| 基于GPU实时视频处理的多投影融合系统研究 |
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| 引用本文： | 李晓光,刘宏哲,袁家政.基于GPU实时视频处理的多投影融合系统研究[J].计算机科学,2015,42(9):285-288. |
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| 作者姓名： | 李晓光 刘宏哲 袁家政 |
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| 作者单位： | 北京联合大学北京市信息服务工程重点实验室 北京100101,北京联合大学北京市信息服务工程重点实验室 北京100101,北京联合大学北京市信息服务工程重点实验室 北京100101 |
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| 基金项目： | 本文受国家自然科学基金(61372148,61271369,41101111),北京市教育委员会科技发展计划面上项目(SQKM201411417004),北京联合大学人才强校计划人才资助 |
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| 摘 要： | 介绍了GPU高速并行运算及其对数字图像、视频处理的重要作用。针对多通道环幕投影系统,采用CPU与GPU组合的异构计算结构,提出了一种视频实时处理方案。该方案通过DirectShow的链路模型保证了视频处理的灵活性,设计并采用可用于并行运算的几何校正、边缘融合算法,提升了视频处理的高效性。这一构架可以用于单通道4k格式视频的高质量效果展示,同时能有效降低构建成本,提高系统的经济实用性。
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| 关 键 词： | 并行运算 多通道投影 实时视频处理 DirectShow 几何校正 边缘融合 |
Multi-projector Displays System Research Based on GPU Real-time Video Processing |
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| LI Xiao-guang,LIU Hong-zhe and YUAN Jia-zheng.Multi-projector Displays System Research Based on GPU Real-time Video Processing[J].Computer Science,2015,42(9):285-288. |
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| Authors: | LI Xiao-guang LIU Hong-zhe and YUAN Jia-zheng |
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| Affiliation: | Beijing Key Laboratory of Information Service Engineering,Beijing Union University,Beijing 100101,China,Beijing Key Laboratory of Information Service Engineering,Beijing Union University,Beijing 100101,China and Beijing Key Laboratory of Information Service Engineering,Beijing Union University,Beijing 100101,China |
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| Abstract: | This paper introduced GPU high-speed parallel computing,which plays an important role in digital image and video processing.For multi-channel surround screen projection system,we used a combination of CPU and GPU heterogeneous computing structure,and proposed a real-time video processing solution.By using link model of DirectShow, the program ensures the flexibility of video processing.Geometric correction and edge blending algorithm are designed for parallel computing to enhance the efficiency of video processing.This framework can be used for single-channel,high-quality 4k format video display,effectively reduces building costs,and improves economic practicality of the system. |
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| Keywords: | Parallel computing Multi-channel projection Real-time video processing DirectShow Geometric correction Edge blending |
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