Hi there
I have an uncompressed RGBA Tiff file
(RGB + alpha channel) which I'm trying to
split into two data files, one containing
the RGB data, and the other
containing the alpha (transparency) data.
Here's a code snippet showing my (probably misguided)
attempt at doing this:
image_read_info< tiff_tag >
info = read_image_info(in, tiff_tag());
if ( info._photometric_interpretation == 2
&& info._samples_per_pixel == 4 ) {
// RGBA
rgba8_image_t
rgba_img;
// Read RGBA image ...
read_image(in, rgba_img, tiff_tag());
// Set up planar image (to extract alpha channel) and rgb image
// (to extract rgb data)
rgba8_planar_image_t
dst_planar_image(rgba_img.dimensions());
rgb8_image_t
dst_rgb_image(rgba_img.dimensions() );
// Convert pixels to appropriate view
copy_and_convert_pixels(view(rgba_img), view(dst_rgb_image));
copy_and_convert_pixels(view(rgba_img), view(dst_planar_image));
// Write out data
ofstream
out((ofilename+"rbg").c_str(), ios_base::binary),
alphaout((ofilename +"alpha").c_str(), ios_base::binary);
out.write(reinterpret_cast