Estimating degree of deterioration of road surface
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United States of America Patent
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Jul 12, 2016
Grant Date -
Feb 25, 2016
app pub date -
Jun 11, 2015
filing date -
Aug 19, 2014
priority date (Note) -
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Abstract
Image analysis methods for quantifying cracks in a road surface from a road surface image recorded as a digital image, and quantify the degree of deterioration of the road surface. An object image is prepared, in which its region is divided into a plurality of pixels and the grayscale value of each of the pixels is inverted. An image analysis technique may include, on the basis of an image obtained by applying a Gabor filter to a multiple resolution image, containing images with multiple scales obtained by scaling, cracks in a road surface can be detected and distinguished from white lines and characters on the road surface. It is possible to solve various problems, in which visually detected cracks do not appear as edges and edges of white lines and characters on the road surface are detected as line segment vectors.
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