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T O P I C R E V I E W
JanN	Posted - Oct 16 2012 : 02:41:33 Hi, I have several JPEGs which have to be merged into one compressed black/white TIFF file. Unfortunately I cannot make it work with at least one file. First try produced uncompressed file: Tiff.IO.LoadFromBuffer(@ImageData[1], Length(ImageData), ioJPEG); Tiff.IO.Params.TIFF_Compression := TIOTIFFCompression.ioTIFF_G4FAX; Tiff.IO.SaveToFileTIFF(ImageFile); Second try produces smaller but corrupt file (page looks strange): Tiff.IO.LoadFromBuffer(@ImageData[1], Length(ImageData), ioJPEG); Tiff.IO.Params.TIFF_Compression := TIOTIFFCompression.ioTIFF_G4FAX; Tiff.IO.Params.BitsPerSample := 1; Tiff.IO.Params.SamplesPerPixel := 1; Tiff.IO.SaveToFileTIFF(ImageFile); Any thoughts? Regards, Jan
2 L A T E S T R E P L I E S (Newest First)
JanN	Posted - Oct 17 2012 : 13:06:03 Thank you very much. Option no. 1 did the job. :)
fab	Posted - Oct 17 2012 : 11:22:35 Hi, you have to specify the pixel format (black/white). You have two options: 1) set TIFF_PhotometInterpret (photometric interpretation): Tiff.IO.Params.TIFF_PhotometInterpret := ioTIFF_BLACKISZERO; 2) convert your image to black/white (there are other options to convert to B/W, for example, dithering, threshold, etc..): Tiff.IEBitmap.PixelFormat := ie1g;