Super-resolution sparse representation method
A sparse reconstruction and super-resolution technology, applied in the field of image processing
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[0032] Such as figure 1 As shown, this super-resolution sparse reconstruction method includes the following steps:
[0033] (1) Carry out space transformation on a given low-resolution color image to obtain its YCbCr space image, where Y is the nonlinear brightness component, Cb is the blue color difference component, Cr is the red color difference component, and the interpolation method is used for the Cb and Cr components carry out reconstruction;
[0034] (2) Construct a database for training, that is, a high-resolution image block X h and the low-resolution image block X l , and combined into database X;
[0035] (3) Use the sparse coding Sparse Coding method to generate a dictionary D for the database X, and decompose it into a dictionary D of high-resolution images h and a dictionary D of low-resolution images l ;
[0036] (4) Use D l The feature image corresponding to the image that is 2 times upsampled from the low-resolution image is used to solve the sparse co...
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