Abstract: In this paper, we develop a transmission system, referred to as Dual Stream JPEG (DSJ), that improves the resiliency of JPEG video streams by unifying layered encoding with image scrambling techniques. Whereas layered encoding techniques naturally provide resiliency to isolated loss of low priority image data, scrambling techniques make is possible to distribute burst losses throughout the image. In DSJ, this unification is instantiated by employing the discrete cosine transform (DCT) to convert each 8 $MUL 8 pixel block of an image into frequency domain, partitioning the resultant locks into high-priority DC coefficients and low-priority AC coefficients, and the scrambling the transmission of encoded blocks of AC coefficients. Furthermore, DSJ defines an adaptation layer that implements efficient error detection and recovery by including the sequence number and offset (relative to the beginning of the cell payload) of blocks carried in each cell. We have evaluated the performance of DSJ through extensive simulations. We present and analyze our results.!11
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机译：摘要：在本文中，我们开发了一种传输系统，称为双流JPEG（DSJ），该系统通过使用图像加扰技术统一分层编码来提高JPEG视频流的弹性。分层编码技术自然可以为低优先级图像数据的隔离丢失提供恢复能力，而加扰技术可以将突发丢失分布在整个图像中。在DSJ中，通过采用离散余弦变换（DCT）将图像的每个8 $ MUL 8像素块转换到频域，并将生成的锁划分为高优先级DC系数和低优先级AC系数，实例化此统一形式。扰乱AC系数的编码块的传输。此外，DSJ定义了一个适配层，该适配层通过包括每个单元中承载的块的序列号和偏移量（相对于单元有效载荷的开始）来实现有效的错误检测和恢复。我们已经通过广泛的仿真评估了DSJ的性能。我们展示并分析我们的结果。！11
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