液晶与显示2012，Vol.27Issue(5)：708-712,5.DOI:10.3788/YJYXS20122705.0708
高斯滤波器在子弹三维图像特征提取中的应用
Application of Gaussian Filter in Extracting Bullet Feature of 3-D Bullet Image
摘要
Abstract
In order to compare the bullet automatically, the 3D texture information acquisition system of the bullet based on the structure light is established. Because the central axis and acquisition system axis 31 is difficult to completely overlap when we acquired three-dimensional information of bullets, so the corresponding coordinate rotation is need, especially when the bullet was deformed, it is unable to utilize the information that the bullet is approximate a cylindrical, this is very difficult for bullet extraction. Therefore this paper used the Gaussian approximation filter to get the mean line determined by Gauss filter, and then 3-D bullet information subtracts from mean line determined by Gauss filter, the bullet texture was extracted. 'Twelve order IIR digitai Gauss filter is designed using the impulse response method, its amplitude transmission characteristic deviation is less than 1.38% , significantly better than the ISO11562 specified 2. 5%. This method makes the bullet extraction process more simply, and the extraction result is more accurately, improving the accuracy of bullet comparison obviously.关键词
三维纹理/弹痕特征/高斯滤波器/高斯滤波中线Key words
3-D texture/ bullet feature/ Gaussian filter/ mean line by Gaussian filter分类
信息技术与安全科学引用本文复制引用
乔培玉,何昕,魏仲慧,王方雨,林为才..高斯滤波器在子弹三维图像特征提取中的应用[J].液晶与显示,2012,27(5):708-712,5.基金项目
公安部科技资助项目 （）
