Implementation of Quantization based Image Watermarking

Stealing of images happens rampantly in this world of internet, wherein the image creator always stands to lose. To try and curb this loss of intellectual property of, there are many schools of thought as to how and what methodology to adopt when watermarking an image. Here in this paper we propose the DWT method with absolute angle quantization index modulation (AAQIM) combined with an invisible watermark. This is quantization based watermarking.