To detect operation of transmission lines

a method of digital image detection fuses image mosaic and Hough transform is proposed. The measured images are processed by gray level normalization

with the help of MATLAB

which weakens the brightness conversion caused by lighting viewpoints. An adaptive non-maximum suppression algorithm is used to screen and extract feature corner points

and seed points region growth and matching are carried out. Hough transform is used to extract the target transmission lines in the mosaic images and judge the running states of the transmission cables. Experimental results show that this algorithm can effectively increase the proportion of the target cable in the image

with strong anti-interference ability and high operation efficiency

and has meaning of engineering practice.