How to save variables as 16-bit signed integers?

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Agustin
Agustin il 27 Apr 2017
Hi! I have a dct_blk array and I need to save it as a 16-bit signed integers. I did the following:
A = dct_blk';
fileID = fopen('img03y.dq','w');
fwrite(fileID,A,'integer*2');
fclose(fileID);
I transponse dct_blk because I need to store it in raster order from left-to-right and moving from top-to-bottom. But when I read my saved binary with the following code
fileID = fopen('img03y.dq');
B = fread(fileID,[N M],'uint16');
B = B';
I'm not getting the same values as dct_blk. I'm getting large numbers where the negative values supposed to be. What can I be doing wrong? Any help will be greatly appreciated.
Thank you.

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