Accurate identification of saturated pixels for high dynamic range measurement

作者：Long Yunfei; Wang Shuaijun; Wu Wei; Liu Kai^*

来源：Optical Engineering, 2015, 54(4): 043106.

DOI：10.1117/1.OE.54.4.043106

• 3-D surface measurement
• camera saturation
• structured light
• phase measuring profilometry

Measuring surfaces with high reflectivity variation via structured light illumination requires accurately identifying saturated pixels in captured images. However, conventional methods simply determine saturation by intensities, which is susceptible to a camera blurring effect and random noise. To solve this problem, we present a method that uses the magnitude of a nonprincipal frequency component to identify saturated pixels. Experimental results demonstrate that 1) higher accuracy of three-dimensional reconstruction can be achieved and 2) high-contrast surfaces can be accurately reconstructed.

• 出版日期2015-4
• 单位四川大学