dwt2 decomposition of image

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vikash patel
vikash patel 2013-2-20
回答： mimi fcb 2017-4-7
m doing dwt decomposition of a image using command- [cA1,cH1,cV1,cD1] = dwt2(X,'db1');
when i display w=[ cA1 cH1 cV1 cD1] my cA1 part is not looking like my original image as given here.. http://www.mathworks.in/help/wavelet/ref/dwt2.html
please help someone..

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回答（2 个）

Obuli Yuvaraj
Obuli Yuvaraj 2013-3-30
CA1 is not a image you have given. It is actually a plot of co-efficients after passing the image into a low pass filter
mimi fcb
mimi fcb 2017-4-7

s'il vous plait comment decoper une image en 4 coupe

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