场聚焦电容成像系统的图像重构

Imaging principle for the field-focusing capacitance imaging system has been investigated in this paper, which indicated that the main factor affecting the image quality is the non-ideal field focusing effect. Therefore, point spread function is proposed to characterize the blurring impact of the measurement system on the images. Based on the optics image restoration mechanism, deconvolution based algorithm is introduced to reconstruct/restore the image. Simulation and experimental results show that the proposed deconvolution method can suppress image blurring phenomenon, and obtain better quality images, thus shows the deconvolution based reconstruction algorithm is an effective one for field-focusing capacitance imaging system.