1pfsinimgmagick(1) General Commands Manual pfsinimgmagick(1)
2
6 pfsinimgmagick - Load images or frames using ImageMagick++ library
7
9 pfsinimgmagick (<file> [--linear] [--absolute <max_lum>] [--frames
10 <range>] [--skip-missing]) [<file>...]
11
14 This command can load images or frames in the multitude of image for‐
15 mats supported by the ImageMagick library. This includes but is not
16 limited to: BMP, JPG, PNG, GIF, EPS, TIFF, DPX. See the manual page of
17 ImageMagick for the full list of available formats.
18 pfsinimgmagick reads images or frames from files and writes pfs stream
20 to the Standard Output. The pfs stream is usually piped to another pro‐
21 gram for further processing. To detect the format automatically based
22 on the extension, use pfsin command.
23 The output of pfsinimgmagick is scaled to 0-1 range, unless '--abso‐
25 lute' option is specified. By default, the 'LUMINANCE' tag is set to
26 'DISPLAY' contents. Using the '--linear' switch you can force the
27 inverse sRGB transformation to provide linear data. In this case the
28 'LUMINANCE' tag is set to 'RELATIVE' contents. '--absolute' switch can
29 be used to convert pixels to absolute luminance values.
30 This command handles properly 'alpha' channel (transparency) stored in
32 images.
33 Each file can contain a %d pattern, which is substituted with frame
35 numbers. The pattern has the same syntax as C printf command. For exam‐
36 ple, you can use %04d to make the frame number four digit with proceed‐
37 ings zeros. You can select the frames using the following options (the
38 options must be always given after the file name):
39 --frames <range>
42 Range is given in mathlab / octave format:
43 startframe:step:endframe
45 Frame numbers start with startframe (default 0), are increased
47 by step (default 1) and stop at endframe You can skip one of
48 those values, for example 1:100 for frames 1,2,...,100 and 0:2:
49 for frame 0,2,4,... up to the last file that exists.
50 --skip-missing
53 Skip up to ten frames in a row if corresponding files are miss‐
54 ing. Otherwise the program stops reading sequence at the first
55 file that does not exists. This switch does not apply to the
56 first frame in a sequence. This switch can be useful if there is
57 a rendered animation where some of the frame has not been gener‐
58 ated.
59 --linear, -l
62 Converts pixel values to linear luminance (XYZ), assuming the
63 sRGB color space for the input image. The maximum pixel value
64 (255,255,255) is mapped to Y=1. LUMINANCE tag is set to RELA‐
65 TIVE.
66 --absolute <max_lum>, -a <max_lum>
69 --absolute converts pixel values to an absolute linear luminance
70 (XYZ), that is the color space, in which channel Y contains
71 luminance given in cd/m^2. The sRGB color space is assumed for
72 the input image. The maximum pixel value (255,255,255) is mapped
73 to Y=<max_lum>. <max_lum> is typically set to 80 [cd/m^2] for a
74 CRT monitor. LUMINANCE tag is set to ABSOLUTE. --absolute
75 process images almost the same as --relative, but additionally
76 it scales all pixels by <max_lum>.
77
80 pfsinimgmagick frame%04d.dpx --frames 0:10 | pfsview
81 Read frames from files frame0000.dpx, frame0001.dpx, ...,
83 frame0010.dpx and show them using pfsview.
84
87 pfsinimgmagick can not read frames from the Standard Input.
88 Please report bugs and comments on implementation to the discussion
90 group http://groups.google.com/group/pfstools
91
93 pfsin(1), pfsout(1) ImageMagick(1)
94 pfsinimgmagick(1)