Abstract
In this paper, we have proposed real time copyright protection algorithm using both visible as well as invisible watermarking schemes and also implementation of real time image processing techniques on Android and Embedded Platform. Smartphone camera technology has provided an efficient way for capturing digital images. Unauthorized sharing of data may lead to illegal usage of data for different purposes. Hence watermarking proves to be an efficient way for preventing piracy and illegal misuse of data. We implement watermarking algorithm using frequency domain techniques of DCT on Real Time captured images. We implement watermark embedding as well as extraction algorithm for digital images. Visible watermarking algorithms are developed by keeping the Android image processing tools as the base structure and invisible watermarking is implemented using OpenCV. On using this system, pre-specified copyright information is embedded directly on the pictures when they are taken. User can also neglect embedding watermark by capturing images using default methods like in the usual way. OpenCV provides a better and efficient interface for implementing complex and computationally expensive algorithms. The watermark extraction algorithm is also implemented using frequency domain analysis. For qualitative analysis, we perform various image distortion operations for calculating the efficiency of our algorithm. These techniques were implemented on Beagleboard-xM using the pre-built android image and OpenCV for Android package. So, this system proves to be an efficient approach for protection of images captured from Android device to prevent piracy.