Three Dimensional Measurement using Color Structured Patterns and Imaging Spectrograph
نویسندگان
چکیده
In this paper, we propose a simultaneous measurement system of spectral reflectance and shape of an object with the use of color gray code structured patterns and an imaging spectrograph. Color and shape information are very important for us to recognize objects. Therefore, we have proposed an earlier system which is able to measure spectral reflectance and shape simultaneously by the imaging spectrograph. This system uses the gray code patterns to measure the shape of target. However, the measurement time for whole target was long, because this system measures only 1 line at a time. Therefore, a more effective measuring method is needed. This paper describes a measuring method using color gray code structured patterns. This proposed method uses the spectral characteristics of the projector effectively.
منابع مشابه
Use of three-dimensional ultrasonography of the eye and measurement of optical long axis in dog
This study was conducted to determine the use of three-dimensional ultrasonography (3DU) in ocular imaging of the dog and measuring of its optical axis. 12 healthy mixed-breed dogs including 6 males and 6 females were studied. 3DU of the eyes were done using a 5–12 MHz linear trapezoid transducer. 3DU of the eyes were evaluated and the normal optical long axis through a line between the cornea ...
متن کاملOne-dimensional Spectroscopic Measurement of Patterned Structures Using a Custom-built Spectral Imaging Ellipsometer
A novel spectral imaging ellipsometer based on a mono-axial power spectrograph has been developed for one-dimensional spectroscopic measurement of patterned structures. To obtain the imaging data of a patterned sample using ellipsometry can be realized by conventional ellipsometers with 2-dimesional (2D) scanning sample stage or 2D imaging ellipsometers with imaging optics. The former has major...
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 کاملSurface height retrieval based on fringe shifting of color-encoded structured light pattern.
A new method of fringe shifting for color structured pattern projection is presented for three-dimensional (3D) surface height measurement. Temporal encoding of color stripes is combined with locally spatial shifting of multiple fringes to realize image acquisition with a small number of pattern projections. Object topography is retrieved with high resolution by decoding the code word of each f...
متن کامل