Geomatica OrthoEngine Automated Mosaicking

I have used Geomatica OrthoEngine Automated Mosaicking for many years.  If the imagery to be mosaicked do not have too much radiometric differences,  Dynamic Mosaicking in Image Analysis Windows of ArcGIS is the way to go. It is the easiest and fastest way. However, ArcGIS does not have good color balancing strategy. When dramatic radiometric differences existing among images, I prefer to use Geomatica OrthoEngine Automated Mosaicking, which has a much better color balancing capability compared to ArcGIS, ENVI, and Erdas Imagine.   I just discovered recently that Geomatica OrthoEngine Automated Mosaicking can have a Water Mask, which is used to exclude pixels from statistics for calculating the color balancing of the image. “Water and clouds are the most common features that are excluded, because they will have detrimental effects on the color balancing of ground pixels. Large water bodies do not usually balance well, which is a general industry issue”.  A detailed tutorial of Geomatica OrthoEngine Automated Mosaicking can be found in the link below:

http://www.pcigeomatics.com/pdf/Automatic_Mosaicking_2013.pdf

Here are the key steps of Geomatica OrthoEngine Automated Mosaicking:

  1. Generate the Water Mask. If you already have the water layer in vector format, you can convert it to raster format.
  2. Create a bitmap layer. Just right click the “New Area” in Table of Content in Geomatica Focus, select “New Bitmap Layer”
  3. Transfer water layer to Bitmap Layer.  Focus ->File->Utility->Transfer Layers.
  4. Follow the tutorial to create mosaicking image with Water Mask.

Automatic_Mosaicking_PCI_2013

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About Qiusheng Wu

Assistant Professor of Geography at Binghamton University, State University of New York

Posted on June 17, 2014, in GIS/RS, Software, Tutorials and tagged . Bookmark the permalink. Leave a comment.

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