| 9 |
|
][ |
| 10 |
|
.B "\-e exposure" |
| 11 |
|
][ |
| 12 |
+ |
.B \-o |
| 13 |
+ |
][ |
| 14 |
|
.B \-c |
| 15 |
|
| |
| 16 |
|
.B \-u |
| 31 |
|
.I \-e |
| 32 |
|
option specifies an exposure compensation, which may be given as |
| 33 |
|
a decimal multiplier or in f-stops (powers of two). |
| 34 |
+ |
The |
| 35 |
+ |
.I \-o |
| 36 |
+ |
option may be used to specify original units, to which the exposure |
| 37 |
+ |
compensation is applied. |
| 38 |
+ |
Otherwise, the multiplier is in addition to any previous exposure adjustment. |
| 39 |
|
By default, |
| 40 |
|
.I ra_xyze |
| 41 |
|
produces a flat XYZE RADIANCE picture file from any type of RADIANCE |
| 51 |
|
.I \-r |
| 52 |
|
option causes |
| 53 |
|
.I ra_xyze |
| 54 |
< |
to produce a run-length encoded RGBE file instead. |
| 54 |
> |
to produce a run-length encoded RGBE file instead, unless |
| 55 |
> |
.I \-u |
| 56 |
> |
is given, also, when it will produce a flat RGBE file. |
| 57 |
|
The |
| 58 |
|
.I \-p |
| 59 |
|
option may be used to override the standard RADIANCE RGB primary |
| 64 |
|
plus the white point, in that order. |
| 65 |
|
The new primaries will be recorded in the header of the output file, |
| 66 |
|
so that the original information may be fully recovered later. |
| 67 |
< |
It is not necessary that the input file by in XYZE format. |
| 67 |
> |
It is not necessary that the input file be in XYZE format. |
| 68 |
|
Th |
| 69 |
|
.I \-r |
| 70 |
|
option may therefore be used to convert from one RGB primary |
| 96 |
|
primaries for the chosen output device should be specified with the |
| 97 |
|
.I \-p |
| 98 |
|
option if they are known. |
| 99 |
+ |
.PP |
| 100 |
+ |
Similar to the |
| 101 |
+ |
.I ra_rgbe(1) |
| 102 |
+ |
tool, |
| 103 |
+ |
.I ra_xyze |
| 104 |
+ |
silently converts hyperspectral pictures (.hsr) on input, |
| 105 |
+ |
but does so more accurately (and slowly) than |
| 106 |
+ |
.I ra_rgbe. |
| 107 |
|
.SH EXAMPLES |
| 108 |
|
To convert RGBE output from |
| 109 |
|
.I rpict(1) |
| 110 |
|
into run-length encoded XYZE format: |
| 111 |
|
.IP "" .2i |
| 112 |
< |
rpict [options] scene.oct | ra_xyze -c > scene_xyz.pic |
| 112 |
> |
rpict [options] scene.oct | ra_xyze \-c > scene_xyz.hdr |
| 113 |
|
.PP |
| 114 |
|
To prepare a RADIANCE picture for display on a calibrated NTSC monitor: |
| 115 |
|
.IP "" .2i |
| 116 |
< |
ra_xyze -r -p .670 .330 .210 .710 .140 .080 .333 .333 stand.pic ntsc.pic |
| 116 |
> |
ra_xyze \-r \-p .670 .330 .210 .710 .140 .080 .333 .333 stand.hdr ntsc.hdr |
| 117 |
|
.SH AUTHOR |
| 118 |
|
Greg Ward |
| 119 |
|
.SH BUGS |
| 134 |
|
COLORCORR= lines multiplied together.) |
| 135 |
|
Better still, get the picture before color correction is applied. |
| 136 |
|
.SH "SEE ALSO" |
| 137 |
< |
pfilt(1), ra_rgbe(1), rpict(1) |
| 137 |
> |
pfilt(1), pvalue(1), ra_rgbe(1), rpict(1) |
