远程激光成像中的关键角点特征采集器的嵌入式设计

发布时间：2018-03-10 08:23

本文选题：远程激光成像　切入点：关键角点　出处：《激光杂志》2017年10期 　论文类型：期刊论文

【摘要】：传统激光成像关键角点特征检测器,需要进行逐项分立检测,操作复杂,检测精度低。为了提高激光成像关键角点特征采集精度,设计基于CCD的远程激光成像中关键角点特征采集器,其通过CCD47-10型CCD图像传感器获取远程激光成像中的关键角点特征,将EP4CE15F17类型的FPGA当成时序产生和控制芯片,驱动CCD47-10图像传感器进行关键角点特征的采集。通过CCD信号预处理电路采集CCD图像传感器反馈的模拟信号,采用THS4503运算放大器对信号进行放大处理,将模拟信号变换成差分信号传递到A/D采样芯片,采样芯片通过ADS1605模数转换芯片对CCD输出信号进行去噪和A/D转换,获取关键角点特征的数字信号。实验结果说明,设计的采集器各项功能运行正常,可实现远程激光成像中关键角点特征的高效采集和处理。
[Abstract]:The traditional laser imaging key corner feature detector needs to carry on the item by item discrete detection, the operation is complex, the detection precision is low, in order to improve the laser imaging key corner feature collection accuracy, The key corner feature collector in remote laser imaging based on CCD is designed. The key corner feature in remote laser imaging is acquired by CCD47-10 type CCD image sensor. The FPGA of EP4CE15F17 type is regarded as a timing generation and control chip. The CCD47-10 image sensor is driven to collect the key corner features. The analog signal of CCD image sensor is collected by CCD signal preprocessing circuit, and the signal is amplified by THS4503 operational amplifier. The analog signal is transformed into a differential signal to be transferred to the A / D sampling chip. The sampling chip uses the ADS1605 A / D conversion chip to Denoise and convert the CCD output signal to obtain the digital signal of the key corner feature. The functions of the designed collector are normal and the key corner features of remote laser imaging can be collected and processed efficiently.
【作者单位】：黄河科技学院;
【基金】：郑州市嵌入式系统应用技术重点实验室(121PYFZX177) 郑州市科技局科技发展计划项目(20141372)
【分类号】：TN249;TP391.41

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