  Quality evaluation of image segmentation algorithms are still subject of
debate and research. Currently, there is no generic metric that could be
applied to any algorithm reliably. This article contains an evaluation for the
PSRN (Peak Signal-To-Noise Ratio) as a metric which has been used to evaluate
threshold level selection as well as the number of thresholds in the case of
multi-level segmentation. The results obtained in this study suggest that the
PSNR is not an adequate quality measurement for segmentation algorithms.
