关键词: 红外探测, 高效运算, 背景预测, 分离卷积

Abstract:

Background prediction in infrared is a classical method for small and dim target detection. Taking account of the convolution's time-consuming property, an efficient method for infrared image background prediction based on CUDA (Compute Unified Device Architecture) is proposed. By considering the feature of CUDA and analyzing the process of background prediction, it is re-realized. Using the framework of CUDA and taking advantage of the powerful parallel computing ability of GPU (Graphic Processing Unit), background prediction from infrared images is rapidly and efficiently completed. For further raising the efficiency of the method, the inseparable convolution matrix used by background prediction is broken up into several separable matrices, where a general method for separating the convolution matrix is presented. Applying this method to actual infrared image's background prediction, the computation efficiency is raised more than 130 times compared with the traditional method based on CPU.

Key words: infrared detection, high performance computing, background prediction, separable convolution