직교성분을 갖는 CAT 규칙을 이용한 컬러영상에 디지털 워터마킹 기술

• 영문명: Digital Watermarking Technology for Color Images Using CAT Rules with Orthogonal Components
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 유창환(Chang-Hwan Yu) 남태희(Tae-Hee Nam)
• 간행물 정보: 『산업기술연구논문지』산업기술연구논문지 제26권 2호, 39~47쪽, 전체 9쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2021.06.30

영문 초록

In this paper, we propose a digital watermarking technology for color images using 2D CAT (Two-Dimensional Cellular Automata Transform) method to prevent image theft and forgery occurring in the process of using color image contents in advance and to protect the author. The proposed method first converts the RGB color region to the YCbCr region. In addition, in order to insert watermark information in the low frequency region, a basis function is generated using the state transition matrix and gateway values for the 2D CAT rule with orthogonal properties. The Y spatial image of the region converted to YCbCr using the generated basis function is divided into low-frequency and high-frequency regions for each group. Watermark information is inserted in the divided low frequency area. After comparing the visual identity with the original image to the image containing watermark information, the PSNR and the normalized correlation coefficient were compared and analyzed. As a result, it was confirmed that there was no difference in the image containing more than 98% watermark information from the original image.

목차

Ⅰ. 서 론

Ⅱ. CAT 원리 및 적용방법

Ⅲ. 제안 방법

Ⅳ. 안정성 분석과 실험 결과

Ⅴ. 결 론

키워드

CAT 변환 신호 대 잡음비율 직교성분 워터마킹 휘도(Y)와 색차 신호(B-Y, R-Y), R·G·B 신호를 디지털화하는 데 사용되는 색 해상도 케이트웨이 값 Cellular Automata Transform PSNR(Peak Signal to Noise Ratio) Orthogonal Components Watermarking YCbCr Gateway Value