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Last Post 03 May 2012 06:48 PM by  anon
Overlay ROI files?
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anon



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03 May 2012 06:48 PM
    I'm new to remote sensing and ENVI. I have two images, one a panchromatic aerial photo and one a NAIP image, that I am using to look at changes in treeline/tree density. I have already identified all the ROI's I need in each image. Is there any way to overlay two separate ROI files? I thought it would be an effective way to show any change--to have the ROI's from the earlier image overlaid upon the more recent image. Maybe this is not possible? Thank you in advance for your insight. Kim

    MariM



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    07 May 2012 09:48 AM
    ROIs are tied to the image coordinates of the file. The easiest way to overlay ROIs from one image onto another is to use Reconcile ROI via map which will convert the ROIs of one image to overlay on another image of different dimensions, pixel sizes, or projections.
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