Papers by Keyword: Three-Dimensional Imaging

Abstract: The so-called laser engraving technology, by using laser processing system and computer numerical control technology to complete the automated processing in the pavilion, and the pavilion is where this series of processing technology completed. The paper briefly describes the working principle and system assembly of three-dimensional laser engraving Pavilion, and then focus on the research and analysis of its shape size and assembly combined with the ergonomics, and conclude to a user-friendly portable 3D laser engraving pavilion wich suit the China market very well.

Abstract: In a variety of practical microscopic imaging applications, many industries require not only lateral resolution improvement but also axial resolution improvement. The resolution in optical microscopy is limited by diffraction and determined by the wavelength of the incident light and the numerical aperture (NA) of the objective lens. The diffraction limit is mathematically described by a point spread function in the imaging system, and three-dimensional (3D) point spread functions describe both the lateral and axial resolutions. Thus, it is useful to focus on exceeding this limit and improving the resolution of optical imaging by the spatial control of structured illumination. Structured illumination microscopy is a familiar technique to improve resolution in fluorescent imaging, and it is expected to be applied to industrial applications. Microscopic imaging is convenient, non-destructive, and has a high-throughput performance and compatibility with a number of applications. However, the spatial resolution of conventional light microscopy is limited to wavelength scale and the depth of field is shallow; hence, it is difficult to obtain detailed 3D spatial data of the object to be measured. Here, we propose a new technique for generating and controlling wide-field 3D structured illumination. The technique, based on the 3D interference of multiple laser beams, provides lateral and axial resolution improvement, and a wide 3D field of view. The spatial configuration of the beams was theoretically examined and the optimal incident angle of the multiple beams was confirmed. Numerical simulations using the finite difference time domain (FDTD) method were carried out and confirmed the generation of 3D structured illumination and spatial control of the illumination by using the phase shift of incident beams.

Abstract: One kind of scanning distance-imaging system based on time-of-flight measurement is reported in this paper. With Nd:YAG Laser for light source, oscillating mirror for light beam scanning, SR620 for fly time measuring, the target tridimensional image is traced out through the software. This prototype has great distance-resolution as 15cm, angle-resolution as 1mrad ×1mrad, scan scale as 10×10°, and the detective range as 1km. The mathematical model of sampling, data mapping and coordinate transform are discussed, which used for system design. And the final range images are also given as follow

Abstract: This paper introduces a kind of three-dimensional human hairstyle database system based on structure optical measurement. The human body three-dimensional data, hair extraction of three-dimensional data, three-dimensional body hairstyle design process; real-time three-dimensional imaging of hairstyle and other issues are discussed in detail.

Abstract: This paper has explored the design of three-dimensional imaging sonar software and its application to the hardware platform. In the process of designing, the software has been optimized in view of characteristics of the hardware structures and calculation of the TMS320C6416, and the specific optimization methods and effects have also been presented. It turns out that the effect of software optimization is obvious and the working system stable and reliable.

Abstract: A novel nonlinear confocal microscopic imaging system based on Raman induced Kerr effect spectroscopy (RIKES) is presented in this paper. The three-dimensional (3-D) microscopic imaging theory is derived with the Fourier imaging theory and nonlinear optical principle. The impact of RIKES on the spatial resolution and imaging properties of confocal microscopic imaging system has been analyzed in detail by the imaging theory. It’s proved that the RIKES nonlinear microscopic imaging system can effectively improve the imaging contrast and provide more characteristic information on Raman spectrum and optical nonlinear Kerr effect, thus greatly improving the imaging quality of confocal microscopic imaging system. It’s shown that the spatial resolution of RIKES confocal microscopic imaging system is higher than that of two-photon confocal microscopic imaging system.