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IMAGE FEATURE AMOUNT OUTPUT DEVICE, IMAGE RECOGNITION DEVICE, THE IMAGE FEATURE AMOUNT OUTPUT PROGRAM, AND IMAGE RECOGNITION PROGRAM
IMAGE FEATURE AMOUNT OUTPUT DEVICE, IMAGE RECOGNITION DEVICE, THE IMAGE FEATURE AMOUNT OUTPUT PROGRAM, AND IMAGE RECOGNITION PROGRAM
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机译:图像特征量输出设备,图像识别设备,图像特征量输出程序和图像识别程序
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摘要
An image processing device converts an image that is a recognition object image to high-resolution, medium-resolution, and low-resolution images. The device sets the pixel of interest of the high-resolution image, and votes the co-occurrence in a gradient direction with offset pixels, the co-occurrence in the gradient direction pixels in the medium-resolution image, and the co-occurrence in the gradient direction pixels in the low-resolution image, to a co-occurrence matrix. The device creates such a co-occurrence matrix for each pixel combination and for each resolution. The device executes the process on each of the pixels of the high-resolution image, and creates a co-occurrence histogram wherein the elements of a plurality of co-occurrence matrices are arranged in a line. The device normalizes the co-occurrence histogram and extracts, as a feature quantity of the image, a vector quantity having as a component a frequency resulting from the normalization.
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