Global calibration method and device of rigid rod of multisensor vision measurement system
A visual measurement, multi-sensor technology, applied in measurement devices, closed-circuit television systems, optical devices, etc., can solve the problems of processing and use of super-large targets, which are difficult and unsuitable, and achieve high global calibration accuracy and a wide range of applications. Effect
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[0105] In this embodiment, the experiment uses two Patriot digital cameras equipped with 23mm industrial lenses, which are called visual sensor 1 and visual sensor 2, respectively. The resolution of the two vision sensors is 1280 pixels×1024 pixels, the working distance is about 750mm, and the field of view range is 150mm×120mm.
[0106] Using the method introduced by ZHANG Z Y. in the article "A flexible new technique for camera calibration[J].IEEE Trans.on Pattern Analysis and Machine Intelligence", complete the internal parameter calibration of visual sensor 1, visual sensor 2, and visual sensor 1. , The internal calibration results of the visual sensor 2 are shown in Table 1.
[0107] Table 1
[0108]
[0109] Figure 5 Are the images of the one-dimensional target 1 and the one-dimensional target 2 taken by the vision sensor 1 and the vision sensor 2; where, Figure 5 (a) is an image of one-dimensional target 1 taken by vision sensor 1, Figure 5 (b) is the one...
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