Predictor Adaptive Differential Pulse Code Modulation (DPCM)

Hiroshi Yasuda; Hisashi Kawanishi

doi:10.1117/12.956685

7 December 1978 Predictor Adaptive Differential Pulse Code Modulation (DPCM)

Hiroshi Yasuda, Hisashi Kawanishi

Proceedings Volume 0149, Digital Image Processing II; (1978) https://doi.org/10.1117/12.956685
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

Many ideas have recently been proposed on the Adaptive DPCM (ADPCM) scheme. The most promising of these is a scheme of adaptively changing prediction function. The authors have studied the prediction function characteristics of television (TV) signals and developed a new Adaptive DPCM algorithm called Predictor Adaptive DPCM, which is based on the spatial correlation characteristics of the prediction function. In our algorithm, the prediction function at the coding sample position is decided by calculating and comparing prediction errors given by various prediction functions at the neighboring, already coded, sample position (called the reference sample position). This algorithm achieves 40%-16% reduction of the transmission bit rate compared to conventional DPCM schemes. This paper describes the spatial correlation characteristics of the prediction function, an algorithm for adaptively changing prediction functions, selection of the optimum reference sample position and selection of the optimum prediction function combination. Computer simulation results of the new algorithm using the moving videotelephone signals, and comparisons between our algorithm and conventional DPCM schemes are also described.

Citation Download Citation

Hiroshi Yasuda and Hisashi Kawanishi "Predictor Adaptive Differential Pulse Code Modulation (DPCM)", Proc. SPIE 0149, Digital Image Processing II, (7 December 1978); https://doi.org/10.1117/12.956685

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

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.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available