FreeBSD Manual Pages
pfsin(1) General Commands Manual pfsin(1) NAME pfsin - Read an image in one of the several formats and write pfs stream to the standard output SYNOPSIS pfsin <file> [<file>...] DESCRIPTION This command can be used to read high- or low- dynamic range image in several recognized formats and output pfs stream on standard output. The pfs stream is usually piped to another program for further process- ing (see examples). To get a list of recognized formats and extensions, execute: pfsin --help This command is a front-end for pfsin* programs for reading images: pf- sinrgbe, pfsinexr, etc. Based on the file extension, appropriate pro- gram is executed. If two different file format are given as parameters, two different program for loading images are executed. Additional op- tions starting with dash '-' can be passed to pfsin* programs. The fol- lowing rules apply for passing the options: the options given before any image file name (or %d pattern) are passed to all pfsin* programs. Options given after image file name are only passed to the program exe- cuted for that file(s). Note also that all option that take an argument (except --frames) must given in the form --option=value, that is with- out a space between an option and its argument. OPTIONS The following options are shared by most pfsin* commands, although some may not accept --absolute and may ignore --linear. --frames <range> Range is given in mathlab / octave format: startframe:step:endframe Frame numbers start with startframe (default 0), are increased by step (default 1) and stop at endframe You can skip one of those values, for example 1:100 for frames 1,2,...,100 and 0:2: for frames 0,2,4,... up to the last file that exists. --skip-missing Skip up to ten frames in a row if corresponding files are miss- ing. Otherwise the program stops reading sequence at the first file that does not exists. This switch does not apply to the first frame in a sequence. This switch can be useful if there is a rendered animation where some of the frame has not been gener- ated. --linear, -l Converts pixel values to linear luminance (XYZ), assuming the sRGB color space for the input image. The maximum pixel value (255,255,255) is mapped to Y=1. LUMINANCE tag is set to RELA- TIVE. --absolute <max_lum>, -a <max_lum> --absolute converts pixel values to an absolute linear luminance (XYZ), that is the color space, in which channel Y contains lu- minance given in cd/m^2. The sRGB color space is assumed for the input image. The maximum pixel value (255,255,255) is mapped to Y=_max_lum_. _max_lum_ is typically set to 80 [cd/m^2] for a CRT monitor. LUMINANCE tag is set to ABSOLUTE. --absolute process images almost the same as --relative, but additionally it scales all pixels by _max_lum_. EXAMPLES pfsin memorial.pic | pfsview See a hdr image in Radiance format (RGBE). pfsin memorial.pic | pfstmo_drago03 | pfsout memorial.jpeg Tone map a hdr image and save it as JPEG. SEE ALSO pfsout(1) pfsinppm(1) BUGS For LDR formats - JPEG, PNG, PNM: If pfstools are compiled without Im- ageMagic support, this command currently will not handle multiple frames given with a %d pattern. Please report bugs and comments on implementation to the discussion group http://groups.google.com/group/pfstools pfsin(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | SEE ALSO | BUGS
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=pfsin&sektion=1&manpath=FreeBSD+13.0-RELEASE+and+Ports>