A review on methods for image authentication and visual cryptography in digital image watermarking

The paper covers brief study about some of the latest research trends in digital image watermarking. The sensitive images are the images that generally carries high amount of information or very sensitive information. Since the use of sensitive images for information exchange is increasing, watermarking for these images is growing area of research. Use of Visual Cryptography in Digital Image Watermarking is also a research trend since it provides various benefits while dealing with sensitive images. The sensitive images might be victim of tampering during the transmission. Detection of any kind of tampering which is referred as image authentication is highly required for these images. Here, we have studied about some of the latest tamper detection and recovery approaches as well as some of the watermarking approaches with Visual Cryptography mechanism.