| タイトル | Detection of gratings and small features in speckle imagery |
| 著者（英） | Korwar, V. N.; Pierce, J. R. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|California Inst. of Tech. |
| 発行日 | 1981-01-15 |
| 言語 | eng |
| 内容記述 | The extent of picture degradation of speckle, in particular in synthetic aperture radar pictures, has been investigated in the cases where an observer has to detect (1) a small feature immersed in a darker background, and (2) a square wave grating. In each case, a theoretical model is developed for the observer's detection mechanism, and the probability of correct decision is related to relevant picture parameters such as contrast, looks per pixel, and size. These calculations are verified by psychophysical experiments using computer-simulated pictures. Detectability of gratings as a criterion for characterizing picture quality is shown to be far inferior to feature detectability. |
| NASA分類 | INSTRUMENTATION AND PHOTOGRAPHY |
| レポートNO | 81A21943 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/418062 |
|
