PlugIn module: Window Leveling.

This module performs window leveling on incoming image data when acquiring with StreamPix. The window leveling algorithm can be either applied on the live incoming sequence or the saved data.

Supported image format is monochrome with a real bit depth of more than 8 bit and up to 16. The module is not compatible with color images.

Window Leveling

Usage:

Image Format: This section describes the source image format. This is actually the image format received from the camera. If the image type is not supported, Unsupported Format is printed out.

Output Leveling: Through this pull down menu, you can select which 8 bits part of the image data is going to be leveled. By default, StreamPix always display the 8 most significant bits of the source image. If the image is saved to an AVI format, as AVI requires 8 bit data type, it will also use those 8 most significant bits.

For example, a 10 bit image can be leveled 3 ways:

  • 8 Most significant bits ( bit 2 to 10, default by StreamPix)
  • 8 Middle significant bits ( bit 1 to 9)
  • 8 Less significant bits ( bit 0 to 7)

StreamPix already performs the MSB leveling for the display, the plugin allows you to select the 2 other possibilities.

Apply To: The window leveling can be applied in 4 different ways:

  • To the display Image only: Output sequence file still contains the original data. Note that for an AVI file, only 8 bit, file format is supported, so an automatic MSB leveling is performed.
  • To the Image Data Only: The display image is not modified, however the leveling is performed for each image data before it is saved to disk ( either in sequence or AVI formats). When saved as a .seq file, the data bit depth is kept to 16 bits, but each pixel intensity is leveled.
  • Display and Image Data: The leveling process is applied to both display and saved data. The result sequence file is still 16 bits.
  • On Plugin Apply: This is the only option to obtain a 8 bit images sequence. This option can be used to post process a 10 bits sequence already recorded and have its window leveled to the 8 bits of your choice. As a new sequence or AVI file is created, you will need to enter a file name, and select the appropriate options. From the plugin pull down menu, select Apply To once you have opened the sequence

File format AVI versus SEQ: Once the plugin is applied to the entire sequence, a sequence file or an AVI file will be created. If the sequence or AVI already exist, it will be overwritten.