基于L-GMSD的图像通道检测技术

图像通道作为电视吊舱的主要模块是联系制导导弹和飞机之间的通信桥梁，是吊舱检测过程中的主要检测点。为实现图像通道的快速准确检测，采用模块化的设计思想，设计出一种方便快捷的图像通道检测系统。硬件系统以工控机为主控制器，基于PCI总线技术，实现图像信号的发送与采集，并提出一种基于梯度相似度偏差和亮度相结合的全参考客观图像质量评价算法(L GMSD)，将其嵌入到检测系统中，通过计算得出相关的质量评价参数与预先设置的阈值进行对比，来判断图像通道的好坏。实验结果表明，该系统能够很好实现对图像通道的检测，提高了测试效率，满足了测试需求。

Detection method of image channel based on L-GMSD

As the image channel is the main module of the pod, it is the bridge which connects the guided missile and aircraft and the detection of it is important. In order to realize the fast and accurate detection of the image channel, this paper uses the idea of modular design, and designs a convenient and fast method for image detection. The hardware of the system is based on the industrial control computer and the PCI bus technology is used to realize the transmission and collection of the image signal. This paper designs a kind of convenient and fast channel image detection system, proposes an image quality assessment method, which combines the gradient based similarity deviation and brightness. By using the threshold value we can easily judge whether the image channel can be used or not. The computer simulation results show that, this system can achieve the detection of image channels, improve the testing efficiency and meet the test requirements.