fwrite and fread: different dimensions for the same matrix

Please

I’m trying to save a 2160x4320 matrix as

>> fid = fopen([Path filename '.bin'],'wb');

>> fwrite(fid,filename,'uint8');

>> fclose(fid);

% with Path and filename = char

But it only saves a 12x1 vector, where am I wrong?

Thank you in advance

Answer 1

[Image Analyst]

Because you're writing out the filename string , not the matrix.

Try

fwrite(fid, yourMatrix,'uint8');

By the way, since this appears to be a uint8 image, why not use imwrite() and use a standard image file format such as PNG? Why use .bin and fwrite()?

[Simon Lind]

nice! thank you!