In article <390dace8@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   I counted about 105 MB, not 10.5 MB. That's a whole lot more.

It sure is, you are off by a factor of 10.

1024*768 = 786432
5 color components per pixel at 2 bytes each, plus one depth value at 4 
bytes:
14 bytes per pixel

786432*14 = 11010048 bytes per 1024*768 image processed with filters 
using depth and color(the two most commonly used variables).

11010048/1048576(the number of bytes in a megabyte) = 10.5 MB.

Remember that only the necessary information is saved...I think 
"find_edges" and "normal" are the only ones which use normal 
information, and none use UV coordinates or intersection point. 
Including the post_process filters I made, the only ones which use depth 
are "stars", "normal", "find_edges", "focal_blur", and "depth". Most 
only use color information, which has to be stored in some form anyway. 
If only those filters are used, you have a 7.5MB temporary file for a 
1024*768 image.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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