Research on Methods and Influencing Factors of Obtaining Abnormal Temperature Region of Infrared Image Based on Indoor Experiment

Abstract

There is a temperature difference in the abnormal seepage area of a dam body. Infrared thermal imaging technology can effectively obtain temperature information and use infrared images to analyze the area of a dam seepage anomaly. Three indoor experiments were conducted to study the effects of the temperature of the abnormal seepage location, shooting distance, and shooting angle on the acquisition of infrared images. On this basis, the target area is obtained adopting a temperature threshold and image segmentation, and the calculation results are then compared with the actual area. Experimental results show that within a certain range, the temperature of the target area and the shooting distance and angle do not appreciably affect the calculation of the target area in the infrared image, and the temperature threshold and image segmentation methods can effectively obtain the abnormal seepage area in practical engineering applications.