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In order to improve the precision of 3D reconstruction, a new composite coding way based on structure light is proposed. In this paper, color stripe pattern is used as basic coding element and intensity properties are introduced for every color stripes to design coding pattern. This coding pattern can be used to extract stripe peak and edge information on sub-pixel level. In the reconstruction we...
Coded structured light is an effective technique to acquiring shape in stereovision. Coding strategy is one of the core techniques because it effects the measure precision and efficiency directly. There are two major group of techniques in color structured light encoding. One is to define coloured multi-slit, which is suitable for locating intensity peaks in the image. The other is to define coloured...
This paper presents a color structured light technique for recovering object shape from images. Coding strategy is one of the most important techniques because it effects the measure precision and efficiency directly. Unlike traditional encoding methods, we design new coloured stripe patterns in order to locate both intensity peaks and edges. Then edge detection method with sub-pixel accuracy is performed...
This paper is concerned with shadow removal in color images. We propose a combined algorithm which is based on colorimetry and retinex theory. Our method can effectively remove shadow in color images, and meanwhile avoid intrinsic disadvantages of the two algorithms if they are used individually. It can be used as a pre-process step in some computer vision tasks such as image segmentation, motion...
This paper provides a novel and efficient technique to detect and visualize the important features of ocean-sources and sinks. First, based on K. Polthier's decomposition algorithm, the flow field is decomposed to detect critical points of sources and sinks. Then a novel method is proposed that detects periodic orbits and separatrices by considering attachment and seperation points. Last, a new systematic...
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