Data processing apparatus and method

Data processing apparatus and method

  • CN 101,076,830 A
  • Filed: 12/06/2005
  • Published: 11/21/2007
  • Est. Priority Date: 12/09/2004
  • Status: Active Application
First Claim
Patent Images

1. , a kind of data processing equipment, being used for registration has utilized two-dimentional watermark recovery to carry out image encoded, this watermark comprises the watermarked frame pattern of watermark block for each frame of image, described watermark recovery comprises a plurality of zones, each zone of pattern comprises a watermark block of selecting according to key sequence from the predetermined set of possibility watermark block, described key sequence provides the predetermined sequence of selected watermark block, to form the watermark recovery of each frame, thereby the predetermined sequence of the frame that is suppressed with watermark is provided, and this data processing equipment comprises:

  • BMP, this BMP can move and produce certainly matching probability, this piece matching probability comprises the probability face of the possible distortion vector that each of set of the possible piece that is suppressed with watermark in this zone that is added to picture frame may watermark block at each zone of the present frame of the image that is suppressed with watermarkWatermark block prior probability counter, this watermark block prior probability counter can move and form the piece prior probability, this piece prior probability uses the estimation of present frame numbering prior probability value that the probable value of each possibility watermark block of the set that is present in this zone is provided at each zone of the present frame of the image that is suppressed with watermark, it is the probability of present frame that is suppressed with the image of watermark that this piece prior probability may frame provides frame in the sequence in the predetermined frame sequence eachDistortion probability calculation device, this distortion probability calculation device can move that to come according to piece prior probability and piece matching probability be that each zone of current image frame forms spatial prior probability face, and this spatial prior probability face provides the probability distribution of distortion vector for this zone,Markov distortion processor, this markov distortion processor can move at current each zone that is suppressed with the picture frame pattern of watermark revises spatial prior probability face with respect to other probability faces in each other zone in the frame of following the predefined paths that passes pattern, this markov distortion processor can move for each zone forms works as front space extrinsic probability face, this markov distortion processor can move according to the estimation of the spatial prior probability of being revised for each zone formation distortion vector, andFrame number probability calculation device, it is combined that this frame number probability calculation device can move the piece matching probability face that each of the space extrinsic probability face that each is regional and this zone may watermark block, this frame number probability calculation device can move the piece extrinsic probable value that forms each possible watermark block, described each possible watermark block is present in the zone of current image frame, this frame number probability calculation device can move the frame number extrinsic probable value of calculating each the possibility frame in the sequence that present frame is this frame by the probability of combination block extrinsic value and the watermark block that each is regional, and this frame number probability calculation device can move according to the estimation of frame number extrinsic probability renewal present frame numbering prior probability value.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×