KR950007543A - Image Coding Device with Adaptive Preprocessing - Google Patents

Image Coding Device with Adaptive Preprocessing Download PDF

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Publication number
KR950007543A
KR950007543A KR1019930017195A KR930017195A KR950007543A KR 950007543 A KR950007543 A KR 950007543A KR 1019930017195 A KR1019930017195 A KR 1019930017195A KR 930017195 A KR930017195 A KR 930017195A KR 950007543 A KR950007543 A KR 950007543A
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South Korea
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signal
image
input
output
complexity
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KR1019930017195A
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Korean (ko)
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KR960012937B1 (en
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김상호
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배순훈
대우전자 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 적응적 전처리를 행하는 영상 부호화 장치에 관한 것으로, 입력되는 화상 신호의 복잡도를 산출하여 기설정된 임계(threshold)값과 비교한 후 입력화상의 복잡도가 기설정된 임계값보다 더 큰가 또는 같거나 작은가에 대응하는 제1 및 제2신호를 발생하는 화상 복잡도 분석 수단(70)의 출력신호에 응답하여 부호화하는 적응적 전처리 기능을 갖는 영상 부호화 장치에 있어서, 상기 화상 복잡도 분석 수단(70)에서 출력하는 신호가 제1신호인 경우에 현재 프레임내의 공간상으로의 성능을 개선하기 위해 소정만큼 열화시켜 부호화하도록 공간축으로 전처리 하는 공간 필터 수단(26)과; 상기 화상 복잡도 분석 수단(70)에서 출력하는 신호가 제2신호인 경우에 다수 프레임을 통해 시간상으로의 성능을 개선하기 위해 시간축으로 전처리하는 시간 필터 수단(24)과; 상기 화상 복잡도 분석 수단(70)에서 출력하는 신혹 제1신호인 경우에는 상기 입력 화상을 상기 공간 필터 수단(26)의 입력단(22)으로 접속시키며, 출력하는 신호가 제2신호인 경우에는 상기 입력 화상을 상기 시간 필터 수단(24)의 입력단(21)으로 접속시키는 스위칭 수단(10)으로 이루어진다.The present invention relates to an image encoding apparatus that performs adaptive preprocessing, wherein the complexity of an input image signal is calculated and compared with a preset threshold, and the complexity of the input image is greater than or equal to the preset threshold. An image encoding apparatus having an adaptive preprocessing function for encoding in response to an output signal of an image complexity analyzing means 70 that generates first and second signals corresponding to a small value, the image complexity analyzing means 70 outputs the same. A spatial filter means 26 for preprocessing on the spatial axis so as to deteriorate and encode by a predetermined amount in order to improve the performance in space in the current frame when the signal is the first signal; Time filter means (24) for preprocessing on the time axis to improve performance in time through multiple frames when the signal output from the image complexity analysis means (70) is a second signal; The input image is connected to the input terminal 22 of the spatial filter means 26 in the case of the first signal output from the image complexity analyzing means 70, and the input signal is output if the output signal is the second signal. It consists of a switching means 10 for connecting an image to the input end 21 of the time filter means 24.

Description

적응적 전처리 기능을 갖는 영상 부호화 장치Image Coding Device with Adaptive Preprocessing

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

도면은 본 발명에 따른 영상 부호화 장치에 도시한 상세 블럭도.Figure is a detailed block diagram showing a video encoding apparatus according to the present invention.

Claims (1)

입력되는 화상 신호의 복잡도를 산출하여 기설정된 임계(threshold)값과 비교한 후 입력화상의 복잡도가 기설정된 임계값보다 더 큰가 또는 같거나 작은가에 대응하는 제1 및 제2신호를 발생하는 화상 복잡도 분석 수단(70)의 출력신호에 응답하여 부호화하는 적응적 전처리 기능을 갖는 영상 부호화 장치에 있어서, 상기 화상 복잡도 분석 수단(70)에서 출력하는 신호가 제1신호인 경우에 현재 프레임내의 공간상으로의 성능을 개선하기 위해 소정만큼 열화시켜 부호화하도록 공간축으로 전처리 하는 공간 필터 수단(26)과; 상기 화상 복잡도 분석 수단(70)에서 출력하는 신호가 제2신호인 경우에 다수 프레임을 통해 시간상으로의 성능을 개선하기 위해 시간축으로 전처리하는 시간 필터 수단(24)과; 상기 화상 복잡도 분석 수단(70)에서 출력하는 신혹 제1신호인 경우에는 상기 입력 화상을 상기 공간 필터 수단(26)의 입력단(22)으로 접속시키며, 출력하는 신호가 제2신호인 경우에는 상기 입력 화상을 상기 시간 필터 수단(24)의 입력단(21)으로 접속시키는 스위칭 수단(10)을 포함하는 적응적 전처리 기능을 갖는 영상 부호화 장치.The complexity of the input image signal is calculated and compared with a predetermined threshold, and then the image complexity of generating first and second signals corresponding to whether the input image is greater than, equal to, or less than the predetermined threshold. A video encoding apparatus having an adaptive preprocessing function for encoding in response to an output signal of the analyzing means 70, wherein in the case where the signal output from the image complexity analyzing means 70 is the first signal, it is spaced in the current frame. Spatial filter means (26) for preprocessing on the spatial axis to decode and decode by a predetermined amount to improve the performance of the apparatus; Time filter means (24) for preprocessing on the time axis to improve performance in time through multiple frames when the signal output from the image complexity analysis means (70) is a second signal; The input image is connected to the input terminal 22 of the spatial filter means 26 in the case of the first signal output from the image complexity analyzing means 70, and the input signal is output if the output signal is the second signal. And a switching means (10) for connecting an image to an input (21) of said temporal filter means (24). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930017195A 1993-08-31 1993-08-31 Video coding apparatus comprising adaptive pre-processing func KR960012937B1 (en)

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Application Number Priority Date Filing Date Title
KR1019930017195A KR960012937B1 (en) 1993-08-31 1993-08-31 Video coding apparatus comprising adaptive pre-processing func

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Application Number Priority Date Filing Date Title
KR1019930017195A KR960012937B1 (en) 1993-08-31 1993-08-31 Video coding apparatus comprising adaptive pre-processing func

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KR950007543A true KR950007543A (en) 1995-03-21
KR960012937B1 KR960012937B1 (en) 1996-09-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100575116B1 (en) * 1997-08-04 2006-10-19 톰슨 Preprocessing process and devices for motion estimation
KR100741355B1 (en) * 2006-10-02 2007-07-20 인하대학교 산학협력단 A preprocessing method using a perceptual weighting filter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI255138B (en) 2005-03-08 2006-05-11 Novatek Microelectronics Corp Method and apparatus for noise reduction of video signals
KR100950718B1 (en) * 2008-04-03 2010-03-31 주식회사 창해에너지어링 Method and system for controlling encoding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100575116B1 (en) * 1997-08-04 2006-10-19 톰슨 Preprocessing process and devices for motion estimation
KR100741355B1 (en) * 2006-10-02 2007-07-20 인하대학교 산학협력단 A preprocessing method using a perceptual weighting filter

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