摘要
数字摄像夜间能见度仪的关键技术之一在于高速、实时地处理CCD采集的目标光源和黑体的图像信息。设计了一种基于TMS320DM642的小型化、便携嵌入式能见度测量系统,从硬件和软件上给于实现,并将其应用到数字摄像夜间能见度测量中。利用CCD采集25帧/s的PAL制视频流,数字化后送入DSP处理器,通过DSP实现目标光源与黑体的图像分割与定位算法,完成数字摄像夜间能见度的测量。实验结果表明设计的嵌入式系统能较好完成夜间能见度的测量。
One of the key technologies of digital camera night visibility instrument is to process the light source and bold image acquired by CCD in high-speed and real-time way.A miniature and portable embedded visibility measurement system based on TMS320DM642 was designed,and used in night visibility measurement of digital camera nighttime visibility instrument.The CCD collects PAL video stream at 25 frames per second,and sends it to DSP,with which the segmentation and positioning of light source and bold image are realized,and the night visibility detection of the digital camera is completed.The comparative experiment results show that the embedded system can implement the night visibility measurement perfectly.
出处
《现代电子技术》
2012年第13期119-122,共4页
Modern Electronics Technique
基金
北京市自然科学基金资助项目(GYHY2011006047)
