摘要
为了解决在一个屏幕上收看多个信号源的问题,对基于FPGA技术的视频图像画面分割器进行了研究。研究的主要特色在于构建了以FPGA为核心器件的视频画面分割的硬件平台,首先,将DVI视频信号,经视频解码芯片转换为数字视频图像信号后送入异步FIFO缓冲。然后,根据画面分割需要进行视频图像数据抽取,并将抽取的视频图像数据按照一定的规则存储到图像存储器。最后,按照数字视频图像的数据格式,将四路视频图像合成一路编码输出,实现了四路视频图像分割的功能,提高了系统集成度,并可根据系统需要修改设计和进一步扩展功能,增加了系统的灵活性,适用于多种不同领域。
In order to solve in one screen to watch more signal source of the problem, based on the FPGA technology of video image segmentation is studied. The main features of the study is to construct the FPGA as the core device of the hardware platform of video image segmentation .Firstly, four channels of DVI video are converted to digital video signal by the video decoder chip. Digital video signal is sent to the asynchronous FIFO buffer. Secondly, effective video signals are extracted from them according to the need of display and stored in memory according to certain rules. At last, the four channels video is synthesized according to the format of the digital image, implement the function of four channel display, The system also can be modified and expanded easily. Therefore, the flexibility of the system is further increased.and it can be applied in many fields.
出处
《电子设计工程》
2014年第1期44-46,50,共4页
Electronic Design Engineering
