| 双线性插值算法在荔枝树光合模拟中叶片图像旋转中的应用 |
| |
| 引用本文： | 李震,洪添胜,吴伟斌,张文昭,郭灼. 双线性插值算法在荔枝树光合模拟中叶片图像旋转中的应用[J]. 农业工程学报, 2006, 22(11): 179-182 |
| |
| 作者姓名： | 李震 洪添胜 吴伟斌 张文昭 郭灼 |
| |
| 作者单位： | 华南农业大学工程学院,广州,510642;华南农业大学信息学院,广州,510642 |
| |
| 摘 要： | 为寻找荔枝冠层光合有效辐射模拟中合适的叶片旋转算法，实验针对树叶灰度图像，将双线性插值算法引入图像旋转中，并与采用最邻近插值算法的结果进行对比分析，着重比较了树叶与背景之间边缘的过渡情况和二值化后树叶所占面积的变化情况。结果表明，采用双线性插值算法目标与背景之间的过渡平滑，边界清晰，旋转后的图像清晰度较高；采用最邻近插值算法目标与背景之间的过渡不平滑，有比较严重的方块效应，图像整体清晰度较差，二值化后图像的平均变形达到20个像素。
|
| 关 键 词： | 图像旋转 双线性插值 最邻近插值 果树喷雾 光合有效辐射 |
| 文章编号： | 1002-6819(2006)11-0179-04 |
| 收稿时间： | 2005-01-25 |
| 修稿时间： | 2006-06-27 |
Application of bilinear interpolation algorithm in litchi leaf image rotation for photosynthetic simulation |
| |
| Li Zhen,Hong Tiansheng,Wu Weibin,Zhang Wenzhao and Guo Zhuo. Application of bilinear interpolation algorithm in litchi leaf image rotation for photosynthetic simulation[J]. Transactions of the Chinese Society of Agricultural Engineering, 2006, 22(11): 179-182 |
| |
| Authors: | Li Zhen Hong Tiansheng Wu Weibin Zhang Wenzhao Guo Zhuo |
| |
| Affiliation: | College of Engineering, South China Agricultural University, Guangzhou 510642, China;College of Information, South China Agricultural University, Guangzhou 510642, China;College of Engineering, South China Agricultural University, Guangzhou 510642, China;College of Engineering, South China Agricultural University, Guangzhou 510642, China;College of Engineering, South China Agricultural University, Guangzhou 510642, China |
| |
| Abstract: | The purpose of this experiment was to find a suitable algorithm for leaf rotation in the Litchi canopy PAR(Photosynthetically Active Radiation) simulation. Bilinear interpolation algorithm was introduced to the rotation of leaf gray pictures in this study. Pictures were also rotated with the nearest interpolation algorithm for comparison. Results were analyzed emphasizing the transition of the borderline and ratio of target area in the binary image. It showed that in the rotated images, when using the bilinear interpolation algorithm, the transition between target and background was smooth, the borderline was clear and the definition of the whole image was satisfying. By using the nearest interpolation algorithm, the definition of the rotated image was not so satisfying that there were diamond effects on the borderline of target and background. It also showed that there was a distortion of 20 pixels in binary image for average when using nearest interpolation algorithm. |
| |
| Keywords: | image rotation bilinear interpolation nearest interpolation fruit tree spraying photosynthetical active radiation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
|
点击此处可从《农业工程学报》下载全文 |
|
