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尝试这段代码时:
[X, map] = imread('pirate.tif'); [cA,cH,cV,cD] = dwt2(X, 'haar');
我收到以下错误:Undefined function 'dwt2' for input arguments of type 'uint8'。dwt2不应该处理 uint8 值吗?
谢谢你的时间...