High-speed 3D imaging with digital fringe projection techniques

2021 ◽  
Author(s):  
Song Zhang
Keyword(s):  
High Speed ◽  
3D Imaging ◽  
Fringe Projection ◽  
Digital Fringe Projection ◽  
Projection Techniques

High-Speed, High-Resolution 3D Imaging Using Projector Defocusing

2011 ◽  
pp. 121-140
Author(s):  
Song Zhang ◽  
Yuanzheng Gong
Keyword(s):  
High Speed ◽  
3D Imaging ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Projection System ◽  
Digital Fringe Projection ◽  
System Nonlinearity ◽  
Projection Techniques ◽  
Fringe Patterns ◽  
3D Scene

With the advance of software and hardware, three-dimensional (3D) scene digitization becomes increasingly important. Over the years, numerous 3D imaging techniques have been developed. Among these techniques, the methods based on analyzing sinusoidal structured (fringe) patterns stand out due to their achievable speed and resolution. With the development of digital video display technologies, digital fringe projection techniques emerge as a mainstream for 3D imaging. However, developing such a system is not easy especially when an off-the-shelf projector is used. The major challenging problems are: (1) the projection system nonlinearity; (2) the precise synchronization requirement; and (3) the projection system speed limit. This chapter will present an alternative route for 3D imaging while reducing these problems. The fundamentals of the proposed technique will be introduced, the analytical and experimental results will be shown, and its advantages and limitations will be addressed.

A New Three-Dimensional Profilometer for Surface Profile Measurement Using Digital Fringe Projection and Phase Shifting

2005 ◽  
Vol 295-296 ◽  
pp. 471-476
Author(s):  
Liang Chia Chen ◽  
S.H. Tsai ◽  
Kuang Chao Fan
Keyword(s):  
High Speed ◽  
Structured Light ◽  
Three Dimensional ◽  
Surface Profile ◽  
Phase Shifting ◽  
Fringe Projection ◽  
Surface Measurement ◽  
Profile Measurement ◽  
Digital Fringe Projection ◽  
Fringe Patterns

The development of a three-dimensional surface profilometer using digital fringe projection technology and phase-shifting principle is presented. Accurate and high-speed three-dimensional profile measurement plays a key role in determining the success of process automation and productivity. By integrating a digital micromirror device (DMD) with the developed system, exclusive advantages in projecting flexible and accurate structured-light patterns onto the object surface to be measured can be obtained. Furthermore, the developed system consists of a specially designed micro-projecting optical unit for generating flexibly optimal structured-light to accommodate requirements in terms of measurement range and resolution. Its wide angle image detection design also improves measurement resolution for detecting deformed fringe patterns. This resolves the problem in capturing effective deformed fringe patterns for phase shifting, especially when a coaxial optical layout of a stereomicroscope is employed. Experimental results verified that the maximum error was within a reasonable range of the measured depth. The developed system and the method can provide a useful and effective tool for 3D full field surface measurement ranging from µm up to cm scale.

Review of 3D Shape Measurement Using Fringe Projection Techniques

2012 ◽  
Vol 503-504 ◽  
pp. 1437-1440 ◽  
Author(s):  
Ming Rang Yu ◽  
Ying Jie Zhang ◽  
Ding Zhang
Keyword(s):  
High Speed ◽  
Optical Measurement ◽  
Projection Methods ◽  
Fringe Projection ◽  
Full Field ◽  
3D Shape ◽  
3D Shape Measurement ◽  
Full Field Measurement ◽  
Cad Cam ◽  
Projection Techniques

Optical measurement has been widely used in many fields of science and engineering, such as CAD/CAM, machine vision, quality inspection, reverse engineering, etc, due to its properties of non-contact and high speed. Fringe projection methods have caused much more attentions in full field measurement and insensitive to the change of the objects’ reflectivity. This paper reviews state-of-the art progresses in the 3D shape measuring methods using fringe projection techniques. A comparison of the existing methods is performed with their advantages and drawbacks also are pointed out.

3D Shape Measurement and Reconstruction Using Fringe Projection

2014 ◽  
Vol 487 ◽  
pp. 572-575
Author(s):  
Zaliman Sauli ◽  
Vithyacharan Retnasamy ◽  
Nor Shakirina Nadzri ◽  
Christopher John Veriven
Keyword(s):  
High Speed ◽  
Phase Shifting ◽  
Fringe Projection ◽  
Good Precision ◽  
Projection Technique ◽  
Object A ◽  
3D Shape Measurement ◽  
Digital Fringe Projection ◽  
Automated Optical Inspection ◽  
Surface Dimension

Digital fringe projection technique using phase shifting method has been studied extensively for generatingthree dimensional (3D) surface information. The aim of this paper is to develop a simple automated optical inspection (AOI) system using fringe projection technique to capture image of an object. A three step phase shifting is used to generate the saw tooth image to retrieve the information of the pixel coordinate and surface dimension. The calibration of the camera and projector is observed to contribute a great significant on the measurement accuracy. The developed system is capable to measure the object surface dimension and perform the 3D reconstruction with high speed and good precision.

Sign in / Sign up

Export Citation Format

Share Document