How to use wcompress

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Sivert Bakken
Sivert Bakken 2018-2-28
编辑： Walter Roberson 2022-9-23
The following is stated in the documentation for wcompress: "X can be either a 2-D array containing an indexed image or a 3-D array of uint8 containing a truecolor image. Both the row and column size of the image must be powers of two."
Is there any way the 3-d image or datacube can be of a different type than uint8 and the rows and columns of something different than a number that is a power of two?
Is this possible or do I have to implement something myself?

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Walter Roberson
Walter Roberson 2018-3-1
The code tests for power of 2, so that cannot be changed.
The code does not test for uint8. In my test with 'wdr' compression, if I did not specify 'bpp', 16 then the compression ran through but the uncompression had values that were maximum 255. In my test with 'wdr' compression when I specified 'bpp' 16, then the compression ran through and I did enough tracing that it looks like it should have worked, but the data structures produced created errors in decompression.

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Abhishek Ballaney
https://in.mathworks.com/help/wavelet/ref/wcompress.html
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faten Abushmmala
faten Abushmmala 2022-9-23
is there another function in matlab for compressing 1D data (speech or any signal) that is equivlant for wcompress ?
Walter Roberson
Walter Roberson 2022-9-23
编辑：Walter Roberson 2022-9-23
Equivalent in what sense? What would it have to do differently than wcompress? There is a complete wavelet toolbox https://www.mathworks.com/help/wavelet/index.html

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