ppmtoexr(1) General Commands Manual ppmtoexr(1)NAME
ppmtoexr - convert a PPM image to OpenEXR format
SYNOPSIS
ppmtoexr input.ppm output.exr
DESCRIPTION
Converts a PPM file to an EXR file in [0,1]. If the input is 8 bit per channel, the input is gamma corrected according to the PPM stan-
dard. Images which are 16 bit per pixel are treated as linear intensity values.
This program works with the 48 bit per pixel PPM files output by the dcraw program for converting from raw pixel formats found on many dig-
ital cameras.
AUTHORS
Billy Biggs <vektor@dumbterm.net>.
SEE ALSO exrtools(1), dcraw(1), ppm(5).
exrtools 0.4 December 2003 ppmtoexr(1)
Check Out this Related Man Page
The PNM Format(5) File Formats Manual The PNM Format(5)NAME
pnm - Netpbm superformat
DESCRIPTION
The PNM format is just an abstraction of the PBM, PGM, and PPM formats. I.e. the name 'PNM' refers collectively to PBM, PGM, and PPM.
The name 'PNM' is an acronym derived from 'Portable Any Map.' This derivation makes more sense if you consider it in the context of the
other Netpbm format names: PBM, PGM, and PPM.
The more general term 'Netpbm format' refers to the PNM formats plus PAM.
PNM is principally used with Netpbm(1)
Note that besides being names of formats, PBM, PGM, PPM, and PNM are also classes of programs. A PNM program can take PBM, PGM, or PPM
input. That's nothing special -- a PPM program can too. But a PNM program can often produce multiple output formats as well, and a PNM
program can see the difference between PBM, PGM, and PPM input and respond to each differently whereas a PPM program sees everything as if
it were PPM. This is discussed more in the description of the netpbm programs (1)
'pnm' also appears in the names of the most general Netpbmlibraryroutines(3) , some of which aren't even related to the PNM format.
SEE ALSO ppm(5) , pgm(5) , pbm(5) , pam(5) , programsthatprocessPNM(1) , libnetpbm(3)netpbm documentation 03 October 2003 The PNM Format(5)
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