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Image encoding and decoding method and apparatus using edge systhesis and inverse wavelet transform
Image encoding and decoding method and apparatus using edge systhesis and inverse wavelet transform
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机译:使用边缘合成和逆小波变换的图像编码和解码方法和装置
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摘要
A digitized image is encoded by detecting edges in the image, encoding the position and sharpness of the detected edges, filtering the image by a low-pass filter to generate a low-frequency image, and encoding the low-frequency image. A digitized image encoded in this way is reconstructed by generating a horizontal edge image and a vertical edge image from the encoded edge position and sharpness information, synthesizing a pair of high-frequency images by filtering the horizontal and vertical edge images with an edge synthesis filter, decoding the low-frequency image, and performing an inverse wavelet transform on the decoded low-frequency image and the high-frequency images.
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