MATLAB: Error using Imread with ‘PixelRegion’ option

Question

Hello,

I am having problems using imread.

Following code causes an error, imgName is full file address '/…/name.jpeg'

>> imread(imgName, 'PixelRegion',{[10, 20],[10, 20]})
Error using imagesci/private/readjpg
Too many input arguments.
Error in imread (line 438)
    [X, map] = feval(fmt_s.read, filename, extraArgs{:});

I have tried to modify the input arguments according to few tutorials but I still receive this error. I am usnig Matlab R2011b.

Thanks for answer.

Answer 1

That only works for JPEG 2000 format images. Are you sure your image is of that format? Otherwise read in the whole thing and extract:

grayImage = imread(fullFileName);
subImage = grayImage(10:20, 10:20);