KEYWORDS: Computer programming, Image transmission, Video, Video coding, Signal to noise ratio, Forward error correction, Error control coding, Digital imaging, Image compression, Video compression
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 X 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.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.