| 刘艳琪.一种新的基于图像边缘的插值算法[J].南华大学学报(自然科学版),2009,23(2):63~65.[LIU Yan-qi.A New Edge-directed Image Interpolation Algorithm[J].Journal of University of South China(Science and Technology),2009,23(2):63~65.] |
| 一种新的基于图像边缘的插值算法 |
| A New Edge-directed Image Interpolation Algorithm |
| 投稿时间：2009-04-03 |
| DOI： |
| 中文关键词: 图像插值 边缘检测 距离密次反比 |
| 英文关键词:image interpolation edge-detection inverse distance weighted |
| 基金项目: |
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| 中文摘要: |
| 灰度图像放大时,插值所具有的平滑作用会退化图像的高频部分,使放大图像轮廓变得模糊,本文提出了一种新的图像插值算法,先通过边缘检测分离出图像的平坦区域和边缘区域,对图像的平坦区域采用双线性插值法,对图像的边缘部分采用距离密次反比法,实验证明该算法有效地保持了边缘信息,得到了较好的视觉效果. |
| 英文摘要: |
| When gray images are magnified,the smoothing effect of gray level interpolation may degrade the fine details in images and make contours become blurred.A new image interpolation algorithm is proposed in this paper,which is divided by a first-order differential operator and interpolates flat and edge regions respectively.In flat regions the bilinear interpolation is applied,and the interpolation algorithm is employed in edge regions.Experimental results demonstrate that the algorithm not only preserves the edge effectively,but also improve the visual quality of the interpolated images. |
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