KR940008486A - Image Coder with Adaptive Motion Detection - Google Patents

Image Coder with Adaptive Motion Detection Download PDF

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Publication number
KR940008486A
KR940008486A KR1019920016453A KR920016453A KR940008486A KR 940008486 A KR940008486 A KR 940008486A KR 1019920016453 A KR1019920016453 A KR 1019920016453A KR 920016453 A KR920016453 A KR 920016453A KR 940008486 A KR940008486 A KR 940008486A
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South Korea
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signal
compression
compressed video
error
subtracting
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KR1019920016453A
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Korean (ko)
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KR0134505B1 (en
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박학재
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배순훈
대우전자 주식회사
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Priority to KR1019920016453A priority Critical patent/KR0134505B1/en
Priority to JP22373693A priority patent/JPH06217296A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

본 발명은 최적의 압축영상신호를 얻기 위한 것으로서, 현재 원신호를 압축한는 제1압축경로와, 현재 원신호에서 움직임 보상된 이전 신호를 감산한 차이신호를 압축하는 제2압축경로로 각각 압축한 신호중에서, 압축중에 발생되는 오차가 적게 발생되는 경로를 선택함으로써 최적의 압축신호를 얻는다.The present invention is to obtain an optimal compressed video signal, each compressed into a first compression path that compresses the current source signal and a second compression path that compresses the difference signal obtained by subtracting the motion-compensated previous signal from the current source signal. Among the signals, an optimum compressed signal is obtained by selecting a path in which errors occurring during compression are small.

Description

적응적 움직임 검출기능을 가진 영상 부호화기Image Coder with Adaptive Motion Detection

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명의 따른 영상부호화기의 블록도.2 is a block diagram of an image encoder according to the present invention.

Claims (8)

최적의 압축 영상신호를 얻기 위하여, 기설정된 영상처리단위로 분할되어 입력되는 현재 원신호를 변환 부호화하고 양장화하여 제1압축 영상신호를 제공하는 제1압축 수단과, 상기 현재 원신호에서 움직임 보상된 신호를 감산한 차이신호를 변환 부호화하고 양자화하여 제2압축 영상신호를 제공하는 제2압축 수단과; 상기 제1압축수단에 연결되어 압축 과정에서 발생하는 영상신호의 오차를 계산하는 제1오차계산수단과; 상기 제2압축수단에 연결되어 압축 과정에서 발생하는 영상 신호의 오차를 계산하는 제2오차계산수단과; 상기 제1오차계산수단 및 상기 제2오차계산수단에서 출력되는 신호를 비교하여 가장 적은 오차를 가지는 압축된 영상신호를 상기 최적의 압축영상신호로 선택하는 비교수단을 포함하는 상기 적응적 영상부호화장치.First compression means for converting, encoding and sequencing a current original signal divided and input into a predetermined image processing unit to provide a first compressed video signal to obtain an optimal compressed video signal, and motion compensation in the current original signal Second compression means for transform-coding and quantizing the difference signal subtracted from the received signal to provide a second compressed video signal; First error calculation means connected to said first compression means for calculating an error of an image signal generated during a compression process; Second error calculation means connected to said second compression means for calculating an error of an image signal generated during a compression process; The adaptive video encoding apparatus comprising comparing means for comparing the signals output from the first error calculating means and the second error calculating means and selecting a compressed video signal having the least error as the optimal compressed video signal . 제1항에 있어서, 상기 비교수단에 응답하여 상기 제1압축수단의 출력신호와 상기 제2압축 수단의 출력신호를 선택적으로 스위칭하는 스위칭 수단을 더 포함하는 적응적 영상 부호호화 장치.The adaptive video encoding apparatus of claim 1, further comprising switching means for selectively switching an output signal of the first compression means and an output signal of the second compression means in response to the comparing means. 제1항에 있어서, 상기 움직임 보상신호를 제공하기 위하여 바로전에 스위칭 수단을 통하여 출력된 신호와 현재 원신호를 이용하여 움직임을 추적하고 추정된 움직임 만큼 움직임을 보상하는 움직임 추정 및 보상 수단을 더 포함하는 적응적 영상부호화장치.The apparatus of claim 1, further comprising: a motion estimation and compensation means for tracking a motion by using a signal output through a switching means and a current original signal to provide the motion compensation signal, and compensating for the motion by the estimated motion. Adaptive video encoding apparatus. 제1항에 있어서, 상기 제1압축수단은 시간영역의 상기 현재 원신호를 주파수 영역으로 변환계수를 출력하는 제1변환부호화 수단 및 상기 변환계수를 유한한 갯수의 값으로 근사화시키는 양자화 수단을 포함하는 적응적 영상부호화장치.2. The apparatus of claim 1, wherein the first compression means comprises first transform encoding means for outputting a transform coefficient of the current original signal in a time domain and a quantization means for approximating the transform coefficient to a finite number of values. Adaptive video encoding apparatus. 제1항에 있어서, 상기 제2압축수단은 시간영역의 상기 차이신호를 주파수 영역으로 변화시켜 변환계수를 출력하는 제2변환부호화 수단 및 상기 변환계수를 유한한 갯수의 값으로 근사화시키는 양자화 수단을 포함하는 적응적 영상부호화장치.2. The apparatus of claim 1, wherein the second compression means comprises: second transform encoding means for outputting a transform coefficient by changing the difference signal in the time domain and a quantization means for approximating the transform coefficient to a finite number of values. Adaptive video encoding apparatus comprising. 제1항 또는 제4항에 있어서, 상기 제1오차계산수단은; 상기 제1압축수단으로부터 출력되는 제1압축영상신호를 역양자화하는 수단과; 상기 제1변환 부호화 수단으로부터 출력되는 신호에서 상기 제1역양자화 수단으로부터 출력되는 신호를 감산하는 제1감산수단과; 상기 제1감산 수단으로부터 출력된 신호에 절대값을 취하는 수단과; 상기 절대값을 합산하는 수단을 포함하는 적응적 영상부호화 장치.5. The apparatus of claim 1 or 4, wherein the first error calculating means; Means for inverse quantization of a first compressed video signal output from said first compression means; First subtracting means for subtracting a signal output from the first inverse quantization means from a signal output from the first transform encoding means; Means for taking an absolute value on the signal output from the first subtracting means; And means for summing the absolute values. 제1항 또는 제5항에 있어서, 상기 제2오차계산수단은; 상기 제2압축 수단으로부터 출력되는 제2압축영상신호를 역양자화하는 수단과; 상기 제2변환 부호화 수단으로부터 출력되는 신호에서, 상기 제2역양자화 수단에서 출력되는 신호를 감산하는 제2감산 수단과; 상기 제2감산 수단으로부터 출력되는 신호에 절대값을 취하는 수단과; 상기 절대값을 합산하는 수단을 포함하는 적응적 영상부호화 장치.The method of claim 1 or 5, wherein the second error calculating means; Means for inverse quantization of a second compressed video signal output from said second compression means; Second subtracting means for subtracting the signal output from the second inverse quantization means from the signal output from the second transform encoding means; Means for taking an absolute value on the signal output from the second subtracting means; And means for summing the absolute values. 제2항에 있어서, 상기 비교수단은 상기 제1압축영상신호와 상기 제2압축영상신호중 선택된 신호가 어떤 신호인지를 규정하기 위한 신호를 부호화하는 수단을 더 포함하는 적응적 영상부호화장치.3. The apparatus according to claim 2, wherein said comparing means further comprises means for encoding a signal for defining which of the selected signals from the first compressed video signal and the second compressed video signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920016453A 1992-09-09 1992-09-09 Image coder with adaptive motion detection function KR0134505B1 (en)

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KR1019920016453A KR0134505B1 (en) 1992-09-09 1992-09-09 Image coder with adaptive motion detection function
JP22373693A JPH06217296A (en) 1992-09-09 1993-09-08 Image signal coding device based on adaptive intramode/intermode compression

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KR1019920016453A KR0134505B1 (en) 1992-09-09 1992-09-09 Image coder with adaptive motion detection function

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US8189851B2 (en) 2009-03-06 2012-05-29 Emo Labs, Inc. Optically clear diaphragm for an acoustic transducer and method for making same

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