Error Correction Methods for Coded Images Backwardly Compatible with International Standard

为了在不可靠的信道上提高图像和视频的质量，开发了与JPEG2000标准兼容的有效纠错技术。提出的技术包括：(1)利用码流分层结构、数据隐藏技术和前向纠错（FEC）码来纠正JPEG2000编码图像的比特错误的方法；(2)在分组交换网络（如Internet）上有效利用包级FEC、交错和JPEG2000错误恢复工具的JPEG2000编码图像丢包恢复方案。(3)基于码块的JPEG2000编码图像隐藏技术，该技术通过分组交换网络创建由原始图像的多个子采样版本组成的单个JPEG2000码流。所提出的纠错方法显著提高了图像质量，并保持了与JPEG2000标准解码器的向后兼容性。

Efficient error correction techniques to improve the quality of image and video over unreliable channels that compatible with the JPEG2000 standard have been developed. The proposed techniques include (1) a method to correct bit error for JPEG2000 coded images that exploits the codestream layered structure, a data hiding technique, and an FEC (forward error correcting) code, (2) a packet loss recovery scheme for JPEG2000 coded images over a packet switching network, such as the Internet, that efficiently utilize packet-level FEC, interleaving, and the JPEG2000 error resilience tools, and (3) a codeblock-based concealment technique for JPEG2000 coded images over a packet switching network that creates a single JPEG2000 codestream consisting of several subsampled versions of the original image. The proposed error correction methods offer significant improvement of image quality and preserve backward compatibility with the JPEG2000 standard decoder.