| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an infrared thermogram having good adaptability to scenes. <P>SOLUTION: A digital signal processing system for an infrared thermogram includes an FPGA chip. The FPGA chip comprises: an image processing module which performs individual weight total sum processing for data of an initial histogram showing initial histogram curve distribution of an image in a current frame during a frame ineffective scanning period for removing a too bright pixel or a too dark pixel while transmitting gradation data of an image in a previous frame processed in a previous ineffective scanning period; and an image output module which is connected to the image processing module and performs a multistage polygonal line-type gradation off-set processing to gradation data of an image of a previous frame received by the image processing module during a frame effective scanning period so that gradation data with too high luminance and gradation data with too low luminance are subjected to off-set of which levels are differentiated and gradation data of an image in a previous frame after the multistage polygonal line-type gradation off-set processing. <P>COPYRIGHT: (C)2013,JPO&INPIT |
