基于图像的树木测量方法

A method of tree measurement based on image

摘要:

树木是城市绿化、美化的一个重要的组成部分,具有重要的科学、历史和观赏价值。传统的树木生长信息采集方式,利用人工使用卷尺或不易操作、低效率和复杂麻烦的大型测量仪器等,费时、费力、准确度又不高。结合计算机视觉、数学几何模型等技术,设计了一种新式的树木高度、胸径和冠幅测量模型,提出了基于图像的树木测量方法和实现了树木信息采集软件系统；为了得到更精确的测量结果,使用摄像头标定技术和坐标校正方法对图像进行畸变矫正；并且利用正交试验分析法分析本设计使用的最佳拍摄环境,最终相对误差控制在4%左右。本方法具有携带方便、操作简单、适用面广、准确度高的优势。

Abstract:

Ancient trees is an important part of city greening, has the important scientific, historical and ornamental value. The traditional tree growth way of collecting information using artificial tape measure or difficult to operate, inefficient and cumbersome set of large-scale measuring instruments, time-consuming, laborious, accuracy is not high. The design of the tree measurement method based on image combines computer vision and mathematics geometry model, With the android intelligent terminal platform of easy to carry and operate, design tree height, diameter and crown measurement model, which avoid using cross references, and design trees information collection system, To improve the measurement accuracy of the trees, using the camera calibration technique and coordinate correction method to correct the image distortion in opencv, Orthogonal experiment analysis is a good method to analyze the optimum shooting environment and provide valuable guidance to improve the accuracy of the data. The relative error is controlled at about 4%; This method has the advantages of convenient carrying, simple operation, wide application range and high accuracy.