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CentOS 7.0 - man page for cameratopam (centos section 0)

Cameratopam User Manual(0)					       Cameratopam User Manual(0)

NAME
       cameratopam - convert raw camera image to PAM

SYNOPSIS
       cameratopam

       [input_file_name]

       [-identify_only]   [-quick_interpolate]	[-half_size]  [-four_color_rgb]  [-document_mode]
       [-balance_auto] [-balance_camera]  [-red_scale=float]  [-blue_scale=float]  [-bright=frac-
       tion] [-no_clip_color] [-rgb] [-use_secondary] [-linear] [-verbose]

       All  options  can be abbreviated to their shortest unique prefix.  You may use two hyphens
       instead of one to designate an option.  You may use either white space or an  equals  sign
       between an option name and its value.

DESCRIPTION
       This program is part of Netpbm(1)

       cameratopam converts from any of dozens of raw camera image formats to PAM.

       Digital	still  cameras	often  can  produce images in a special raw format in addition to
       something more standard such as TIFF or JFIF (JPEG).  Software supplied	with  the  camera
       allows  you  to	manipulate the image using information which is lost when the camera con-
       verts to the common format.  A particular camera model often has a unique raw format.

OPTIONS
       -identify_only
	      Report to Standard Error the format of the input image but don't generate an output
	      image.  Program fails if it cannot recognize the format.

       -verbose
	      Report to Standard Error details of the processing.

       -quick_interpolate
	      Use simple bilinear interpolation for quick results.  The default is to use a slow,
	      high-quality adaptive algorithm.

       -half_size
	      Half-size the output image.  Instead of interpolating, reduce  each  2x2	block  of
	      sensors to one pixel.  Much faster than -quick_interpolate.

       -four_color_rgb
	      Interpolate  RGB	as four colors.  This causes a slight loss of detail, so use this
	      only if you see false 2x2 mesh patterns in blue sky.

       -document_mode
	      Show the raw data as a grayscale image with no interpolation.   This  is	good  for
	      photographing black and white documents.

       -balance_auto
	      Automatic  color	balance.   The default is to use a fixed color balance based on a
	      white card photographed in sunlight.

       -balance_camera
	      Use the color balance specified by the camera.  If cameratopam can't find this,  it
	      prints a warning and reverts to the default.

       -red_scale=float

       -blue_scalefloat
	      Further  adjust the color balance by multiplying the red and blue channels by these
	      values.  Both default to 1.0.

       -bright=float
	      Change the output brightness.  Default is 1.0.

       -no_clip_color
	      By default, cameratoapm clips all colors to prevent pink hues  in  the  highlights.
	      Combine this option with -bright=0.25 to leave the image data completely unclipped.

       -rgb   Write  raw  camera  colors to the output file.  By default, cameratoapm converts to
	      sRGB colorspace.

       -use_secondary
	      For cameras based on the Fuji Super CCD SR, this option causes cameratopam  to  use
	      the  secondary  sensors,	in effect underexposing the image by four stops to reveal
	      detail in the highlights.  cameratopam silently ignores this option for  all  other
	      cameras.

       -linear
	      This  option  causes  cameratopam  to generate a variation on PAM that has 'linear'
	      color samples.  In true PAM, each sample in the image  raster  is  gamma-corrected;
	      i.e.  it is essentially proportional to brightness.  With the linear option, camer-
	      atopam generates an image in which the samples are instead  proportional	to  light
	      intensity.

	      Without  -linear,  the image maxval is 255, so the image contains one byte per sam-
	      ple.  With -linear, the maxval is 65535, so the image contains two bytes	per  sam-
	      ple.

	      Without  -linear, cameratopam uses a 99th percentile white point.  With -linear, it
	      doesn't.	I don't know what that means.

SEE ALSO
       411toppm(1) , pamflip(1) , pam(1) ,

HISTORY
       cameratopam was new in Netpbm 10.28 (June 2005).

       It     was     derived	  from	   the	   program     dcraw	 by	 Dave	   Coffin
       <http://www.cybercom.net/~dcoffin/dcraw/>  ,  by  Bryan	Henderson  in  April 2005.  Bryan
       replaced the part that generates the Netpbm output image and removed the  Adobe	Photoshop
       output  function.   Bryan  changed the command syntax and made other small changes to make
       the program consistent with Netpbm.  He also split the source code into manageable  pieces
       (dcraw has a single 5000 line source file).

netpbm documentation			  12 April 2005 	       Cameratopam User Manual(0)


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All times are GMT -4. The time now is 12:48 AM.

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