一种基于局部秩先验的单幅图像超分辨率重建方法

专利类型：发明专利

语言：中文

申请号：CN201410386583.6

申请日：20140807

发明人：龚卫国胡伦庭李伟红李进明

申请人：重庆大学

申请人地址：400030 重庆市沙坪坝区沙正街174号

公开日：20170510

公开号：CN104123707B

代理人：康海燕

代理机构：重庆华科专利事务所 50123

摘　　要：本发明是一种基于局部秩先验的单幅图像超分辨率重建方法。其核心是通过学习方法得到高分辨率图像的局部秩先验信息，利用这种先验信息，通过能量最小函数，约束待重建高分辨率图像的局部秩。然后将这种能量最小函数转化为局部秩约束的重建模型。考虑到图像的非局部特性，提出一种全局与非局部结合的优化模型。为了得到更好的非局部权值，还提出一种基于局部秩的优化的权值计算方法。本发明所提出的重建模型不仅能够很好的重建具有较多细节的高分辨率图像，而且能够减少重建图像的瑕疵以及锐化图像的边缘。

主权项：一种基于局部秩先验的单幅图像超分辨率重建方法，该方法包括以下步骤：(1)根据局部秩变换的原理，利用局部秩变换，将所得到的高低图像训练图像块分为两类： $P_{δ} = {X_{h}^{i}, Y_{l}^{i}, X_{δ}^{i}, X_{- δ}^{i}}_{i = 1}^{n_{1}}$ 和 $P_{- δ} = {X_{h}^{i}, Y关键词：法律状态：公开IPC专利分类号： G06T5/50var ShareData = new Array();
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