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Error using reshape To RESHAPE the number of elements must not change. Error in loadFileYuv (line 18) imgYuv(:, :, 1) = reshape(buf, width, height).'; % reshape

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jeffin
jeffin on 7 Sep 2014
Answered: Star Strider on 7 Sep 2014
function [mov,imgRgb] = loadFileYuv(fileName, width, height, idxFrame)
fileId = fopen(fileName, 'r');
subSampleMat = [1, 1; 1, 1];
nrFrame = length(idxFrame);
for f = 1 : 1 : nrFrame
% search fileId position
sizeFrame = 1.5 * width * height;
fseek(fileId, (idxFrame(f) - 1) * sizeFrame, 'bof');
% read Y component
buf = fread(fileId, width * height, 'uchar');
* |imgYuv(:, :, 1) = reshape(buf, width, height).'; % reshape| * (line 18)
% read U component
buf = fread(fileId, width / 2 * height / 2, 'uchar');
imgYuv(:, :, 2) = kron(reshape(buf, width / 2, height / 2).', subSampleMat); % reshape and upsample
% read V component
buf = fread(fileId, width / 2 * height / 2, 'uchar');
imgYuv(:, :, 3) = kron(reshape(buf, width / 2, height / 2).', subSampleMat); % reshape and upsample
% normalize YUV values
% imgYuv = imgYuv / 255;
% convert YUV to RGB
imgRgb = reshape(convertYuvToRgb(reshape(imgYuv, height * width, 3)), height, width, 3);
end
fclose(fileId);
when i was trying to run the function i was getting error in the line
imgYuv(:, :, 1) = reshape(buf, width, height).';
Kindly help me.

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Star Strider
Star Strider on 7 Sep 2014
You are not reading what you believe you are reading from your file. I would check the size of ‘buf’ in line 17 (and probably the other such lines as well). (When I simulate Line 18 with known values, I don’t get the error.)

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