Anti-error code propagation JPEG-LS image lossless/near-lossless compression algorithm hardware realization method

• Main Authors: Sang Hongshi, Zhang Tianxu, Chen Liqun, Zhong Sheng, Li Jun, Yan Luxin
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2016
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The present invention discloses an anti-error code propagation image lossless/near-lossless compression method. The method is characterized in that the two-way parallel operation is carried out on the image sub-blocks to obtain a prediction result in a parallel prediction manner, at each prediction link, the pixels are spaced a pixel clock cycle, so that a parameter index, prediction correction, residual calculation and parameter updating feedback loop can be in the streamline design; under a near-lossless compression mode, each pixel has the enough time to be reconstructed, and a pixel reconstruction value corresponding to the last pixel can be just obtained before the context modeling is carried out on the current pixel; by introducing a method of combining sub-block compression and error detecting and correcting coding, the error code large-area diffusion is prevented, and an anti-channel error code performance is improved, at the same time, the sizes of the sub-blocks and an error detecting and correcting