Creating image subsets
I have a series of image tiles covering a large area, and want to batch process them with a rule set I have created.. However, I am also using an NDSM in the rule set, but my NDSM covers the entire project area. In the rule set, I want to add an algorithm which creates a scene subset the size of the current image (i.e. crops the NDSM to the size of the image) instead of having to pre-process the NDSM.
In the "create scene subset" algorithm I thought to create variables for Xmin, Xmax, Ymin, Ymax that are the coordinates of my georeferenced image and will update with each new image in the batch process, but have not found a feature in the "update variable" algorithm which can do this for me. Has anyone dealt with a similar problem before, or may have a solution?
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