Lossless Compression of Grayscale Digital Image Based on Two-Dimensional Differential Prediction Algorithm

Abstract

Rice algorithm, which has been recommended by Consultative Committee for Space Data System (CCSDS) for space telescope image lossless compression, is studied. Due to the similarity, this algorithm is applied on lossless compression of X-ray digital image after improvement and a satisfying compression rate is obtained. Firstly, the algorithm process is presented. Later on, the compression and decompression algorithms are implemented on PE's X-ray machine GECCO2505 and the flat panel detector PAXSCAN2520. Finally, the status of the technology is presented with its performance in X-ray digital image compression and decompression applications.

Keywords

• X-ray digital image
• Lossless compression
• Differential prediction
• Non-destructive testing
• Flat-panel detector.