基于Qt/Embedded视频采集方案的设计与实现  

Design and Implementation of Video Capture Programs Based on Qt/Embedded

作　　者：张玉萍[1] 邹澎[1] 

机构地区：[1]郑州大学信息工程学院,河南郑州450001

出　　处：《电视技术》2012年第23期65-68,共4页Video Engineering

摘　　要：为解决Qt/Embedded视频采集过程中图像的连续性和实现过程的简易性,基于ARM-Linux中V4L2(Video forLinux2)视频采集架构模型提出两种设计方案:一是使用Qt/Embedded提供的QThread类,将基于Linux视频采集应用程序移植到QT开发的GUI界面上;二是采用其中的QPainter类,直接实现USB视频采集显示。并以第二种方案为例将视频采集GUI发布到嵌入式设备上。以上方案的设计方法对非GUI到GUI的移植具有重要的参考意义,同时对视频图像的后端处理具有实用价值。In order to make the image continuity and simplicity in the video capture process in Qt/Embedded ,two schemes based on ARM-Linux V4L2 video capture architecture model are proposed. One is the use of the QThread class provided Qt/Embedded,porting Linux-based video capture applica- tion to the GUI interface of the QT development. The other is the use of QPainter class,directly implementing the USB video capture display. And with the second scheme for example releases the video collection GUI to the embedded equipment. The designed methods of the above options have important reference value to the transplantation of non-GUI to the GUI, and value in use back-end processing of video images.

关 键 词：QT EMBEDDED ARM—Linux V4L2 QThread类 QPainter类 USB视频采集 

分 类 号：Q945.23[生物学—植物学]