Details
| Original language | English |
|---|---|
| Pages (from-to) | 990-1000 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Communications |
| Volume | 29 |
| Issue number | 7 |
| Publication status | Published - Jul 1981 |
Abstract
The application of differential pulse code modulation (DPCM) for broadcast color television signals requires a design which produces no visible impairments under normal viewing conditions. This paper describes a quantizer design which is based on measured visibility thresholds of the various kinds of DPCM impairments such as granular noise, edge busyness, and slope overload. The visibility thresholds are determined by subjective tests based on comparisons of DPCM and PCM encoded pictures. Constructions of quantizers are carried out such that the number of levels is minimized without exceeding the measured visibility thresholds. Besides nonadaptive quantizers, adaptive quantizers are also constructed which are controlled by the signal changes of surrounding picture elements. These investigations show that for component coding of color video signals with two-dimensional prediction, a transmission rate of 31.7 Mbits/s is possible for natural types of test pictures without visible impairments using constant word length coding.
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
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In: IEEE Transactions on Communications, Vol. 29, No. 7, 07.1981, p. 990-1000.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Design of DPCM Quantizers for Video Signals Using Subjective Tests
AU - Pirsch, Peter
PY - 1981/7
Y1 - 1981/7
N2 - The application of differential pulse code modulation (DPCM) for broadcast color television signals requires a design which produces no visible impairments under normal viewing conditions. This paper describes a quantizer design which is based on measured visibility thresholds of the various kinds of DPCM impairments such as granular noise, edge busyness, and slope overload. The visibility thresholds are determined by subjective tests based on comparisons of DPCM and PCM encoded pictures. Constructions of quantizers are carried out such that the number of levels is minimized without exceeding the measured visibility thresholds. Besides nonadaptive quantizers, adaptive quantizers are also constructed which are controlled by the signal changes of surrounding picture elements. These investigations show that for component coding of color video signals with two-dimensional prediction, a transmission rate of 31.7 Mbits/s is possible for natural types of test pictures without visible impairments using constant word length coding.
AB - The application of differential pulse code modulation (DPCM) for broadcast color television signals requires a design which produces no visible impairments under normal viewing conditions. This paper describes a quantizer design which is based on measured visibility thresholds of the various kinds of DPCM impairments such as granular noise, edge busyness, and slope overload. The visibility thresholds are determined by subjective tests based on comparisons of DPCM and PCM encoded pictures. Constructions of quantizers are carried out such that the number of levels is minimized without exceeding the measured visibility thresholds. Besides nonadaptive quantizers, adaptive quantizers are also constructed which are controlled by the signal changes of surrounding picture elements. These investigations show that for component coding of color video signals with two-dimensional prediction, a transmission rate of 31.7 Mbits/s is possible for natural types of test pictures without visible impairments using constant word length coding.
UR - http://www.scopus.com/inward/record.url?scp=0019595863&partnerID=8YFLogxK
U2 - 10.1109/TCOM.1981.1095080
DO - 10.1109/TCOM.1981.1095080
M3 - Article
AN - SCOPUS:0019595863
VL - 29
SP - 990
EP - 1000
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
SN - 0090-6778
IS - 7
ER -