A fully automatic multi-mode 3D color measurement method based on multi-view

Abstract

The invention discloses a multi-view-based full-automatic multi-modal three-dimensional color measurement method. The method comprises the following steps: firstly performing phase-shift profilometryby adopting a three-step phase-shift method, and performing Fourier profilometry by utilizing the second fringe in the three-step phase-shift and adding an all-white graph, and unwrapping phase basedon a stereo phase unwrapping method; and then judging a movement region of a measured object pixel by pixel through the change of two adjacent moment phases; acquiring the high-precision profile by utilizing the phase-shift profilometry when measuring a static object; and effectively extracting the motion object profile by utilizing the Fourier profilometry when measuring a dynamic object. The advantages of the Fourier profilometry and the phase-shift profilometry can be sufficiently utilized under a complex scene (the scene contains the moving object and the static object or the object is inmoving and static states at the same time), thereby obtaining a reconstruction result with better precision.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional imaging, in particular to a fully automatic multi-mode three-dimensional color measurement method based on multi-view angles. Background technique [0002] High-precision, non-contact 3D imaging technology has a wide range of applications in industrial inspection, medical treatment, human-computer interaction, security, etc. In the past few decades, many different 3D surface measurement methods have been proposed, such as stereo vision method, time-of-flight method, fringe projection method, etc. Among them, the fringe projection method has become one of the most important three-dimensional surface measurement technologies due to its high precision and easy implementation. With the development of electronic projection equipment, high-precision, high-speed real-time three-dimensional imaging systems are also possible. The two main methods in fringe projection technology are phase-shift p...

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Problems solved by technology

[0005] Although the above-mentioned methods have improved the dynamic measurement capability of phase-shift profilometry and the accuracy of Fourier profilometry to a certain extent, in complex scenes (the scene contains both moving objects and stationary objects, or the same object presents different It is still difficult to obtain a high-accuracy reconstruction result under the motion feature)

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