| 基于PCI总线的数字视频键控图像叠加卡的设计 |
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| 引用本文： | 王生祥,卢汉生,侯山峰,高稚允.基于PCI总线的数字视频键控图像叠加卡的设计[J].仪表技术与传感器,2002(9):26-28. |
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| 作者姓名： | 王生祥 卢汉生 侯山峰 高稚允 |
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| 作者单位： | 1. 北京理工大学信息工程学院光电工程系,北京,100081
2. 北京格非视频科技发展有限公司,北京,100029 |
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| 摘 要： | 设计了用于虚拟演播室的PCI总线数字视频键控图像叠加卡。该卡能实时完成背景数字视频和前景图像视频的实时叠加，并可通过alpha键控制前景视频和背景视频的叠加比例，也可单独输出前景视线或背景视频。键控技术作为理论基础被扼要阐述。详细讨论了PCI总线数字视频键控图像叠加卡的基本结构、数字视频编辑码的方法。系统时序发生和叠加处理的基本原理。给出了编制和调试开发SAA7146多媒体桥的内核级WDM（Win 32 Driver Model）设备驱动程序的方法和步骤。
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| 关 键 词： | PCI总线 图像叠加 数字视频 键控技术 虚拟演播室 |
| 文章编号： | 1002-1841(2002)09-0026-03 |
| 修稿时间： | 2002年1月15日 |
Development of PCI Bus Key Control Mix Card for Digital Video and Image |
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| Wang Shengxiang ,Lu Hansheng ,Hou Sanfeng ,Gao Zhiyun.Development of PCI Bus Key Control Mix Card for Digital Video and Image[J].Instrument Technique and Sensor,2002(9):26-28. |
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| Authors: | Wang Shengxiang Lu Hansheng Hou Sanfeng Gao Zhiyun |
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| Affiliation: | Wang Shengxiang 1,Lu Hansheng 1,Hou Sanfeng 2,Gao Zhiyun 1 |
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| Abstract: | A new card which using key control technology to mix digital video and image is developed.The card can mix foreground digital video and background image video in real time and can control the proportion of the foreground digital video and the background image video by alpha key.It can also bypass the foreground digital video or the background image video by oneself.The key control technology as the base theory is brought to point.The base structure of the card,the decoding and encoding method of the digital video and the base theory of time sequence generator and mix circuit is discussed in detail.Finaily,the procedure to develop the WDM device driver of SAA7146 is listed. |
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| Keywords: | Image Mix Digital Video Key Control Technology |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
