A high-gray-scale infrared scene generation method based on superimposed imaging of six sets of dmd

Abstract

The invention discloses a high-gray-level infrared scene generation method of six sets of DMD stack imaging and a system thereof. According to a specification abstract drawing, an image with a 16383 gray level and a 200HZ gray frame frequency is generated during modeling; data is transmitted to an image processing module as a DVI transmission mode and image data is merged as a 2*2 pixel matrix; and then 4 average operation is performed on the merged data, an average number carries out residue calculating on 3125, a remainder carries out residue calculating on 625, the remainder carries out residue calculating on 125, the remainder carries out residue calculating on 25, the remainder carries out residue calculating on 5 and the remainder carries out residue calculating on 1. Through six times of residue calculating, six quotients corresponding to the number of overturn lenses in 2*2 pixel lenses in the six sets of DMDs are acquired, and DMD energy corresponding to the quotient acquired through first stage residue calculating on an arbitrary primary optical axis vertical plane is five times of DMD energy corresponding to the quotient acquired through second stage residue calculating. The method and the system of the invention can be used for developing an infrared scene simulator based on the DMD of the high gray level at any integration time in a frame period scope.

Description

technical field [0001] The invention belongs to the technical field of infrared sensors, and in particular relates to a method and system for generating high-gray-scale infrared scenes using six sets of DMD superimposed imaging for semi-physical simulation testing of infrared imaging sensor function and accuracy under indoor conditions. Background technique [0002] Infrared imaging sensors are widely used in astronomy, space science, night observation, infrared imaging guidance, search, tracking, warning and scientific experiments. In order to test the performance of infrared imaging sensors used in satellites, infrared imaging seekers, infrared search and tracking systems, and infrared warning systems, it is necessary to provide a certain infrared scene matching the operating conditions in the laboratory as an input image, so that The infrared imaging sensor produces a certain output and conducts a semi-physical simulation test. Digital array devices (Digital Micromirror ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the integration time of a single set of DMD is fixed and the contrast is not strong, the present invention provides an infrared scene generation method in which six sets of DMD display images are superimposed on the object surface, which can be used for a DMD infrared image simulator with high contrast in a short integration time development

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