An Improved Image Reconstruction Method for a Chopperless Pyroelectric Infrared Image Sensor

Abstract

This paper presents an improved method of image reconstruction from the chopperless pyroelectric infrared image sensors. In the chopperless image sensor using chip shift operation, the output is a spatially differentiated image. The original IR light image can be reconstructed from the sensor output using the spatial integration. The improved method uses the chip shift operations to both x and y direction to cancel the stripe shape noise. This technique much improves the quality of the reconstructed image.