Bidirectional iteration bilateral filtering method for asphalt images obtained through UAV-borne infrared imaging device
A technology of asphalt image and bilateral filtering, applied in the field of image processing, can solve the problems that bilateral filtering is difficult to process in real time, the calculation time is unacceptable, and the filtering effect is not good.
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[0033] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0034] see figure 1 , the two-way iterative bilateral filtering method for asphalt images acquired by UAV-borne infrared, is improved according to the existing one-dimensional iterative formula, and the idea of bilateral filtering is introduced, and the range similarity coefficient is introduced into the iterative formula. In the Lab color space, using this The formula filters the image in two directions.
[0035] Step 1: Obtain an initial infrared asphalt image.
[0036] UAVs equipped with infrared thermal imaging equipment are used to collect images of asphalt pavement during construction. The collected original infrared asphalt images contain a lot of noise, and the size of the original infrared asphalt images to be processed is 544*486.
[0037] Step 2: Convert the original infrared pitch image in the RGB color space to the Lab color space, and the image chang...
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