Infrared and low-light-level image processing in color night vision technology

Abstract

In this paper, infrared and low light level image processing theories and techniques in color night vision system are studied in detail. The characteristic of IR and low light level image is described and the significance of IR and low light level image processing in color night vision technology is pointed out. On the bases of these, IR and low light level image processing theories and techniques in color night vision system, including geometric calibration by control point method, image zoom by gray-level interpolation, IR and low light level image noise suppression techniques and gray-level transform by look-up table (LUT) processing, are presented. The theory models and calculating methods of every above image processing technique is described. Through IR and low light level image processing, the quality of the night vision images is improved significantly and the color night vision system is developed successfully.