Photovoltaic module image stitching method based on infrared video
A technology of image stitching and photovoltaic modules, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems of consuming a lot of time and not being able to quickly and intuitively detect the position of hot spots, and achieve the effect of automatic stitching
Pending Publication Date: 2018-11-30
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology
UAVs collect a large number of infrared videos of photovoltaic modules. Infrared videos cannot quickly and intuitively detect the location of hot spots, and manpower alone cannot complete such a huge workload. It is necessary to convert infrared videos into panoramic infrared images of photovoltaic arrays.
[0003] Video is composed of images frame by frame. Considering that each second of video contains many frames of images, the images of adjacent frames contain a lot of overlapping information, and image stitching of each frame of images will consume a lot of time.
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[0018] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] Such as figure 1 As shown, the embodiment of the present invention provides a photovoltaic module image stitching method based on infrared video, including the following steps:
[0020] S1, extracting the infrared video as an infrared image after setting the frame interval;
[0021] S2. Select the first infrared image and the second infrared image for preprocessing, then perform feature point detection respectively, match the feature points of the two images and filter, and finally complete the perspective transformation matrix of the second image, which is realized by image fusion image stitching;
[0022] S3. The new image is merged ...
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The invention discloses a photovoltaic module image stitching method based on an infrared video. The method comprises the following steps that: S1: after a framing interval is set for the infrared video, extracting the infrared video as infrared images; S2: selecting a first infrared image and a second infrared image to be preprocessed, then, independently carrying out characteristic point detection, matching and screening the characteristic points of two images, finally, finishing the perspective transformation matrix of the second image, and realizing image stitching through image fusion; S3: carrying out next fusion on a new image and a third image, and carrying out the following steps in the same manner to finish the stitching of the whole infrared video; and S4: judging whether the stitched image inclines or not, and the stitched image inclines, carrying out inclination correction.
Description
technical field [0001] The invention relates to the field of image stitching, in particular to an infrared video-based photovoltaic module image stitching method. Background technique [0002] With the increasing shortage of global energy, photovoltaic power generation has become the focus of attention all over the world. With the rapid development of photovoltaic power stations, many unfavorable factors restrict the reliable and efficient operation of photovoltaic power stations. Among them, the hot spot phenomenon greatly reduces the power generation efficiency of photovoltaic modules, and in severe cases, it will burn out the modules and cause permanent damage to the modules. The common method is fault monitoring system and manual inspection to avoid the harm caused by hot spots, but the photovoltaic power station monitoring system cannot find hot spot faults in a timely and accurate manner, the efficiency of manual inspection is low, and the risk of inspection in harsh ...
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IPC IPC(8): G06T3/40
CPCG06T3/4038G06T2207/20221G06T2207/10048
Inventor 门洪吕来辰孙超翟文龙
Owner NORTHEAST DIANLI UNIVERSITY