JP2002010085A - 画像処理方法 - Google Patents
画像処理方法Info
- Publication number
- JP2002010085A JP2002010085A JP2001121252A JP2001121252A JP2002010085A JP 2002010085 A JP2002010085 A JP 2002010085A JP 2001121252 A JP2001121252 A JP 2001121252A JP 2001121252 A JP2001121252 A JP 2001121252A JP 2002010085 A JP2002010085 A JP 2002010085A
- Authority
- JP
- Japan
- Prior art keywords
- image
- transform
- image data
- data
- compression
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 238000003672 processing method Methods 0.000 title claims description 12
- 230000009466 transformation Effects 0.000 claims abstract description 16
- 230000001131 transforming effect Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 abstract description 29
- 230000006835 compression Effects 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 23
- 230000008569 process Effects 0.000 abstract description 13
- 238000013139 quantization Methods 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 13
- 238000012545 processing Methods 0.000 description 12
- 230000006837 decompression Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 102100022005 B-lymphocyte antigen CD20 Human genes 0.000 description 1
- 101000795655 Canis lupus familiaris Thymic stromal cotransporter homolog Proteins 0.000 description 1
- 101000897405 Homo sapiens B-lymphocyte antigen CD20 Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
- H04N1/4105—Bandwidth or redundancy reduction for halftone screened pictures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Facsimile Image Signal Circuits (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Image Processing (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/567200 | 2000-05-08 | ||
| US09/567,200 US6584225B1 (en) | 2000-05-08 | 2000-05-08 | Frequency domain halftoning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002010085A true JP2002010085A (ja) | 2002-01-11 |
| JP2002010085A5 JP2002010085A5 (enExample) | 2005-08-11 |
Family
ID=24266148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001121252A Withdrawn JP2002010085A (ja) | 2000-05-08 | 2001-04-19 | 画像処理方法 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US6584225B1 (enExample) |
| JP (1) | JP2002010085A (enExample) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100452826C (zh) * | 2005-08-30 | 2009-01-14 | 夏普株式会社 | 图像处理方法、图像处理装置、和图像形成装置 |
| US7570824B2 (en) | 2003-07-11 | 2009-08-04 | Sharp Kabushiki Kaisha | Image processing method, image processor, image forming apparatus and memory product |
| US7692817B2 (en) | 2004-06-23 | 2010-04-06 | Sharp Kabushiki Kaisha | Image processing method, image processing apparatus, image forming apparatus, computer program product and computer memory product for carrying out image processing by transforming image data to image data having spatial frequency components |
| US8005305B2 (en) | 2003-06-16 | 2011-08-23 | Oce-Technologies B.V. | Method and apparatus for generating a halftoned image from a compressed image |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1489830B1 (en) * | 2003-06-16 | 2006-11-22 | Océ-Technologies B.V. | Method and apparatus for generating a halftoned image from a compressed image |
| EP2018070A1 (en) * | 2007-07-17 | 2009-01-21 | Thomson Licensing | Method for processing images and the corresponding electronic device |
| KR101619972B1 (ko) * | 2008-10-02 | 2016-05-11 | 한국전자통신연구원 | 이산 여현 변환/이산 정현 변환을 선택적으로 이용하는 부호화/복호화 장치 및 방법 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5121445A (en) * | 1986-07-01 | 1992-06-09 | Konica Corporation | Method and apparatus for reading image |
| US4922273A (en) * | 1987-04-02 | 1990-05-01 | Konica Corporation | Compression method of halftone image data |
| JP3311221B2 (ja) * | 1995-01-10 | 2002-08-05 | キヤノン株式会社 | 画像処理装置及びその方法 |
| KR100501902B1 (ko) * | 1996-09-25 | 2005-10-10 | 주식회사 팬택앤큐리텔 | 영상정보부호화/복호화장치및방법 |
| JP3649537B2 (ja) * | 1996-11-27 | 2005-05-18 | 日本アイ・ビー・エム株式会社 | データハイディング方法及びデータ抽出方法 |
| JP3452115B2 (ja) * | 1997-06-13 | 2003-09-29 | 富士ゼロックス株式会社 | 画像処理装置 |
| KR100281463B1 (ko) * | 1998-03-14 | 2001-02-01 | 전주범 | 물체 기반 부호화 시스템의 보조 정보 부호화 장치 |
| US6064764A (en) * | 1998-03-30 | 2000-05-16 | Seiko Epson Corporation | Fragile watermarks for detecting tampering in images |
| US6421386B1 (en) * | 1999-12-29 | 2002-07-16 | Hyundai Electronics Industries Co., Ltd. | Method for coding digital moving video including gray scale shape information |
-
2000
- 2000-05-08 US US09/567,200 patent/US6584225B1/en not_active Expired - Fee Related
-
2001
- 2001-04-19 JP JP2001121252A patent/JP2002010085A/ja not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8005305B2 (en) | 2003-06-16 | 2011-08-23 | Oce-Technologies B.V. | Method and apparatus for generating a halftoned image from a compressed image |
| US7570824B2 (en) | 2003-07-11 | 2009-08-04 | Sharp Kabushiki Kaisha | Image processing method, image processor, image forming apparatus and memory product |
| US7692817B2 (en) | 2004-06-23 | 2010-04-06 | Sharp Kabushiki Kaisha | Image processing method, image processing apparatus, image forming apparatus, computer program product and computer memory product for carrying out image processing by transforming image data to image data having spatial frequency components |
| CN100452826C (zh) * | 2005-08-30 | 2009-01-14 | 夏普株式会社 | 图像处理方法、图像处理装置、和图像形成装置 |
| US7809205B2 (en) | 2005-08-30 | 2010-10-05 | Sharp Kabushiki Kaisha | Image processing method, image processing apparatus, image forming apparatus and recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| US6584225B1 (en) | 2003-06-24 |
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Legal Events
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