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 Subject: Image Histogram From: Twilighter Date: 21 Jan, 2011 08:17:04 Message: 1 of 4 I need to know how to calculate the image histogram of an image after applying DWT transform thank you
 Subject: Image Histogram From: ImageAnalyst Date: 21 Jan, 2011 13:17:50 Message: 2 of 4 On Jan 21, 3:17 am, "Twilighter " wrote: > I need to know how to calculate the image histogram of an image after applying DWT transform > thank you -------------------------------------------------------------- What was wrong with imhist()? Your image needs to be scaled to 0-1 first but that's no problem.
 Subject: Image Histogram From: Twilighter Date: 22 Jan, 2011 09:01:07 Message: 3 of 4 > What was wrong with imhist()? > Your image needs to be scaled to 0-1 first but that's no problem. thank you ... i'm just a beginner, so i wasn't sure, which pre-processing or steps i'm supposed to consider to get the histogram of an image after applying the DWT ... so i have to normalize every sub-band individually, then apply imhist() , sorry but can you tell me how. i'm actually trying to calculate the entropy masking of all DWT sub-bands E = -sum(p. *log(p)) where p contains the count of histograms. thank you if you could help me further Regards.