Read an 16 unsigned bits image...

Hello Everybody,

I have a question really stupid but I do not know how how to open a 16 unsigned bit image.

To do that, I use the following program:

f = fopen('ucam.dat','r'); 
part_corr = fread(f, 80*60, 'ubit16','ieee-be');

fclose (f);

im=reshape(part_corr,80,60);

imagesc(im')

You will find to my website the original data: http://130.120.117.103/Stations/France/TEST/ucam.dat

My result http://130.120.117.103/Stations/France/TEST/result.jpg

and what I want to obtain with matlab http://130.120.117.103/Stations/France/TEST/ucam.JPG

I hope you will find a good representation. In my doc, it is written:

16 bit color and resolution: 80x60

Thanks for advance!!!

[Image Analyst]

Well it looks like your result is what you wanted to obtain, or more likely you just pasted the wrong link.

[freluque]

Yes I have corrected the link :)

!

[Image Analyst]

No you didn't.

[freluque]

sorry :) now it works concerning my link! I hope you will find the solution , i am a little confused about the image in matlab :(

Answer 1

[freluque]

I have done this conversion and it is working... Because my pixel was coded in RGB565...

 f = fopen('ucam.dat','r'); 
%part_corr = fread(f, 81*60, 'ubit16','ieee-be');
im=fread(f, [80, 60], '*uint16', 'ieee-be');
fclose (f);
imgR = uint8((255/31)*bitshift(bitand(im,63488),-11));  %# Red component
imgG = uint8((255/63)*bitshift(bitand(im,2016),-5));    %# Green component
imgB = uint8((255/31)*bitand(im,31));                   %# Blue component
imshow(imgRGB)

Answer 2

[Image Analyst]

Did you try it like this, to avoid having to reshape:

 fread(fid, [80, 60], '*uint16', 'ieee-be');

and are you sure there are no header bytes you need to skip?

[freluque]

same result :( with your code...