Ultra-Fast Detection of Loosened Bolts Based on Binary Image Processing- CrimsonPublishers
In
this paper, we offer a new method for detecting tight or loosened bolts based
on image processing. The proposed method is independent of bolt appearances,
and no height detector is needed. Firstly, several pictures are taken from the
bolts in tight and different loosened states for training the system. After the
training step, the status of the study bolts is processed by MATLAB software.
By using image processing techniques including noise removal, Circular Hough
Transform (CHT), transformation of colored images to grayscale, Otsu
thresholding, binary complement of Otsu thresholding, enhancement of images with
dilation structure element, and after calculating the area of the bolts, the
decision about the states of the bolts can be accurately determined based on
the number of zero pixels. The proposed method has the advantages of the low
calculation process, very fast, and high precision response.
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