Amplitude shifted information embedding and detection method...

Details Amplitude shifted information embedding and detection method... Amplitude shifted information embedding and detection method...

2007-03-27

2007-03-27

Wu, Jingge (Department: 2624)

Image analysis

Applications

C382S205000, C382S232000, C382S240000

Reexamination Certificate

active

10331986

ABSTRACT:
An amplitude shifted information embedding and detection method based upon the phase equalization is disclosed. It utilizes an equalization function to perform equalization computations on the DCT coefficients of an image. Through pixel shift, the original DCT coefficients have energy changes. Such changes are used to generate a visually compatible image with keys embedded at the same time. The information embedded image is very robust in the sense that the key information can still be accurately restored without comparing with the original image even if it is destroyed.

REFERENCES:
patent: 5995241 (1999-11-01), Nakatani et al.
patent: 6513004 (2003-01-01), Rigazio et al.
patent: 6532541 (2003-03-01), Chang et al.
patent: 6680972 (2004-01-01), Liljeryd et al.
patent: 2002/0131617 (2002-09-01), Pelly et al.

Affiliated with

Also associated with

Rating

Amplitude shifted information embedding and detection method... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Amplitude shifted information embedding and detection method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplitude shifted information embedding and detection method... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3783251