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自适应立方卷积图像插值算法

DOI: 10.13700/j.bh.1001-5965.2013.0621, PP. 1463-1468

Keywords: 图像插值,边缘检测,立方卷积,梯度,峰值信噪比

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Abstract:

图像插值是图像处理的一项重要技术,可适用于多个领域,近年来多使用该技术进行图像缩放.针对传统图像缩放算法边缘处理效果较差、边缘检测插值算法复杂度高的问题,提出一种有效增强边缘轮廓的自适应立方卷积插值算法.该算法结合边缘梯度变化和立方卷积插值的特点,使得图像在平坦和纹理区域均能取得理想效果.实验结果表明,与基于边缘检测的插值算法相比,该算法具有较低的复杂度,平均运算时间降低了3.19s;与立方卷积算法相比,图像峰值信噪比有较大的提高,峰值信噪比增加了0.89dB.

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