Importing an RGBA image from raw binary data?

Question

Problem: I have printed some binary data from gdb which I'd like to inspect as an image. I am able to do this with gimp if I parse the data as an RGBA raw image with width 251 and height 261. However, I'd like to use Wolfram to do this programatically.

I have tried

Import["/path/to/my/raw/image.bin", {"RawBitMap", 
  "Summary"}, ImageSize -> 251]

which almost works. The issue is that it parses as an RGB file (without an alpha channel), and so the image is totally corrupted.

Question: Is this possible in Wolfram?

Answer 1

This import format seems to be rather inflexible. The documentation, says,

Stores images as RGB or grayscale bitmaps at a resolution of 8 bits per channel.

Thus I would not bother with it.

Import as "Binary", use Partition to put the data into the desired form, then use Image to create the final image. I used something like this for a 150 by 150 image:

data = 
  ArrayReshape[
    Import["~/Downloads/r.rbm", "Binary"],
    {150, 150, 4}
  ];

Image[data, "Byte", ColorSpace -> "RGB"]