Description: High frequency emphasis filter and the gradation conversion for image enhancement: 1. Main.m main 2. Paddedsize.m add the image to the size of the smallest square formed close to an integer power of 2. 3. Dftfilt.m input image f and a filter function that returns the filtered and trimmed image g. 4. Dftuv.m provide frequency domain coordinate grid. 5. Lpfilter.m several commonly used low-pass filter. 6. Hpfilter.m high-pass filter. 7. BodyImage.JPG test image Note: 1. Before running the program, please read the main.m change the image path. 2. Main.m the gradation conversion section of the code is only applicable to the above test images. Analysis should be applied to other image histogram after this part of the program to be modified.
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File list (Check if you may need any files):
BodyImage.JPG
dftflit.m
dftuv.m
hpfliter.m
lpfliter.m
main.m
paddedsize.m
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