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KR960039988A - Contour encoder - Google Patents

Contour encoder Download PDF

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Publication number
KR960039988A
KR960039988A KR1019950010423A KR19950010423A KR960039988A KR 960039988 A KR960039988 A KR 960039988A KR 1019950010423 A KR1019950010423 A KR 1019950010423A KR 19950010423 A KR19950010423 A KR 19950010423A KR 960039988 A KR960039988 A KR 960039988A
Authority
KR
South Korea
Prior art keywords
spline
ratio
feature point
input image
error
Prior art date
Application number
KR1019950010423A
Other languages
Korean (ko)
Other versions
KR100192780B1 (en
Inventor
윤성욱
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950010423A priority Critical patent/KR100192780B1/en
Publication of KR960039988A publication Critical patent/KR960039988A/en
Application granted granted Critical
Publication of KR100192780B1 publication Critical patent/KR100192780B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Image Analysis (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 적용 비 (B)-스플라인을 이용한 윤곽선 부호기에 관한 것으로, 입력영상을 세그먼테이션하는 세그먼테이션부 (41)와 ; 상기 세그먼트된 영상에서 특징점을 추출하는 특징점 추출부 (42) ; 상기 추출된 특징점 구간들에 소정 차수까지 다각형 근사를 적용하여 비 (B)-스플라인을 구하는 비 (B) -스플라인부 (43) ; 각 특징점 구간별로 상기 적용된 비 (B) -스플라인과 입력영상과의 차를 구해 오차를 산출하고, 각 산출된 오차를 비교하여 최소오차를 갖는 비 (B)-스플라인을 선택하는 오차 산출/비교부 (44) ; 및 상기 오차 산출/비교부 (44)에서 선택된 비 (B)-스플라인을 벡터양자화하여 부호화된 윤곽선 정보를 출력하는 벡터양자화기 (45 ; VQ)로 구성되어 고정된 비 (B)- 스플라인을 적용하는 종래방식에 비해 화질을 개선시킬 수 있다.The present invention relates to a contour encoder using an application ratio (B) -spline, comprising: a segmentation unit 41 for segmenting an input image; A feature point extractor 42 for extracting feature points from the segmented image; A ratio (B) -spline portion (43) for obtaining a ratio (B) -spline by applying a polygonal approximation to the extracted feature point intervals up to a predetermined order; Error calculation / comparison for calculating the difference between the applied ratio (B) -spline and the input image for each feature point section, and selecting the ratio (B) -spline having the minimum error by comparing the calculated errors. (44); And a vector quantizer 45 (VQ) for outputting encoded contour information by vector quantizing the ratio (B) -spline selected by the error calculation / comparison unit 44 to apply a fixed ratio (B) -spline. The image quality can be improved as compared with the conventional method.

Description

윤곽선 부호기Contour encoder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제4도는 본 발명에 따른 적응 비 (B)- 스플라인을 이용한 윤곽선 부호기를 도시한 블럭도이다.4 is a block diagram illustrating a contour encoder using an adaptive ratio (B) -spline according to the present invention.

Claims (1)

입력영상을 세그먼테이션하는 세그먼테이션부 (41)와 : 상기 세그먼트된 영상에서 특징점을 추출하는 특징점 추출부 (42) : 상기 추출된 특징점 구간들에 소정 차수까지 다각형 근사를 적용하여 비 (B) -스풀라인을 구비하는 비 (B)-스플라인부 (43) : 각 특징점 구간별로 상기 적용된 비 (B)-스플라인과 입력영상과의 차를 구해 오차를 산출하고, 각 산출된 오차를 비교하여 최소오차를 갖는 비 (B)- 스플라인을 선택하는 오차 산출 /비교부 (44) : 및 상기 오차 산출/비교부 (44)에서 선택된 비 (B)-스플라인을 벡터양자화하여 부호화된 윤곽선 정보를 출력하는 벡터양자화기 (45 : VQ)로 구성하는 윤곽선 부호기.Segmentation unit 41 for segmenting an input image: Feature point extraction unit 42 for extracting a feature point from the segmented image 42: Non- (B) -spoolline by applying a polygon approximation to a predetermined order to the extracted feature point intervals A ratio (B) -spline unit 43 including: a difference between the applied ratio (B) -spline and the input image for each feature point section, calculates an error, and compares the calculated errors to have a minimum error An error calculation / comparison 44 for selecting a ratio (B) -spline; and a vector quantizer for outputting coded contour information by vector quantizing the ratio (B) -spline selected in the error calculation / comparison 44; Contour encoder consisting of (45: VQ). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950010423A 1995-04-29 1995-04-29 A contour encoder KR100192780B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950010423A KR100192780B1 (en) 1995-04-29 1995-04-29 A contour encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950010423A KR100192780B1 (en) 1995-04-29 1995-04-29 A contour encoder

Publications (2)

Publication Number Publication Date
KR960039988A true KR960039988A (en) 1996-11-25
KR100192780B1 KR100192780B1 (en) 1999-06-15

Family

ID=19413325

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950010423A KR100192780B1 (en) 1995-04-29 1995-04-29 A contour encoder

Country Status (1)

Country Link
KR (1) KR100192780B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101361447B1 (en) * 2006-03-06 2014-02-10 프라운호퍼-게젤샤프트 추르 푀르데룽 데어 안제반텐 포르슝 에 파우 Creation of a linear or planar shape

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101588780B1 (en) * 2014-09-02 2016-01-26 재단법인 실감교류인체감응솔루션연구단 Method, appratus and computer-readable recording medium for detecting boundary of object in depth image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101361447B1 (en) * 2006-03-06 2014-02-10 프라운호퍼-게젤샤프트 추르 푀르데룽 데어 안제반텐 포르슝 에 파우 Creation of a linear or planar shape

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Publication number Publication date
KR100192780B1 (en) 1999-06-15

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