42 |
|
.TP 10n |
43 |
|
.BR \-u |
44 |
|
Print only unique values in the output, skipping runs of equal pixels. |
45 |
+ |
For reverse conversions, the |
46 |
+ |
.I \-u |
47 |
+ |
option writes uncompressed output rather than the standard run-length RGBE |
48 |
+ |
encoding. |
49 |
|
Specifying |
50 |
|
.I \+u |
51 |
|
turns this option off, which is the default. |
80 |
|
Skip the specified number of bytes on the input header. |
81 |
|
This option is useful for skipping unintelligible headers in |
82 |
|
foreign file formats. |
79 |
– |
(Does not work when reading from standard input.) |
83 |
|
.TP |
84 |
|
.BI \-e \ exposure |
85 |
|
Adjust the exposure by the amount specified. |
183 |
|
converts from a Radiance picture to other values, which is the |
184 |
|
default. |
185 |
|
.TP |
186 |
+ |
.BI \-p " xr yr xg yg xb yb xw yw" |
187 |
+ |
On reverse conversion, RGB input uses the given set of color primaries. |
188 |
+ |
These are written into the output header with the PRIMARIES variable. |
189 |
+ |
.TP |
190 |
+ |
.BR \-pXYZ |
191 |
+ |
On reverse conversion, input is in CIE XYZ coordinates, rather than RGB. |
192 |
+ |
The Y channel is assumed to be in candelas/meter^2. |
193 |
+ |
.TP |
194 |
|
.BI -y \ res |
195 |
|
Set the output y resolution to |
196 |
|
.I res. |
236 |
|
To convert from a 512x400 8-bit greyscale image in bottom to top, |
237 |
|
left to right scanline ordering: |
238 |
|
.IP "" .2i |
239 |
< |
pvalue \-r \-db \-b \-h +y 400 +x 512 input.im > flipped.pic |
239 |
> |
pvalue \-r \-db \-b \-h +y 400 +x 512 input.im > flipped.hdr |
240 |
|
.br |
241 |
< |
pflip \-v flipped.pic > final.pic |
241 |
> |
pflip \-v flipped.hdr > final.hdr |
242 |
|
.SH AUTHOR |
243 |
|
Greg Ward |
244 |
|
.SH BUGS |
245 |
< |
The |
235 |
< |
.I \-r |
236 |
< |
option does not work with the |
237 |
< |
.I \-u |
238 |
< |
option. |
239 |
< |
Also, input pixel locations are ignored during a reverse |
245 |
> |
Input pixel locations are ignored during a reverse |
246 |
|
conversion, so this information is not used in determining |
247 |
|
the scanline ordering or picture size. |
248 |
|
.SH "SEE ALSO" |
249 |
|
getinfo(1), pcompos(1), pfilt(1), pflip(1), |
250 |
< |
protate(1), rpict(1), rtrace(1), rvu(1) |
250 |
> |
protate(1), ra_xyze(1), rpict(1), rtrace(1), rvu(1) |