Circular Hough Transform for Iris localization
نویسندگان
چکیده
منابع مشابه
Circular Hough Transform for Iris localization
Th is article p resents a robust method for detecting iris features in frontal face images based on circular Hough transform. The software of the applicat ion is based on detecting the circles surrounding the exterio r iris pattern from a set of facial images in d ifferent color spaces. The circular Hough transform is used for this purpose. First an edge detection technique is used for finding ...
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In this paper, a new iris localization method for mobile devices is presented. Our system uses both intensity and saturation threshold on the captured eye images to determine iris boundary and sclera area, respectively. Estimated iris boundary pixels which have been placed outside the sclera will be removed. The remaining pixels are mainly the boundary of iris inside the sclera. Then, circular ...
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Occlusion, reflections and iris shape deformations are the obstacles that stand in the way of a complete solution to iris localization problem. How to reject outliers caused by occlusion and reflections as much as possible before ellipse or spline fitting is a key challenge. For this reason, we proposed a Hough clustering method, which utilizes the shape configuration of iris edge points and th...
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This paper presents an efficient iris segmentation algorithm. It uses an improved circular Hough transform to detect the inner boundary and the integro-differential operator to detect the outer boundary of iris from a given eye image. Search space of the standard circular Hough transform is reduced from three dimensions (center coordinates and radius) to only one dimension, which is the radius....
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We introduce a new technique for the blind localization of several sound sources from two binaural signals. First, the binaural signals are organized as two-dimensional data where each sound source appears as a line. Second, the Hough transform is used to recognize these lines. The slopes of the lines give the mixing coefficients and directions of arrival (azimuths). Two variants of our techniq...
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ژورنال
عنوان ژورنال: Science and Technology
سال: 2012
ISSN: 2163-2669
DOI: 10.5923/j.scit.20120205.02