Jose Luis Robles

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INTRODUCTION Dramatic population growth in the US-Mexico border region suggests more effective family planning services are needed, yet binational data are scarce. The Brownsville-Matamoros Sister City Project for Women's Health collected binational, standardized data from 947 postpartum women in Cameron County (Texas) and Matamoros (Tamaulipas, Mexico)(More)
Alignment is a prevalent approach for recognizing three-dimensional objects in two-dimensional images. Current implementations handle errors that are inherent in images in ad hoc ways. This thesis shows that these errors can propagate and magnify through the alignment computations, such that the ad hoc approaches may not work. In addition, a technique is(More)
Wheat stem rust, caused by Puccinia graminis f. sp. tritici, is a major wheat disease which is mainly controlled through the release of resistant cultivars containing one or several resistance genes. Considerable effort has been put into the discovery of new resistance genes, but knowledge of their mechanisms of action is often lacking. In this study, the(More)
This thesis addresses the general problem of how to find globally consistent and accurate estimates of multiple-view camera geometry from uncalibrated imagery of an extended scene. After decades of study, the classic problem of recovering camera motion from image correspondences remains an active area of research. This is due to the practical difficulties(More)
Alignment i s a p r e v alent approach for recognizing three-dimensional objects in two-dimensional images. Current implementations handle errors that are inherent in images in ad hoc ways. This thesis shows that these errors can propagate and magnify through the alignment computations, such that the ad hoc approaches may n o t w ork. In addition, a(More)
Segmentation of medical imagery is a challenging problem due to the complexity of the images, as well as to the absence of models of the anatomy that fully capture the possible deformations in each structure. Brain tissue is a particularly complex structure, and its segmentation is an important step for studies in temporal change detection of morphology, as(More)
This thesis addresses the problem of visual recognition under two sources of variability: geometric and photometric. The geometric deals with the relation between 3D objects and their views under parallel, perspective, and central projection. The photometric deals with the relation between 3D matte objects and their images under changing illumination(More)
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