KR960013059A - Binary image decoding device - Google Patents

Binary image decoding device Download PDF

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Publication number
KR960013059A
KR960013059A KR1019940024871A KR19940024871A KR960013059A KR 960013059 A KR960013059 A KR 960013059A KR 1019940024871 A KR1019940024871 A KR 1019940024871A KR 19940024871 A KR19940024871 A KR 19940024871A KR 960013059 A KR960013059 A KR 960013059A
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KR
South Korea
Prior art keywords
binary image
unit
probability
false alarm
image decoding
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Application number
KR1019940024871A
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Korean (ko)
Inventor
황덕동
Original Assignee
배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940024871A priority Critical patent/KR960013059A/en
Publication of KR960013059A publication Critical patent/KR960013059A/en

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Abstract

본 발명은 이진 영상의 양자화 과정에 의해 발생되는 양자화 잡음을 최소화하여 해상도를 높일 수 있는 이진 영상 복호화 장치에 관한 것으로, 양자화된 이진 영상 데이타를 역 양자화하여 원래의 데이타 값으로 크기를 변환하는 역 양자화부, 인코더 측에서 압축을 위해 사용된 DCT 변환에 대한 역변환을 수행하는 IDCT부, 상기 IDCT부(14)에서 출력되는 이진 영상 신호의 확률 분포 곡선을 이용하여 기 설정된 오경보 확률내에서 미스를 최소화하는 기준치에 의해 이진 영상을 판정하는 판정부, 복호화된 이진 영상을 2차원 저역 필터링하는 후처리부(15)를 구비하여 구성함을 특징으로 한다.The present invention relates to a binary image decoding apparatus capable of increasing the resolution by minimizing the quantization noise generated by the quantization process of a binary image. The IDCT unit performs an inverse transform on the DCT transform used for compression at the encoder side, and minimizes a miss within a preset false alarm probability by using a probability distribution curve of a binary image signal output from the IDCT unit 14. And a determination unit for determining a binary image based on a reference value, and a post-processing unit 15 for two-dimensional low pass filtering of the decoded binary image.

Description

이진 영상 복호화 장치Binary image decoding device

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

제2도는 본 발명의 실시예를 나타내는 블럭 구성도.2 is a block diagram showing an embodiment of the present invention.

제3도는 본 발명의 실시예에 적용되는 확률 분포 곡선도.3 is a probability distribution curve diagram applied to an embodiment of the present invention.

Claims (2)

양자화된 이진 영상 데이타를 역 양자화하여 원래의 데이타 값으로 크기를 변환하는 역 양자화부(13), 인코더 측에서 압축을 위해 사용된 DCT 변환에 대한 역변환을 수행하는 IDCT부(14), 상기 IDCT부(14)에서 출력되는 이진 영상 신호의 확률 분포 곡선을 이용하여 기 설정된 오경보 확률내에서 미스를 최소화하는 기준치에 의해 이진 영상을 판정하는 판정부(21), 복호화된 이진 영상을 2차원 저역 필터링하는 후처리부(15)를 구비하여 구성함을 특징으로 하는 이진 영상 복호화 장치.An inverse quantizer 13 for inversely quantizing the quantized binary image data and converting the size into original data values, an IDCT unit 14 for performing an inverse transform on the DCT transform used for compression at the encoder side, and the IDCT unit A determination unit 21 for determining a binary image by a reference value which minimizes a miss within a preset false alarm probability by using a probability distribution curve of the binary image signal output from (14), and performing 2-dimensional low pass filtering on the decoded binary image Binary image decoding apparatus comprising a post-processing unit (15). 제1항에 있어서, 상기 판정부(21)는 기 설정된 오경보 확률내에서 판정 확률을 최대화 하는 니만-피어슨 판정기로 구성함을 특징으로 하는 이진 영상 복호화 장치.The apparatus of claim 1, wherein the determining unit (21) comprises a Niemann-Pearson determiner that maximizes a determination probability within a preset false alarm probability. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940024871A 1994-09-30 1994-09-30 Binary image decoding device KR960013059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940024871A KR960013059A (en) 1994-09-30 1994-09-30 Binary image decoding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940024871A KR960013059A (en) 1994-09-30 1994-09-30 Binary image decoding device

Publications (1)

Publication Number Publication Date
KR960013059A true KR960013059A (en) 1996-04-20

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KR1019940024871A KR960013059A (en) 1994-09-30 1994-09-30 Binary image decoding device

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KR (1) KR960013059A (en)

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