| 摘要 |
The present invention defines a quantitative measure for expressing the spatial (geometric) accuracy of a single optical geo-referenced image. Further, a quality control (QC) method for assessing that measure is developed. The assessment is done on individual images (not stereo models), namely, an image of interest is compared with automatically selected image from a geo-referenced image database of known spatial accuracy. The selection is based on the developed selection criterion entitled “generalized proximity criterion” (GPC). The assessment is done by computation of spatial dissimilarity between N pairs of line-of-sight rays emanating from conjugate pixels on the two images. This innovation is sought to be employed in any optical system (stills, video, push-broom, etc), but its primary application is aimed at validating photogrammetric triangulation blocks that are based on small (<10 MPixels) and medium (<50 MPixels) collection systems of narrow and dynamic field of view together with certifying the respective collection systems. |
