Advanced JPEG 2000 Options dialog box

This dialog box allows you to determine the settings for saving JPEG 2000 files.

Option Description
Offset This group allows setting the offset of the image from the origin of the reference grid.
Horizontal Enter horizontal offset from the origin of the reference grid to the left side of the image area.
Vertical Enter vertical offset from the origin of the reference grid to the top of the image area.
Tile Size This group allows setting the size of a reference tile.
Width enter width of one reference tile, with respect to the reference grid. The default value is 1000000.
Height Enter height of one reference tile, with respect to the reference grid. The default value is 1000000.
Tile Offset This group allows setting the offset of the first tile from the origin of the reference grid
Horizontal Enter horizontal offset from the origin of the reference grid to the left side of the first tile.
Vertical Enter vertical offset from the origin of the reference grid to the top of the first tile.
General Settings This group allows configuring the general image encoding settings.
Use Color Transform Select this check box to convert an RGB image to YUV space before compressing. (YUV space provides greater compression with higher image quality.)
Use Derived Quantization Select this check box to use derived quantization or expounded quantization.
Decompress Level Enter number of resolution levels in the compressed file. The maximum number of levels depends on the size of the image. Passing values that are too large will cause the save operation to fail. Each resolution level is one-half the size of the previous resolution, starting with the full image resolution. The default value is 5.
Guard Bits Enter the number of extra bits to consider when encoding an image. This prevents coding overflow. Possible values are 0 – 7. The default is 2.
Markers This group allows indicating which markers should be used.
Use SOP Marker Select this check box to use the SOP marker.
Use EPH Marker Select this check box to use the EPH marker.
Code Block This group allows you to set the size and options for code blocks.
Width Enter width of the code block, following wavelet transformation. The value must be a power of 2. It must be at least 4 and less than or equal to 1024. The default value is 64.
Height Enter height of the code block, following wavelet transformation. The value must be a power of 2. It must be at least 4 and less than or equal to 1024. The default value is 64.
Code Block Options You may select one or several options from the following list:
  • Selective AC bypass
  • Reset Context On Boundaries
  • Termination On Each Pass
  • Vertically Causal Context
  • Predictable Termination
  • Error Resiliences Symbol
Derived Base This group allows setting a base for derived quantization.
Mantissa Enter the base mantissa used for derived quantization.
Exponent Enter the base exponent used for derived quantization.
Alpha Channel This group allows setting alpha channel information to indicate level of transparency.
Lossless Select this check box to set alpha channel information without loss of transparency.
Active bits Select the number of active bits in alpha channel from the drop-down list.
ROI Options This group allows setting the region of interest (ROI) for the image. When a region of interest is set, the functions modifying pixel values act on the region, rather than the whole image.
Use ROI Select this check box if you are going to use a region of interest.
Control Indicate which region of interest to use. You can select one of the following values:
  • Region — Use the LEAD bitmap region to define the region of interest. In this case you should indicate a region weight in the Weight text box.
  • Rectangle — Use the rectangle with the coordinates specified in the Left, Top, Right, and Bottom boxes.
Default options Click this button to set the default values for all settings.