Fernando P. Nava

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This paper presents a new technique to simultaneously estimate the depth map and the all-in-focus image of a scene, both at super-resolution, from a plenoptic camera. A plenoptic camera uses a microlens array to measure the radiance and direction of all the light rays in a scene. It is composed of n×n microlenses and each of them generates a m×m image.(More)
Change detection is an important part of many remote sensing applications. This paper addresses the problem of unsupervised pixel classification into 'Change' and 'No Change' classes based on Hidden Markov Random Field (HMRF) models. HMRF models have long been recognized as a method to enforce spatially coherent class assignment. The optimal classification(More)
CAFADIS is a patented camera (PCT/ES2007/000046) to measure wave-front phases and distances under different scenarios (from microns to kilometres), using highly specialised electronic technology, namely Graphics Processing Units (GPUs) and Field Programmable Gate Arrays (FPGAs). CAFADIS employs an optical system and innovative data processing techniques(More)
Automatic change detection from images of the same scene acquired at different times is a problem of widespread interest due to a large number of applications in diverse disciplines. Such applications include video surveillance, medical diagnosis treatment or remote sensing. Usually change detection in remote sensing involves the analysis of two registered,(More)
A technique is presented to construct a multiscale representation of planar contours based on the wavelet transform (WT). To generate this wavelet description, a partial 1-D discrete wavelet transform (DWT) is applied to the vertical and horizontal components of a length-parametrized planar curve. This multiscale representation descomposes the curve into(More)
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