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This paper presents a segmentation algorithm of color block target captured by CCD camera based on region growing. In the new medical testing equipment system, CCD camera is needed to get circle target image of the device's detection card section, and find out the coordinates of the image center, delimit and analyze the color blocks, used to judge whether the detected object is normal. In order to...
Contourlet wavelet transform and improved Contourlet transform large redundancy disadvantages, this paper proposes A shape-adaptive wavelet-based contourlet coding method, First, the theory of shape-adaptive wavelet-based contourlet is discussed, and the video object is decomposed into three-level shape-adaptive wavelet-based contourlet according to the mask image. Then, an extend-SPIHT method is...
A novel robust watermark embedding and extracting algorithm in ridgelet domain is proposed. Since the ridgelet transform (RT) can efficiently represent image with linear singularities and has directional sensitivity, the image is first partitioned into small pieces. Firstly these small pieces are classified to different characteristic categories (with weak texture, strong texture) according to the...
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