JHV User's Guide

Image Overlay

JHV supports image overlaying for 8-bit raster images. A user can choose an image as the base layer and lay another image over bottom image. If the top image is not transparent, JHV also allows the user to make the image transparent. The user is also allowed to lay multiple images over the base image.


1. Image Overlay Window

To start laying multiple images, you need to set the view option in the JHV window to layer. Clicking a folder with multiple 8-bit raster images brings up the Overlay window. The overlay window looks like,

The left side is the overlay panel for displaying overlay images. The right side is the control panel.

2. Layer options

JHV provides options to choose the base layer and top layer image(s), make transparent images and specify opacity.


NCSA
The National Center for Supercomputing Applications

University of Illinois at Urbana-Champaign

hdfhelp@ncsa.uiuc.edu