Application Method of JPEG2000 Wireless Standard
To achieve the reliable transmission of the JPEG2000 compressed images over an error-prone wireless channel, JPEG2000 part 11 namely JPEG2000 wireless (JPWL) defines a frame for error protection and correction. After introducing the JPWL standard, the application method of JPWL is proposed. According to the error sensitivity information of the codestream provided by Error Sensitivity Descriptor, the Error Protection Block is applied to perform header protection and then to perform unequal error protection for the codestream. In process of decoding, the error concealment technology is used based on the residual errors information provided by Residual Errors Descriptor. Experimental results show that, compared with the traditional method, the proposed method gives more protections of the important parts of codestream. It can not only effectively correct transmission errors, but also significantly improve the ability of decoding and the quality of the decoded images.