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.\" RCSid "$Id" |
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.\" RCSid "$Id$" |
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.TH PCOMB 1 8/31/96 RADIANCE |
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.SH NAME |
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pcomb - combine RADIANCE pictures |
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.SH SYNOPSIS |
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.B pcomb |
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[ |
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.B -h |
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][ |
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.B -w |
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][ |
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.B "\-x xres" |
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would return the red component of the pixel from picture 3 |
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that is left 2 and up 1 from the current position. |
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Although x offsets may be as large as width of the picture, |
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y offsets are limited to a small window (+/- 8 pixels) due to efficiency |
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y offsets are limited to a small window (+/- 32 pixels) due to efficiency |
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considerations. |
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However, it is not usually necessary to worry about this problem -- |
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if the requested offset is not available, the next best pixel is |
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gives the number of input files present, |
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and |
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.I WE |
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gives the white efficacy (lumens/brightness) for pixel values. |
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gives the white efficacy (lumens/brightness) for pixel values, |
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which may be used with the |
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.I \-o |
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option or the le(n) values to convert to absolute |
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photometric units (see below). |
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The variables |
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.I x |
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and |
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will return zero. |
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.PP |
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The |
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.I \-h |
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option may be used to reduce the information header size, which |
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can grow disproportionately after multiple runs of |
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.I pcomb |
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and/or |
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.I pcompos(1). |
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The |
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.I \-w |
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option can be used to suppress warning messages about invalid |
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calculations. |
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.SH AUTHOR |
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Greg Ward |
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.SH "SEE ALSO" |
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calc(1), getinfo(1), pcompos(1), pfilt(1), rpict(1) |
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getinfo(1), icalc(1), pcompos(1), pfilt(1), rpict(1) |
