摘要： 提出一种基于多线程技术的嵌入式三维数字成像DSP系统设计。该系统应用时间序列变频条纹数字投影原理，使用DSP/BIOS实时操作系统的配置工具实现多线程DSP应用软件，从而实现编码条纹投影、调制图像采集和相位解调的流水线处理过程，并且使用软件流水等方法对相位重建计算进行优化。实验表明，该DSP系统能实现快速的三维表面测量任务。
关键词:
嵌入式系统,
多线程,
三维数字成像,
数字信号处理器,
流水线
Abstract: An embedded 3-D digital imaging scheme with Digital Signal Processor(DSP) based on multi-thread technique is presented, which utilizes the principle of temporal sequential frequency-varying fringe digital projection. This approach uses the configuration tool of DSP/BIOS real-time operating system to implement a multi-thread DSP application software, so as to realize the pipeline processes of the fringe projection, data acquisition, and automatic fringe analysis. The software pipeline is also adopted for the calculation of phase-map rebuilding. Experimental results show that this scheme can implement fast 3-D surface measurement.
Key words:
embedded system,
multi-thread,
3-D digital imaging,
Digital Signal Processor(DSP),
pipeline
中图分类号:
王晓东;彭 翔;田劲东;关颖健. 基于多线程技术的嵌入式三维数字成像系统[J]. 计算机工程, 2008, 34(18): 21-23.
WANG Xiao-dong; PENG Xiang; TIAN Jin-dong; GUANG Ying-jian. Embedded 3-D Digital Imaging System Based on Multi-thread Technique[J]. Computer Engineering, 2008, 34(18): 21-23.