作物数字图像远程实时获取方法研究

Methods of Remote Real-time Acquisition of Crop Digital Image

作物图像获取方法是应用计算机视觉技术监测作物长势的首要问题。为此,对作物数字图像远程实时获取方法进行了研究。研究的作物数字图像远程实时获取系统由图像获取设备、下位机、数据传输系统、Web服务器和客户端等部分组成,包括用户管理与系统维护、数据库管理、图像获取与设备控制和数据处理与发布4个功能模块。系统利用带无线传输功能的数码相机和高清晰网络工业相机作为作物数字图像获取设备,并给出了图像获取设备的5种安装形式:移动车载、固定形式、滑动导轨、云台和综合形式;系统在图像获取设备到下位机之间采用有线或微波无线的传输方式,从下位机到Web服务器再到客户端采用Internet网络连接,通过增加带宽可以显著提高图像信息的传输速率;系统利用直接存取法建立作物图像数据库,并利用Web信息系统实现了作物图像信息的实时发布。

Image acquisition is a significant step of the research of monitoring crop conditions using computer vision technology. The crops digital image remote real-time acquisition system was studied in this article,which was composed of image acquisition equipment,lower position computer,data transmission system,Web server and client and involved four function modules,including the user management and system maintenance,the database administration,the image acquisition and device control,the data processing and broadcasting; the system used digital cameras with wireless transmission functions and the high clear network industry cameras as the crops digital image acquisition equipment,and 5 kinds of installation forms of the equipment were gave the vehicle type,the stationary type,the guide rail way type,PTZ control type and comprehensive form; the system used wired or the microwave wireless methods to transform images from the image acquisition equipment to the lower position computer,connect the lower position machine,the Web server and the clients through Internet,and it may obviously enhance the transmission speed through increasing the band width; the system used direct access method to establish crops image database,and real-time broadcasted the crops images using the Web information system.