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[37] | 1 | function I=rgb2double(I) |
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| 2 | % RGB2DOUBLE Convert RGB image to double format |
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| 3 | % I=RGB2DOUBLE(I) converts the RGB image J from class 'uint8', |
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| 4 | % 'uint16' or 'double' to class 'double. |
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| 5 | % |
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| 6 | % See RGB2XYZ(). |
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| 7 | |
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| 8 | % AUTORIGHTS |
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| 9 | % Copyright (C) 2006 Andrea Vedaldi |
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| 10 | % |
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| 11 | % This file is part of VLUtil. |
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| 12 | % |
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| 13 | % VLUtil is free software; you can redistribute it and/or modify |
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| 14 | % it under the terms of the GNU General Public License as published by |
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| 15 | % the Free Software Foundation; either version 2, or (at your option) |
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| 16 | % any later version. |
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| 17 | % |
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| 18 | % This program is distributed in the hope that it will be useful, |
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| 19 | % but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 21 | % GNU General Public License for more details. |
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| 22 | % |
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| 23 | % You should have received a copy of the GNU General Public License |
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| 24 | % along with this program; if not, write to the Free Software Foundation, |
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| 25 | % Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 26 | |
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| 27 | switch class(I) |
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| 28 | case 'uint8' |
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| 29 | I = double(I)/(2^8-1) ; |
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| 30 | |
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| 31 | case 'uint16' |
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| 32 | I = double(I)/(2^16-1) ; |
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| 33 | |
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| 34 | case 'double' |
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| 35 | otherwise |
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| 36 | error(['Data type ''', class(I), ''' not supported.']) ; |
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| 37 | end |
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