PDF color and compression

This group allows you to set color depth of the input file for barcode recognition and color depth and compression of the output files.
Option Description
OCR color depth Enter color depth in bits per pixel (bpp) used for barcode recognition of the input PDF files. For barcode recognition the component creates a raster image from every page of the PDF document. This option specifies the color depth of the generated raster image. The default value is 1 (black and white image). It is reasonable to increase this value in case the original image is colored in such a way that rasterization it to black and white can affect the quality of barcodes.
Split color depth Enter color depth used to save the output PDF document representing the part of the input document. It can have one of the following possible values: 1, 4, 8 or 24 bpp. The default value is 24 bpp.

This option is enabled only when the Split on barcode check box is selected on the General tab.

Note: The color depth for displaying the image in the preview pane of the Setup Zoned Barcodes dialog box is the maximum from the OCR color depth and the Split color depth values.
Split compression type Select compression type of the output PDF document representing the part of the input document.

This option is enabled only when the Split on barcode check box is selected on the General tab.

The Split color depth value determines the list of possible compression types. See Compression types.

When the Split compression type is set by an RRT, the RRT should be replaced with one of the values listed in the RRT values for compression types replacement.

Compression types

Split color depth Supported compression types
1 bpp images
  • CCITT Group3 1D (default)
  • CCITT Group3 2D
  • CCITT Group4
  • LZW
4 bpp images
  • Uncompressed (default)
  • LZW
8 bpp images
  • Uncompressed (default)
  • Lossless JPEG
  • LZW
24 bpp images
  • Uncompressed
  • JPEG YUV 4:4:4 (default)
  • JPEG YUV 4:2:2
  • JPEG YUV 4:1:1
  • LZW

RRT values for compression types replacement

Color depth RRT value
1 bpp images
  • GROUP3 (corresponds to CCITT Group3 1D)
  • GROUP3 2D (corresponds to CCITT Group3 2D)
  • GROUP4 (corresponds to CCITT Group4)
  • LZW
4 bpp images
  • UNCOMPRESSED
  • LZW
8 bpp images
  • UNCOMPRESSED
  • JPEG 400 (corresponds to Lossless JPEG)
  • LZW
24 bpp images
  • UNCOMPRESSED
  • JPEG 444 (corresponds to JPEG YUV 4:4:4)
  • JPEG 422 (corresponds to JPEG YUV 4:2:2)
  • JPEG 411 (corresponds to JPEG YUV 4:1:1)
  • LZW