Journal ArticleDOI
Binary-symmetric-channel error effects on PCM color-image transmission
TLDR
It has been found that if the tristimulus values of a color are transmitted over the channel, the effects of channel errors are to desaturate ali colors toward a mid-gray and shift the hue of transmitted colors toward cyan, magenta, or yellow.Abstract:
This paper considers the effects of channel errors on the digital transmission of color images. In the transmission system analyzed, each picture element of a color image is represented by three color components. Two cases are considered: the tristimulus representation and the luminance and chromaticity representation. Each color component is coded with a constant-word-length PCM code and passed through a binary symmetric channel. Channel errors are related to chromaticity and luminance errors in a reconstructed image by the use of color space diagrams. Statistical characteristics of image errors are determined for various color representations. It has been found that if the tristimulus values of a color are transmitted over the channel, the effects of channel errors are to desaturate ali colors toward a mid-gray. For luminance/chromaticity representations, channel errors tend to shift the hue of transmitted colors toward cyan, magenta, or yellow.read more
Citations
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Journal ArticleDOI
Digital Coding of Color Video Signals--A Review
TL;DR: The field of the efficient coding of color television signals is reviewed, pushed primarily by the desire in the television area to find digital coding standards accepted by both broadcasters and carriers and suitable for use with NTSC, PAL and SECAM television systems.
Image Data Compression Overview: Issues and Partial Solutions
TL;DR: This report presents an overview of moving image (video) data compression and shows the depth and breadth of the rapidly growing technology of image data compression.
References
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Book
Probability, random variables and stochastic processes
TL;DR: This chapter discusses the concept of a Random Variable, the meaning of Probability, and the axioms of probability in terms of Markov Chains and Queueing Theory.
Book
Probability, random variables, and stochastic processes
TL;DR: In this paper, the meaning of probability and random variables are discussed, as well as the axioms of probability, and the concept of a random variable and repeated trials are discussed.
Journal ArticleDOI
Design considerations in PCM transmission of low-resolution monochrome still pictures
TL;DR: The effects of the numbers of samples per frame, the number of brightness levels, the scanning pattern, and the channel noise are discussed with a view to the optimal choice of these parameters.
Journal ArticleDOI
On weighted PCM (Corresp.)
I. Young,J. Mott-Smith +1 more
TL;DR: It is pointed out that Bedrosian’s approximate derivation for the transmission error is, in fact, exact under certain assumptions, and the results are applied to two simple cases.
Journal ArticleDOI
The effect of BSC on PCM picture quality
Thomas S. Huang,M. Chikhaoui +1 more
TL;DR: Noise introduced in the received pictures of a PCM system by a binary symmetrical channel is compared with noise introduced by an additive white Gaussian channel to a PAM system and it is found that for high signal-to-noise ratios, the Gaussian noise is more objectionable than the BSC noise, while the reverse is true for low signal- to- noise ratios.