利用数码相机测定果树叶面积的新方法

 本文提出的是一个快速的非破坏性叶面积测定新方法, 可测定苹果、葡萄等各种果树叶面积,可在田间或室内测定活体或离体叶片的面积。其原理是利用数码相机(或数码摄像机) 拍照获取叶片和刻度直尺的图像, 利用软件对图像进行处理得到每平方厘米面积的像素数和叶片图像的像素数, 再通过计算得出叶片的面积。对其测算准确度进行检验, 结果表明苹果叶面积的测算误差为0.57% ～0.80%、葡萄叶面积的测算误差为1.05%～1.43% , 说明用新方法可相当准确地测算果树叶面积。

A New Method for Measuring Leaf Area of Fruit Trees Using Digital Camera

The new method was a rapid non-destructive leaf area measurement method,it could be used to measure leaf area of apple,grape and other fruit trees,living plants or detached leaves in the field or laboratory. In this method,digital camera was used to capture the image of leaf and scale ruler,image processing software was used to get pixels per square centimeter and the pixels of leaf image,then leaf area was calculated. The accuracy of new method was verified,the estimation error of apple leaf area was among 0.57%-0.80% and that of grape leaf area was among 1.05%-1.43%,these results indicated that the new method could provide high accurate estimation for leaf area of fruit trees.