›› 2010, Vol. 23 ›› Issue (7): 21-24.

• 论文 • 上一篇    下一篇



  1. (西安电子科技大学 技术物理学院,陕西 西安710071)
  • 出版日期:2010-07-15 发布日期:2010-09-09
  • 通讯作者: 孙国强(1981-),男,硕士研究生。研究方向:实时图像处理。白绳武(1984-),男,硕士研究生。研究方向:实时图像处理。
  • 作者简介:孙国强(1981-),男,硕士研究生。研究方向:实时图像处理。白绳武(1984-),男,硕士研究生。研究方向:实时图像处理。

Study of the Image AutoFocusing System Based on FPGA

Sun Guoqiang,Bai Shengwu   

  1. (School of Technical Physics,Xidian University,Xian 710071,China)
  • Online:2010-07-15 Published:2010-09-09



关键词: 自动调焦, 图像处理, 调焦操作


The autofocusing based on image technology is used to accomplishes image pretreatment,definition evaluation and judges the imaging state from the current image quality.The system can adjust focus distance correctly supervised by imaging state.The key technology is the image quality analysis function.Aiming at the enormous computation and high complexity of the autofocusing algorithm,the preprocessing method for combining the median filter with the linear transform of gray value,the pipelining structure,the “pingpong” working mode,the sharing processor of double butterfly shape and the base2FFT algorithm are presented.The research indicates that the autofocusing algorithm resolves the speed bottleneck of complex control systems.

Key words: autofocusing;image processing;focusing operation


  • TP39141