中圖分類號: TN911.73 文獻(xiàn)標(biāo)識碼: A DOI:10.16157/j.issn.0258-7998.200771 中文引用格式: 海濤,,鮑宜帆,潘浩浩. 二階廣義全變分耦合非局部變換域模型的圖像放大[J].電子技術(shù)應(yīng)用,,2021,,47(11):90-94,104. 英文引用格式: Hai Tao,,Bao Yifan,,Pan Haohao. Image enlargement basing on second order total generalized variation coupling to non-local transform domain model[J]. Application of Electronic Technique,2021,,47(11):90-94,,104.
Image enlargement basing on second order total generalized variation coupling to non-local transform domain model
Hai Tao1,2,,3,,Bao Yifan4,5,,Pan Haohao1
1.Mechanical and Electrical Engineering Institute,,Nanyang Normal University,Nanyang 473061,,China,; 2.Henan Engineering Research Center for Radio Frequency Front End and Antenna of Millimeter Wave Wireless Communication System,,Nanyang 473061,China,; 3.Henan Intelligent Manufacturing Engineering Research Center for Vehicle Parts,,Nanyang 473061,China,; 4.Electro Optic Institute,,Nanjing University of Science & Technology,Nanjing 210094,,China,; 5.Nanyang Vocational College of Agriculture,Nanyang 473061,,China
Abstract: In order to improve the zoomed effect of the weak edge and texture of image,the image enlargement model is proposed based on partial differential equation, combining total generalized variation and non-local transform domain model . Using the non-local self-similarity property of the image through the three dimension transform of the group composed of similar image block, the sparse representation model in transform domain utilizes non-local information of the image effectively.Total Generalized Variation enhancing strong edges better and non-local transform domain model enhancing the weak edge and texture details better, the proposed model has better performance. Compared with other algorithms, the second-order generalized total variation coupling to non-local transform domain model achieves better amplification effect in dealing with strong edges, weak edges and details.
Key words : total generalized variation,;non-local transform domain model;non-local self-similarity,;image enlargement