Camera system and measurement method for large-scale measurement

Abstract

The present invention discloses a camera system facing large-size measurement. The system comprises a platform pedestal, a first camera measurement device, a second camera measurement device, a firstlinear drive device, a second linear drive device and a control device, the first camera measurement device and the second camera measurement device are slidingly installed on the platform pedestal, the first linear drive device and the second linear drive device are configured to respectively drive the first camera measurement device and the second camera measurement device to slide on the platform pedestal, and the control device is connected with the control ends of the first linear drive device and the second linear drive device to control the sliding displacement amount of the first camera measurement device and the second camera measurement device. The camera system facing large-size measurement only employs two cameras to replace functions of a plurality of cameras in a traditionalmethod through precious control of the posture angle and the space translation offset and employs the two cameras to achieve shooting of a large visual field so as to reduce the cost. The present invention further discloses a method for measurement of a large-size object by the camera system.

Description

technical field [0001] The invention belongs to the technical field of machine vision three-dimensional measurement, and in particular relates to a camera work platform and a measurement method for measuring large-sized objects. Background technique [0002] At present, when performing three-dimensional measurement on a scene with a large field of view or a large-sized object, two cameras generally cannot guarantee the measurement range and measurement accuracy at the same time, so multiple cameras are often used to collect the scene at different viewpoints. The principle is that if the camera and adjacent cameras can form an effective field of view, then when measuring objects within the measurement domain, combine every two cameras with a common field of view to measure the entire scene. However, when the scene or the object to be measured is long, it is necessary to use more cameras to form multiple binocular stereo vision cameras in pairs according to certain rules and i...

AI Technical Summary

Problems solved by technology

However, when the scene or the object to be measured is long, it is necessary to use more cameras to form multiple binocular stereo vision cameras in pairs according to certain rules and install them on the measurement work platform. Due to the large number of cameras required, the entire measurement equipment Large-scale calibration framework and calibrator are required, as well as errors caused by calibration algorithms, image feature extraction accuracy, lens distortion, environmental noise, etc. in traditional calibration methods, as well as the gradual cumulative propagation of errors, which makes the cost of measurement equipment high and the calibration process complicated. Not accurate enough

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