Cross Sections

Image with cross section display turned on

The user can show a cross section profile of an image by pressing the cross-section button at the top right of the image area.

Saving Cross Section Data

By right-clicking on the cross cross section region, the cross section data can be saved to a file in the following formats:

• XML
• CSV
• Binary (See below)
• JSON

Binary Format

The Cross Section binary format is as follows. All numeric values are little-endian format.

• A header consisting of:
  • 1-byte version #
  • 4-byte String ID in ASCII ("OKOS")

• Horizontal Cross-section data:
  • 1-byte id for the Horizontal cross section data (ASCII "H")
  • 4-byte (int32) # of horizontal cross sections. As of this writing it should only be 1.
  • 4-byte (int32) Minimum cross section raw value (e.g., 0)
  • 4-byte (int32) Maximum cross section raw value (e.g. 128 for 8-bit data)
  • 8-byte (double) Minimum cross section value in units (e.g. 0 )
  • 8-byte (double) Range of cross section values in units (e.g. 100)
  • 4-byte (int32) length of the units string (below)
  • n-byte ASCII representation of the cross section value units (e.g. "%FSH")
  • 8-byte (double) of the resolution between samples
  • 4-byte (int32) length of the sample units string (below)
  • n-byte ASCII representation of the sample units string (e.g. "mm")
  • 4-byte (int32) number of cross section samples
  • n-byte (int32) cross section samples. each sample is a 4-byte integer.

• Vertical cross section data:
  • 1-byte id for the Vertical cross section data (ASCII "V")
  • All other entries are identical to the Horizontal cross-section data description above.