A Comprehensive Accuracy Verification Method Based on the Block Adjustment Results of GF-7 Stereo Images

Real 3D in China construction is oriented to the new positioning and new demand of surveying, mapping and geographic information service for economic and social development and ecological civilization construction in the new era. The GF-7 satellite is China's first sub-meter high-resolution optical transmission stereo surveying and mapping satellite, designed to meet the requirements of 1:10 000 scale surveying and mapping. However, there did not exist a comprehensive method to verify the accuracy of block adjustment results for GF-7 satellite stereo images. In this paper, 46 pairs of GF-7 stereo images distributed in Jiangsu, China, were used to carry out block adjustment with high-precise GCP, and a comprehensive accuracy evaluation method was used to verify the adjustment results. The experimental results show that: the comprehensive accuracy verification method can accurately and efficiently check the accuracy of GF-7 stereo images, provide good data support for subsequent data processing and analysis.