| Autor: |
Myers, K. J., Barrett, H. H., Borgstrom, M. C., Patton, D. D., Seeley, G. W. |
| Zdroj: |
Journal of the Optical Society of America A: Optics, Image Science & Vision; October 1985, Vol. 2 Issue: 10 p1752-1759, 8p |
| Abstrakt: |
Pixel signal-to-noise ratio is one accepted measure of image quality for predicting observer performance in medical imaging. We have found, however, that images with equal pixel signal-to-noise ratio (SNRp) but different correlation properties give quite different observer-performance measures for a simple detection experiment. The SNR at the output of an ideal detector with the ability to prewhiten the noise is also a poor predictor of human performance for disk signals in high-pass noise. We have found constant observer efficiencies for humans relative to the performance of a nonprewhitening detector for this task. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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