Signal Generator Development Of Naked-eye 3D Product Quality Test

The testing technology of naked-eye 3D equipment is still immature,lacking effective test equipment,and there being no uniform assessment standard,which greatly restricts the development of the naked-eye 3D technology industry.Based on the optical principle of naked-eye 3D technology,an effective signal generator for naked-eye 3D quality and effect testing was developed in this paper.In addition,using this signal generator to complete the measurement of the stereo degree and visual characteristics of a product-level naked-eye 3D LCD,the stereo degree and the position distribution of independent viewing zone were obtained.The work completed in thesis research mainly includes:(1)Based on the study of the optical principle of naked-eye 3D technology by the research group,the theoretical connotation of the sub-screen and the independent viewing zone was reconfirmed.By comparing the advantages and disadvantages of the "stereo degree" and "3D crosstalk" test theories,we believe that the "stereo degree" method is more convincing,and its connotation and method are suitable for the evaluation of the naked eye 3D technology quality;(2)The development of the naked-eye 3D test signal generator was completed.A board-level system was designed based on FPGA,whose welding and debugging was completed.the logic of the USB transfer module,the naked-eye 3D LCD display driver module,the stereo degree test pattern signal generation module,the left-right format 3D image display module and other module was designed by using hardware description language.System debugging and experiments show that the developed naked-eye 3D test signal generator can correctly generate R,G,B test patterns for the three-dimensional test;(3)The interaction and control software of the upper computer is developed,which can select test mode by the upper computer,and can transmit command to the FPGA according to the USB protocol to complete the test pattern and color settings,making the stereo degree test and visual characteristic test more convenient;(4)the measurement of the stereo degree and visual characteristics of a product-level naked-eye 3D LCD was completed.By designing a precise positioning device for CMOS image sensor,combining with the developed naked-eye 3D test signal generator,the stereo degree and visual characteristic measurement experiments of a company's product-level naked-eye 3D LCD are completed,obtaining stereo degree value and position distribution of the independent viewing zone;Through simulations and experiments,it was verified that the developed signal generator of naked-eye 3D product quality test satisfies the test requirements of stereo degree and visual characteristics.Through actual product testing,it is shown that the quality of a naked-eye 3D LCD screen produced by a company fully meets the requirement.The developed signal generator of naked-eye 3D product quality test and the adopted stereo degree evaluation method can provide a quality inspection method for the naked-eye 3D technology industrialization.