Abstract

In the field of reverse engineering, high-precision point cloud data is a guarantee of quality and accuracy for three-dimensional (3D) reconstruction model. Aiming to decrease the measuring error of the laser scanning system, an error compensation method for the original point cloud data is proposed. Firstly, the data error is obtained through the comparison between CAD model and original data. Taking the original point cloud data and error data as learning samples, the training work for the BP network is then completed, and the error compensation model is established. Finally, the reliability of the error compensation model is verified by the samples of testing data. With the help of BP compensation model, any original point data error from the laser scanning system can be compensated. And, the results of experiments show the practicality of the method.

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