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Antônio FRANCISCO Junior

Antônio FRANCISCO Junior
ATONUS · RESEARH

PhD

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13
Publications
605
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23
Citations

Publications

Publications (13)
Conference Paper
Full-text available
This work presents the use of a temporal filter, named Dynamic Retina, instead of spatial-neighborhood operators to process the image. Originally, this kind of filter has been proposed for use in mobile robot platforms for analyzing sequences of images [1]. The use of this filter could be adapted to enhance the defects on the aluminum surfaces by t...
Article
Full-text available
This paper presents a new clever camera sensor, where relative pose determination is not needed, and the sensor is simultaneously capable of using vergence micromovements. Sweeping depth using vergence micromovements promises subpixel depth precision, measuring zero disparity at each time instant. We show that curves preserving zero disparity are e...
Article
Full-text available
A computer vision system for the analysis of spermatozoa population is described. An automatic system is suitable for this application since the needed parameters for morphological and motion analysis cannot be easily obtained by visual processes. The motion analysis problem can be synthesized as a matching problem between adjacent (in time) featur...
Conference Paper
We discuss the usage of Hering-Hillebrand deviation H in depth perception, be it machine vision or human vision
Article
Depth information can be computed from two cameras arranged in a stereo fashion by using continuous changes of the distance between the lens plane and the image plane (principal distance). This method has the advantage of computing over time the relative depth map with respect to an initial fixation point in space. Using continuous change on the pr...
Conference Paper
Relative depth information can be obtained using extremely fine vergence movements called vergence micromovements about the fixation point with almost no computation and without knowledge of camera parameters. The vergence micromovements approach uses a continuous vergence angle control with simultaneous computation of the local correspondence resp...
Conference Paper
A new approach in stereo vision is proposed in which 3D depth information is recovered using continuous vergence angle control with simultaneous local correspondence response. This technique relates elements with the same relative position in the left and right images for a continuous sequence of vergence angles. The approach considers the extremel...
Article
Full-text available
A new approach in stereo vision is proposed which recovers 3D depth information using continuous vergence angle control with simultaneous local correspondence response. This technique relates elements with the same relative position in the left and right images for a continuous sequence of vergence angles. the approach considers the extremely fine...
Article
This work presents a massively parallel system that being built at INPE, based on the GAPP device, for image processing applications. This parallel system will operate as coprocessor of a PC-like microcomputer. After introducing the architecture, a preliminar evaluation of the system is show followed by a description of the software environment tha...
Article
Imagens de satelite constituem uma ferramenta extremamente poderosa e de custo relativamente baixo para a solucao de varios problemas de uso eficiente dos recursos terrestres. As caracteristicas de repetitividade, varias bandas espectrais e outras tornam as imagens obtidas por plataformas orbitais um instrumento atraente em inumeras aplicacoes. Emb...

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