pfsoutjpeghdr(1)pfsoutjpeghdr(1)NAMEpfsoutjpeghdr - Write images or frames in JPEG-HDR format
SYNOPSISpfsoutjpeghdr (<file> [--linear] [--quality <val>] [--correction <cor‐
rect>] [--frames <range>]) [<file>...]
DESCRIPTION
Use this command to write JPEG file with HDR extension. This software
makes use of the High Dynamic Range Imaging Library from Sunnybrook
Technologies Inc. (c) Sunnybrook Inc. 2005
OPTIONS--quality <val>, -q <val>
The --quality setting controls the overall compression/quality
trade-off, with 100 being the maximum setting, producing the
lowest losses and the largest output files. Quality settings
below 70 may result in significant image degradation, and should
be avoided in critical applications. Default: --quality=90
--correction <correct>, -c <correct>
The --correction setting controls the algorithm used during
downsampling of the HDR ratio image data. The default precor‐
rect option compensates for resampling errors by adjusting the
tone-mapped image to maximize the accuracy of the HDR result.
This option may sometimes induce modest halo artifacts in the
tone-mapped image at lower quality settings. If the tone-mapped
(backwards compatible) image is more important than the HDR ver‐
sion, the postcorrect option may be used, instead. To avoid all
artifacts from HDR resampling, specify the fullsamp option. This
will result in slightly larger image files. Default: --correc‐
tion=precorrect
--alpha <a>, -a <a>; --beta <b>, -b <b>
The --alpha and --beta settings control color desaturation dur‐
ing tone-mapping, which will also permits super-saturated colors
to pass through safely. (See the appendix of the paper by Ward
and Simmons cited below for details.) Use --alpha < 1 to desatu‐
rate colors and --beta > 1 to enhance color saturation contrast.
Any input color space will be converted to the standard YCC
color space of JPEG, based on the CCIR-709 (sRGB) primaries.
Default: --alpha=1, --beta=1.
EXAMPLES
pfsin memorial.hdr | pfsoutjpeghdr memorial.jpeg
BUGS
Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-
sb.mpg.de>.
SEE ALSOpfsinjpeghdr(1) Subband Encoding of High Dynamic Range ImagerybyWar‐
dandSimmons (www.anyhere.com/gward/papers/apgv04)
pfsoutjpeghdr(1)