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Alex Rivera
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I am able to insert JPG image into a PDF document with DCTDecode filter. I think the all parameters should be the same for PNG image too, except the filter which should be FlateDecode . However, when I try to insert PNG with the same parameters, the PNG image is not visible in he PDF document. UPDATE: I came to conclusion that the PDF file should include 1 0 obj << /Type /XObject /Subtype /Image /Width 512 /Height 512 /BitsPerComponent 8 /ColorSpace /DeviceRGB /SMask 9 0 R /Length 134753 /Filter /FlateDecode >> stream PNG_RAW DATA endstream endobj 9 0 obj << /Type /XObject /Subtype /Image /Width 512 /Height 512 /BitsPerComponent 8 /ColorSpace /DeviceGray /Length 12087 /Filter /FlateDecode >> stream ALPHA_PIXELS endstream endobj BUT how can I separate the PNG raw data and the alpha pixels via ImageMagick ? In other words, what ImageMagick command can produce PDF_RAW_DATA and ALPHA_PIXELS for insertion into the pdf file.
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