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.SH SYNOPSIS |
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.B ra_tiff |
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[ |
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< |
.B "-z|-L|-l" |
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.B "-z|-L|-l|-f|-w" |
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][ |
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.B -b |
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][ |
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use this option under advisement. |
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The |
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.I \-l |
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< |
option specifies SGILOG24 compressed output, which has slightly |
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option specifies SGILOG24 compressed output, which has |
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less dynamic range than SGILOG, but may be smaller in some cases. |
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< |
(It may also be larger in some cases.)\0 |
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(It is usually larger.)\0 |
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The |
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.I \-f |
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option specifies 32-bit IEEE floating-point/primary output, which |
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is the highest resolution format but results in very large files, since |
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each RGB pixel takes 96 bits (12 bytes) and does not compress well. |
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The |
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.I \-w |
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option specifies 16-bit/primary output, which is understood by |
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some photo editing software, such as Adobe Photoshop. |
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Decompression is automatically determined for TIFF input. |
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.PP |
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The |
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.SH EXAMPLES |
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To convert a Radiance picture to SGILOG-compressed TIFF format: |
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.IP "" .2i |
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< |
ra_tiff -L scene1.pic scene1.tif |
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> |
ra_tiff \-L scene1.pic scene1.tif |
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.PP |
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To later convert this image back into Radiance and display using |
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human visibility tone-mapping: |
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.IP "" .2i |
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< |
ra_tiff -r scene1.tif scene1.pic |
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ra_tiff \-r scene1.tif scene1.pic |
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.br |
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< |
ximage -e human scene1.pic |
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ximage \-e human scene1.pic |
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.SH AUTHOR |
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Greg Ward Larson |
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.br |
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A gamma value other than 2.2 is not properly recorded or understood if |
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recorded in the TIFF file. |
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.SH "SEE ALSO" |
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< |
pfilt(1), ra_bn(1), ra_ppm(1), ra_pr(1), ra_pr24(1), ra_t8(1), |
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> |
pfilt(1), ra_bmp(1), ra_bn(1), ra_ppm(1), ra_pr(1), ra_pr24(1), ra_t8(1), |
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ra_t16(1), ximage(1) |
