Strange triangles occur when rectifying raster

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12-30-2012 06:16 PM
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Hi all,

I came across this problem some time ago, but decided I need a solution now as I am rectifying some raster files to extract and quantify some values.

As I was rectifying the raster (created from some png / jpg files, and converted to grid / img / tif in ArcMap), I noticed that some strange triangles started appearing in the raster. This tends to happen when there are bigger RMS error in the rectification process, but I can't help wondering if these artefacts will end up in the rectified image - thereby affecting the subsequent data extraction and quantification process.

Appreciate any advice on this.

Happy New Year in advance! 🙂

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