Invention Grant
- Patent Title: Method and device for super-resolution image reconstruction based on dictionary matching
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Application No.: US15749554Application Date: 2015-11-04
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Publication No.: US10339633B2Publication Date: 2019-07-02
- Inventor: Yang Zhao , Ronggang Wang , Wen Gao , Zhenyu Wang , Wenmin Wang
- Applicant: Peking University Shenzhen Graduate School
- Applicant Address: CN Shenzhen
- Assignee: Peking University Shenzhen Graduate School
- Current Assignee: Peking University Shenzhen Graduate School
- Current Assignee Address: CN Shenzhen
- Agency: SV Patent Service
- International Application: PCT/CN2015/093765 WO 20151104
- International Announcement: WO2017/075768 WO 20170511
- Main IPC: G06T3/40
- IPC: G06T3/40 ; G06K9/46 ; G06K9/62

Abstract:
The present application provides a method and a device for super-resolution image reconstruction based on dictionary matching. The method includes: establishing a matching dictionary library; inputting an image to be reconstructed into a multi-layer linear filter network; extracting a local characteristic of the image to be reconstructed; searching the matching dictionary library for a local characteristic of a low-resolution image block having the highest similarity with the local characteristic of the image to be reconstructed; searching the matching dictionary library for a residual of a combined sample where the local characteristic of the low-resolution image block with the highest similarity is located; performing interpolation amplification on the local characteristic of the low-resolution image block having the highest similarity; and adding the residual to a result of the interpolation amplification to obtain a reconstructed high-resolution image block. The local characteristics of the image to be reconstructed extracted by the multi-layer linear filter network have higher precision. Thus, a higher matching degree can be obtained during subsequent matching with the matching dictionary library, and the reconstructed image has a better quality. Therefore, the present invention can greatly improve the quality of the high-resolution image to be reconstructed.
Public/Granted literature
- US20180232857A1 Method and device for super-resolution image reconstruction based on dictionary matching Public/Granted day:2018-08-16
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