A DIGITAL WATERMARKThis paper discusses the feasibility of coding an "undetectable" digital water mark on a standard 512*512 intensity image with an 8 bit gray scale. The watermark is capable of carrying such information as authentication or authorisation codes, or a legend essential for image ...
A DIGITAL WATERMARK R.G.van Schyndel(*), A.Z.Tirkel(+), C.F.Osborne(*) (*) Department of Physics, Monash University, Clayton, 3168, Australia. (+) Scientific Technology, 21 Walstab St, E. Brighton, 3187, Australia. ABSTRACT This paper discusses the feasibility of coding an "...
aEach day is the bact of a year! 每天是一年的bact![translate] a我家有特产 My family has the special product[translate] aBuckinghan Palace Buckinghan宫殿[translate] aDigital watermarking is a method embedding watermark information 数字式水印是埋置水印信息的方法[translate]...
a digital watermark Authentication using a digital watermarkAuthentication using a digital watermarkdoi:WO2001067375 A1WO
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A digital watermark is a mark or, in many cases, a piece of code embedded into digital data (videos, pictures, or even audio). Digital watermarks, also known as forensic watermarks, can either be perceptible or imperceptible and do not alter the information that that piece of data carries....
A method and apparatus for identifying an object include encoding physical attributes of an object where the encoded information is utilized as at least one element for composing a digital watermark for the object. In another embodiment the physical attributes of the object are utilized as a key ...
A visible digital watermark is applied to output images from a computer program. Various attributes of the watermark are modified from image to image, making the watermark difficult to remove. For example, a watermark indicating "not for commercial use" can be applied to all output images from ...
摘要: Verification of true authorship on the basis of digital watermarks is described. The digital watermark can be provided with the proof of identity id and/or with the hash value h(m) of the document and/or with a time value t.
Digital Image Watermarking Based on Discrete Wavelet Transform frequency coefficients in discrete wavelet transform(DWT) domian,Fist,the,the present progress of digital watermark is briefly introduced;after that,starting ... 丁玮,齐东旭,等 - 《Journal of Computer Science\s&\stechnology》 被引量: 37...