The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2022
Filed:
Sep. 27, 2018
Wuyi University, Jiangmen, CN;
Yikui Zhai, Jiangmen, CN;
Wenbo Deng, Jiangmen, CN;
Ying Xu, Jiangmen, CN;
He Cao, Jiangmen, CN;
Junying Gan, Jiangmen, CN;
Tianlei Wang, Jiangmen, CN;
Junying Zeng, Jiangmen, CN;
Chuanbo Qin, Jiangmen, CN;
Chaoyun Mai, Jiangmen, CN;
Jinxin Wang, Jiangmen, CN;
Wuyi University, Jiangmen, CN;
Abstract
The present disclosure discloses an error modeling method and device for prediction context of reversible image watermarking. A predictor based on omnidirectional context is established; then, the prediction context is self-adaptively error modeled to obtain a self-adaptive error model; and finally, output data from the self-adaptive error model is fed back to the predictor to update and correct the prediction context, so as to correct a prediction value of a current pixel x[i,j]. Since the non-linear correlation between the current pixel and the prediction context thereof, i.e., the non-linear correlation redundancy between pixels can be found by the error modeling of the prediction context of the predictor, the non-linear correlation redundancy between the pixels can be effectively removed. Thus, the embeddable watermarking capacity can be increased.