JHV User's Guide

Image Processing

JHV does a number of standard image processing algorithms. The image processing computation may take a long time to complete, depending on the size of the image and the speed of the computer. The image processing algorithms are selected from the menu options, which include color modification, palette edit, filter and contour.


1. Image Menu

The image menu is designed for modifying data range, changing image RGB balance, and setting image brightness.

2. Filter Menu

The Image Transformation (filtering) includes several image-processing algorithms. These features are adapted from the popular `xv' utility.

3. Contour Menu

The Contour selection creates a contour plot for the image. The contour lines are drawn in 3, 5, or 9 levels, which are equally spaced in the range of the data. The following figure is an example of image contour. The left side is the original image, and the right side is the image contour with contour level 5.


NCSA
The National Center for Supercomputing Applications

University of Illinois at Urbana-Champaign

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