JP6352625B2 - 画像データ圧縮回路、画像データ圧縮方法及び撮像装置 - Google Patents
画像データ圧縮回路、画像データ圧縮方法及び撮像装置 Download PDFInfo
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- JP6352625B2 JP6352625B2 JP2013255483A JP2013255483A JP6352625B2 JP 6352625 B2 JP6352625 B2 JP 6352625B2 JP 2013255483 A JP2013255483 A JP 2013255483A JP 2013255483 A JP2013255483 A JP 2013255483A JP 6352625 B2 JP6352625 B2 JP 6352625B2
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- 238000000034 method Methods 0.000 title claims description 64
- 238000013144 data compression Methods 0.000 title claims description 42
- 238000003384 imaging method Methods 0.000 title description 18
- 230000003287 optical effect Effects 0.000 claims description 68
- 238000004364 calculation method Methods 0.000 claims description 59
- 238000012545 processing Methods 0.000 description 30
- 238000006243 chemical reaction Methods 0.000 description 21
- 238000007906 compression Methods 0.000 description 20
- 230000006835 compression Effects 0.000 description 20
- 238000003672 processing method Methods 0.000 description 13
- 230000006837 decompression Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000002441 reversible effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003705 background correction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Studio Devices (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Description
Claims (1)
- 所定ビットの同色の隣接する2画素値を入力し、オプティカルブラックの画素値を参照して、前記所定ビット内で前記2画素値の差分値に応じた値を算出して出力する差分算出ステップと、
前記差分算出ステップで算出した前記差分値に応じた値を、瞬時復号可能な可変長の符号語を用いて符号化する符号化ステップと
を含み、
前記差分算出ステップは、前記所定ビット内で前記2画素値の前記差分値に応じた値を算出する際に、算出結果が前記所定ビットをオーバーフローしないように、前記2画素値の差分値に、加算又は減算する所定の定数値から前記オプティカルブラックの画素値を減じる処理を含むものであることを特徴とする画像データ圧縮方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2013255483A JP6352625B2 (ja) | 2013-12-10 | 2013-12-10 | 画像データ圧縮回路、画像データ圧縮方法及び撮像装置 |
KR1020140051909A KR102199470B1 (ko) | 2013-12-10 | 2014-04-29 | 영상-데이터 압축 회로, 영상-데이터 압축 방법, 및 촬영 장치 |
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JP2013255483A JP6352625B2 (ja) | 2013-12-10 | 2013-12-10 | 画像データ圧縮回路、画像データ圧縮方法及び撮像装置 |
Publications (2)
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JP2015115721A JP2015115721A (ja) | 2015-06-22 |
JP6352625B2 true JP6352625B2 (ja) | 2018-07-04 |
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JP2013255483A Active JP6352625B2 (ja) | 2013-12-10 | 2013-12-10 | 画像データ圧縮回路、画像データ圧縮方法及び撮像装置 |
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JP (1) | JP6352625B2 (ja) |
KR (1) | KR102199470B1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102185668B1 (ko) | 2019-01-30 | 2020-12-02 | 스노우 주식회사 | 이미지 파일의 픽셀 변환을 통한 압축율 향상 방법 및 시스템 |
KR102152346B1 (ko) * | 2019-01-30 | 2020-09-04 | 스노우 주식회사 | 이미지 파일의 블록 간 차이를 통한 압축율 향상 방법 및 시스템 |
KR20210099865A (ko) | 2020-02-05 | 2021-08-13 | 삼성전자주식회사 | 이미지 센서 모듈, 그것의 영상 압축 방법 및 전자 장치 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06178119A (ja) * | 1992-12-10 | 1994-06-24 | N T T Data Tsushin Kk | 画像符号化装置 |
JP2009194760A (ja) | 2008-02-15 | 2009-08-27 | Victor Co Of Japan Ltd | 画像符号化装置、画像復号化装置、画像符号化プログラム及び画像復号化プログラム |
JP5528094B2 (ja) * | 2008-12-24 | 2014-06-25 | 株式会社日立国際電気 | 撮像方法および撮像装置 |
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2013
- 2013-12-10 JP JP2013255483A patent/JP6352625B2/ja active Active
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- 2014-04-29 KR KR1020140051909A patent/KR102199470B1/ko active IP Right Grant
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JP2015115721A (ja) | 2015-06-22 |
KR102199470B1 (ko) | 2021-01-06 |
KR20150067708A (ko) | 2015-06-18 |
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