Abstract
In recent years, the three-dimensional (3D) measurement method is used in various fields. However, the conventional 3D measurement method has various problems such as complicated pre-set, slow processing and high cost. In this study, in order to achieve the 3D measurement with high speed and low cost, easy preset, we propose the 3D measurement method with a two-dimensional Position Sensitive Device (2D PSD) using a pair of light sources.
Highlights
The 3D measurement method is used in various fields such as games, CG creation, structure research, cultural heritage, ruins investigation, robot vision and medical in recent years
The passive measurement is divided into the depth from focus method and the multi camera stereo method
We proposed the new 3D measurement method with a 2D PSD using a pair of light sources
Summary
The 3D measurement method is used in various fields such as games, CG creation, structure research, cultural heritage, ruins investigation, robot vision and medical in recent years. The passive measurement is divided into the depth from focus method and the multi camera stereo method. The multi camera stereo method is the 3D measurement method using multiple cameras, and calculates the 3D position based on the principle of triangulation. The image processing of multi camera stereo method is time consuming. Light radar method is 3D measurement method using the time difference until the reflecting light reflected by the object is returned to the camera from irradiating. Active stereo method is the 3D measurement method using the information of the irradiating light consists of the camera and the unit for irradiating light to the object. Active stereo method takes time for arithmetic processing because this method utilizes the pattern change of the light irradiated on the object. The 3D coordinate of the light source is calculated by using the 2D information from the 2D PSD
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