Effect of Embedding Watermark on Compression of the Digital Images

TL;DR

This paper investigates how embedding watermarks in images affects their compression, aiming to enhance security and robustness during internet transmission despite potential size increases.

Contribution

It analyzes the impact of watermark embedding on image compression effectiveness and robustness against attacks in network transmission scenarios.

Findings

Watermark embedding increases uncompressed image size.

Compression transforms can still effectively reduce image size.

Watermarked images maintain robustness against certain attacks.

Abstract

Image Compression plays a very important role in image processing especially when we are to send the image on the internet. The threat to the information on the internet increases and image is no exception. Generally the image is sent on the internet as the compressed image to optimally use the bandwidth of the network. But as we are on the network, at any intermediate level the image can be changed intentionally or unintentionally. To make sure that the correct image is being delivered at the other end we embed the water mark to the image. The watermarked image is then compressed and sent on the network. When the image is decompressed at the other end we can extract the watermark and make sure that the image is the same that was sent by the other end. Though watermarking the image increases the size of the uncompressed image but that has to done to achieve the high degree of robustness i.e. how an image sustains the attacks on it. The present paper is an attempt to make transmission of the images secure from the intermediate attacks by applying the generally used compression transforms.