Optimization of the laser irradiation pattern in a high frame rate integrated photoacoustic / ultrasound (PAUS) imaging system

2015 ◽  
Author(s):  
Soon Joon Yoon ◽  
Bao-Yu Hsieh ◽  
Chen-wei Wei ◽  
Thu-Mai Nguyen ◽  
Bastien Arnal ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Imaging System ◽  
Frame Rate ◽  
High Frame Rate

Design and construction of a high frame rate imaging system

2002 ◽  
Vol 111 (5) ◽  
pp. 2484
Author(s):  
Jing Wang ◽  
John L. Waugaman ◽  
Anjun Liu ◽  
Jian-yu Lu
Keyword(s):  
Imaging System ◽  
Frame Rate ◽  
High Frame Rate ◽  
Design And Construction

Large-scale scene real-time infrared simulation based on texture blending

2016 ◽  
Vol 9 (4) ◽  
pp. 406-415
Author(s):  
Yuye Wang ◽  
Guofeng Zhang ◽  
Xiaoguang Hu
Keyword(s):  
Large Scale ◽  
Infrared Imaging ◽  
Imaging System ◽  
Infrared Image ◽  
Frame Rate ◽  
Theoretical Research ◽  
Content Type ◽  
High Frame Rate ◽  
Specific Target ◽  
Infrared Imaging System

Purpose Infrared simulation plays an important role in small and affordable unmanned aerial vehicles. Its key and main goal is to get the infrared image of a specific target. Infrared physical model is established through a theoretical research, thus the temperature field is available. Then infrared image of a specific target can be simulated properly while taking atmosphere state and effect of infrared imaging system into account. For recent years, some research has been done in this field. Among them, the infrared simulation for large scale is still a key problem to be solved. In this passage, a method of classification based on texture blending is proposed and this method effectively solves the problem of classification of large number of images and increase the frame rate of large infrared scene rendering. The paper aims to discuss these issues. Design/methodology/approach Mosart Atmospheric Tool (MAT) is used first to calculate data of sun radiance, skyshine radiance, path radiance, temperatures of different material which is an offline process. Then, shader in OGRE does final calculation to get simulation result and keeps a high frame rate. Considering this, the authors convert data in MAT file into textures which can be easily handled by shader. In shader responding, radiance can be indexed by information of material, vertex normal, eye and sun. Adding the effect of infrared imaging system, the final radiance distribution is obtained. At last, the authors get infrared scene by converting radiance to grayscale. Findings In the fragment shader, fake infrared textures are used to look up temperature which can calculate radiance of itself and related radiance. Research limitations/implications The radiance is transferred into grayscale image while considering effect of infrared imaging system. Originality/value Simulation results show that a high frame rate can be reached while guaranteeing the fidelity.

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