그림 2. APD 기법에서의 은닉 절차 Fig. 2. The embedding process of APD
그림 4. y%2=1인 행에서의 예측 픽셀 값 예측 Fig 4. Pixel value prediction at the row with y%2=1
그림 1. D에 대한 히스토그램 Fig. 1. Histogram of sequence D
그림 3. APD기법에서의 추출 절차 Fig. 3. The extraction process of APD
그림 5. 제안기법의 데이터 은닉 절차 Fig. 5. Data embedding process of the proposed algorithm
그림 6. 제안기법에서의 데이터 추출 절차 Fig. 6. Data extraction process of the proposed algorithm
그림 7. 커버 이미지와 스테고 이미지 Fig. 7. Cover images & stego-images
표 1. 제안된 기법에 대한 실험 결과 Table 1. The experimental results of the proposed algorithm
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