A new method for color image authentication and recovery is proposed in this paper. To achieve this goal, the least significant bit (LSB) and the second LSB of the spatial domain were selected to embed the watermark. The watermark consists of two parts: authentication data and recovery data made by block truncation code and bitmap. According to the experimental results, the image embedded within the authentication data and recovery data can still preserve high image quality. The results also reveal that the tampered images can be successfully recovered with acceptable visual quality.
Huang, Shu-Chien and Jiang, Ching-Fen
"A COLOR IMAGE AUTHENTICATION AND RECOVERY METHOD USING BLOCK TRUNCATION CODE EMBEDDING,"
Journal of Marine Science and Technology: Vol. 20:
1, Article 6.
Available at: https://jmstt.ntou.edu.tw/journal/vol20/iss1/6