Refocusing-based signal-to-noise ratio enhancement method for dim targets in infrared array cameras

At present, the detection of dim targets has become an important research direction in the field of infrared imaging, as the traditional single-lens dim target detection imaging system is limited by cost, size, and performance, which cannot support the requirements of many targets detection tasks. With the development of scientific and technological research, infrared array cameras have achieved improved detection capabilities through more imaging units, which are expected to break through the shortcomings and limitations of traditional single-lens imaging systems. To achieve this goal, this paper proposes a refocusing-based infrared array camera dim target signal-to-noise ratio enhancement method, which can effectively improve the detection distance of the imaging system for dim targets while achieving the improvement of the signal-to-noise ratio. Through experimental verification, the method achieves the expected results and can be applied to relevant subsequent processing tasks.