Extract the initial characters from a canonical absolute path, and append those to a path string. Initial characters are '/' for Unix/Linux paths and

Search from the current directory up to the root looking for a ".badpixels" file, and fix those pixels now. */

Return values: 0 = white 1 = near white 2 = not white */

Return 0 if the image starts with compressed data, 1 if it starts with uncompressed low-order bits. In Canon compressed data, 0xff is always fo