Research On Dynamic Pseudo-color Display Technology Of Infrared Polarization Imaging

Infrared polarization imaging technology enhances the images contrast according to the difference in polarization characteristics of objects,which can better distinguish between objects and backgrounds.However,the human eye is less sensitive to grayscale images than the color images,and it is necessary to perform pseudo color processing on the infrared polarized image.Aiming at the current situation that the pseudo color technology of infrared polarization image needs to perform scalar and non-dynamic display after the acquired polarization image is calculated and pseudo-color processing.This paper studies the dynamic pseudo-color display technology of infrared external polarization imaging.A dynamic pseudo-color display system for infrared polarization imaging is proposed based on the imaging principle of three-color CCD.By analyzing the principle of infrared polarization imaging,a 10.6?m sub-wavelength structure spectroscopic grating is used and select an appropriate infrared detector to build an infrared polarization imaging system.A dynamic pseudo-color processing scheme of infrared polarization imaging is proposed,which is simulated by MATLAB to verify the feasibility of the scheme.According to the real-time requirements of the system solution,the existing video processing system is analyzed and the DSP(Digital Signal Processing)chip of the TMS320DM642 of the C6000 series produced by TI is selected as the core processor to complete the schematic design of the hardware circuit of the subsequent pseudo-color processing system.According to the system requirements,determine the function of each module and the work-flow of the whole system.Use the C language to write and debug the main program of the system and the programs of each module in the development environment CCS(Code Composer Studio)of the DSP.Finally,static image acquisition experiments,video image acquisition and display experiments,dynamic pseudo color image processing and display experiments were performed.The experimental results show that the system can display the pseudo-color image in real time.Rotate the angle of the polarizing plate,the color of the pseudo-color image is different according to the angle,which verifies the real-time dynamics of the system.