wcompress

Hi everybody, can someone please help me with this error, below is my code....

The CR_testImage.tif is unit8 59x64x3

X = imread('CR_testImage.tif');     

[CR,BPP] = wcompress('c',X,'w_test.wtc','spiht','maxloop',12);

Xc = wcompress('u','w_test.wtc');

subplot(1,2,1); image(X);

axis square;

title('Original Image')

subplot(1,2,2); image(Xc);

axis square;

title('Compressed Image - 12 steps - bior4.4')

delete('w_test.wtc')

*When I run this code the message show..

??? Subscript indices must either be real positive integers or logicals.

Error in ==> wtc_spiht>wtc_spiht_dec at 524
                                Signific_MAT(idx_CHILD+d_PIX_Plan) = ...

Error in ==> wtc_spiht at 23
    case 2 , [varargout{1:nbout}] = wtc_spiht_dec(varargin{:});

Error in ==> wtcmngr at 98
        [varargout{1:nbout}] = funHDL('dec',WTC_Struct,stepFLAG);

Error in ==> wcompress at 452
        X_decoded = wtcmngr('read',inputFile,stepFLAG);

Error in ==> Test_wc6 at 11
Xc = wcompress('u','w_test.wtc');

Thank you in advance..

Warin

Answer 1

[Wayne King]

You need to extend the one dimension of your image to the next power of 2 - 64x64x3, you can pad with zeros, see wextend() for help, then the above will work.

For example:

X = randi([0 255],64,64,3,'uint8');

[warinthorn Kiadti]

Thank you very much Wayne..

Do I have to extend the dimension of every input image to be power of 2? or Just this case...