-基于FPGA的8位硬件乘法器设计 (2).doc

本科毕业论文
小麦腥黑穗病鉴定的SVM方法
摘要
纹理图像的自动分类在许多领域都是一项关键的任务,其中包括农作物产品等级分类、可视场景的目标检测、信息检索、医学应用等等。当直接在图像上进行操作时,传统的分类方法由于数据的高维特性表现差,很难取得较好的效果。但是支持向量机(Support Vector Machine,SVM)可以克服极高维表示的缺陷,被广泛运用到纹理图像分类中去。
本文所做的主要工作如下:
,分析支持向量机核函数中各个参数对分类模型的影响,比较各参数对SVM的寻优能力。同时简单介绍SVM在纹理图像分类中的应用。
、Tamura方法和Gabor滤波方法分别提取图像的纹理特征,并对比三种方法对分类出石纹和树皮纹理两种图像的能力。本文着重分析了灰度共生矩阵这一种方法。
,并对SVM的分类能力进行测试和比较,分析了不同参数优化方法对图像分类准确率的影响。
关键词:支持向量机纹理图像特征图像分类腥黑穗病鉴定
Wheat red in brand identification method of SVM
Li Zongshang
(College of Engineering, South China Agricultural University, Guangzhou 510642, China)
Abstract: Automatic classification of texture image is a key task in many fields, including agricultural products classification, visual scene detection, information retrieval, medical applications, and so on. When operating directly on the image, the traditional classification method as the data of high dimension characteristic performance is poor, it is difficult to obtain good effect. But the Support Vector Machine (SVM) can e the defects very high-dimensional said, was widely used in the texture image classification.
In this paper, the main work done is as follows:
1. The brief analysis of the working principle of support vector machine, analyzing each parameter of kernel function of support vector machine on the classification model, the influence paring the parameters of the SVM optimization ability. At the same time simple introduces the application of SVM in the texture image classification.
2. For gray image using gray level co-occurrence matrix method, Tamura method and Gabor filtering method respectively to extract image texture feature, pared three methods of classification the stone and bark two texture image. This paper analyzes the graylevel co-occurrence matrix as a kind of method.
3. Application of SVM for texture image classification algorithm for Dwarf bunt and Stinking sample training and these two kinds of