A general compression method for multi-source heterogeneous UAV reconnaissance images
A compression method and unmanned aerial vehicle technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of poor intra-frame correlation, few pixels, and inter-frame correlation, that is, weak time correlation, etc., to achieve Eliminate blocking effects, highly targeted effects
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[0105] Hyperspectral image compression:
[0106] 1. Read in the hyperspectral image pic.bmp, 2320x1296, size 8809KB through the adapting interface, create a mapping and perform format conversion at the same time, output a yuv format file, the size is 4405KB;
[0107] 2. Divide the image into 16x16 blocks;
[0108] 3. Because it is a single frame of image information, only HEVCplanar intra-frame prediction is required for the image;
[0109] 4. Subtract the predicted value from the observed value to obtain a fast image residual, and perform 9 / 7DWT transformation and quantization on the image residual;
[0110] 5. Entropy coding the result in the previous step;
[0111] 6. Perform image quality evaluation, comprehensively use PSNR and SSIM evaluation criteria, PSNR and SSIM values are shown in the figure below;
[0112] 7. The test.264 file is generated by x264 program encoding, the size is 230KB;
[0113] The running result is:
[0114] SSIM value is structural similarity: 0.9627731;
[011...
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