What is Watermarking What is a watermark? Originally a watermark is a more or less transparent image or text that has been applied to a piece of paper, another image to either protect the original image, or to make it harder to copy the item e. What is a digital watermark?
What is Watermarking Before diving into coding first let us understand what is watermarking. As per the wikepidia definition: The definition as per wikipedia is: It is typically used to identify ownership of the copyright of such signal. Though a visible watermark can't prevent unauthorized use, it makes it more difficult for those who may want to claim someone else's photo or art work as their own.
Watermarking can also be achieved using the Java coding techniques. Let us first list down the steps we need to follow to watermark our image.
In our example we will create textual watermark and image watermark. Obtain graphics context of the BufferedImage object.
But basically, the watermark is usually translucent so an alpha channel is needed. Write the output image using the ImageIO. Let us put the above steps in practice. The following code create two images one textually watermarked and a second image watermarked.
Watermarking Example package com. Execute the above code. You would get the following output on console: The tex watermark is added to the image. The image watermark is added to the image.
The piece of code to create textual watermark from the above java code is as below: In this article we saw how to achieve watermarking using Java code in simple and easy steps. Hope you liked the article.A digital watermarking method is said to be of quantization type if the marked signal is obtained by quantization.
Quantization watermarks suffer from low robustness, but have a high information capacity due to rejection of host interference. Aug 07, · Learn the secret of adding a watermark to your handmade paper! Visit vetconnexx.com for projects, paper making kits and books by Arnold Grummer.
image watermarking technique which based on combining two transforms: LWT and DCT. Watermarking is done by Digital Image Watermarking Scheme Based on LWT and DCT complexity etc., for each domain.
The presented paper showed that these algorithms have a . In this paper, the binary image of size 32 × 32, as shown in Fig.
1 (a), is used as original watermark, and all bit color images of size × in the image database CVG-UGR are taken as original carrier images. A Novel Watermarking Scheme for JPEG Images VIKAS SAXENA Dept.
of CSE and IT Jaypee Institute of information Technology University A, Sec, Noida INDIA Therefore in this paper we propose a watermarking technique to hide the watermark data in JPEG images.
A CRYPTOGRAPHICALLY SECURE IMAGE WATERMARKING SCHEME Jian Ren Tongtong Li In this paper, a cryptographic watermark embedding technique based on discrete logarithm is proposed. The applied to image watermarking in spatial domain and spread spectrum domain. III. SPATIAL DOMAIN IMAGE WATERMARKING.