基于FPGA的大屏幕多投影无缝拼接系统的设计研究

发布时间：2018-04-02 22:33

本文选题：FPGA　切入点：无缝拼接　出处：《浙江大学》2015年硕士论文

【摘要】：大屏幕多投影无缝拼接系统在大型场馆展览、交通指挥调度、公共安全管理、能源资源监控等领域有着广泛的应用,它通过几何校正、边缘融合、颜色校正等技术,将多台投影机的投影画面无缝拼接在一起,在大屏幕上组成一个完整的超大画面,可以同时显示更多的信息,还可以给观众带来更强的沉浸感以实现虚拟现实。目前市场上的大屏幕多投影无缝拼接系统型号很多,但无论哪一种方案,视频处理设备的成本和价格都居高不下,而且其功耗也都较大,不利于面向大众化的推广普及。本论文通过研究现有各多投影无缝拼接方案的优缺点以及拼接融合算法,提出了一种基于FPGA的大屏幕多投影无缝拼接系统,并设计制作了专用的视频处理硬件设备,在实现投影画面无缝拼接融合的同时,还可以实现低成本和低功耗。本文的主要工作及创新点包括：1.提出了一种基于FPGA的大屏幕多投影无缝拼接系统方案,设计了“软件预处理”和“硬件实时拼接融合”分步式的工作模式；2.研究了大屏幕多投影无缝拼接系统所用多投影拼接融合算法,根据FPGA的特性对硬件实时拼接融合所需算法进行了近似处理,并根据处理后的算法制定了参数文件的数据格式,使得软件预处理阶段和硬件实时拼接融合阶段有了一个过渡的桥梁；3.设计制作了基于FPGA的零阶插值和双线性插值两款拼接融合器,可实现对一路高清视频信号进行实时拼接融合处理,然后输出两路经过处理的视频投影信号；4.设计制作了一款基于FPGA的图像分割器,可实现对一路高清视频信号的分割处理,并输出三路分割后的视频信号；5.利用所设计制作的拼接融合器和图像分割器,设计实现了1×2两投影、1×4四投影、1×6六投影、2×2四投影和2×3六投影这5种大屏幕多投影无缝拼接方式,具有体积小、成本低、功耗低的优点。
[Abstract]:The large screen multi-projection seamless splicing system has been widely used in the exhibition of large venues, traffic command and scheduling, public safety management, energy resources monitoring and other fields. It uses geometric correction, edge fusion, color correction and other technologies.The projection images of multiple projectors are seamlessly stitched together to form a complete super-large picture on the large screen, which can display more information at the same time, and can also bring a stronger immersive feeling to the audience to realize virtual reality.At present, there are many models of large screen multi-projection seamless splicing system, but the cost and price of video processing equipment are high, and its power consumption is high, which is not conducive to popularizing and popularizing.By studying the advantages and disadvantages of the existing multi-projection seamless stitching schemes and the fusion algorithm, a large screen multi-projection seamless stitching system based on FPGA is proposed, and a special video processing hardware device is designed and manufactured.At the same time, it can realize low cost and low power consumption.The main work and innovation of this paper include: 1.In this paper, a scheme of large screen multi-projection seamless splicing system based on FPGA is proposed, and the working mode of "software preprocessing" and "hardware real-time splicing fusion" is designed.This paper studies the multi-projection splicing fusion algorithm used in the large screen multi-projection seamless stitching system. According to the characteristics of FPGA, the algorithm needed for hardware real-time splicing fusion is approximately processed, and the data format of the parameter file is established according to the processed algorithm.The software preprocessing stage and the hardware real-time splicing fusion stage have a bridge of transition.Two splicing fusion devices, zero order interpolation and bilinear interpolation based on FPGA, are designed and manufactured, which can realize the real-time splicing and fusion of one high definition video signal, and then output two processed video projection signals.An image segmenter based on FPGA is designed and fabricated, which can realize the segmentation of one high definition video signal and output three channels of video signal.By using the splicing fusion device and image segmenter designed and manufactured, five kinds of multi-projection seamless splicing modes of 1 脳 2, 1 脳 4, 1 脳 4, 1 脳 6, 6, 6, 2 脳 24 and 2 脳 3 6 are designed and realized, which have the advantages of small volume and low cost.The advantage of low power consumption.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN791;TN946.1

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