Performance Evaluation of Data Compression Systems Applied to Satellite Imagery

Figure 16

Some reconstructed images compressed by different compression algorithms. The left (original size) and center (cropped to 400 × 400) images show SSIM maps of the compressed images, where color indicates the local SSIM magnitude. The right image (cropped to 128 × 128) shows details of the decompressed image (enhanced by linear contrast-stretch for visualization).

(a) DPCM decompressed image. Compression ratio 2.0, PSNR = 38.58 dB, MSSIM = 0.9852

(b) JPEG-LS (Near 2) decompressed image. Compression ratio 8.21, PSNR = 45.34 dB, MSSIM = 0.9705

(c) CCSDS-IDC Integer (Bpp = 1) decompressed image. Compression ratio 7.99, PSNR = 47.75 dB, MSSIM = 0.9854

(d) JPEG-XR “All, QP = 10” decompressed image. Compression ratio 9.64, PSNR = 51.89 dB, MSSIM = 0.9937