Ancient book image restoration method, terminal equipment and storage medium

Abstract

The invention relates to an ancient book image restoration method, terminal equipment and a storage medium. The method comprises the steps of S1 constructing an ancient book image restoration model based on morphological decomposition; S2 introducing auxiliary variables Q0, Q1 and Q2 through an alternating multiplier iteration method, introducing Lagrange multiplier secondary penalty terms and secondary penalty term coefficients lambda0, lambda1 and lambda2 corresponding to the auxiliary variables Q0, Q1 and Q2, and converting solution of the formula in the step S1 into solution of FC, FT, Q0, Q1 and Q2; and S3 carrying out iterative training on the ancient book image restoration model, calculating a restored image F of the current iteration by respectively solving FC, FT, Q0, Q1 and Q2 in each iteration, further calculating whether the restored image F is true or not, and outputting the restored image F (k + 1) in the current iteration if the restored image F is true. According to the method, the ancient book image restoration model based on morphological component analysis and Lp pseudo norm is proposed, then an alternating multiplier iteration method is introduced to decompose the proposed model into a plurality of decoupled sub-problems, and then the sub-problems are solved, so that the ancient book image can be well restored.

Description

technical field [0001] The invention relates to the field of image analysis, in particular to an ancient book image restoration method, a terminal device and a storage medium. Background technique [0002] The Chinese culture has a rich heritage, and there are many ancient books left behind. The voluminous ancient books are not only the inheritance of the 5,000-year Chinese culture, but also the precious spiritual wealth of the descendants of the Yellow Emperor. Ancient books can not only intuitively reflect the prosperity of ancient China, but also allow future generations to understand the development of Chinese civilization. However, due to the long history, ancient books have been damaged by mold and insects, and the preservation technology of ancient books is limited, so a large number of ancient books need to be restored urgently. [0003] Common ancient book image restoration and removal methods include: restoration method based on median filter, restoration method ...

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Problems solved by technology

[0004] The above work usually understands the polluted image as the sum of the original image and the pollution source. The disadvantage of this approach is that the high-frequency texture information of the image may be destroyed while removing the pollution source.

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