The invention relates to a rotating blade high-dynamic image acquisition method, which comprises the following steps of: before a helicopter takes off, rotating a blade to a sunny direction or a shady direction, starting a flapping angle measuring device to acquire a target image, and determining an exposure time initial value by using an automatic exposure method; manually adjusting the exposure time on the basis of the exposure time initial value to obtain fixed exposure time; after the helicopter takes off, the flapping angle measuring equipment collects a target image at a fixed exposure time, and performs image enhancement on the collected target image by using an image high-dynamic display method to obtain an output image. According to the invention, the target image is acquired by adopting automatic exposure, manual exposure and fixed exposure time, and the image is enhanced by utilizing an image high-dynamic display technology, so that the target image with high contrast is acquired in other directions while the overexposure of the target image in the sunny and shady directions is greatly inhibited, the detection and positioning of the target by a subsequent calculation unit are facilitated, and the detection efficiency is improved. And the accuracy and integrity of waving angle measurement are ensured.
本发明涉及一种旋转桨叶高动态图像采集方法,包括以下步骤:在直升机起飞前,将桨叶旋转到向阳方向或者背阳方向,启动挥舞角测量设备采集靶标图像,利用自动曝光方法确定曝光时间初始值;在曝光时间初始值的基础上手动调节曝光时间,得到固定曝光时间;在直升机起飞后,挥舞角测量设备以固定曝光时间采集靶标图像,并利用图像高动态显示方法对采集的靶标图像进行图像增强,得到输出图像。本发明采用自动曝光、手动曝光、固定曝光时间采集靶标图像并利用图像高动态显示技术增强图像,极大抑制了向阳和背阳方向靶标图像过曝的同时,在其他方向上采集到高对比度的靶标图像,便于后续计算单元对靶标的检测和定位,保证挥舞角测量的准确性和完整性。
Rotating blade high-dynamic image acquisition method
旋转桨叶高动态图像采集方法
2023-04-18
Patent
Electronic Resource
Chinese
IPC: | H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen |
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