Search All Study Materials Here

Loading Search...
+ Reply to Thread
Results 1 to 1 of 1
  1. #1
    FaaDoO-Administrator FaaDoO-Engineer's Avatar
    Join Date
    Oct 2010
    Posts
    1,191
    Post Thanks / Like
    Blog Entries
    3
    LIKE
    272
    Thanked 2,799 Times in 365 Posts
    Dis-LIKE
    28
    Dis-LIKED 27 Times in 62 Posts

    Pdf 32 Paper Presentation: Digital Watermarking, A sophisticated modern incarnation of steganography

    ABSTRACT: A robust, computationally efficient and blind digital image watermarking in spatial domain has been discussed in this paper. Embedded watermark is meaningful and recognizable and recovery process needs only one secret image. Watermark insertion process exploits average brightness of the homogeneity regions of the cover image. Spatial mask of suitable size is used to hide data with less visual impairments.

    Experimental results show resiliency of the proposed scheme against large blurring attack like mean and Gaussian filtering, non linear filtering like median, image rescaling, symmetric image cropping, lower order bit manipulation of gray values and loss data compression like JPEG with high compression ratio and low PSNR values. Almost as discreetly as the technology itself, digital watermarking has recently made its debut on the geo-imaging stage.



    This innovative technology is proving to be a cost-effective means of deterring copyright theft of mapping data and of ensuring the authenticity and integrity of asterisked image data. First developed around six years ago, digital watermarking is a sophisticated modern incarnation of steganography-the science of concealing information within other information. In the field of e-commerce, digital watermarking has already established itself as an effective deterrent against copyright theft of photographs and illustrations. Now digital watermarking software is finding uses within national mapping agencies and others working with asterisked images or map data. Current applications range from protecting valuable map data against copyright theft to securing photographic survey or reconnaissance images against tampering.
    Attached Files for Direct Download
      File Name:
      File Size:
      460.7 KB
      Total Downloads:
      1038
    * Click on the 'file icon' or 'file name' to start downloading

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Close
Login to Your Account