Standard Image Comments

The following comments are added automatically by TSIPP:

• TSIPP_VERSION - The TSIPP version number.
• TSIPP_IMAGE - Data describing the image in the form of a Tcl list. The list consists of the following elements:
  • The rendering mode: FLAT, GOURAUD, PHONG or LINE. UNKNOWN24 is used for 24 bit images were the rendering mode is unknown.
  • The oversampling factor used to render the image.
  • BOTH, ODD or EVEN, indicates which scanlines are included in the image.
  • The background color, in the standard TSIPP format.
  • The line color, in the standard TSIPP format. This useful only if LINE mode is specified.
• HISTORY - A variable containing the command line that was used to render the image. This is a standard RLE comment, all image filters add their command lines to the comment, so it serves as a history of how the image was processed.

The following comments are standard to the Utah Raster Toolkit. They are not added by TSIPP, but it is suggested that you use them.

• image_gamma - The image gamma. I have found that a value of 0.4 produces getx11 displays that are similar to the default photo image displays.
• image_title - A title for the image.