应用WinCAM软件判识分析草坪盖度

Identification and analysis of turf coverage with WinCAM software

用点刺法对100个草坪盖度进行了测量,同时用数码相机获取照片图像,利用颜色分析软件WinCAM分析判识了数字化盖度,在所选取的一致颜色标准下,分析比较了实测盖度和软件输出盖度的拟合关系。结果表明:1)当盖度小于10%或大于90%,实测值与软件输出值吻合度高,在10%～90%的盖度范围内,软件输出盖度比实地盖度偏低。2)当实地盖度相同时,软件输出测盖度因草地类型和环境背景不同而有变异,散点并不构成一条光滑的曲线,而分散在一个范围内。3)当盖度小于20%,以y=0.013 58x+0.733 9的线性关系为校正系数,当盖度大于20%,以泰勒级数拟合函数y=0.052 68+0.673 8x+0.845 19x2-32.166x3+234.270x4-786.769 7x5+1 437.828x6-1 464.822x7+775.926 7x8-164.943x9。

The color analysis software WinCAM was used to measure the turf coverage by analyzing the digital image with quadrate method and the measured coverage data were compared to those by needling method on campus of Lanzhou University from April 20 to May 15,2009.The result indicated that 1） the estimated coverage data by WinCAM could well fitted to the actual data while the turf coverage ranged less than 10% and more than 90%.However,the estimated data were poor while the turf coverage ranged from 10% to 90%.2） The estimated coverage varied depending on the turf types and environmental background while the measurement was conducted at same site.3） The functional relationship between actual and estimated coverage data could be described with y=0.0135 8x＋0.733 9（while the coverage was below 20%） or Taylor series y=0.052 68＋0.673 8x＋0.845 19x2-32.166x3＋234.270x4-786.769 7x5＋1 437.828x6-1 464.822x7＋775.926 7x8-164.943x9（while the coverage was over 20%）.