| 53 |
|
.BR \-o |
| 54 |
|
Print original values, before exposure compensation. |
| 55 |
|
If the input file is in XYZE format, the Y (green) channel |
| 56 |
< |
will correspond to units of candelas/meter^2. |
| 57 |
< |
Otherwise, the RGB values should be in spectral watts/steradian/meter^2. |
| 56 |
> |
will correspond to units of candelas/meter^2, unless |
| 57 |
> |
.I \-O |
| 58 |
> |
is specified, when watts/sr/meter^2 are always reported. |
| 59 |
|
Specifying |
| 60 |
|
.I \+o |
| 61 |
|
uses final exposed values, which is the default. |
| 81 |
|
Skip the specified number of bytes on the input header. |
| 82 |
|
This option is useful for skipping unintelligible headers in |
| 83 |
|
foreign file formats. |
| 83 |
– |
(Does not work when reading from standard input.) |
| 84 |
|
.TP |
| 85 |
|
.BI \-e \ exposure |
| 86 |
|
Adjust the exposure by the amount specified. |
| 240 |
|
pvalue \-r \-db \-b \-h +y 400 +x 512 input.im > flipped.hdr |
| 241 |
|
.br |
| 242 |
|
pflip \-v flipped.hdr > final.hdr |
| 243 |
+ |
.SH NOTES |
| 244 |
+ |
Hyperspectral Radiance pictures (.hsr files) are |
| 245 |
+ |
converted to approximate RGB. |
| 246 |
+ |
However, the colors may not be very accurate. |
| 247 |
+ |
Use |
| 248 |
+ |
.I rcomb(1) |
| 249 |
+ |
for conversion if greater color fidelity is required. |
| 250 |
|
.SH AUTHOR |
| 251 |
|
Greg Ward |
| 252 |
|
.SH BUGS |
| 253 |
< |
The |
| 247 |
< |
.I \-r |
| 248 |
< |
option does not work with the |
| 249 |
< |
.I \-u |
| 250 |
< |
option. |
| 251 |
< |
Also, input pixel locations are ignored during a reverse |
| 253 |
> |
Input pixel locations are ignored during a reverse |
| 254 |
|
conversion, so this information is not used in determining |
| 255 |
|
the scanline ordering or picture size. |
| 256 |
|
.SH "SEE ALSO" |
| 257 |
|
getinfo(1), pcompos(1), pfilt(1), pflip(1), |
| 258 |
< |
protate(1), ra_xyze(1), rpict(1), rtrace(1), rvu(1) |
| 258 |
> |
protate(1), ra_xyze(1), rcomb(1), rpict(1), rtrace(1), rvu(1) |
