I have need for a couple of new or private chunks for PNG image files
that I think would be useful to the general public and I do not want to
reinvent them if not necessary. The following descriptions are not
detailed enough to define a new chuck. I only want to know if others
have suggested the same or similar chunks. If there are similar
chunks proposed I would like to use them.
The first would be a chunk to tell the display program if the original
image was from a Bayer pattern sensor and if so the color order of the
sensor and if the original Bayer image can be retrieved from the RGB
values. This would allow an editor to change the Bayer interpolation.
This would not be a
critical chunk. This chunk would only be used in RGB or RGBA images.
There would be only one of these chunks per image. If no chuck that
has the same or similar purpose has been proposed I would suggest
naming the chunk "baYR".
The second chunk would be to define a few simple drawing overlay
objects. The objects would be something like line, poly lines, box,
oval and maybe text. Attributes would be line thickness, line color
and fill color. The colors would have to match the image type. There
could be many of these chunks per image. If no chuck that has the same
or similar purpose has been proposed I would suggest naming the chunk
Thank you for your time,
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