作物面积获取的视觉测距建模  

Visual ranging experimental study on crop acreage estimation

作　　者：马蓉[1] 毛恩荣[1] 杨邦杰[2] 宋正河[1] 汪庆发[2] 

机构地区：[1]中国农业大学工学院 [2]农业部农业资源监测总站,北京100026

出　　处：《江苏大学学报（自然科学版）》2006年第3期197-201,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(30471009)

摘　　要：针对作物分类面积车载式地面调查系统测算模型确定问题,基于直接标定法设计了测距试验,提出用麦夸特法求解只包含光轴倾角的单因素模型,并用Matlab实现算法.方差分析结果表明所得模型预测精度优于理论模型.模拟实际工作情况,加入高差因素,进行了旋转正交试验,所得二次多项式回归模型预测精度比相应高差水平下该单因素模型略低,从而论证了该单因素模型不仅有效而且较优.Aimed to determine the acreage-estimating model of on-board ground range-measuring test is designed according to direct calibration method. A single and its arithmetic is implemented with Matlab based on sampling system the factor model is given Marquardt. The variance analysis shows that it excels the theoretical model in prediction. The real working condition was simulated with height difference factor being added in, the orthogonal rotation test is performed and a quadratic polynomial regression model is derived. With better predicted values, the forementioned single factor model is demonstrated not only valid but also superior.

关 键 词：作物面积 地面调查 视觉测距 直接标定 测算模型 正交旋转 非线性拟合 

分 类 号：S127[农业科学—农业基础科学]