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+.\" This man page was generated by the Netpbm tool 'makeman' from HTML source.
+.\" Do not hand-hack it!  If you have bug fixes or improvements, please find
+.\" the corresponding HTML page on the Netpbm website, generate a patch
+.\" against that, and send it to the Netpbm maintainer.
+.TH "Pambayer User Manual" 0 "18 August 2005" "netpbm documentation"
+
+.SH NAME
+pambayer - interpret Bayer patterns
+
+.UN synopsis
+.SH SYNOPSIS
+
+\fBpambayer\fP
+\fB-type=\fP{\fB1\fP|\fB2\fP|\fB3\fP|\fB4\fP}
+[\fB-nointerpolate\fP]
+[\fIpamfile\fP]
+.PP
+Minimum unique abbreviation of option is acceptable.  You may use
+double hyphens instead of single hyphen to denote options.  You may use
+white space in place of the equals sign to separate an option name
+from its value.
+
+.UN description
+.SH DESCRIPTION
+.PP
+This program is part of
+.BR "Netpbm" (1)\c
+\&.
+.PP
+\fBpambayer\fP reads a Bayer pattern in a 1-deep Netpbm image and
+produces a color image in PAM RGB format as output.
+.PP
+A Bayer pattern is what you get from the optical sensor in some
+digital cameras.  Such a camera doesn't have a red, green, and blue
+sensor in the exact same place for an individual pixel.  Instead, it
+has red, green, and blue sensors laid out in a two dimensional array.
+The pattern in which they are laid out is the Bayer pattern.  The
+input to \fBpambayer\fP is one sample value for each of those
+sensors, so some samples are red, some are green, and some are blue.
+.PP
+\fBpambayer\fP turns that into a regular visual image with one pixel
+per sensor.  For the two components of each pixel that are missing in the
+corresponding Bayer input, \fBpambayer\fP averages the sample values from
+the adjacent pixels that do have that component.
+.PP
+But you can have \fBpambayer\fP fill in black instead (see the
+\fB-noninterpolate\fP option), which gives you a simpler representation of
+what the camera saw, on which you might do further processing.  Such an image
+still looks right, though considerably dimmer, if you stand far enough away
+and let your eyes do the interpolation.
+.PP
+The input image is a pseudo-PNM image (pseudo- because while the structure
+is the same, the sample values have different meanings) or PAM image of
+arbitrary tuple type.  \fBpambayer\fP looks at only the first plane of the
+input.
+.PP
+The output image is a PAM image of tuple type "RGB", i.e.
+a standard color image.  You can convert this to PPM with
+.BR "\fBpamtopnm\fP" (1)\c
+\&.
+.PP
+If you're interested in just one of the primary colors, use
+\fBpamchannel\fP on the output of \fBpambayer\fP to extract it.
+
+
+.UN options
+.SH OPTIONS
+.PP
+In addition to the options common to all programs based on libnetpbm
+(most notably \fB-quiet\fP, see 
+.UR index.html#commonoptions
+ Common Options
+.UE
+\&), \fBpambayer\fP recognizes the following
+command line options:
+
+
+
+.TP
+\fB-type=\fP\fIn\fP
+This tells which Bayer pattern the input is:
+
+
+.TP
+1
+GBG/RGR/GBG matrix
+.TP
+2
+RGR/GBG/RGR matrix
+.TP
+3
+BGB/GRG/BGB matrix
+.TP
+4
+GRG/BGB/GRG matrix
+
+
+This option is mandatory.
+
+.TP
+\fB-nointerpolate\fP
+Each output pixel position corresponds to one position in the input
+Bayer pattern, which means only one of the three color components is
+supplied by the input.  For the other two, this option says to user zero.
+Without it, \fBpambayer\fP instead interpolates from the adjacent pixels
+that do have that color component.
+.sp
+This option was new in Netpbm 10.49 (December 2009).
+
+
+
+
+
+.UN seealso
+.SH SEE ALSO
+.BR "cameratopam" (1)\c
+\&
+.BR "pam" (5)\c
+\&
+
+.UN history
+.SH HISTORY
+.PP
+\fBpambayer\fP was new in Netpbm 10.30 (October 2005).
+.SH DOCUMENT SOURCE
+This manual page was generated by the Netpbm tool 'makeman' from HTML
+source.  The master documentation is at
+.IP
+.B http://netpbm.sourceforge.net/doc/pambayer.html
+.PP
+\ No newline at end of file