John Francis wrote:
OK - here's as close to the RAW sensor data as you are likely to get.
<http://panix.com/~johnf/temp/pef1127.jpg>
The only processing done here to go frow raw sensor data to RGB is:
o Fill in missing sample values (average of closest neighbours)
I'm wondering, do you think that the average is very fast, but probably sub-optimal, as it doesn't take into account any 1st & 2nd derivative effects? What do the other mechanisms use, bilinear or bi-cubic, or something else I wonder? Is the matrix designed to be treated as a square, or is there (x,y) information directly annotated or implicit in some fashion?
o Scale the R/G/B values based on what I believe to be the whiteJohn, where is that info in the file, is it a tag, or just some internal field?
balance scaling stored in the raw file by the camera.
o Convert from linear to sRGB colour space.
