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University of Nebraska–Lincoln

CIR Interpretation Tutorial

Vignetting Problems in Virtual Nebraska

One of the most prominent features in several of these images is a very bright "spot" that is located at or near the image center. This is caused by "vignetting" (vin-yet-ing). Vignetting is the result of having a lens mount on the camera that blocks some of the light from entering the lens around its edge. This causes features away from the image center to appear increasingly darker. Correcting this type of a defect is not easily accomplished. However, we are looking into ways in which we can at least improve the vignetted images that are in Virtual Nebraska.

Example of vignetting problem over Bartley, NE.