Moacir Antonelli Ponti
Faculty
Data Science Expert at Mercado Livre, and part-time Associate Professor level 3 of Computer Science at the Institute of Mathematics and Computer Sciences, University of São Paulo (ICMC / USP). Was academic visitor at the Centre for Vision, Speech and Signal Processing (CVSSP), University of Surrey in 2016-2017. Received the Google Latin America Research Award in 2017-2018. Co-autor of the book Machine Learning (2018, Springer). Received his doctorate (2008) and master's (2004) degrees at the Universidade Federal de São Carlos. His research interests are Digital Signal Image and Video Processing and Machine Learning. He is currently developing research projects on deep learning, representations learning with applications in signal, image and video, as well as data quality for machine learning.
Lattes: http://lattes.cnpq.br/5041497500746910
E-mail: moacir@icmc.usp.br
Homepage: http://www.icmc.usp.br/~moacir
Education
Publications
CASANOVA, EDRESSON; JUNIOR, ARNALDO CANDIDO; SHULBY, CHRISTOPHER; OLIVEIRA, FREDERICO SANTOS DE; TEIXEIRA, JOÃO PAULO; PONTI, MOACIR ANTONELLI; ALUÍSIO, SANDRA. TTS-Portuguese Corpus: a corpus for speech synthesis in Brazilian Portuguese. Language Resources and Evaluation (2022). ISSN: 1574020X. DOI: 10.1007/s10579-021-09570-4
DE RESENDE, DAMARES CRYSTINA OLIVEIRA; PONTI, MOACIR ANTONELLI. Robust image features for classification and zero-shot tasks by merging visual and semantic attributes. NEURAL COMPUTING & APPLICATIONS (2022). ISSN: 09410643. DOI: 10.1007/s00521-021-06601-7
CHIUDO, MARCELA MARTINS; BET, PATRICIA; COSTA, GIOVANA FONDATO; SIMÕES, MARIA DO SOCORRO MORAIS PEREIRA; PONTI, MOACIR ANTONELLI; DOURADO, VICTOR ZUNIGA; CASTRO, PAULA COSTA. Mapping features and patterns of accelerometry data on human movement in different age groups and associated health problems: A cross-sectional study. EXPERIMENTAL GERONTOLOGY (2022). ISSN: 05315565. DOI: 10.1016/j.exger.2022.111949
SAMPAIO FERRAZ RIBEIRO, LEO; BUI, TU; COLLOMOSSE, JOHN; PONTI, MOACIR. Scene designer: compositional sketch-based image retrieval with contrastive learning and an auxiliary synthesis task. MULTIMEDIA TOOLS AND APPLICATIONS (2022). ISSN: 13807501. DOI: 10.1007/s11042-022-14282-0
CASTRO, AUGUSTO; GRASSI JR., VALDIR; PONTI, MOACIR. Deep Depth Completion of Low-cost Sensor Indoor RGB-D using Euclidean Distance-based Weighted Loss and Edge-aware Refinement. Proceedings of the 17th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (2022). ISSN: . DOI: 10.5220/0010915300003124
BET, PATRICIA; CASTRO, PAULA C.; PONTI, MOACIR A.. Foreseeing future falls with accelerometer features in active community-dwelling older persons with no recent history of falls. EXPERIMENTAL GERONTOLOGY (2021). ISSN: 05315565. DOI: 10.1016/j.exger.2020.111139
SOARES, V.H.A.; PONTI, M.A.; GONÇALVES, R.A.; CAMPELLO, R.J.G.B.. Cattle counting in the wild with geolocated aerial images in large pasture areas. COMPUTERS AND ELECTRONICS IN AGRICULTURE (2021). ISSN: 01681699. DOI: 10.1016/j.compag.2021.106354
CASTELO, SONIA; PONTI, MOACIR; MINGHIM, ROSANE. A Visual Mining Approach to Improved Multiple- Instance Learning. Algorithms (2021). ISSN: 19994893. DOI: 10.3390/a14120344
DIAS, F. F.; PONTI, M. A.; MINGHIM, R.. A classification and quantification approach to generate features in soundscape ecology using neural networks. Neural Computing and Applications (2021). ISSN: 1433-3058. DOI: 10.1007/s00521-021-06501-w
NAZARE, TIAGO; F. DE MELLO, RODRIGO; PONTI, MOACIR. Investigating 3D Convolutional Layers as Feature Extractors for Anomaly Detection Systems Applied to Surveillance Videos. Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (2021). ISSN: . DOI: 10.5220/0010347907530762
CASANOVA, EDRESSON; SHULBY, CHRISTOPHER; GÖLGE, EREN; MÜLLER, NICOLAS MICHAEL; OLIVEIRA, FREDERICO SANTOS DE; CANDIDO JR., ARNALDO; SOARES, ANDERSON DA SILVA; ALUISIO, SANDRA MARIA; PONTI, MOACIR ANTONELLI. SC-GlowTTS: An Efficient Zero-Shot Multi-Speaker Text-To-Speech Model. Interspeech 2021 (2021). ISSN: . DOI: 10.21437/interspeech.2021-1774
VOGADO, LUIS; VERAS, RODRIGO; AIRES, KELSON; ARAÚJO, FLÁVIO; SILVA, ROMUERE; PONTI, MOACIR; TAVARES, JOÃO MANUEL R. S.. Diagnosis of Leukaemia in Blood Slides Based on a Fine-Tuned and Highly Generalisable Deep Learning Model. SENSORS (2021). ISSN: 14248220. DOI: 10.3390/s21092989
CASANOVA, EDRESSON; CANDIDO JR., ARNALDO; FERNANDES JR., RICARDO CORSO; FINGER, MARCELO; GRIS, LUCAS RAFAEL STEFANEL; PONTI, MOACIR ANTONELLI; PINTO DA SILVA, DANIEL PEIXOTO. Transfer Learning and Data Augmentation Techniques to the COVID-19 Identification Tasks in ComParE 2021. Interspeech 2021 (2021). ISSN: . DOI: 10.21437/interspeech.2021-1798
ALVES, TATIANE VIEIRA; DA HORA RODRIGUES, KAMILA RIOS; PONTI, MOACIR ANTONELLI. Interactive protocol for acquisition of migraine diaries with a mobile app and machine learning data analysis. Proceedings of the XX Brazilian Symposium on Human Factors in Computing Systems (2021). ISSN: . DOI: 10.1145/3472301.3484322
FERRAZ RIBEIRO, LEO SAMPAIO; BUI, TU; COLLOMOSSE, JOHN; PONTI, MOACIR. Scene Designer: a Unified Model for Scene Search and Synthesis from Sketch. 2021 IEEE/CVF International Conference on Computer Vision Workshops (ICCVW) (2021). ISSN: . DOI: 10.1109/ICCVW54120.2021.00275
CAVALLARI, GABRIEL B.; PONTI, MOACIR A.. Semi-supervised siamese network using self-supervision under scarce annotation improves class separability and robustness to attack. 2021 34th SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2021). ISSN: . DOI: 10.1109/SIBGRAPI54419.2021.00038
DOS SANTOS, FERNANDO PEREIRA; THUME, GABRIELA SALVADOR; PONTI, MOACIR ANTONELLI. Data Augmentation Guidelines for Cross-Dataset Transfer Learning and Pseudo Labeling. 2021 34th SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2021). ISSN: . DOI: 10.1109/sibgrapi54419.2021.00036
PONTI, MOACIR A.; DOS SANTOS, FERNANDO P.; RIBEIRO, LEO S. F.; CAVALLARI, GABRIEL B.. Training Deep Networks from Zero to Hero: avoiding pitfalls and going beyond. 2021 34th SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2021). ISSN: . DOI: 10.1109/sibgrapi54419.2021.00011
SAMPAIO FERRAZ RIBEIRO, LEO; BUI, TU; COLLOMOSSE, JOHN; PONTI, MOACIR. Sketchformer: Transformer-Based Representation for Sketched Structure. 2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) (2020). ISSN: . DOI: 10.1109/CVPR42600.2020.01416
DE FARIA, STEPHANIE MARTINS; DE MORAIS FABRÍCIO, DAIENE; TUMAS, VITOR; CASTRO, PAULA COSTA; PONTI, MOACIR ANTONELLI; HALLAK, JAIME EC; ZUARDI, ANTONIO W; CRIPPA, JOSÉ ALEXANDRE S; CHAGAS, MARCOS HORTES NISIHARA. Effects of acute cannabidiol administration on anxiety and tremors induced by a Simulated Public Speaking Test in patients with Parkinson?s disease. JOURNAL OF PSYCHOPHARMACOLOGY (2020). ISSN: 02698811. DOI: 10.1177/0269881119895536
SANTOS, F. P.; ZOR, C.; KITTLER, J.; PONTI, MOACIR A.. Learning image features with fewer labels using a semi-supervised deep convolutional network. NEURAL NETWORKS (2020). ISSN: 08936080. DOI: 10.1016/j.neunet.2020.08.016
PEREIRA DOS SANTOS, FERNANDO; ANTONELLI PONTI, MOACIR. Alignment of Local and Global Features from Multiple Layers of Convolutional Neural Network for Image Classification. 2019 32nd SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2019). ISSN: . DOI: 10.1109/SIBGRAPI.2019.00040
DOS SANTOS, FERNANDO P.; RIBEIRO, LEONARDO S.F.; PONTI, MOACIR A.. Generalization of feature embeddings transferred from different video anomaly detection domains. JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION (2019). ISSN: 10473203. DOI: 10.1016/j.jvcir.2019.02.035
PONTI, MOACIR A.; PARANHOS DA COSTA, GABRIEL B.; SANTOS, FERNANDO P.; SILVEIRA, KAUE U.. Supervised and unsupervised relevance sampling in handcrafted and deep learning features obtained from image collections. APPLIED SOFT COMPUTING (2019). ISSN: 15684946. DOI: 10.1016/j.asoc.2019.04.013
COLETTA, LUIZ F.S.; PONTI, MOACIR; HRUSCHKA, EDUARDO R.; ACHARYA, AYAN; GHOSH, JOYDEEP. Combining Clustering and Active Learning for the Detection and Learning of New Image Classes. NEUROCOMPUTING (2019). ISSN: 09252312. DOI: 10.1016/j.neucom.2019.04.070
BET, PATRÍCIA; CASTRO, PAULA; CHAGAS, MARCOS HORTES N; PONTI, MOACIR ANTONELLI. Accelerometry data analysis for identification of fallers using the six-minute walk test. BIOMEDICAL PHYSICS & ENGINEERING EXPRESS (2019). ISSN: 20571976. DOI: 10.1088/2057-1976/ab43d4
BET, PATRICIA; CASTRO, PAULA C.; PONTI, MOACIR A.. Fall detection and fall risk assessment in older person using wearable sensors: a systematic review. INTERNATIONAL JOURNAL OF MEDICAL INFORMATICS (2019). ISSN: 13865056. DOI: 10.1016/j.ijmedinf.2019.08.006
PEREIRA DOS SANTOS, FERNANDO; ANTONELLI PONTI, MOACIR. Robust Feature Spaces from Pre-Trained Deep Network Layers for Skin Lesion Classification. 2018 31st SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2018). ISSN: . DOI: 10.1109/SIBGRAPI.2018.00031
CAVALLARI, GABRIEL; RIBEIRO, LEONARDO; PONTI, MOACIR. Unsupervised Representation Learning Using Convolutional and Stacked Auto-Encoders: A Domain and Cross-Domain Feature Space Analysis. 2018 31st SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2018). ISSN: . DOI: 10.1109/SIBGRAPI.2018.00063
SANTANA DE NAZARE, TIAGO; DE BARROS PARANHOS DA COSTA, GABRIEL; FERNANDES DE MELLO, RODRIGO; ANTONELLI PONTI, MOACIR. Color Quantization in Transfer Learning and Noisy Scenarios: An Empirical Analysis Using Convolutional Networks. 2018 31st SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2018). ISSN: . DOI: 10.1109/SIBGRAPI.2018.00055
BUI, TU; RIBEIRO, LEONARDO; PONTI, MOACIR; COLLOMOSSE, JOHN. Sketching out the details: Sketch-based image retrieval using convolutional neural networks with multi-stage regression. COMPUTERS & GRAPHICS-UK (2018). ISSN: 00978493. DOI: 10.1016/j.cag.2017.12.006
PONTI, MOACIR ANTONELLI; RIBEIRO, LEONARDO SAMPAIO FERRAZ; NAZARE, TIAGO SANTANA; BUI, TU; COLLOMOSSE, JOHN. Everything You Wanted to Know about Deep Learning for Computer Vision but Were Afraid to Ask. 2017 30th SIBGRAPI Conference on Graphics, Patterns and Images Tutorials (SIBGRAPI-T) (2017). ISSN: . DOI: 10.1109/SIBGRAPI-T.2017.12
PONTI, MOACIR; KITTLER, JOSEF; RIVA, MATEUS; CAMPOS, TEÓFILO DE; ZOR, CEMRE. A decision cognizant Kullback-Leibler divergence. Pattern Recognition (2017). ISSN: 00313203. DOI: 10.1016/j.patcog.2016.08.018
ZAZZETTA, M. S.; NASCIMENTO, C. M. C.; COMINETTI, M. R.; GOMES, G. A. O.; ORLANDI, F. S.; GRATAO, A. C. M.; VASILCEAC, F. A.; GRAMANI-SAY, K.; PONTI, M.; CASTRO, PAULA COSTA; PAVARINI, S. C. I.. Identifying frailty levels and associated factors in a population living in the context of poverty and social vulnerability. THE JOURNAL OF FRAILTY & AGING (2017). ISSN: 22734309. DOI: 10.14283/jfa.2016.116
PONTI, M.; BET, P.; OLIVEIRA, C. L.; CASTRO, PAULA COSTA. Better than counting seconds: Identifying fallers among healthy elderly using fusion of accelerometer features and dual-task Timed Up and Go. PLoS One (2017). ISSN: 19326203. DOI: 10.1371/journal.pone.0175559
PONTI, MOACIR; RIVA, MATEUS. An incremental linear-time learning algorithm for the Optimum-Path Forest classifier. INFORMATION PROCESSING LETTERS (2017). ISSN: 00200190. DOI: 10.1016/j.ipl.2017.05.004
BUI, T.; RIBEIRO, L. S. F.; PONTI, M.; COLLOMOSSE, J.. Compact Descriptors for Sketch-based Image Retrieval using a Triplet loss Convolutional Neural Network. COMPUTER VISION AND IMAGE UNDERSTANDING (2017). ISSN: 10773142. DOI: 10.1016/j.cviu.2017.06.007
PONTI, MOACIR; NAZARE, TIAGO S.; KITTLER, JOSEF. Optical-flow features empirical mode decomposition for motion anomaly detection. 2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (2017). ISSN: . DOI: 10.1109/ICASSP.2017.7952387
M; P; 1; . Relevance Image Sampling from Collection Using Importance Selection on Randomized Optimum-Path Trees. 2017 Brazilian Conference on Intelligent Systems (BRACIS) (2017). ISSN: . DOI: 10.1109/BRACIS.2017.58
PONTI, M.; CHAVES, A.; JORGE, F. R.; COSTA, G. B. P.; COULTURATO, A.; BRANCO, K. R. J. C.. Precision Agriculture: Using Low-Cost Systems to Acquire Low-Altitude Images. IEEE Computer Graphics and Applications (2016). ISSN: 02721716. DOI: 10.1109/MCG.2016.69
PONTI, MOACIR; HELOU, ELIAS; FERREIRA, PAULO JORGE; MASCARENHAS, NELSON. Image Restoration using Gradient Iteration and Constraints for Band Extrapolation. IEEE Journal of Selected Topics in Signal Processing (2016). ISSN: 19324553. DOI: 10.1109/jstsp.2015.2493978
RIVA, M.; PONTI, M.; DE CAMPOS, T. E.. One-class to Multi-class Model Update using the Class-Incremental Optimum-Path Forest Classifier. Frontiers in Artificial Intelligence and Applications (2016). ISSN: . DOI: 10.3233/978-1-61499-672-9-216
CONTATO, WELINTON A.; NAZARE, TIAGO S.; COSTA, GABRIEL B. PARANHOS DA; PONTI, MOACIR; NETO, JOAO E. S. BATISTA. Improving Non-local Video Denoising with Local Binary Patterns and Image Quantization. 2016 29th SIBGRAPI Conference on Graphics, Patterns and Images (SIBGRAPI) (2016). ISSN: . DOI: 10.1109/SIBGRAPI.2016.041
PONTI, MOACIR; PICON, CAMILA T.. Color description of low resolution images using fast bitwise quantization and border-interior classification. 2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (2015). ISSN: . DOI: 10.1109/ICASSP.2015.7178200
BARBIERI, TAMIRES T. S.; TROJAHN, TIAGO H.; PONTI-JR, MOACIR P.; GOULARTE, RUDINEI. Shot-HR. Proceedings of the 30th Annual ACM Symposium on Applied Computing - SAC '15 (2015). ISSN: . DOI: 10.1145/2695664.2695841
PONTI, MOACIR; NAZARÉ, TIAGO S.; THUMÉ, GABRIELA S.. Image quantization as a dimensionality reduction procedure in color and texture feature extraction. NEUROCOMPUTING (2015). ISSN: 09252312. DOI: 10.1016/j.neucom.2015.04.114
M; P; 1; . Segmentation of Low-Cost Remote Sensing Images Combining Vegetation Indices and Mean Shift. IEEE Geoscience and Remote Sensing Letters (Print) (2013). ISSN: 1545598X. DOI: 10.1109/LGRS.2012.2193113
PONTI-JR, MOACIR P.; MASCARENHAS, NELSON D. A.; FERREIRA, PAULO J. S. G.; SUAZO, CLAUDIO A. T.. Three-dimensional noisy image restoration using filtered extrapolation and deconvolution. Signal, Image and Video Processing (Internet) (2013). ISSN: 18631711. DOI: 10.1007/s11760-011-0216-x
PONTI, MOACIR; ESCOBAR, LUCIANA C.. Compact color features with bitwise quantization and reduced resolution for mobile processing. 2013 IEEE Global Conference on Signal and Information Processing (2013). ISSN: . DOI: 10.1109/GlobalSIP.2013.6737000
M; P; 1; . Improving restoration of microscopy images using iterative prototypes and a sequence of support constraints. 2012 19th IEEE International Conference on Image Processing (2012). ISSN: . DOI: 10.1109/ICIP.2012.6467547
PAPA, J. P.; PAGNIN, A.; SCHELLINI, S. A.; SPADOTTO, A.; GUIDO, R. C.; PONTI-JR, M.P.; CHIAGIA, G.; FALCAO, A. X.. Feature selection through gravitational search algorithm. 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (2011). ISSN: . DOI: 10.1109/ICASSP.2011.5946916
PONTI-JR, M.P.; PAPA, J. P.. Improving accuracy and speed of Optimum-Path Forest classifier using combination of disjoint training subsets. Multiple Classifier Systems, Lecture Notes in Computer Science (2011). ISSN: . DOI: 10.1007/978-3-642-21557-5_26
PONTI-JR, M.P.; PAPA, J. P.; LEVADA, A. L. M.. A Markov Random Field Model for Combining Optimum-Path Forest Classifiers Using Decision Graphs and Game Strategy Approach. Lecture Notes in Computer Science (2011). ISSN: . DOI: 10.1007/978-3-642-25085-9_69
M; P; 1; . Combining Classifiers: from the creation of ensembles to the decision fusion. SIBGRAPI-T - Conference on Graphics, Patterns and Images (Tutorials) (2011). ISSN: . DOI: http://dx.doi.org/10.1109/SIBGRAPI-T.2011.9
M; P; 1; . Combining Classifiers: From the Creation of Ensembles to the Decision Fusion. 2011 24th SIBGRAPI Conference on Graphics, Patterns, and Images Tutorials (2011). ISSN: . DOI: 10.1109/sibgrapi-t.2011.9
M; P; 1; . Microscope Volume Segmentation Improved through Non-Linear Restoration. International Journal of Natural Computing Research (2010). ISSN: 1947928X. DOI: 10.4018/IJNCR
PONTI-JR, M.P.; MASCARENHAS, N.D.A.. Does Background Intensity Estimation Influence the Iterative Restoration of Microscope Images?. 23rd Conference on Graphics, Patterns and Images (SIBGRAPI) (2010). ISSN: . DOI: 10.1109/SIBGRAPI.2010.16
MASCARENHAS, N.D.A.; SUAZO, C. A. T.; PONTI-JR, M.P.;PONTI-JUNIOR, M.P.;PONTI, M.P.;PONTI-JR, MOACIR P.;PONTI, MOACIR P.;PONTI, M.;PONTI, MOACIR. A Restoration and Extrapolation Iterative Method for Band-limited Fluorescence Microscopy Image. IEEE Proceedings of XX Brazilian Symposium on Computer Graphics and Image Processing (2007). ISSN: . DOI: 10.1109/SIBGRAPI.2007.25
BREVE, F.A.; MASCARENHAS, N.D.A.; PONTI-JR, M.P.;PONTI-JUNIOR, M.P.;PONTI, M.P.;PONTI-JR, MOACIR P.;PONTI, MOACIR P.;PONTI, M.;PONTI, MOACIR. Multilayer Perceptron Classifier Combination for Identification of Materials on Noisy Soil Science Multispectral Images. IEEE Proceedings of XX Brazilian Symposium on Computer Graphics and Image Processing (2007). ISSN: . DOI: 10.1109/SIBGRAPI.2007.10
BREVE, F.A.; MASCARENHAS, N.D.A.; PONTI-JR, M.P.;PONTI-JUNIOR, M.P.;PONTI, M.P.;PONTI-JR, MOACIR P.;PONTI, MOACIR P.;PONTI, M.;PONTI, MOACIR. Combining Methods to Stabilize and Increase Performance of Neural Network-Based Classifiers. IEEE Proceedings of XVIII Brazilian Symposium on Computer Graphics and Image Processing (2005). ISSN: . DOI: 10.1109/SIBGRAPI.2005.19
MASCARENHAS, N.D.A.; PONTI-JR, M.P.;PONTI-JUNIOR, M.P.;PONTI, M.P.;PONTI-JR, MOACIR P.;PONTI, MOACIR P.;PONTI, M.;PONTI, MOACIR. Material Analysis on Noisy Multispectral Images using Classifier Combination. Proceedings of the 6th IEEE Southwest Symposium on Image Analysis and Interpretation (2004). ISSN: . DOI: 10.1109/IAI.2004.1300933