Blind color isolation for color-channel-based fringe pattern profilometry using digital projection.
نویسندگان
چکیده
We present an algorithm for estimating the color demixing matrix based on the color fringe patterns captured from the reference plane or the surface of the object. The advantage of this algorithm is that it is a blind approach to calculating the demixing matrix in the sense that no extra images are required for color calibration before performing profile measurement. Simulation and experimental results convince us that the proposed algorithm can significantly reduce the influence of the color cross talk and at the same time improve the measurement accuracy of the color-channel-based phase-shifting profilometry.
منابع مشابه
Three-dimensional measurement of object surfaces with complex shape and color distribution based on projection of color fringe patterns.
A challenging issue associated with three-dimensional (3D) fringe patterns profilometry (FPP) is the unwrapping of phase maps resulting from color object surfaces. This paper proposes a new color-projection-based 3D FPP, making use of the three primary color channels [i.e., red, green, and blue (RGB)] associated with digital projectors. One channel (e.g., red) is used for projecting sinusoidal ...
متن کاملSingle-shot absolute 3D shape measurement with Fourier transform profilometry.
Fourier transform profilometry (FTP) is one of the frequently adopted three-dimensional (3D) shape measurement methods due to its ability to recover single-shot 3D shapes, yet it is challenging to retrieve the absolute phase map solely from one single grayscale fringe image. This paper presents a computational framework that overcomes this limitation of FTP with digital fringe projection (DFP)....
متن کاملColor N-ary Gray Code for 3-d Shape Measurement
A fringe projection method that uses a novel color N-ary Gray code has been developed for high-speed 3-D shape measurement. In this method, more than two graylevels in each color channel are used to create a colorcoded pattern. The code is designed to be self-normalizing so that an adaptive threshold method can be used to reduce decoding error and therefore increase measurement resolution and a...
متن کاملA Single-Shot and Real-Time 3D Imaging Technique for Facial Motion Capture Based on Triple-Frequency Color Fringe Projection
Fast and high-accuracy 3D imaging is playing an important role in scanning human face sunder dynamical change. This paper presents a single-shot technique for real-time surface profiling and texture retrieving of human face. In this technique, three fringe patterns with a carrier frequency ratio of 1:3:9 are encoded in the red (R), green (G) and blue (B) channels of a color fringe pattern and p...
متن کاملAutomatic Full-Field 3-D Profilometry Using White Light Confocal Microscopy with DMD-based Fringe Projection
A new full-field 3-D micro surface profilometer using digital micromirror device (DMD)-based fringe projection strategy and confocal principle is presented in the article. In viewing the fact that conventional laser confocal measurement method not only easily encounters undesired irregular scattering problems, but also lack scanning efficiency due to its single-point type measurement, the newly...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of the Optical Society of America. A, Optics, image science, and vision
دوره 24 8 شماره
صفحات -
تاریخ انتشار 2007