如何实现图像列表

在利用VC开发应用程序时,通常会用到列表控件,它的使用是相当容易的,但对于用户来说,在列表上查看信息时形式比较简单,特别是一些数据库应用,需要在查看记录的同时,显示出相应的图像信息,对于这一点常用的列表控件就无能为力了。 如果需要在应用中设置更为直观的列表,特别是在列表中以一定规律显示图象,可以为列表控件增加相应的属性和操作来完成。这里介绍一个实现图像列表控件的方法。

H.264解码器中参考帧队列的管理

H.264是ITU-T提出的新一代的视频压缩国际标准,同以往的视频标准相比,添加了很多新的设计思路,多参考帧预测就是其中之一。由于视频的数据量非常大,在H.264解码器的设计中,多参考帧的缓存机制成为影响速度的关键。本文设计了一种循环缓冲区,能够正确而有效的实现对参考帧队列的管理和维护。

Feature-based sequential partial vision measurement method for large scale machine parts

To realize the high-precision vision measurement for large scale machine parts, a new vision measurement method based on dimension features of sequential partial images is proposed. Instead of mosaicking the partial images, extracting the dimension features of the sequential partial images and deriving the part size according to the relationships between the sequential images is a novel method to realize the high- precision and fast measurement of machine parts. To overcome the corresponding problems arising from the relative rotation between two sequential partial images, a rectifying method based on texture features is put forward to effectively improve the processing speed. Finally, a case study is provided to demonstrate the analysis procedure and the effectiveness of the proposed method. The experiments show that the relative error is less than 0. 012% using the sequential image measurement method to gauge large scale straight-edge parts. The measurement precision meets the needs of precise measurement for sheet metal parts.

利用Visual Basic.NET2005制作电子相册

Visual Basic.NET2005是一种良好的Windows应用程序开发工具,特别适合于程序设计初学者学习,该文即是利用Visual Basic.NET2005编制一个有趣的Windows应用程序的全过程,以此与读者共享编程的乐趣。