Piecewise affine kernel tracking for non-planar targets

Since the multiple kernel representation opened in tracking the possibility of representing several features of the target in the same model, tracking multiple features using kernel-based methods has received a great attention. In spite of these efforts, the formulation has been reduced to tracking planar targets or targets rotating inside a plane parallel to the image plane. The aim of this paper is to extend the multi-kernel tracking to cope with situations different to those. To this end, we consider the triangular mesh described by the centers of the kernels and we develop the estimation of a set of affine transforms, one at each mesh triangle, subject to the constraints that each affine transform of a triangle must be compatible with the affine transforms coming from contiguous triangles. The method is applied to sequences including face and car tracking. Results show an outperformance respect to previous kernel tracking methods, which generally work with a too restricted set of movements.     

Test frame updating in CPM testing of Prolog programs

Category Partition Method (CPM) is a general approach to specification-based program testing, where test frame reduction and refinement are two important issues. Test frame reduction is necessary since too many test frames may be produced, and test frame refinement is important since during CPM testing new information about test frame generation may be achieved and considered incrementally. Besides the information provided by testers or users, implementation related knowledge offers alternative information for reducing and refining CPM test frames. This paper explores the idea by proposing a call patterns semantics based test frame updating method for Prolog programs, in which a call patterns analysis is used to collect information about the way in which procedures are used in a program. The updated test frames will be represented as constraints. The effect of our test frame updating is two-fold. On one hand, it removes “uncared” data from the original set of test frames; on the other hand, it refines the test frames to which we should pay more attention. The first effect makes the input domain on which a procedure must be tested a subset of the procedure’s input domain, and the latter makes testers stand more chance to find out the faults that are more likely to show their presence in the use of the program under consideration. Our test frame updating method preserves the effectiveness of CPM testing with respect to the detection of faults we care. The test case generation from the updated set of test frames is also discussed. In order to show the applicability of our method an approximation call patterns semantics is proposed, and the test frame updating on the semantics is illustrated by an example.

“宏”的应用

VB是大家较熟悉的计算机编程语言,而在不少的应用软件中已嵌套了面向对象的VBA,如果能掌握了VBA的使用将会使工作效率达到事半功倍的效果,这对工程技术人员非常重要,该文简要介绍了VBA的使用方法。     

基于VB与MATLAB编程模拟光栅光谱分析系统

该仿真软件将Matlab的计算优势与Visual Basic图形用户界面开发方面的优势结合起来仿真模拟了单色光单缝衍射和光栅衍射实验,实验结果的图样细致逼真,结合3D动画演示使整个物理过程变得直观,为光学的理论分析和实验教学提供了新的途径。     

EXCEL数据高级查询的分析与实现

EXCEL对批量数据的多次重复或相似的统计和交叉性集合运算操作比较困难或效率不高,而使用Visual Basic开发平台利用ADO数据库连接和操作技术可以很好的解决这样的问题,提高EXCEL文件数据的处理效率。这个方法前提利用SQL语言的高度灵活的SELECT语句．以实现EXCEL单个或多个数据表数据的快速统计汇总、组合计算等,支持分组和排序。同时考虑到数据的输出．则使用了EXCEL的VBA技术的QueryTable对象实现ADO记录集数据向EXCEL文件的快速导入。     

项目教学法在开放教育《VB程序设计》辅导中的应用

开放教育教学辅导中“项目教学法”,就是精心设计辅导项目、传授规范知识、优化教学过程和注重操作技能的培养     

基于机器视觉的蟋蟀体态测量

设计一套基于机器视觉的蟋蟀体态测量装置,初步研究用图像处理和图像测量的方法实现对蟋蟀躯干长宽的测量.该装置构建一个PC-Based的机器视觉系统,利用VisuaI Basic开发工具编写图像处理算法和图像测量算法的程序.应用惯性主轴的方法实现蟋蟀图片位置的归一化,应用数学形态学分割算法实现了蟋蟀躯干与足和触角的分割,将分割后的躯干进行边缘提取,从而进行蟋蟀体态的测量.     

农科院校专业基础课标准化考试题库录入模块的设计

用Visual Foxpro程序设计语言系统提供的基类,创建一个子类,在农业微生物学标准化考试题库录入模块的建立过程中,多次使用此类创建对象,从而减少事件代码的编写,大大提高了应用程序的维护性。     

机械臂视觉伺服系统中的高精度实时特征提取

以机械臂视觉伺服系统为背景,立体视觉所需要的特征点为目标,提出一种基于颜色块的实时特征提取方法．特征点的定位分为粗定位和精定位两个过程,粗定位用来跟踪目标颜色块,精定位在粗定位的基础上,切出小图像并提取目标轮廓,利用犓犔变换对轮廓点进行分类,并通过最小二乘法对边缘点进行拟合．根据直线方程计算顶点的亚像素精度坐标,为下一步的目标位姿测量提供基础．实验结果验证了该方法的有效性．     

静态IP自动配置的实现

本文分析了静态分配IP网络中IP分配存在的问题以及解决方案,并介绍了使用WMI技术在Visaul C＋＋环境中的应用程序实现。