1pfsoutimgmagick(1) General Commands Manual pfsoutimgmagick(1)
2
6 pfsoutimgmagick - Write images or frames using Image Magick library
7
9 pfsoutimgmagick [--linear] [--quality <val>] [--bit-depth] [--frames
10 <range>]) <file> [<file>...]
11
13 This command can write images or frames in the multitude of image for‐
14 mats supported by the ImageMagick library. This includes but is not
15 limited to: BMP, JPG, PNG, GIF, EPS, TIFF, DPX. See the manual page of
16 ImageMagick for the full list of available formats.
17 pfsoutimgmagick reads images or frames in pfs format from the Standard
19 Input and writes them under the specified file name(s).
20 The input of pfsinimgmagick must be within 0-1 range. If LUMINANCE tag
22 set is set to RELATIVE or ABSOLUTE, the linear values will be gamma
23 corrected, assuming sRGB color space. Use --linear switch to disable
24 gamma correction.
25 The images are stored using the bit-depth for which the ImageMagick
27 library was compiled (default is 16 bit). Note that some formats (for
28 example JPEG) do not support encoding more than 8 bits per color chan‐
29 nel. To use higher bit-depths, store images in the PNG format.
30 This command stores 'ALPHA' channel if it is present in the pfs stream.
32 Each file name can contain a %d pattern, which is substituted with
34 frame numbers. The pattern has the same syntax as C printf command. For
35 example, you can use %04d to make the frame number four digit with pro‐
36 ceedings zeros. You can select the frames using the following options
37 (the options must be always given after the file name):
38 --frames <range>
40 Range is given in mathlab / octave format:
41 startframe:step:endframe
43 Frame numbers start with startframe (default 0), are increased
45 by step (default 1) and stop at endframe You can skip one of
46 those values, for example 1:100 for frames 1,2,...,100 and 0:2:
47 for frame 0,2,4,... up to the last file that exists.
48 --srgb, -s
50 Apply the sRGB non-linearity (approximately 2.2 gamma) before
51 writing a file. This can be used instead of using pfsgamma -g
52 2.2 to store the result of some tone-mapping operators. The
53 option will compress contrast to make sure that tone values are
54 properly shown on a display. It should be only used with lin‐
55 earized (not gamma corrected) images that are normalized to the
56 0-1 range.
57 --quality <val>, -q <val>
59 Set JPEG/PNG compression level from 1 to 100. Default 75.
60 --bit-depth <val>, -b <val>
62 Enforce bit-depth (per color channel). The allowed values are
63 from 8 to 32. If not specified, the bit depth from the pfs
64 stream ('BITDEPTH' tag) will be used instead. If the 'BITDEPTH'
65 tag is missing, the ImageMagick default value will be used (usu‐
66 ally 16). The bit depth of actually stored file may be lower of
67 that specified, if the file format does not support higher bit
68 depths.
69
72 pfsin test.jpg | pfsout test.png
73 Convert from one image format to another.
74 pfsin --linear test.jpg | pfsout --srgb test.png
76 The same as above, but apply inverse gamma correction after
77 reading an image (--linear) and then apply gamma correction
78 before writing an image (--srgb).
79
81 pfsoutimgmagick can not write frames to the standard output.
82 Please report bugs and comments on implementation to the discussion
84 group http://groups.google.com/group/pfstools
85
87 pfsout(1) ImageMagick(1)
88 pfsoutimgmagick(1)