A mu c-SI:H P-I-N imager for 2-D pattern recognition

摘要

A TCO/ mu c-p-i-n Si:H/Al imager is presented and analyszed. The mu c-p-i-n Si:H photodiode acts as a sensing element. Contacts are used as n electrical interface. The image is acquired by a scanout process. Sampling is performed on a rectangular grid, and the read-out of the photogenerated charges is achieved by measuring simultaneously both transverse photovoltages at the coplanar electrodes. The image representation in gray-tones is obtained by using low level processing algorithms. Basic image processing algorithms are developed for image enhancement and restoration.