KR100814029B1 - 하프톤 영상에서의 디지털 워터마킹 방법 - Google Patents
하프톤 영상에서의 디지털 워터마킹 방법 Download PDFInfo
- Publication number
- KR100814029B1 KR100814029B1 KR1020060029102A KR20060029102A KR100814029B1 KR 100814029 B1 KR100814029 B1 KR 100814029B1 KR 1020060029102 A KR1020060029102 A KR 1020060029102A KR 20060029102 A KR20060029102 A KR 20060029102A KR 100814029 B1 KR100814029 B1 KR 100814029B1
- Authority
- KR
- South Korea
- Prior art keywords
- watermark
- image
- halftone
- halftone image
- lut
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
- A23N12/02—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for washing or blanching
- A23N12/023—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for washing or blanching for washing potatoes, apples or similarly shaped vegetables or fruit
- A23N12/026—Stone-gatherers or cleaning devices for the washing machines
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23N—MACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
- A23N12/00—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts
- A23N12/08—Machines for cleaning, blanching, drying or roasting fruits or vegetables, e.g. coffee, cocoa, nuts for drying or roasting
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
- A47J43/24—Devices for washing vegetables or the like
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
Abstract
Description
Claims (3)
- 하프톤 영상에서의 디지털 워터마킹 방법에 있어서,비밀키를 이용하여 N개의 랜덤한 위치를 생성한 후 상기의 N개의 랜덤한 위치에 대해 워터마크 데이터를 저장하는 과정을 포함한 워터마크 삽입 과정과,현재 픽셀의 그레이값과 이웃픽셀의 값을 LUT에 입력하여 최종 하프톤 픽셀의 값을 결정하는 하프톤 픽셀값 결정 과정을 포함한 워터마크 삽입 방법을 특징으로 하는 하프톤 영상에서의 디지털 워터마킹 방법.
- 하프톤 영상에서의 디지털 워터마킹 방법에 있어서,스캔된 영상에 대해 회전각도를 검출하는 과정과, 상기의 스캔 영상에 대해 도트크기를 검출하는 과정과, 상기의 스캔 영상에 대한 다운 샘플링 과정을 포함하여 이루어진 하프톤 영상 생성 과정과,상기에서 생성된 하프톤 영상에 대해 자기연관 함수를 이용한 기하학적 변형을 수정하는 과정과, 상기의 하프톤 영상에 대해 프리셋 비트를 탐색하는 과정과, 상기의 하프톤 영상에 대해 N개의 랜덤한 위치의 픽셀값을 읽는 과정을 포함하여 이루어진 하프톤 영상에서의 워터마크 추출 방법을 특징으로 하는 하프톤 영상에서의 디지털 워터마킹 방법.
- 제 2항에 있어서,상기의 회전각도 검출 과정은 하후 변환(Hough Transform) 알고리즘을 이용하여 회전각도를 검출하는 것을 특징으로 하는 하프톤 영상에서의 디지털 워터마킹 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060029102A KR100814029B1 (ko) | 2006-03-30 | 2006-03-30 | 하프톤 영상에서의 디지털 워터마킹 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020060029102A KR100814029B1 (ko) | 2006-03-30 | 2006-03-30 | 하프톤 영상에서의 디지털 워터마킹 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070098002A KR20070098002A (ko) | 2007-10-05 |
KR100814029B1 true KR100814029B1 (ko) | 2008-03-14 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020060029102A KR100814029B1 (ko) | 2006-03-30 | 2006-03-30 | 하프톤 영상에서의 디지털 워터마킹 방법 |
Country Status (1)
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KR (1) | KR100814029B1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101509877B1 (ko) * | 2013-01-21 | 2015-04-07 | 에스케이씨앤씨 주식회사 | 이미지로부터 생성한 워터마크를 이미지에 삽입하는 기법에 의한 워터마킹 방법 및 장치 |
KR101962275B1 (ko) * | 2017-07-06 | 2019-03-26 | 동국대학교 산학협력단 | 동영상 스테가노그래피 데이터의 암호화 및 복호화 방법 |
CN107888926A (zh) * | 2017-11-29 | 2018-04-06 | 云南电网有限责任公司 | 一种强鲁棒视频二值bmp图片水印嵌入及提取方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10208026A (ja) | 1997-01-08 | 1998-08-07 | Internatl Business Mach Corp <Ibm> | 画像検証装置 |
KR20010020695A (ko) * | 1999-03-30 | 2001-03-15 | 미다라이 후지오 | 화상 처리 장치 및 방법, 및 기억 매체 |
KR20030051712A (ko) * | 2000-10-11 | 2003-06-25 | 디지맥 코포레이션 | 하프톤 워터마킹 및 관련 응용들 |
KR20050040523A (ko) * | 2003-10-29 | 2005-05-03 | 이원형 | 디지털 영상 위·변조를 검출하는 워터마킹 기법 |
-
2006
- 2006-03-30 KR KR1020060029102A patent/KR100814029B1/ko active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10208026A (ja) | 1997-01-08 | 1998-08-07 | Internatl Business Mach Corp <Ibm> | 画像検証装置 |
KR19980069987A (ko) * | 1997-01-08 | 1998-10-26 | 포맨 제프리 엘 | 화상 검증용 인비지블 화상 워터마크 |
KR20010020695A (ko) * | 1999-03-30 | 2001-03-15 | 미다라이 후지오 | 화상 처리 장치 및 방법, 및 기억 매체 |
KR20030051712A (ko) * | 2000-10-11 | 2003-06-25 | 디지맥 코포레이션 | 하프톤 워터마킹 및 관련 응용들 |
KR20050040523A (ko) * | 2003-10-29 | 2005-05-03 | 이원형 | 디지털 영상 위·변조를 검출하는 워터마킹 기법 |
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KR20070098002A (ko) | 2007-10-05 |
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