Distance measuring method for power line

• Main Authors: ZHENG SHUNYI, ZHANG JIN, GONG JIANGANG, CHEN FANGMING, HUANG RONGYONG, JI ZHENG
• Format: Patent
• Language: Chinese; English
• Published: 02.12.2009
• Subjects: GYROSCOPIC INSTRUMENTS; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention discloses a distance measuring method for a power line, which comprises the following steps: (1) acquiring sequence images of the power line and a crossover object under the power line to form a stereoscopic image pair; (2) extracting an image space power line in the stereoscopic image pair; (3) determining spatial coordinates of a power line point; (4) using a plumb line track method to search whether the crossover object exists in a certain distance under the power line point, and calculating the coordinates of the crossover object when the crossover object exits; and (5) according to the coordinates of the crossover object and the power line point, calculating the vertical distance of the crossover object and the power line point. The method can accurately identify the power line in the image and measure the spatial coordinates of the power line, automatically judge whether the crossover object exists in the safe distance under the power line, measure the vertical distance between the power l