A low contrast object was photographed using two GE TN2500 solid state cameras, which had an array size of 244 by 248 pixels. The image coordinates of the ground control points were digitally computed with an estimated standard error of + or - 0.4 pixels. A contour map generated from the two digital images compared favorably with one generated from 35-mm photographs. Correlation tests showed that two-dimensional correlation was significantly more effective than one-dimensional correlation. While the correlation success rate continued to increase with increase in target array size beyond 13 by 13 pixels, the positional accuracy of correlation did not show significant improvement beyond an array size of 5 by 5.
Photogrammetric Engineering and Remote Sensing
- Pub Date:
- January 1986
- Solid State Devices;
- Digital Data;
- Image Correlators;
- Instrumentation and Photography