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April 2009
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2009.04.29 07:37 "Re: Libtiff and OpenCV", by Andreas Heindl
Kai-Uwe Behrmann schrieb: > Am 28.04.09, 20:15 +0200 schrieb Andreas H.: >> is an 8-Bit grayscale tif. >> >> andreas@host:$ identify real_604.tif >> real_604.tif TIFF 1392x1024 1392x1024+0+0 PseudoClass 256c 8-bit >> 120.99kb > > PseudoClass 256c seems <-> grayscale tif > You should not miss to set the photometric interpretation > TIFFTAG_PHOTOMETRIC with TIFFSetField to PHOTOMETRIC_MINISBLACK. > > kind regards > Kai-Uwe Behrmann Setting this tag results in an one line only image ... identify real_604_modified.tif real_604_modified.tif TIFF 1392x1 1392x1+0+0 DirectClass 1-bit 174.096kb Is there a way to change the Class to PseudoClass because I noticed that the output image is always identified as DirectClass 1-Bit and should be PseudoClass 256c 8-Bit. Best regards, Andreas