Fu Liye transform is the transformation of image from space domain to frequency domain. Spatial domain: in general, the image in the spatial domain is f (x, y) = gray level (0-255), and the image is a two-dimensional matrix, and each coordinate corresponds to a color value. Frequency domain: frequency: for images can refer to gradient image color values, i.e. the rate of change of gray level range can be simply understood as the right that the frequency of the frequency, the proportion of energy (= range may not be accurate), transform results for F (U, V), F on behalf of amplitude values, u represents the direction of X V frequency, Y direction frequency

Filename	Size	Update
新建 Microsoft Word 文档.docx	14208	2017-11-23

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