Physics Seamless Cloning Between Infrared Target And Background

Infrared simulation technology has been widely used in military and civilian fields,and is particularly important for military confrontation and defense security.Because of its computer-based simulation technology,experiments can be conducted without considering stubborn weather and huge human and material resources.Therefore,both developed and developing countries have been concerned about the development of this field.Among them,the research on infrared high-speed moving targets and backgrounds in infrared simulation and synthesis technology is particularly fierce,because the use of radiation for infrared detection has been currently the primary means of targets which are detected,if the target in the air can be quickly and accurately locked,for defense The value of security and military confrontation is immeasurable.For the target missile in the air,the missile tail flame can be as the main radiation.Therefore,the tail flame in a complex background that how to be quickly detected is a research topic of great significance.Therefore,based on the radiation characteristics of the tail flame target and the background,the overlapping technique of the tail flame target and the background is researched in this thesis,and the necessary external influence on the radiation change of the tail flame during the superposition process has been considered.It is hoped that the future detection of air targets can be contributed with the overlay simulation of infrared targets and backgrounds.The specific work is as follows:（1）Since the superposition algorithms at the present stage have been divided into three classes which based on alpha superposition,gradient-based superposition and multi-resolution superposition^[51],the representative image superposition algorithms are first studied:alpha synthesis algorithm,LP pyramid algorithm,Poisson editing algorithm,the scene applicability of the algorithm is verified with some experiments,and the algorithm prototype that is suitable for the background and target of this paper has been selected.（2）The atmospheric transmission model has been analyzed,and the algorithm has been researched to solve the radiation transmission equation.Then,based on the atmospheric transmission model,the generation process of the infrared background radiance needed for this overlay is been studied:calculation of background radiance,multi-thread reading the various parameters required for calculating the radiance,the software model for the calculation of the infrared background radiance,and the results are displayed.（3）The calculation method of the radiance of the tail flame target has been briefly introduced.Then,the existing radiance of the tail flame has been researched,and the first is to subdivide the grid of the data.Then the irradiance of the tail flame with irregular distribution has been studied,also the IDW interpolation method has been adopted,and the infrared image of the tail flame target has finally been displayed.（4）The Poisson editing method to superimpose background and tail flame targets has been used,the influence of atmospheric transport and cloud albedo during the superposition process of the tail flame target has been taken into account,and different stages have been superimposed respectively.The changes in the different stages of the tail flame have been reflected which as the purpose.When the color difference between the target to be inlaid and the background to be inlaid is too large,the loss of detail has been resulted with direct Poisson superposition.Therefore,the Poisson editor’s defect is improved,and the Poisson details of the texture are proposed.The target has been divided into two layers with the editing method:the basic layer and the detail layer through bilateral texture filtering.The purpose is that the overlay algorithm can be used with more suitable for the superposition of these scenes.Then the quality of the improved Poisson editing algorithm is evaluated in three aspects.The advantages of the improved Poisson editing have been shown into the results of the evaluation.