The Design Of Crop Pests Image Acquisition And Processing Portable Device

With the rapid development of agricultural information technology, Agriculturalexpert system plays an increasingly important role in agricultural production. However, inthe course of agricultural expert system, the user need to be expressed in a series ofquestions and follow the prompts to select the answer, the use and operation was verycomplex. This article describes the software and hardware-based image acquisitionportable agricultural expert system functionality embedded technology and imageprocessing functions to achieve program aimed at simplifying the input method ofagricultural expert system. That is based on the embedded image acquisition andprocessing technology to capture the image analysis and processing. Extract the features ofpests, as the input information of the corresponding agricultural expert system. Users canget the features of pets by simply take pictures. Thereby simplify the operation steps ofusing agricultural expert system, Improve the accuracy of statements. Allowing usersquickly and easily using the expert system in the field of job site.Contents of this article:1. Analysis and design of the overall system.By comparing a variety of ARM processor and camera, Select the hardware deviceapplicable for the system. Hardware platform with Forlinx’s OK6410development board,the camera selected Vimicro’s ZC301camera. Through the analysis of image acquisitionand processing system, discusses the choice of system software and image processingsoftware. System software selected open source embedded Linux operating system, imageprocessing software OpenCV library has a good selection of portability.2. The construction of system software development environment.In a host machine installed Linux system, Set the ARM-Linux cross compileenvironment. The transplant of embedded Linux system to the development board,Including transplant Uboot bootloader, Linux kernel configuration and migration, create aroot file system; Finally, the OpenCV library for image processing carried out installationand configuration.3. The realization of the image acquisition system based on ARM-LinuxFor USB image capture device, Transplantation based V4L camera driver. The Datastructures of V4L interface functions and the way to obtain images were introduced indetail. By writing real-time image acquisition process, achieve a single image display andstorage. And the image acquisition system was tested in the development board hasrealized the real-time single frame image acquisition function. 4. The realization of image processing techniques based on OpenCVFocus on the correlation function based on the morphological image processing. Onthis basis, by using OpenCV functions and code implementation of image preprocessing,contour extraction and object recognition. The transplantation of OpenCV library to theARM embedded platform. OpenCV on ARM system was introduced in detail in themigration process, and the realization of image processing module in embedded platform.The innovation of this paper:This paper aims to make improvements on agricultural expert system input method,proposed a new human-computer interaction, it was image input method. Studied theportable image acquisition and processing system based on embedded technology for fieldcrop pests real-time image acquisition and processing, Extracted features of the pets asappropriate agricultural expert system input information. Steps to simplify the use ofagricultural expert system, Contribute to the popularization of agricultural expert system.