THPDFImageCompressionType

Determines image compression algorithms.

type

   THPDFImageCompressionType = (icFlate, icJpeg, icCCITT31, icCCITT32, icCCITT42);

數值意義

icFlate                Flate compression algorithm.

icJpeg                Jpeg compression algorithm.

icCCITT31                CCITT 3.1 compression algorithm.

icCCITT32                CCITT 3.2 compression algorithm.

icCCITT42                CCITT 4 compression algorithm.

icAutoMono               1-bit 點陣內容的自動單色選擇器。HotPDF 會為小型影像選擇 Flate,中型影像或受 PDF/A 約束的輸出選擇 CCITT Group 4,大型且符合條件的影像選擇 JBIG2