中圖分類號(hào): TN911.73 文獻(xiàn)標(biāo)識(shí)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