1pfsinrgbe(1) General Commands Manual pfsinrgbe(1)
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6 pfsinrgbe - Load images or frames in Radiance RGBE format
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9 pfsinrgbe [--linear] (<file> [--frames <range>] [--skip-missing])
10 [<file>...]
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14 pfsinrgbe command loads images in Radiance RGBE format and writes pfs
15 stream to the Standard Output. The pfs stream is usually piped to
16 another program for further processing. To detect the format automati‐
17 cally based on the extension, use pfsin command.
18 Since RGBE is an HDR format, 'LUMINANCE' tag is set to 'RELATIVE' (rel‐
20 ative linear luminance values).
21 To read images from standard input use a single dash '-' instead of
23 filename. The images are read until EOF is reached.
24 Each file can contain a %d pattern, which is substituted with frame
26 numbers. The pattern has the same syntax as C printf command. For exam‐
27 ple, you can use %04d to make the frame number four digit with proceed‐
28 ings zeros. You can select the frames using the following options (the
29 options must be always given after the file name):
30 --frames <range>
32 Range is given in mathlab / octave format:
33 startframe:step:endframe
35 Frame numbers start with startframe (default 0), are increased
37 by step (default 1) and stop at endframe You can skip one of
38 those values, for example 1:100 for frames 1,2,...,100 and 0:2:
39 for frame 0,2,4,... up to the last file that exists.
40 --skip-missing
43 Skip up to ten frames in a row if corresponding files are miss‐
44 ing. Otherwise the program stops reading sequence at the first
45 file that does not exists. This switch does not apply to the
46 first frame in a sequence. This switch can be useful if there is
47 a rendered animation where some of the frame has not been gener‐
48 ated.
49 --linear
52 Ignored for compatibility with pfsinppm.
53 --radiance, -r
56 Correct stored values so that the luminance is reported the same
57 in pfsview and radiance tools (xview or Photospheare). See
58 IMPORTANT NOTE below.
59 --quiet, -q
62 Disable warning message about the change in handling absolute
63 values in RGBE files. See IMPORTANT NOTE below.
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67 pfsinrgbe intro%d.hdr frame%d.hdr | ...
68 Concatenate two animations into one and pass it to pipe for fur‐
70 ther processing.
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74 There is an incompatibility between viewers of RGBE format in terms of
75 absolute luminance values. The ximage viewer from Radiance package
76 expects radiance values in RGBE files and multiplies the resulting
77 luminance by the WHITE_EFFICACY constant equal to 179.0f to convert
78 from radiance to luminance.
79 To remain compatible with Radiance (xview and Photospheare), pfstools
81 prior to 1.9.0 divided red, green and blue values by 179 on writing and
82 multiplied by that constant on reading RGBE files. This in turn caused
83 incompatibility with other software, such as Photoshop or HDR toolbox.
84 Starting from pfstools 1.9.0 this division / multiplication step was
85 removed to make pfstools compatible in terms of absolute values with
86 the majority of the software. The downside is that this change made
87 luminance units) with the pfstools 1.9.0 or later. To avoid any mis‐
88 takes because of that change, a long warning messages is shown each
89 time pfsinrgbe or pfsoutrgbe is called. The message can be suppressed
90 with --quiet option.
91 To enable the old functionality and read or write RGBE files with the
93 correction for WHITE_EFFICACY, add --radiance option to the command
94 line.
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98 Please report bugs and comments on implementation to the discussion
99 group http://groups.google.com/group/pfstools
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102 pfsin(1), pfsout(1)
103 pfsinrgbe(1)