| タイトル | New uses of shadow enhancement |
| 本文（外部サイト） | http://hdl.handle.net/2060/19740014843 |
| 著者（英） | Sawatzky, D. L.; Lee, K. |
| 著者所属（英） | Colorado School of Mines |
| 発行日 | 1974-03-27 |
| 言語 | eng |
| 内容記述 | The author has identified the following significant results. Shadow enhancement of topographic linears in photographic or scanner images is a valuable tool for interpretation of geologic structures. Whether linears will be enhanced or subdued depends on sun angle and azimuth. The relationship of the sun's attitude to topographic slopes determines which trends are available for interpretation in existing imagery, and it can be used to select the time of day, surface properties, and film and filter characteristics in planning aircraft flights or satellite orbital passes. The technique of selective shadow enhancement can be applied to all photographic or imaging experiments, but its best for snow-covered scenes, side-looking radar images, and painted relief models. |
| NASA分類 | GEOPHYSICS |
| レポートNO | 74N22956
E74-10509
NASA-CR-138232
REPT-74-5 |
| 権利 | No Copyright |
|
