计算机应用 ›› 2010, Vol. 30 ›› Issue (10): 2823-2824.

• 图形图像处理 • 上一篇    下一篇

基于彩色图像势能的非线性缩放算法

徐敏杰1,沈庆宏2   

  1. 1. 南京大学
    2.
  • 收稿日期:2010-03-22 修回日期:2010-05-07 发布日期:2010-09-21 出版日期:2010-10-01
  • 通讯作者: 徐敏杰

Non-linear scaling algorithm based on potential energy of color images

  • Received:2010-03-22 Revised:2010-05-07 Online:2010-09-21 Published:2010-10-01

摘要: 非线性缩放能够保持图像主体的特征与比例。基于图像梯度函数,在RGB模型下提出彩色图像的势能算法,利用势能找出图像强势区域。在弱势区域采用快速线性插值法缩放,维持强势区域比例以保护图像重要特征物。与传统图像缩放算法相比,所提算法有效克服了图像在拉伸时产生畸变的缺点。

关键词: 非线性缩放, 梯度函数, RGB模型, 图像势能, 线性插值

Abstract: Non-linear scaling can maintain the main characteristics and the ratio of the image. Based on the image gradient function, a new potential energy algorithm for color images was proposed in RGB model, and the strong regions were found using potential energy. Fast linear interpolation scaling was used in low energy regions, and it preserved those strong areas in order to protect important features of the image objects. Compared with the traditional image scaling algorithm, the proposed algorithm can overcome the shortcomings of image distortion generated by the scaling effectively.

Key words: non-linear scaling, gradient function, RGB model, image potential energy, linear interpolation

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