KR960036734A - Video encoding device - Google Patents

Video encoding device Download PDF

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Publication number
KR960036734A
KR960036734A KR1019950007316A KR19950007316A KR960036734A KR 960036734 A KR960036734 A KR 960036734A KR 1019950007316 A KR1019950007316 A KR 1019950007316A KR 19950007316 A KR19950007316 A KR 19950007316A KR 960036734 A KR960036734 A KR 960036734A
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South Korea
Prior art keywords
specific object
shape information
memory space
size
rearranging
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KR1019950007316A
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Korean (ko)
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KR0181055B1 (en
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김진헌
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배순훈
대우전자 주식회사
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Priority to KR1019950007316A priority Critical patent/KR0181055B1/en
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    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/194—Segmentation; Edge detection involving foreground-background segmentation
    • 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 특정 물체의 형상 정보만을 따로 검출하여 특정 물체를 구성하는 픽셀들의 픽셀값을 재 배열한후 부호화를 수행함으로서 부호화 효율을 높일 수 있는 영상 부호화 장치에 관한 것으로, 입력되는 영상의 특정 물체 형상 정보의 크기를 검출하는 수단; 상기 특정 물체의 크기에 상당하는 사각 형태의 메모리 공간에 재배열하는 수단; 상기 특정 물체의 각 수평 라인과 메모리 공간의 각 수평 저장 영역을 일대일 대응시켜 특정 물체의 픽셀값을 메모리 공간에 재 배열하되 특정 물체의 각 수평 라인의 시작점이 메모리 공간의 각 수평 저장 영역에서는 수직적으로 일치되게 배열하고 재 배열뒤에 남은 특정 물체의 잔여 픽셀값은 가상 메모리의 잔여 공간에 순차적으로 재 배열하는 수단; 상기 사각 형태로 재배열된 형상 정보를 8×8 블럭단위로 이산 여현변환하는 수단; 상기 이산 여현 변환 수단의 출력을 양자화하되 재배열 수단에 의해 잔여 공간에 재배열된 블럭은 상대적으로 높은 가중치를 부여하여 양자화하는 수단을 구비하여 구성함을 특징으로 한다.The present invention relates to an image encoding apparatus capable of increasing encoding efficiency by separately encoding only shape information of a specific object, rearranging pixel values of pixels constituting the specific object, and performing encoding. Means for detecting the size of the information; Means for rearranging the memory space in a rectangular shape corresponding to the size of the specific object; The pixel values of the specific object are rearranged in the memory space by one-to-one correspondence between each horizontal line of the specific object and each horizontal storage area of the memory space, and the starting point of each horizontal line of the specific object is vertically determined in each horizontal storage area of the memory space. Means for sequentially aligning and rearranging the residual pixel values of the particular object remaining after the rearrangement in the remaining space of the virtual memory; Means for discrete cosine transforming the rearranged shape information in 8 × 8 block units; The output of the discrete cosine transform means is quantized, and the rearranged blocks in the remaining space by the rearrangement means are provided with means for quantizing by giving a relatively high weight.

Description

영상 부호화 장치Video encoding device

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

제1도는 종래 기술을 설명하기 위한 도면, 제2도는 본 발명의 실시예를 나타내는 상세 구성도, 제3도 및 제4도는 본 발명의 실시예를 설명하기 위한 도면.1 is a view for explaining the prior art, Figure 2 is a detailed configuration diagram showing an embodiment of the present invention, Figure 3 and Figure 4 is a view for explaining an embodiment of the present invention.

Claims (5)

입력되는 영상의 특정 물체 형상 정보만을 검출하여 특정 물체의 크기에 상당하는 사각 형태의 메모리 공간에 재배열하는 형상 정보 재배열 수단; 상기 재배열 수단에 의해 사각 형태로 재배열된 특정 물체 형상 정보를 기설정 블럭 단위로 분할하여 이산 여현 변환하는 이산 여현 변환 수단, 상기 이산 여현 변환 수단에 의해 이산 여현 변환된 형상 정보를 양자화하는 양자화 수단을 구비하여 구성함을 특징으로 하는 영상 부호화 장치.Shape information rearranging means for detecting only specific object shape information of an input image and rearranging the specific object shape information in a rectangular memory space corresponding to the size of the specific object; Discrete cosine transforming means for dividing the specific object shape information rearranged in a quadrangular form by the rearrangement means into predetermined block units, and quantization for quantizing discrete cosine transformed shape information by the discrete cosine transforming means; And encoding means. 제1항에 있어서, 상기 형상 정보 재배열 수단은 입력되는 영상 신호를 프레임 단위로 저장하는 프레임 메모리, 특정 물체의 형상 정보와 윤곽선 정보를 검출하는 형상 정보 검출수단, 상기 형상 정보 검출 수단에 의해 검출된 특정 물체의 각 픽셀수를 카운트하여 특정 물체의 크기를 검출하는 크기 검출 수단, 상기 크기 검출 수단에 의해 검출된 특정 물체의 크기에 상당하는 사각 형태의 가상 메모리 공간을 설정하는 가상 메모리 설정 수단, 상기 특정 물체의 크기에 상당하는 사각 형태의 메모리 공간에 특정 물체의 형상 정보를 재배열하는 형상 정보 재배열 수단을 구비하여 구성함을 특징으로 하는 영상 부호화 장치.The apparatus of claim 1, wherein the shape information rearrangement means comprises: a frame memory for storing an input image signal in units of frames, shape information detection means for detecting shape information and contour information of a specific object, and the shape information detection means; A size detecting means for counting the number of pixels of the specific object to detect the size of the specific object, a virtual memory setting means for setting a virtual memory space having a rectangular shape corresponding to the size of the specific object detected by the size detecting means; And shape information rearranging means for rearranging shape information of the specific object in a rectangular memory space corresponding to the size of the specific object. 제2항에 있어서, 상기 형상 정보 검출 수단은 상기 프레임내의 각 픽셀 값을 검출하여 픽셀값이 0인 영역은 배경 영역으로 판정하고 픽셀값이 0이외인 영역은 특정 물체 영역으로 판정함을 특징으로 하는 영상 부호화 장치.The method of claim 2, wherein the shape information detecting means detects each pixel value in the frame, and determines that a region having a pixel value of zero is a background region and a region having a pixel value other than zero is a specific object region. An image encoding device. 제2항 또는 제3항에 있어서, 상기 형상 정보 재배열 수단은 상기 특정 물체의 각 수평 라인과 상기 가상 메모리 공간의 각 수평 저장 영역을 일대일 대응시켜 특정 물체의 픽셀값을 가상 메모리 공간에 재배열하되 특정 물체의 각 수평 라인의 좌측 끝점이 가상 메모리 공간의 각 수평 저장 영역에서는 수직적으로 일치되게 배열하고 재배열뒤에 남은 특정 물체의 잔여 픽셀값들은 가상 메모리의 잔여 공간에 순차적으로 재배열함을 특징으로 하는 영상 부호화 장치.The method according to claim 2 or 3, wherein the shape information rearrangement means rearranges pixel values of the specific object in the virtual memory space by one-to-one correspondence between each horizontal line of the specific object and each horizontal storage area of the virtual memory space. However, the left end of each horizontal line of a specific object is vertically aligned in each horizontal storage area of the virtual memory space, and the remaining pixel values of the specific object remaining after the rearrangement are rearranged sequentially in the remaining space of the virtual memory. An image encoding device. 제4항에 있어서, 상기 양자화 수단은 상기 이산 여현 변환된 형상 정보를 양자화하되 상기 형상 정보 재배열 수단에 의해 잔여 공간에 재배열된 형상 정보는 잔여 공간 이외의 공간에 배열된 형상 정보보다 상대적으로 높은 가중치를 부여하여 양자화함을 특징으로 하는 영상 부호화 장치.5. The method of claim 4, wherein the quantization means quantizes the discrete cosine transformed shape information, wherein the shape information rearranged in the remaining space by the shape information rearrangement means is relatively larger than the shape information arranged in the space other than the remaining space. And a quantization by giving a high weight. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950007316A 1995-03-31 1995-03-31 Image encoding apparatus KR0181055B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970025155A (en) * 1995-10-26 1997-05-30 김주용 Hierarchical Coding Method in Object-Centered Coding
KR100390740B1 (en) * 1995-10-26 2003-11-01 주식회사 팬택앤큐리텔 Method for encoding video signals and encoder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970025155A (en) * 1995-10-26 1997-05-30 김주용 Hierarchical Coding Method in Object-Centered Coding
KR100390740B1 (en) * 1995-10-26 2003-11-01 주식회사 팬택앤큐리텔 Method for encoding video signals and encoder

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