实现光学图像边缘增强的激光散斑离焦法

Enhanced optical image edge with laser speckle out-of-focus method

激光散斑干涉法是近代光学的一项新技术。对于低对比度的图像 ,由于边缘部分模糊 ,强度变化不大而难以分辩。介绍了激光散斑干涉图像离焦法 ,并将其应用于光学图像的微分滤波 ,增强图像的边缘 。

Laser speckle interferometry is a new technique in latter-day optics. Image for low contrast is difficult to be distinguished, as image edge is dimness. The principle and method of laser speckle interference image out-of-focus are discussed. Image edge is enhanced by optical image differential coefficient filter and the optical image with enhancde edge and contrast are got.