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.\" RCSid "$Id" |
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.\" RCSid "$Id$" |
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.TH MACBETHCAL 1 1/16/97 RADIANCE |
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.SH NAME |
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macbethcal - compute color compensation based on measured Macbeth chart |
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To compute a calibration for a FunkyThing scanner and check the |
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results: |
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.IP "" .2i |
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ra_tiff -r mbscan.tif mbscan.pic |
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ra_tiff \-r mbscan.tif mbscan.pic |
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.br |
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macbethcal -d debug.pic mbscan.pic FunkyThing.cal |
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macbethcal \-d debug.pic mbscan.pic FunkyThing.cal |
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.br |
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ximage debug.pic |
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.PP |
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To apply this computed calibration to another scanned image: |
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.IP "" .2i |
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ra_tiff -r another.tif | pcomb -f FunkyThing.cal - > another_calib.pic |
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ra_tiff \-r another.tif | pcomb \-f FunkyThing.cal \- > another_calib.pic |
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.PP |
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To compute a calibration file for the BigWhiz film recorder, after |
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taking measurements of a slide made from macbeth_spec.pic: |
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.IP "" .2i |
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macbethcal -c macbeth_spec.xyY BigWhiz.cal |
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macbethcal \-c macbeth_spec.xyY BigWhiz.cal |
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.PP |
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To prepare a picture prior to output on the same film recorder: |
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.IP "" .2i |
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pcomb -f BigWhiz.cal standard.pic > toprint.pic |
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pcomb \-f BigWhiz.cal standard.pic > toprint.pic |
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.PP |
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To use |
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.I pcond(1) |
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to also adjust the image for human response: |
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.IP "" .2i |
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pcond -f BigWhiz.cal -h standard.pic > toprint.pic |
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pcond \-f BigWhiz.cal \-h standard.pic > toprint.pic |
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.SH AUTHOR |
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Greg Ward |
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.br |
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Paul Heckbert supplied code for perspective projective mapping |
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.SH "SEE ALSO" |
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calc(1), pcomb(1), pcond(1), pfilt(1), ximage(1) |
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icalc(1), pcomb(1), pcond(1), pfilt(1), ximage(1) |
