| 259 |
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especially for matrix multiplication |
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and complex operations on long input rows. |
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.SH EXAMPLES |
| 262 |
< |
To convert two hyperspectral inputs to RGB color space, |
| 262 |
> |
To convert two hyperspectral pictures to RGB color space, |
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average them together, and write them out as a RADIANCE picture: |
| 264 |
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.IP "" .2i |
| 265 |
< |
rcomb -C RGB -s .5 img1.spc -s .5 img2.spc > avg.hdr |
| 265 |
> |
rcomb -C RGB -s .5 img1.hsr -s .5 -fc img2.hsr > avg.hdr |
| 266 |
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.PP |
| 267 |
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Divide one set of matrix elements by the Euclidean sum of two others: |
| 268 |
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.IP "" .2i |
| 272 |
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Compute the absolute and relative differences between melanopic and photopic values |
| 273 |
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in a spectral image: |
| 274 |
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.IP "" .2i |
| 275 |
< |
rcomb -fa -C MY -e "abs(x):if(x,x,-x)" |
| 275 |
> |
rcomb -C MY -e "abs(x):if(x,x,-x)" |
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-e "co(p)=select(p,abs(ci(1,1)-ci(1,2)),(ci(1,1)-ci(1,2))/ci(1,2))" |
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< |
input_spec.hsr > compare.mtx |
| 277 |
> |
input_spec.hsr -fa > compare.mtx |
| 278 |
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.PP |
| 279 |
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Concatenate a spectral flux coefficient matrix with a spectral sky |
| 280 |
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matrix to compute a set of melanopic lux values: |
