Computer-Human Interaction Research and Applications - 7th International Conference, CHIRA 2023, Rome, Italy, November 16-17, 2023, Proceedings, Part I, volume 1996, of Communications in Computer and Information Science, pages 163–186, 2023. Springer
Tracing Stress and Arousal in Virtual Reality Games Using Players' Motor and Vocal Behaviour [link]Paper   doi   link   bibtex  
Tuning Stressful Experience in Virtual Reality Games. Brambilla, S.; Boccignone, G.; Borghese, N. A.; Croci, D.; and Ripamonti, L. A. In Gena, C.; Russis, L. D.; Spano, L. D.; Lanzilotti, R.; Mascio, T. D.; Prandi, C.; and Andolina, S., editor(s), Proceedings of the 15th Biannual Conference of the Italian SIGCHI Chapter, CHItaly 2023, Torino, Italy, September 20-22, 2023, pages 27:1–27:8, 2023. ACM
Tuning Stressful Experience in Virtual Reality Games [link]Paper   doi   link   bibtex   1 download  
StrEx: Towards a Modulator of Stressful Experience in Virtual Reality Games. Brambilla, S.; Boccignone, G.; Borghese, N. A.; Croci, D.; and Ripamonti, L. A. In IEEE Conference on Games, CoG 2023, Boston, MA, USA, August 21-24, 2023, pages 1–4, 2023. IEEE
StrEx: Towards a Modulator of Stressful Experience in Virtual Reality Games [link]Paper   doi   link   bibtex  
On Using rPPG Signals for DeepFake Detection: A Cautionary Note. D'Amelio, A.; Lanzarotti, R.; Patania, S.; Grossi, G.; Cuculo, V.; Valota, A.; and Boccignone, G. In Foresti, G. L.; Fusiello, A.; and Hancock, E. R., editor(s), Image Analysis and Processing - ICIAP 2023 - 22nd International Conference, ICIAP 2023, Udine, Italy, September 11-15, 2023, Proceedings, Part II, volume 14234, of Lecture Notes in Computer Science, pages 235–246, 2023. Springer
On Using rPPG Signals for DeepFake Detection: A Cautionary Note [link]Paper   doi   link   bibtex  
Pain Classification and Intensity Estimation Through the Analysis of Facial Action Units. Paolì, F.; D'Eusanio, A.; Cozzi, F.; Patania, S.; and Boccignone, G. In Foresti, G. L.; Fusiello, A.; and Hancock, E. R., editor(s), Image Analysis and Processing - ICIAP 2023 Workshops - Udine, Italy, September 11-15, 2023, Proceedings, Part I, volume 14365, of Lecture Notes in Computer Science, pages 229–241, 2023. Springer
Pain Classification and Intensity Estimation Through the Analysis of Facial Action Units [link]Paper   doi   link   bibtex  
Pain and Fear in the Eyes: Gaze Dynamics Predicts Social Anxiety from Fear Generalisation. Patania, S.; D'Amelio, A.; Cuculo, V.; Limoncini, M.; Ghezzi, M.; Conversano, V.; and Boccignone, G. In Foresti, G. L.; Fusiello, A.; and Hancock, E. R., editor(s), Image Analysis and Processing - ICIAP 2023 Workshops - Udine, Italy, September 11-15, 2023, Proceedings, Part I, volume 14365, of Lecture Notes in Computer Science, pages 133–144, 2023. Springer
Pain and Fear in the Eyes: Gaze Dynamics Predicts Social Anxiety from Fear Generalisation [link]Paper   doi   link   bibtex  
  2022 (4)
pyVHR: a Python framework for remote photoplethysmography. Boccignone, G.; Conte, D.; Cuculo, V.; D'Amelio, A.; Grossi, G.; Lanzarotti, R.; and Mortara, E. PeerJ Comput. Sci., 8: e929. 2022.
pyVHR: a Python framework for remote photoplethysmography [link]Paper   doi   link   bibtex   2 downloads  
Between the Buttons: Stress Assessment in Video Games using Players' Behavioural Data. Brambilla, S.; Boccignone, G.; Borghese, N. A.; and Ripamonti, L. A. In da Silva, H. P.; Vanderdonckt, J.; Holzinger, A.; and Constantine, L. L., editor(s), Proceedings of the 6th International Conference on Computer-Human Interaction Research and Applications, CHIRA 2022, Valletta, Malta, October 27-28, 2022, pages 59–69, 2022. SCITEPRESS
Between the Buttons: Stress Assessment in Video Games using Players' Behavioural Data [link]Paper   doi   link   bibtex  
DeepFakes Have No Heart: A Simple rPPG-Based Method to Reveal Fake Videos. Boccignone, G.; Bursic, S.; Cuculo, V.; D'Amelio, A.; Grossi, G.; Lanzarotti, R.; and Patania, S. In Sclaroff, S.; Distante, C.; Leo, M.; Farinella, G. M.; and Tombari, F., editor(s), Image Analysis and Processing - ICIAP 2022 - 21st International Conference, Lecce, Italy, May 23-27, 2022, Proceedings, Part II, volume 13232, of Lecture Notes in Computer Science, pages 186–195, 2022. Springer
DeepFakes Have No Heart: A Simple rPPG-Based Method to Reveal Fake Videos [link]Paper   doi   link   bibtex   1 download  
Deep graph neural network for video-based facial pain expression assessment. Patania, S.; Boccignone, G.; Bursic, S.; D'Amelio, A.; and Lanzarotti, R. In Hong, J.; Bures, M.; Park, J. W.; and Cern'y, T., editor(s), SAC '22: The 37th ACM/SIGAPP Symposium on Applied Computing, Virtual Event, April 25 - 29, 2022, pages 585–591, 2022. ACM
Deep graph neural network for video-based facial pain expression assessment [link]Paper   doi   link   bibtex  
  2021 (3)
Gazing at Social Interactions Between Foraging and Decision Theory. D'Amelio, A.; and Boccignone, G. Frontiers Neurorobotics, 15: 639999. 2021.
Gazing at Social Interactions Between Foraging and Decision Theory [link]Paper   doi   link   bibtex   6 downloads  
Visual Features and Their Own Optical Flow. Betti, A.; Boccignone, G.; Faggi, L.; Gori, M.; and Melacci, S. Frontiers Artif. Intell., 4: 768516. 2021.
Visual Features and Their Own Optical Flow [link]Paper   doi   link   bibtex  
Predicting Real Fear of Heights Using Virtual Reality. Boccignone, G.; Gadia, D.; Maggiorini, D.; Ripamonti, L. A.; and Tosto, V. In Gaggi, O.; Manzoni, P.; and Palazzi, C. E., editor(s), GoodIT '21: Conference on Information Technology for Social Good, Roma, Italy, September 9-11, 2021, pages 103–108, 2021. ACM
Predicting Real Fear of Heights Using Virtual Reality [link]Paper   doi   link   bibtex   4 downloads  
  2020 (3)
An Open Framework for Remote-PPG Methods and Their Assessment. Boccignone, G.; Conte, D.; Cuculo, V.; D'Amelio, A.; Grossi, G.; and Lanzarotti, R. IEEE Access, 8: 216083–216103. 2020.
An Open Framework for Remote-PPG Methods and Their Assessment [link]Paper   doi   link   bibtex   8 downloads  
On Gaze Deployment to Audio-Visual Cues of Social Interactions. Boccignone, G.; Cuculo, V.; D'Amelio, A.; Grossi, G.; and Lanzarotti, R. IEEE Access, 8: 161630–161654. 2020.
On Gaze Deployment to Audio-Visual Cues of Social Interactions [link]Paper   doi   link   bibtex   4 downloads  
Stairway to Elders: Bridging Space, Time and Emotions in Their Social Environment for Wellbeing. Boccignone, G.; de'Sperati , C.; Granato, M.; Grossi, G.; Lanzarotti, R.; Noceti, N.; and Odone, F. In Marsico, M. D.; di Baja, G. S.; and Fred, A. L. N., editor(s), Proceedings of the 9th International Conference on Pattern Recognition Applications and Methods, ICPRAM 2020, Valletta, Malta, February 22-24, 2020, pages 548–554, 2020. SCITEPRESS
Stairway to Elders: Bridging Space, Time and Emotions in Their Social Environment for Wellbeing [link]Paper   doi   link   bibtex   5 downloads  
  2019 (3)
How to Look Next? A Data-Driven Approach for Scanpath Prediction. Boccignone, G.; Cuculo, V.; and D'Amelio, A. In Sekerinski, E.; Moreira, N.; Oliveira, J. N.; Ratiu, D.; Guidotti, R.; Farrell, M.; Luckcuck, M.; Marmsoler, D.; Campos, J. C.; Astarte, T.; Gonnord, L.; Cerone, A.; Couto, L.; Dongol, B.; Kutrib, M.; Monteiro, P.; and Delmas, D., editor(s), Formal Methods. FM 2019 International Workshops - Porto, Portugal, October 7-11, 2019, Revised Selected Papers, Part I, volume 12232, of Lecture Notes in Computer Science, pages 131–145, 2019. Springer
How to Look Next? A Data-Driven Approach for Scanpath Prediction [link]Paper   doi   link   bibtex   4 downloads  
Problems with Saliency Maps. Boccignone, G.; Cuculo, V.; and D'Amelio, A. In Ricci, E.; Bulò, S. R.; Snoek, C.; Lanz, O.; Messelodi, S.; and Sebe, N., editor(s), Image Analysis and Processing - ICIAP 2019 - 20th International Conference, Trento, Italy, September 9-13, 2019, Proceedings, Part II, volume 11752, of Lecture Notes in Computer Science, pages 35–46, 2019. Springer
Problems with Saliency Maps [link]Paper   doi   link   bibtex   4 downloads  
Social traits from stochastic paths in the core affect space. Boccignone, G.; Cuculo, V.; D'Amelio, A.; and Lanzarotti, R. In Mayora, O.; Forti, S.; Meyer, J.; and Mamykina, L., editor(s), Proceedings of the 13th EAI International Conference on Pervasive Computing Technologies for Healthcare, PervasiveHealth 2019, Trento, Italy, 20-23 May 2019, pages 314–319, 2019. ACM
Social traits from stochastic paths in the core affect space [link]Paper   doi   link   bibtex   4 downloads  
  2018 (4)
Deep Construction of an Affective Latent Space via Multimodal Enactment. Boccignone, G.; Conte, D.; Cuculo, V.; D'Amelio, A.; Grossi, G.; and Lanzarotti, R. IEEE Trans. Cogn. Dev. Syst., 10(4): 865–880. 2018.
Deep Construction of an Affective Latent Space via Multimodal Enactment [link]Paper   doi   link   bibtex   4 downloads  
Give Ear to My Face: Modelling Multimodal Attention to Social Interactions. Boccignone, G.; Cuculo, V.; D'Amelio, A.; Grossi, G.; and Lanzarotti, R. In Leal-Taix'e, L.; and Roth, S., editor(s), Computer Vision - ECCV 2018 Workshops - Munich, Germany, September 8-14, 2018, Proceedings, Part II, volume 11130, of Lecture Notes in Computer Science, pages 331–345, 2018. Springer
Give Ear to My Face: Modelling Multimodal Attention to Social Interactions [link]Paper   doi   link   bibtex   4 downloads  
Predictive Sampling of Facial Expression Dynamics Driven by a Latent Action Space. Boccignone, G.; Bodini, M.; Cuculo, V.; and Grossi, G. In di Baja, G. S.; Gallo, L.; Y'etongnon, K.; Dipanda, A.; Santana, M. C.; and Chbeir, R., editor(s), 14th International Conference on Signal-Image Technology & Internet-Based Systems, SITIS 2018, Las Palmas de Gran Canaria, Spain, November 26-29, 2018, pages 143–150, 2018. IEEE
Predictive Sampling of Facial Expression Dynamics Driven by a Latent Action Space [link]Paper   doi   link   bibtex   5 downloads  
Personality Gaze Patterns Unveiled via Automatic Relevance Determination. Cuculo, V.; D'Amelio, A.; Lanzarotti, R.; and Boccignone, G. In Mazzara, M.; Ober, I.; and Sala"un, G., editor(s), Software Technologies: Applications and Foundations - STAF 2018 Collocated Workshops, Toulouse, France, June 25-29, 2018, Revised Selected Papers, volume 11176, of Lecture Notes in Computer Science, pages 171–184, 2018. Springer
Personality Gaze Patterns Unveiled via Automatic Relevance Determination [link]Paper   doi   link   bibtex   4 downloads  
  2017 (2)
Virtual EMG via Facial Video Analysis. Boccignone, G.; Cuculo, V.; Grossi, G.; Lanzarotti, R.; and Migliaccio, R. In Battiato, S.; Gallo, G.; Schettini, R.; and Stanco, F., editor(s), Image Analysis and Processing - ICIAP 2017 - 19th International Conference, Catania, Italy, September 11-15, 2017, Proceedings, Part I, volume 10484, of Lecture Notes in Computer Science, pages 197–207, 2017. Springer
Virtual EMG via Facial Video Analysis [link]Paper   doi   link   bibtex   4 downloads  
AMHUSE: a multimodal dataset for HUmour SEnsing. Boccignone, G.; Conte, D.; Cuculo, V.; and Lanzarotti, R. In Lank, E.; Vinciarelli, A.; Hoggan, E. E.; Subramanian, S.; and Brewster, S. A., editor(s), Proceedings of the 19th ACM International Conference on Multimodal Interaction, ICMI 2017, Glasgow, United Kingdom, November 13 - 17, 2017, pages 438–445, 2017. ACM
AMHUSE: a multimodal dataset for HUmour SEnsing [link]Paper   doi   link   bibtex   4 downloads  
  2016 (3)
Audio Features Affected by Music Expressiveness: Experimental Setup and Preliminary Results on Tuba Players. Introini, A.; Presti, G.; and Boccignone, G. In Perego, R.; Sebastiani, F.; Aslam, J. A.; Ruthven, I.; and Zobel, J., editor(s), Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval, SIGIR 2016, Pisa, Italy, July 17-21, 2016, pages 757–760, 2016. ACM
Audio Features Affected by Music Expressiveness: Experimental Setup and Preliminary Results on Tuba Players [link]Paper   doi   link   bibtex   4 downloads  
A probabilistic tour of visual attention and gaze shift computational models. Boccignone, G. CoRR, abs/1607.01232. 2016.
A probabilistic tour of visual attention and gaze shift computational models [link]Paper   link   bibtex   2 downloads  
Audio Features Affected by Music Expressiveness. Introini, A.; Presti, G.; and Boccignone, G. CoRR, abs/1605.05369. 2016.
Audio Features Affected by Music Expressiveness [link]Paper   link   bibtex   2 downloads  
  2015 (4)
Attentive Monitoring of Multiple Video Streams Driven by a Bayesian Foraging Strategy. Napoletano, P.; Boccignone, G.; and Tisato, F. IEEE Trans. Image Process., 24(11): 3266–3281. 2015.
Attentive Monitoring of Multiple Video Streams Driven by a Bayesian Foraging Strategy [link]Paper   doi   link   bibtex   4 downloads  
The Color of Smiling: Computational Synaesthesia of Facial Expressions. Cuculo, V.; Lanzarotti, R.; and Boccignone, G. In Murino, V.; and Puppo, E., editor(s), Image Analysis and Processing - ICIAP 2015 - 18th International Conference, Genoa, Italy, September 7-11, 2015, Proceedings, Part I, volume 9279, of Lecture Notes in Computer Science, pages 203–214, 2015. Springer
The Color of Smiling: Computational Synaesthesia of Facial Expressions [link]Paper   doi   link   bibtex   4 downloads  
Advanced statistical methods for eye movement analysis and modeling: a gentle introduction. Boccignone, G. CoRR, abs/1506.07194. 2015.
Advanced statistical methods for eye movement analysis and modeling: a gentle introduction [link]Paper   link   bibtex   2 downloads  
The color of smiling: computational synaesthesia of facial expressions. Cuculo, V.; Lanzarotti, R.; and Boccignone, G. CoRR, abs/1505.04260. 2015.
The color of smiling: computational synaesthesia of facial expressions [link]Paper   link   bibtex   4 downloads  
  2014 (5)
Modelling Task-Dependent Eye Guidance to Objects in Pictures. Clavelli, A.; Karatzas, D.; Llad'os, J.; Ferraro, M.; and Boccignone, G. Cogn. Comput., 6(3): 558–584. 2014.
Modelling Task-Dependent Eye Guidance to Objects in Pictures [link]Paper   doi   link   bibtex   4 downloads  
Ecological Sampling of Gaze Shifts. Boccignone, G.; and Ferraro, M. IEEE Trans. Cybern., 44(2): 266–279. 2014.
Ecological Sampling of Gaze Shifts [link]Paper   doi   link   bibtex   4 downloads  
Using sparse coding for landmark localization in facial expressions. Cuculo, V.; Lanzarotti, R.; and Boccignone, G. In 5th European Workshop on Visual Information Processing, EUVIP 2014, Villetaneuse, Paris, France, December 10-12, 2014, pages 1–6, 2014. IEEE
Using sparse coding for landmark localization in facial expressions [link]Paper   doi   link   bibtex   4 downloads  
Attentive monitoring of multiple video streams driven by a Bayesian foraging strategy. Napoletano, P.; Boccignone, G.; and Tisato, F. CoRR, abs/1410.5605. 2014.
Attentive monitoring of multiple video streams driven by a Bayesian foraging strategy [link]Paper   link   bibtex   2 downloads  
Affective Facial Expression Processing via Simulation: A Probabilistic Model. Vitale, J.; Williams, M.; Johnston, B.; and Boccignone, G. CoRR, abs/1411.0582. 2014.
Affective Facial Expression Processing via Simulation: A Probabilistic Model [link]Paper   link   bibtex   2 downloads  
  2013 (3)
Feed and fly control of visual scanpaths for foveation image processing. Boccignone, G.; and Ferraro, M. Ann. des T'el'ecommunications, 68(3-4): 201–217. 2013.
Feed and fly control of visual scanpaths for foveation image processing [link]Paper   doi   link   bibtex   4 downloads  
Gaze shift behavior on video as composite information foraging. Boccignone, G.; and Ferraro, M. Signal Process. Image Commun., 28(8): 949–966. 2013.
Gaze shift behavior on video as composite information foraging [link]Paper   doi   link   bibtex   4 downloads  
Towards Modelling an Attention-Based Text Localization Process. Clavelli, A.; Karatzas, D.; Llad'os, J.; Ferraro, M.; and Boccignone, G. In Sanches, J. M.; Mic'o, L.; and Cardoso, J. S., editor(s), Pattern Recognition and Image Analysis - 6th Iberian Conference, IbPRIA 2013, Funchal, Madeira, Portugal, June 5-7, 2013. Proceedings, volume 7887, of Lecture Notes in Computer Science, pages 296–303, 2013. Springer
Towards Modelling an Attention-Based Text Localization Process [link]Paper   doi   link   bibtex   4 downloads  
  2011 (2)
Modelling eye-movement control via a constrained search approach. Boccignone, G.; and Ferraro, M. In European Workshop on Visual Information Processing, EUVIP 2011, Paris, France, July 4-6, 2011, pages 235–240, 2011. IEEE
Modelling eye-movement control via a constrained search approach [link]Paper   doi   link   bibtex   4 downloads  
The Active Sampling of Gaze-Shifts. Boccignone, G.; and Ferraro, M. In Maino, G.; and Foresti, G. L., editor(s), Image Analysis and Processing - ICIAP 2011 - 16th International Conference, Ravenna, Italy, September 14-16, 2011, Proceedings, Part I, volume 6978, of Lecture Notes in Computer Science, pages 187–196, 2011. Springer
The Active Sampling of Gaze-Shifts [link]Paper   doi   link   bibtex   4 downloads  
  2010 (2)
Boosted Tracking in Video. Boccignone, G.; Campadelli, P.; Ferrari, A.; and Lipori, G. IEEE Signal Process. Lett., 17(2): 129–132. 2010.
Boosted Tracking in Video [link]Paper   doi   link   bibtex   4 downloads  
Gaze shifts as dynamical random sampling. Boccignone, G.; and Ferraro, M. In 2nd European Workshop on Visual Information Processing, EUVIP 2010, Paris, France, July 5-7, 2010, pages 29–34, 2010. IEEE
Gaze shifts as dynamical random sampling [link]Paper   doi   link   bibtex   4 downloads  
  2009 (1)
Real-Time Probabilistic Tracking of Faces in Video. Boccignone, G.; Campadelli, P.; Ferrari, A.; and Lipori, G. In Foggia, P.; Sansone, C.; and Vento, M., editor(s), Image Analysis and Processing - ICIAP 2009, 15th International Conference Vietri sul Mare, Italy, September 8-11, 2009, Proceedings, volume 5716, of Lecture Notes in Computer Science, pages 672–681, 2009. Springer
Real-Time Probabilistic Tracking of Faces in Video [link]Paper   doi   link   bibtex   4 downloads  
  2008 (6)
Embedding Diffusion in Variational Bayes: a Technique for Segmenting Images. Boccignone, G.; Napoletano, P.; and Ferraro, M. Int. J. Pattern Recognit. Artif. Intell., 22(5): 811–827. 2008.
Embedding Diffusion in Variational Bayes: a Technique for Segmenting Images [link]Paper   doi   link   bibtex   4 downloads  
What the Draughtsman's Hand Tells the Draughtsman's Eye: a Sensorimotor Account of Drawing. Cagli, R. C.; Coraggio, P.; Napoletano, P.; and Boccignone, G. Int. J. Pattern Recognit. Artif. Intell., 22(5): 1015–1029. 2008.
What the Draughtsman's Hand Tells the Draughtsman's Eye: a Sensorimotor Account of Drawing [link]Paper   doi   link   bibtex   4 downloads  
Context-sensitive queries for image retrieval in digital libraries. Boccignone, G.; Chianese, A.; Moscato, V.; and Picariello, A. J. Intell. Inf. Syst., 31(1): 53–84. 2008.
Context-sensitive queries for image retrieval in digital libraries [link]Paper   doi   link   bibtex   4 downloads  
Bayesian Integration of Face and Low-Level Cues for Foveated Video Coding. Boccignone, G.; Marcelli, A.; Napoletano, P.; Fiore, G. D.; Iacovoni, G.; and Morsa, S. IEEE Trans. Circuits Syst. Video Technol., 18(12): 1727–1740. 2008.
Bayesian Integration of Face and Low-Level Cues for Foveated Video Coding [link]Paper   doi   link   bibtex   4 downloads  
Nonparametric Bayesian attentive video analysis. Boccignone, G. In 19th International Conference on Pattern Recognition (ICPR 2008), December 8-11, 2008, Tampa, Florida, USA, pages 1–4, 2008. IEEE Computer Society
Nonparametric Bayesian attentive video analysis [link]Paper   doi   link   bibtex   4 downloads  
Sensorimotor coupling via dynamic bayesian networks. Cagli, R. C.; Napoletano, P.; Coraggio, P.; Boccignone, G.; and Santis, A. D. In 2008 IEEE International Conference on Robotics and Automation, ICRA 2008, May 19-23, 2008, Pasadena, California, USA, pages 1582–1587, 2008. IEEE
Sensorimotor coupling via dynamic bayesian networks [link]Paper   doi   link   bibtex   4 downloads  
  2007 (4)
A multiresolution diffused expectation-maximization algorithm for medical image segmentation. Boccignone, G.; Napoletano, P.; Caggiano, V.; and Ferraro, M. Comput. Biol. Medicine, 37(1): 83–96. 2007.
A multiresolution diffused expectation-maximization algorithm for medical image segmentation [link]Paper   doi   link   bibtex   4 downloads  
A Variational Bayes Approach to Image Segmentation. Boccignone, G.; Ferraro, M.; and Napoletano, P. In Mele, F.; Ramella, G.; Santillo, S.; and Ventriglia, F., editor(s), Advances in Brain, Vision, and Artificial Intelligence, Second International Symposium, BVAI 2007, Naples, Italy, October 10-12, 2007, Proceedings, volume 4729, of Lecture Notes in Computer Science, pages 234–243, 2007. Springer
A Variational Bayes Approach to Image Segmentation [link]Paper   doi   link   bibtex   4 downloads  
The Bayesian Draughtsman: A Model for Visuomotor Coordination in Drawing. Cagli, R. C.; Coraggio, P.; Napoletano, P.; and Boccignone, G. In Mele, F.; Ramella, G.; Santillo, S.; and Ventriglia, F., editor(s), Advances in Brain, Vision, and Artificial Intelligence, Second International Symposium, BVAI 2007, Naples, Italy, October 10-12, 2007, Proceedings, volume 4729, of Lecture Notes in Computer Science, pages 161–170, 2007. Springer
The Bayesian Draughtsman: A Model for Visuomotor Coordination in Drawing [link]Paper   doi   link   bibtex   4 downloads  
Motion Estimation via Belief Propagation. Boccignone, G.; Marcelli, A.; Napoletano, P.; and Ferraro, M. In Cucchiara, R., editor(s), 14th International Conference on Image Analysis and Processing (ICIAP 2007), 10-14 September 2007, Modena, Italy, pages 55–60, 2007. IEEE Computer Society
Motion Estimation via Belief Propagation [link]Paper   doi   link   bibtex   4 downloads  
  2006 (2)
Bayesian Propagation for Perceiving Moving Objects. Boccignone, G.; Marcelli, A.; Napoletano, P.; Caggiano, V.; and Fiore, G. D. Int. J. Pattern Recognit. Artif. Intell., 20(6): 835–848. 2006.
Bayesian Propagation for Perceiving Moving Objects [link]Paper   doi   link   bibtex   4 downloads  
Inference of moving forms via Belief Propagation. Boccignone, G.; Marcelli, A.; and Napoletano, P. In 18th International Conference on Pattern Recognition (ICPR 2006), 20-24 August 2006, Hong Kong, China, pages 191–194, 2006. IEEE Computer Society
Inference of moving forms via Belief Propagation [link]Paper   doi   link   bibtex   4 downloads  
  2005 (8)
Foveated shot detection for video segmentation. Boccignone, G.; Chianese, A.; Moscato, V.; and Picariello, A. IEEE Trans. Circuits Syst. Video Technol., 15(3): 365–377. 2005.
Foveated shot detection for video segmentation [link]Paper   doi   link   bibtex   4 downloads  
A Bayesian Approach to Situated Vision. Boccignone, G.; Caggiano, V.; Fiore, G. D.; Marcelli, A.; and Napoletano, P. In Gregorio, M. D.; Maio, V. D.; Frucci, M.; and Musio, C., editor(s), Brain, Vision, and Artificial Intelligence, First International Symposium, BVAI 2005, Naples, Italy, October 19-21, 2005, Proceedings, volume 3704, of Lecture Notes in Computer Science, pages 367–376, 2005. Springer
A Bayesian Approach to Situated Vision [link]Paper   doi   link   bibtex   4 downloads  
An Architectural Model for Combining Spatial-Based and Object-Based Information for Attentive Video Analysis. Boccignone, G.; Caggiano, V.; Marcelli, A.; Napoletano, P.; and Fiore, G. D. In Seventh International Workshop on Computer Architectures for Machine Perception (CAMP 2005), 4-6 July 2005, Palermo, Italy, pages 116–121, 2005. IEEE Computer Society
An Architectural Model for Combining Spatial-Based and Object-Based Information for Attentive Video Analysis [link]Paper   doi   link   bibtex   4 downloads  
Animate System for Query by Example in Image Databases. Boccignone, G.; Chianese, A.; Moscato, V.; and Picariello, A. In Hamza, M. H., editor(s), Internet and Multimedia Systems and Applications, EuroIMSA 2005, Grindelwald, Switzerland, February 21-23, 2005, pages 451–456, 2005. IASTED/ACTA Press
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Probabilistic Detection and Tracking of Faces in Video. Boccignone, G.; Caggiano, V.; Fiore, G. D.; and Marcelli, A. In Roli, F.; and Vitulano, S., editor(s), Image Analysis and Processing - ICIAP 2005, 13th International Conference, Cagliari, Italy, September 6-8, 2005, Proceedings, volume 3617, of Lecture Notes in Computer Science, pages 687–694, 2005. Springer
Probabilistic Detection and Tracking of Faces in Video [link]Paper   doi   link   bibtex   4 downloads  
Interleaved detection and tracking of faces in video. Boccignone, G.; Caggiano, V.; Marcelli, A.; and Fiore, G. D. In Proceedings of the 2005 International Conference on Image Processing, ICIP 2005, Genoa, Italy, September 11-14, 2005, pages 398–401, 2005. IEEE
Interleaved detection and tracking of faces in video [link]Paper   doi   link   bibtex   4 downloads  
Image segmentation via multiresolution diffused expectation-maximisation. Boccignone, G.; Caggiano, V.; Napoletano, P.; and Ferraro, M. In Proceedings of the 2005 International Conference on Image Processing, ICIP 2005, Genoa, Italy, September 11-14, 2005, pages 289–292, 2005. IEEE
Image segmentation via multiresolution diffused expectation-maximisation [link]Paper   doi   link   bibtex   4 downloads  
An Indexing Approach for Representing Multimedia Objects in High-Dimensional Spaces Based on Expectation Maximization Algorithm. Boccignone, G.; Caggiano, V.; Cesarano, C.; Moscato, V.; and Sansone, L. In Candan, K. S.; and Celentano, A., editor(s), Advances in Multimedia Information Systems, 11th International Workshop, MIS 2005, Sorrento, Italy, September 19-21, 2005, Proceedings, volume 3665, of Lecture Notes in Computer Science, pages 63–77, 2005. Springer
An Indexing Approach for Representing Multimedia Objects in High-Dimensional Spaces Based on Expectation Maximization Algorithm [link]Paper   doi   link   bibtex   4 downloads  
  2004 (2)
Image contrast enhancement via entropy production. Ferraro, M.; and Boccignone, G. Real Time Imaging, 10(4): 229–238. 2004.
Image contrast enhancement via entropy production [link]Paper   doi   link   bibtex   4 downloads  
Using Attention for Video Segmentation. Boccignone, G.; Chianese, A.; Moscato, V.; and Picariello, A. In 17th International Conference on Pattern Recognition, ICPR 2004, Cambridge, UK, August 23-26, 2004, pages 838–841, 2004. IEEE Computer Society
Using Attention for Video Segmentation [link]Paper   doi   link   bibtex   4 downloads  
  2003 (2)
Foveated analysis of video. Boccignone, G.; Marcelli, A.; and Somma, G. In 12th International Conference on Image Analysis and Processing (ICIAP 2003), 17-19 September 2003, Mantova, Italy, pages 638–643, 2003. IEEE Computer Society
Foveated analysis of video [link]Paper   doi   link   bibtex   4 downloads  
Using motion for foveated analysis of video. Boccignone, G.; Marcelli, A.; and Somma, G. In Seventh International Symposium on Signal Processing and Its Applications, ISSPA 2003, July 1-4, 2003, Paris, France, Proceedings, Volume 1, pages 233–236, 2003. IEEE
Using motion for foveated analysis of video [link]Paper   doi   link   bibtex   4 downloads  
  2002 (3)
Generalized Spatio-Chromatic Diffusion. Boccignone, G.; Ferraro, M.; and Caelli, T. IEEE Trans. Pattern Anal. Mach. Intell., 24(10): 1298–1309. 2002.
Generalized Spatio-Chromatic Diffusion [link]Paper   doi   link   bibtex   4 downloads  
Entropy-based representation of image information. Ferraro, M.; Boccignone, G.; and Caelli, T. Pattern Recognit. Lett., 23(12): 1391–1398. 2002.
Entropy-based representation of image information [link]Paper   doi   link   bibtex   4 downloads  
Image Similarity Based on Animate Vision: Information Path Matching. Boccignone, G.; Picariello, A.; Moscato, V.; and Albanese, M. In MIS 2002, International Workshop on Multimedia Information Systems, October 10 - November 1, 2002, Tempe, Arizona, USA, Proceedings, pages 66–75, 2002. Arizona State University
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  2001 (3)
Encoding Visual Information Using Anisotropic Transformations. Boccignone, G.; Ferraro, M.; and Caelli, T. IEEE Trans. Pattern Anal. Mach. Intell., 23(2): 207–211. 2001.
Encoding Visual Information Using Anisotropic Transformations [link]Paper   doi   link   bibtex   4 downloads  
An Information-Theoretic Approach to Active Vision. Boccignone, G.; Ferraro, M.; and Caelli, T. In 11th International Conference on Image Analysis and Processing (ICIAP 2001), 26-28 September 2001, Palermo, Italy, pages 340–345, 2001. IEEE Computer Society
An Information-Theoretic Approach to Active Vision [link]Paper   doi   link   bibtex   4 downloads  
On the Representation of Visual Information. Ferraro, M.; Boccignone, G.; and Caelli, T. In Arcelli, C.; Cordella, L. P.; and di Baja, G. S., editor(s), Visual Form 2001, 4th International Workshop on Visual Form, IWVF-4, Capri, Italy, May 28-30, 2001, Proceedings, volume 2059, of Lecture Notes in Computer Science, pages 176–185, 2001. Springer
On the Representation of Visual Information [link]Paper   doi   link   bibtex   4 downloads  
  2000 (6)
Computer aided detection of microcalcifications in digital mammograms. Boccignone, G.; Chianese, A.; and Picariello, A. Comput. Biol. Medicine, 30(5): 267–286. 2000.
Computer aided detection of microcalcifications in digital mammograms [link]Paper   doi   link   bibtex   4 downloads  
Using Renyi's Information and Wavelets for Target Detection: An Application to Mammograms. Boccignone, G.; Chianese, A.; and Picariello, A. Pattern Anal. Appl., 3(4): 303–313. 2000.
Using Renyi's Information and Wavelets for Target Detection: An Application to Mammograms [link]Paper   doi   link   bibtex   4 downloads  
Isotropic versus Anisotropic Encoding of Visual Information. Ferraro, M.; Boccignone, G.; and Caelli, T. In Proceedings of the 2000 International Conference on Image Processing, ICIP 2000, Vancouver, BC, Canada, September 10-13, 2000, pages 905–908, 2000. IEEE
Isotropic versus Anisotropic Encoding of Visual Information [link]Paper   doi   link   bibtex   4 downloads  
Automated Threshold Selection for the Detection of Dissolves in MPEG Videos. Boccignone, G.; Santo, M. D.; and Percannella, G. In 2000 IEEE International Conference on Multimedia and Expo, ICME 2000, New York, NY, USA, July 30 - August 2, 2000, pages 1535–1538, 2000. IEEE Computer Society
Automated Threshold Selection for the Detection of Dissolves in MPEG Videos [link]Paper   doi   link   bibtex   4 downloads  
Entropy Production in Color Images. Boccignone, G.; Ferraro, M.; and Caelli, T. In 15th International Conference on Pattern Recognition, ICPR'00, Barcelona, Spain, September 3-8, 2000, pages 1202–1205, 2000. IEEE Computer Society
Entropy Production in Color Images [link]Paper   doi   link   bibtex   4 downloads  
Algorithm for video cut detection in MPEG sequences. Boccignone, G.; Santo, M. D.; and Percannella, G. In Yeung, M. M.; Yeo, B.; and Bouman, C. A., editor(s), Storage and Retrieval for Media Databases 2000, San Jose, CA, USA, January 26, 2000, volume 3972, of SPIE Proceedings, pages 523–530, 2000. SPIE
Algorithm for video cut detection in MPEG sequences [link]Paper   doi   link   bibtex   4 downloads  
  1999 (4)
On the Representation of Image Structures via Scale Space Entropy Conditions. Ferraro, M.; Boccignone, G.; and Caelli, T. IEEE Trans. Pattern Anal. Mach. Intell., 21(11): 1199–1203. 1999.
On the Representation of Image Structures via Scale Space Entropy Conditions [link]Paper   doi   link   bibtex   4 downloads  
Visual Information from Anisotropic Transformations. Boccignone, G.; Ferraro, M.; and Caelli, T. In 1oth International Conference on Image Analysis and Processing (ICIAP 1999), 27-29 September 1999, Venice, Italy, pages 334–339, 1999. IEEE Computer Society
Visual Information from Anisotropic Transformations [link]Paper   doi   link   bibtex   4 downloads  
Local Structure in Images from Entropy Production. Boccignone, G.; Ferraro, M.; and Caelli, T. In Proceedings of the 1999 International Conference on Image Processing, ICIP '99, Kobe, Japan, October 24-28, 1999, pages 343–347, 1999. IEEE
Local Structure in Images from Entropy Production [link]Paper   doi   link   bibtex   4 downloads  
Joint Audio-Video Processing of MPEG Encoded Sequences. Boccignone, G.; Santo, M. D.; and Percannella, G. In IEEE International Conference on Multimedia Computing and Systems, ICMCS 1999, Florence, Italy, June 7-11, 1999. Volume II, pages 225–229, 1999. IEEE Computer Society
Joint Audio-Video Processing of MPEG Encoded Sequences [link]Paper   doi   link   bibtex   4 downloads  
  1998 (3)
Entropy-based detection of microcalcifications in wavelet space. Boccignone, G.; Chianese, A.; and Picariello, A. In Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98, Seattle, Washington, USA, May 12-15, 1998, pages 2713–2716, 1998. IEEE
Entropy-based detection of microcalcifications in wavelet space [link]Paper   doi   link   bibtex   4 downloads  
Information Properties in Fine-to-Coarse Image Transformations. Ferraro, M.; and Boccignone, G. In Proceedings of the 1998 IEEE International Conference on Image Processing, ICIP-98, Chicago, Illinois, USA, October 4-7, 1998, pages 757–761, 1998. IEEE Computer Society
Information Properties in Fine-to-Coarse Image Transformations [link]Paper   doi   link   bibtex   4 downloads  
Small target detection using wavelets. Boccignone, G.; Chianese, A.; and Picariello, A. In Jain, A. K.; Venkatesh, S.; and Lovell, B. C., editor(s), Fourteenth International Conference on Pattern Recognition, ICPR 1998, Brisbane, Australia, 16-20 August, 1998, pages 1776–1778, 1998. IEEE Computer Society
Small target detection using wavelets [link]Paper   doi   link   bibtex   4 downloads  
  1997 (2)
Multiscale contrast enhancement of medical images. Boccignone, G.; and Picariello, A. In 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '97, Munich, Germany, April 21-24, 1997, pages 2789–2792, 1997. IEEE Computer Society
Multiscale contrast enhancement of medical images [link]Paper   doi   link   bibtex   4 downloads  
A Multiscale Contrast Enhancement Method. Boccignone, G. In Proceedings 1997 International Conference on Image Processing, ICIP '97, Santa Barbara, California, USA, October 26-29, 1997, pages 306–309, 1997. IEEE Computer Society
A Multiscale Contrast Enhancement Method [link]Paper   doi   link   bibtex   4 downloads  
  1996 (3)
A Processing Model for Two-Dimensional Images Based on the Object-Oriented Paradigm. Boccignone, G.; Santo, M. D.; Chianese, A.; and Picariello, A. Theory Pract. Object Syst., 2(4): 227–246. 1996.
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Enhancement of mammograms: experimental results. Boccignone, G.; and Picariello, A. In Proceedings 1996 International Conference on Image Processing, Lausanne, Switzerland, September 16-19, 1996, pages 347–350, 1996. IEEE Computer Society
Enhancement of mammograms: experimental results [link]Paper   doi   link   bibtex   4 downloads  
Anisotropic enhancement of mammographic images. Boccignone, G.; and Picariello, A. In 13th International Conference on Pattern Recognition, ICPR 1996, Vienna, Austria, 25-19 August, 1996, pages 408–412, 1996. IEEE Computer Society
Anisotropic enhancement of mammographic images [link]Paper   doi   link   bibtex   4 downloads  
  1995 (1)
Improving the Use of Contours for Off-line Cursive Script Segmentation. Boccignone, G.; Santo, M. D.; Chianese, A.; and Picariello, A. In Braccini, C.; Floriani, L. D.; and Vernazza, G., editor(s), Image Analysis and Processing, 8th International Conference, ICIAP '95, San Remo, Italy, September 13-15, 1995, Proceedings, volume 974, of Lecture Notes in Computer Science, pages 545–550, 1995. Springer
Improving the Use of Contours for Off-line Cursive Script Segmentation [link]Paper   doi   link   bibtex   4 downloads  
  1994 (2)
A Software Architecture for Medical Image Processing Stations. Boccignone, G.; Chianese, A.; Santo, M. D.; and Picariello, A. In Proceedings 1994 International Conference on Image Processing, Austin, Texas, USA, November 13-16, 1994, pages 801–805, 1994. IEEE Computer Society
A Software Architecture for Medical Image Processing Stations [link]Paper   doi   link   bibtex   4 downloads  
Object-Oriented Representation of Shape Information. Boccignone, G.; Chianese, A.; Santo, M. D.; and Picariello, A. In Bertino, E.; and Urban, S. D., editor(s), Object-Oriented Methodologies and Systems, International Symposium ISOOMS '94, Palermo, Italy, September 21-22, 1994, Proceedings, volume 858, of Lecture Notes in Computer Science, pages 266–277, 1994. Springer
Object-Oriented Representation of Shape Information [link]Paper   doi   link   bibtex   4 downloads  
  1993 (3)
Recovering dynamic information from static handwriting. Boccignone, G.; Chianese, A.; Cordella, L. P.; and Marcelli, A. Pattern Recognit., 26(3): 409–418. 1993.
Recovering dynamic information from static handwriting [link]Paper   doi   link   bibtex   4 downloads  
An Experimental Vision Tool for Real Time Quality Control. Boccignone, G.; Esposito, L.; and Marcelli, A. In Chetverikov, D.; and Kropatsch, W. G., editor(s), Computer Analysis of Images and Patterns, 5th International Conference, CAIP'93, Budapest, Hungary, September 13-15, 1993, Proceedings, volume 719, of Lecture Notes in Computer Science, pages 706–710, 1993. Springer
An Experimental Vision Tool for Real Time Quality Control [link]Paper   doi   link   bibtex   4 downloads  
Building an object-oriented environment for document processing. Boccignone, G.; Chianese, A.; Santo, M. D.; and Picariello, A. In 2nd International Conference Document Analysis and Recognition, ICDAR '93, October 20-22, 1993, Tsukuba City, Japan, pages 436–439, 1993. IEEE Computer Society
Building an object-oriented environment for document processing [link]Paper   doi   link   bibtex   4 downloads  
  1989 (1)
Investigation on a structural solution of merged characters segmentation in OCR. Boccignone, G.; Marcelli, A.; and Steensma, J. In Cantoni, V.; Creutzburg, R.; Levialdi, S.; and Wolf, G., editor(s), Recent Issues in Pattern Analysis and Recognition, volume 399, of Lecture Notes in Computer Science, pages 303–315, 1989. Springer
Investigation on a structural solution of merged characters segmentation in OCR [link]Paper   doi   link   bibtex   4 downloads