Eduardo Peixoto

Eduardo Peixoto is an Adjunct Professor of the Department of Electrical Engineering in the University of Brasilia.
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Eduardo Peixoto

Eduardo Peixoto received the Engineering and M.Sc. degrees from Universidade de Brasília, Brazil, in 2005 and 2008, respectively, and the Ph.D. degree from Queen Mary, University of London, in 2012, all in Electrical Engineering.

In 2005-2006 he worked at BRISA developing Java applications for Digital Television and Mobile Phones. In 2006, he joined the Digital Signal Processing Group (GPDS) to work with Distributed Video Coding and Transcoding. In 2008, he joined Queen Mary, University of London to pursue a Ph.D., where he worked with Video Coding based on Wavelet Transforms, and with different video transcoders. In 2012, he joined Universidade de Brasília, first as a Substitute Lecturer and then, in 2014, as an Adjunct Professor. Currently, he is with the Department of Electrical Engineering at the University of Brasilia (UnB), where he is a member of the Graduate Program on Electronic Systems and Automation Engineering (PGEA). He is also a member of IEEE and the IEEE Signal Processing Society.

His research interests include image and video processing and coding, as well as the development of applications for embedded systems.

CV Lattes

Current Research and Development Projects
Research in Video Coding more_vert

Partners: Edson Mintsu Hung, Eduardo Peixoto and Bruno Macchiavello (UnB), Debargha Mukherjee and Zoe Liu (Google Sponsors)

Funding: Google (Google Research Award)

Research in Video Coding close

Improvement of wedge partition techniques used in VP10 Google’s Codec using a boundary based block partition

Video coding is, essentially, an enabling technology. The video data is not compressed for the sake of compression, it is compressed in order to transmit or store more content using the same resources. Most applications would not be feasible without video compression, as the amount of data required would be extremely high. In this project, we aim to improve the performance of motion estimation, an essential tool in all hybrid DPCM/DCT video codecs, by better adapting the prediction step of the codec. The developed algorithms will be implemented in Google's VP10 open source codec.

Energy Quality Hardware more_vert

Partners: UnB, ZTec

Funding: Eletronorte, Intesa

Hardware for Energy Quality close

Participants: Francisco Assis de Oliveira Nascimento (Coordinator), Raimundo Saraiva Jr, Anésio de Leles Ferreira Filho, Florêncio Ayres da Silva Filho, Jorge Andrés Cormane Angarita, Eduardo Peixoto, Fernando Guimarães.

This project aims to develop a low cost equipment to measure energy quality parameters. The project comprises the complete development of this equipment, both in hardware and software.

Fast Video Coding more_vert

Partners: Eduardo Peixoto (Coordinator), Edson Mintsu Hung and Bruno Macchiavello

Funding: Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Edital Universal

Fast Video Coding close

Development of Fast Algorithms for Video Coding in the HEVC Standard (Desenvolvimento de Métodos Rápidos para Codificação de Vídeo no novo padrão HEVC)

Digital video comsumption has grown exponentially in recent years. Today, we watch video content not only through television, but through the internet as well, whether using personal computers, tablets or mobile phones. At the same time, the quality of the consumed video has improved tremendously in this period - it is common nowadays to watch high resolution (HD) videos through online video streaming. However, transmitting higher quality videos require higher bandwidth. For this reason, the ITU-T and the ISO-IEC released, in 2013, a new video coding standard, so called High Efficiency Video Coding (HEVC). This new standard achieves the same video quality as its predecessor, the H.264/AVC, with only half of the bitrate. However, in order to achieve this efficiency, the new encoder needs much more computational power than the H.264/AVC. Therefore, the development of low complexity, fast encoding algorithms for the HEVC is a highly competitive field, with immediate application. This project focuses on the development of fast video coding algorithms for the HEVC, especially for high definition (1920 x 1080) and ultra-HD (4K, or 3840 x 2160) content.

Monitoring Heart Rate through Video more_vert

Participants: Otávio Dias, Maximillian Xavier, Eduardo Peixoto

Monitoring Heart Rate through Video close

Heart rate monitoring is an important tool in medicine. The most common methods for measuring the heart rate are the use of chest straps, adhesive electrodes or oximeter sensors. All these techniques require some sort of contact with the patient, which may be undesirable in some cases. The aquisition of this signal without physical contact with the patient is desirable as it simplifies some applications, such as neo-natal ICU, long term monitoring, sleep pattern studies, among others.

In the last decade it has been shown that images of the face of a patient contain sufficient data to measure some important biological signals, such as the heart rate and the arterial pressure. The first studies used thermal images to acquire these signals howeve, recently, some algorithms were shown to be able to gather this information using common video cameras in ambient light.

The main goal of this project is to develop and implement algorithms for heart rate monitoring using just the data from a simple webcam. This algorithm should work in real time, being able to film the face of a person and output an estimative for this person heart rate.

Research in Video Transcoding more_vert

Partners: Ricardo L. de Queiroz, Edson Mintsu Hung, Bruno Macchiavello, Alexandre Zaghetto, Filipe Teixeira

Research in Video Transcoding close

Recently, a new video coding standard has been ratified, so called High Efficiency Video Coding (HEVC). This new standard offers a much better performance compared to its predecessor, the H.264/AVC. The H.264/AVC standard is very successful and it has been widely adopted, both by physical media, internet streaming services and some broadcast and cable television services. Video transcoding is the process that converts from one compressed bitstream (called the source or incoming bitstream) to another compressed bitstream (called the transcoded or outgoing bitstream). The motivation for an H.264/AVC to HEVC transcoder is twofold: (i) to promote inter-operability for the legacy video encoded in H.264/AVC format; and (ii) to be able to take advantage of the superior RD performance of the HEVC, especially for systems that have extensive video libraries. This project focus on developing new algorithms for video transcoding, in particular from H.264/AVC to the current HEVC standard.

Study of Plenoptic Cameras more_vert

Participants: Bruno Pessoa Chaves, Eduardo Peixoto

Study of Plenoptic Cameras close

Conventional Cameras capture only the intensity of light in each point, losing the information about the direction of the incident light rays. Plenoptic cameras, also known as light field cameras, are able to capture not only the intensity, but the direction of the light rays, thus obtaining much more information about the scene than conventional cameras.

An important application for these cameras is the estimation of depth maps, i.e., a map of of the scene that estimates the distance from each object to the camera. These depth maps have broad applications, such as to add or remove blur in the images, as well as to make a 3D scene from the images.

The main goal of this project is to develop algorithms to estimate depth maps from data obtained from a Lytro camera, a low cost first generation plenoptic camera.

Past Projects
Thira - Research in Video Coding more_vert

Collaboration on project with Queen Mary, University of London

Thira - Research in Video Coding close

Enabling Technologies for High Resolution Content Exchange and Delivery (Thira)

THIRA is a collaborative project led by the BBC and co-funded by the Technology Strategy Board which addresses usage of larger resolution video formats. Recent advances in video capturing and display technologies provide audiences with higher spatial and temporal resolution content. After High Definition (HD), nowadays Ultra High Definition (UHD) aims to further improve users' quality-of-experience at the cost of increased storage capacity and bandwidth. Ultra high definition targets two formats with 16:9 aspect ratio: the first has twice the width of HD while the second has four times the width of HD. To properly handle the data rates associate to UHD content, the H.265/High Efficiency Video Coding (H.265/HEVC) standard will be mainly used. H.265/HEVC is the newly ratified video compression standard developed by both ITU VCEG and ISO/IEC MPEG in a joint partnership called the Joint Collaborative Team on Video Coding (JCT-VC). HEVC results from a joint VCEG and MPEG call for proposals on compression technology able to achieve the same perceived quality of the H.264/AVC standard by halving the required bitrate. The H.265/HEVC standard provides a base for handling ultra high resolution content. Underpinning the capabilities of HEVC are computationally expensive, extremely complex and resource demanding algorithms. Consequently, in its current state, H.265/HEVC is unfeasible for practical applications involving very high definition content. THIRA aims to facilitate storage and transmission of the huge amounts of data contained in very high resolution content using the H.265/HEVC standard.

Research in Image and Video more_vert

Participants: Ricardo L. de Queiroz (Coordinator), Edson Mintsu Hung, Bruno Macchiavello, Rafael Galvão de Oliveira, Tiago Alves da Fonseca, Alexandre Zaghetto, Fernanda Brandi, Eduardo Peixoto, Karen França de Oliveira, Renan Utida Ferreira, Diogo Caetano Garcia, Camilo Chang Dórea, Thacio Scandarolli, Frederico Nogueira Leite

Partners: HP Labs Palo Alto

Research in Image and Video close

This long term project was funded by HP Brasil and it had a collaboration with HP Labs in Palo Alto, California.

This project funded six PhD scholarships and more than ten MSc scholarships for many researchers, many of whom are now Adjunct Professors at UnB.

The project itself had several threads, including research in Distributed Video Coding, Video Transcoding, Super-Resolution, 3D-Video, Document Compression, Motion Estimation and Compensation and Directional Transforms for use in Image Coding.

I am currently seeking for motivated students for Final Projects, M.Sc. or Ph.D. Check the research projects and contact me directly.

MSc Students
Gustavo L. Sandri
  • Automated Non-Contact Heart Rate Measurement using Conventional Cameras
    Gustavo Luiz Sandri
    Advisor: Ricardo L. de Queiroz
    Co-Advisor: Eduardo Peixoto
    Universidade de Brasília, February 2016
Gabriel Lemes S. L. de Oliveira
  • Motion Compensation with Minimal Residue Dispersion Matching Criteria
    Gabriel Lemes Silva Luciano de Oliveira
    Advisor: Ricardo L. de Queiroz
    Co-Advisor: Eduardo Peixoto
    Universidade de Brasília, February 2016
Undergraduate Students
Filipe de Castro Borges da Silveira
  • Estudo do Feature de Fase dos Vetores de Movimento em um Transcodificador H.264/HEVC
    Filipe de Castro Borges da Silveira
    Advisor: Eduardo Peixoto
    Curso: Engenharia da Elétrica
    Universidade de Brasília, July 2016
Charles Cardoso de Oliveira
  • Sistema Embarcado em Conjunto com Aplicativo Android para Monitoramento do Desempenho e Percurso do Ciclista
    Charles Cardoso de Oliveira
    Advisor: Eduardo Peixoto
    Curso: Engenharia da Computação
    Universidade de Brasília, December 2015
Scientific Initiation Program Students (Undergraduate Students)
Bruno Pessoa Chaves
  • Desenvolvimento de algoritmos para gerar mapas de profundidade para câmeras plenóticas
    Bruno Pessoa Chaves
    Advisor: Eduardo Peixoto
    Main Project: Estudo de Câmeras Plenóticas
    Universidade de Brasília, Edital ProIC 2016/2017
Otávio Alves Dias
  • Estimativa do Monitoramento de Frequência Cardíaca
    Otávio Alves Dias
    Advisor: Eduardo Peixoto
    Main Project: Monitoramento da Frequência Cardíaca utilizando Câmeras de Vídeo
    Universidade de Brasília, Edital ProIC 2015/2016
Maximillian Fan Xavier
  • Desenvolvimento de Software para Estimação de Frequência Cardíaca Baseado em Cameras de Vídeo
    Maximillian Fan Xavier
    Advisor: Eduardo Peixoto
    Main Project: Monitoramento da Frequência Cardíaca utilizando Câmeras de Vídeo
    Universidade de Brasília, Edital ProIC 2015/2016
Filipe de Castro Borges da Silveira
  • Estudo do Feature de Fase dos Vetores de Movimento em um Transcodificador H.264/HEVC
    Filipe de Castro Borges da Silveira
    Advisor: Eduardo Peixoto
    Main Project: Pesquisa em Transcodificação de Vídeo
    Universidade de Brasília, Edital ProIC 2015/2016
Journal Papers
  • Inter-Prediction Optimizations for Video Coding Using Adaptive Coding Unit Visiting Order
    Ivan Zupancic, S. G. Blasi, Eduardo Peixoto and Ebroul Izquierdo
    2016 IEEE Transactions on Multimedia
  • H.264/AVC to HEVC Video Transcoder Based on Dynamic Thresholding and Content Modeling
    Eduardo Peixoto, Tamer Shanableh and Ebroul Izquierdo
    2014 IEEE Transactions on Circuits and Systems for Video Technology
  • MPEG-2 to HEVC Video Transcoding with Content-Based Modeling
    Tamer Shanableh, Eduardo Peixoto and Ebroul Izquierdo
    2013 IEEE Transactions on Circuits and Systems for Video Technology
  • Enhanced Inter-Prediction via Shifting Transformation in the H.264/AVC
    Saverio G. Blasi, Eduardo Peixoto and Ebroul Izquierdo
    2013 IEEE Transactions on Circuits and Systems for Video Technology
  • Transcoding from Hybrid Non-scalable to Wavelet-Based Scalable Video Codecs
    Eduardo Peixoto, Toni Zgaljic and Ebroul Izquierdo
    2012 IEEE Transactions on Circuits and Systems for Video Technology
  • A Wyner–Ziv Video Transcoder
    Eduardo Peixoto, Ricardo L. de Queiroz and Debargha Mukherjee
    2010 IEEE Transactions on Circuits and Systems for Video Technology
  • Side-Information Generation for Temporally and Spatially Scalable Wyner-Ziv Codecs
    Bruno Macchiavello, Fernanda Brandi, Eduardo Peixoto, Ricardo L. de Queiroz, and Debargha Mukherjee
    2009 EURASIP Journal on Image and Video Processing
Conference Papers
  • Context Adaptive Mode Sorting for Fast HEVC Mode Decision
    Saverio G. Blasi, Eduardo Peixoto, Bruno Macchiavello, Edson Mintsu Hung, Ivan Zupancic and Ebroul Izquierdo
    2015 IEEE International Conference on Image Processing (ICIP 2015)
  • Fast HEVC Coding using Reverse CU Visiting
    Saverio G. Blasi, Ivan Zupancic, Ebroul Izquierdo and Eduardo Peixoto
    2015 Picture Coding Symposium (PCS 2015)
  • Adaptive Precision Motion Estimation for HEVC Coding
    Saverio G. Blasi, Ivan Zupancic, Ebroul Izquierdo and Eduardo Peixoto
    2015 Picture Coding Symposium (PCS 2015)
  • A Fast HEVC Transcoder based on Content Modeling and Early Termination
    Eduardo Peixoto, Bruno Macchiavello, Edson Mintsu Hung and Ricardo L. de Queiroz
    2014 - IEEE International Conference on Image Processing (ICIP 2014)
  • Fast H.264/AVC to HEVC Transcoding based on Machine Learning
    Eduardo Peixoto, Bruno Macchiavello, Ricardo. L. de Queiroz and Edson Mintsu Hung
    2014 - International Telecommunications Symposium (ITS 2014)
  • An H.264/AVC to HEVC Video Transcoder based on Mode Mapping
    Eduardo Peixoto, Bruno Macchiavello, Edson Mintsu Hung, Alexandre Zaghetto, Tamer Shanableh and Ebroul Izquierdo
    2013 IEEE International Conference on Image Processing (ICIP 2013)
  • Mode Decision with Enhanced Inter-Prediction in HEVC
    Saverio G. Blasi, Eduardo Peixoto and Ebroul Izquierdo
    2013 IEEE International Conference on Image Processing (ICIP 2013)
  • Enhanced Inter-Prediction using Merge Prediction Transformation in the HEVC Codec
    Saverio G. Blasi, Eduardo Peixoto and Ebroul Izquierdo
    2013 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2013)
  • A Complexity-Scalable Transcoder from H.264/AVC to the New HEVC Codec
    Eduardo Peixoto and Ebroul Izquierdo
    2012 IEEE International Conference on Image Processing (ICIP 2012)
  • Application of Large Macroblocks in H.264/AVC to Wavelet-Based Scalable Video Transcoding
    Eduardo Peixoto, Toni Zgaljic and Ebroul Izquierdo
    2011 European Signal Processing Conference (EUSIPCO 2011)
  • H.264/AVC to Wavelet-Based Scalable Video Transcoding Supporting Multiple Coding Configurations
    Eduardo Peixoto, Toni Zgaljic and Ebroul Izquierdo
    2010 Picture Coding Symposium (PCS 2010)
  • Transcoding from H.264/AVC to a Wavelet-Based Scalable Video Codec
    Eduardo Peixoto, Toni Zgaljic and Ebroul Izquierdo
    2010 IEEE International Conference on Image Processing (ICIP 2010)
  • Mapping Motion Vectors for a Wyner-Ziv Video Transcoder
    Eduardo Peixoto, Ricardo L. de Queiroz and Debargha Mukherjee
    2009 IEEE International Conference on Image Processing (ICIP 2009)
  • Mobile Video Communications Using a Wyner-Ziv Transcoder
    Eduardo Peixoto, Ricardo L. de Queiroz and Debargha Mukherjee
    2008 Visual Communications and Image Processing (VCIP 2008)
National Conference Papers
  • Estimação de Movimento com Medidas de Dispersão do Resíduo de Predição (in portuguese)
    Gabriel Lemes S. L. de Oliveira, Eduardo Peixoto e Ricardo L. de Queiroz
    2015 - Simpósio Brasileiro de Telecomunicações (SBrT 2015)
  • Detecção automática de pulso cardíaco utilizando imagens de vídeo (in portuguese)
    Gustavo L. Sandri, Ricardo L. de Queiroz e Eduardo Peixoto
    2015 - Simpósio Brasileiro de Telecomunicações (SBrT 2015)
  • On Side Information Generation for Wyner-Ziv Video Coding
    Eduardo Peixoto, Ricardo L. de Queiroz and Debargha Mukherjee
    2008 - Simpósio Brasileiro de Telecomunicações (SBrT 2008)
  • A Video Coding Framework with Spatial Scalability
    Bruno Macchiavello, Eduardo Peixoto and Ricardo L. de Queiroz
    2007 - Simpósio Brasileiro de Telecomunicações (SBrT 2007)
Thesis and Dissertation
  • PhD Thesis: Advanced Heterogeneous Video Transcoding
    Eduardo Peixoto
    Queen Mary, University of London, 2012
  • MSc Thesis: Mobile Video Communications using a Wyner-Ziv/H.263 Video Transcoder (Transcodificador de Vídeo Wyner-Ziv/H.263 para Comunicação entre dispositivos móveis) (In Portuguese)
    Eduardo Peixoto
    Universidade de Brasília, 2008
Patents
  • Coding and Decoding a Video Signal Including Generating and Using a Modified Residual and/or Modified Prediction Signal
    Ebroul Izquierdo, Eduardo Peixoto Fernandes da Silva and Saverio Giovanni Blasi
    Queen Mary and Westfield College
Awards
  • Best 10% Paper Award : Context Adaptive Mode Sorting for Fast HEVC Mode Decision
    Saverio G. Blasi, Eduardo Peixoto, Bruno Macchiavello, Edson Mintsu Hung, Ivan Zupancic and Ebroul Izquierdo
    2015 IEEE International Conference on Image Processing (ICIP 2015)
  • Top 10% Paper Award : A Fast HEVC Transcoder based on Content Modeling and Early Termination
    Eduardo Peixoto, Bruno Macchiavello, Edson Mintsu Hung and Ricardo L. de Queiroz
    2014 - IEEE International Conference on Image Processing (ICIP 2014)

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2016/01

111813 - Sistemas Digitais

111821 - Laboratório de Sistemas Digitais

2015/01

167983 - Sistemas Digitais 1

167746 - Laboratório de Arquitetura de Processadores Digitais

169935 - Tópicos Especiais em Processamento de Sinais (Microcontroladores MSP 430)

2014/02

167983 - Sistemas Digitais 1

167746 - Laboratório de Arquitetura de Processadores Digitais

167983 - Laboratório de Sistemas Digitais 1

2014/01

167746 - Laboratório de Arquitetura de Processadores Digitais

167983 - Laboratório de Sistemas Digitais 1