红外经纬仪视频图像判读系统研究

On video image interpretation system of infrared theodolite

红外经纬仪在海上靶场测控中有重要作用,对红外视频图像的判读直接影响红外经纬仪的测角精度。通过对红外视频图像的判读原理和方法的介绍,针对靶场红外图像的特点,提出一种中轴线判读方法,以及基于最大类间方差法的高阈值图像二值化算法,提高了视频判读的稳定性和准确性。在此基础上研制了一套红外视频图像判读系统,试验结果和误差分析表明了所提方法的有效性。

The infrared theodolite plays an important role in shooting range monitoring, and the video image interpretation directly affects the measurement precision of the infrared theodolite. The interpretation principle and method of infrared video image are introduced. An interpretation method using object central axis is proposed according to the infrared image characteristics of the shooting range. The characteristic point on the central axis is selected as the reference point for interpretation to obtain more real track parameters. An improved image segmentation approach is put forward, which has a higher threshold and can keep the shape/size of the object after image processing. The proposed methods enhanced the stability and accuracy of the video interpretation. An infrared video image interpretation system was developed. The test results as well as the error analy- sis verified the validity of the proposed approaches.