Perceptual watermarks for digital images and video

نویسندگان

  • Raymond B. Wolfgang
  • Christine Podilchuk
  • Edward J. Delp
چکیده

The growth of new imaging technologies has created a need for techniques that can be used for copyright protection of digital images. One approach for copyright protection is to introduce an invisible signal known as a digital watermark in the image. In this paper, we describe digital image watermarking techniques known as perceptually watermarks that are designed to exploit aspects of the human visual system in order to produce a transparent, yet robust watermark.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Embedding image watermarks in dc components

Both watermark structure and embedding strategy affect robustness of image watermarks. Where should watermarks be embedded in discrete cosing transform (DCT) domain in order for the invisible image watermarks to be robust? Though many papers in the literature agree that watermarks should be embedded in perceptually significant components, dc components are explicitly excluded from watermark emb...

متن کامل

Embedding Visible Video Watermarks in the Compressed Domain

Digital visible or invisible watermarks are increasingly in demand for protecting or verifying the original image or video ownership. We propose a novel compressed-domain approach to embedding visible watermarks in MPEG-1 and MPEG-2 video streams. Our algorithms operate on the DCT coefficients which are obtained with minimal parsing of input video. The embedded watermarks adapt to the local vid...

متن کامل

A Method for Copyright Marking

Previously [1], we demonstrated a method for automated search for query-identical images and their differentiation from the query image closest analogs, based on the previously described nonprobabilistic method for hypothesis generation and verification (HyGV-2D) [2-3] applied to analysis of grayscale (or color) histograms. The HyGV method provides the differentiation between original images an...

متن کامل

A method for watermark casting on digital image

Watermark casting on digital images is an important problem since it affects many aspects of the information market. We propose a method for casting digital watermarks on images, and we analyze its effectiveness. The satisfaction of some basic demands in this area is examined, and a method for producing digital watermarks is proposed. Moreover, issues like immunity to subsampling and image-depe...

متن کامل

Review of watermarking and the importance of perceptual modeling

A watermark embeds an imperceptible signal into data such as audio, video and images, for a variety of purposes, including captioning and copyright control. In this paper, we rst outline the desirable characteristics of digital watermarks. Previous work in digital watermarking is then reviewed. Early work identi ed redundant properties of an image (or its encoding) that can be modi ed to encode...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1999