Steady automatic matching method for high-resolution satellite image connecting points
A high-resolution, satellite image technology, applied in the field of surveying and mapping science, can solve the problems of many wrong matching points, time-consuming and labor-intensive problems, achieve high matching success rate, reduce workload, and reduce manual workload.
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[0028] A robust automatic matching method for high-resolution satellite image tie points, the flow chart of which is shown in figure 1 As shown, each step is described in detail as follows:
[0029] The first step, data preprocessing for high-resolution satellite image matching 1
[0030] Data preprocessing for high-resolution satellite image matching mainly includes: Wallis filter image enhancement, pyramid image generation, feature point extraction and determination of each image to be matched.
[0031] Specific steps are as follows:
[0032] 1 Wallis filter image enhancement: Using the Wallis transform technology commonly used in the field of image processing, Wallis filter is automatically performed on all images to enhance the characteristics and contrast of the image and reduce the difference in gray level between images.
[0033] 2 Pyramid image generation: use the practical and simple 3×3 pixel averaging method to generate 4-level pyramid images from all images in th...
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