Image annotation using high order statistics in non-Euclidean spaces

Automatic image annotation is a promising way to achieve more effective image retrieval and image analysis by using keywords associated to the image content. Due to the semantic gap between low-level visual features and high-level semantic concepts of an image, however, the performances of many existing algorithms are not so satisfactory. In this paper, a novel image classification scheme, named high order statistics based maximum a posterior (HOS-MAP), is proposed to deal with the issue of image annotation. To bridge the gap between human judgment and machine intelligence, the proposed scheme first constructs a dissimilarity representation for each image in a non-Euclidean space; then, the information of dissimilarity diffusion distribution for each image is achieved with respect to the high-order statistics of a triplet of nearest neighbor images; finally, a maximum a posteriori algorithm with the information of Gaussian Mixture Model and dissimilarity diffusion distribution is adopted to estimate the relevance between each annotation and an input un-annotated image. Experimental results on a general-purpose image database demonstrate the effectiveness and efficiency of the proposed automatic image annotation scheme.     

气体动静压轴承实验台加载装置误差角度的测量

为了实现气体动静压轴承实验台加载装置误差角度的测量,建立了误差角度测量的理论模型.利用Corel DRAW10.0强大的图像、图形处理功能,对实验台加载装置误差角度进行了测量,为后续的加载力误差分析奠定了基础.同时,对测量方法与万能角度尺进行比较,得出使用方法的最大误差为+4',证明方法是切实可行的,可以满足精密测量的要求.     

Corel Chemlab在化学动力学实验教学中的应用

虚拟化学实验室(Corel Chemlab)是一款模拟实验仿真软件,为化学实验和教学提供虚拟的实验平台.本文简介软件的功能和使用,利用软件模拟氧化-还原反应过程,推导反应速率方程并计算反应的活化能,研究浓度和温度对化学反应速率的影响.结果表明,软件在模拟化学动力学实验中具有良好的可操作性和实用性,在实验教学中发挥着积极作用.     

CorelDRAW和Illustrator使用技巧探讨

在广告业的设计实践中,Corel DRAW和Illustrator两款软件扮演着重要的角色,二者各有所长,互为补充。本文基于两款软件功能,对其使用技巧进行了归纳与对比。     

巧用Photoshop Corel DRAW制作水利工程规划图

本文介绍水利工程规划图的绘制特点。以及如何巧用平面绘图软件绘制水利工程规划图。     

浅谈DWG工程图形转换为TIF图形的技巧

在工程技术与大专院校教学中,计算机绘图软件占有重要地位。目前,在机械加工技术、计算机平面图形设计、动漫等专业教学中,均开设AutoCAD或CorelDRAW软件绘制等相关课程。本文从AutoCAD软件绘制的DWG图形入手,讨论了通过CordDRAW软件转换为TIF图形的方法与技术。