Research On Synthetic Aperture Imaging Method Based On Confocal Illumination

As an important branch of computational imaging,synthetic aperture imaging technology can achieve effective detection of partially occluded targets by virtue of the virtual large-size aperture,which is one of the research hotspots of visual detection in recent years.At present,the commonly used synthetic aperture algorithm usually lacks accuracy and has great difficulty in stripping background information.Therefore,this paper proposes a fusion of confocal illumination and synthetic aperture imaging technology for the problem of post-foreground information stripping,which aims to reduce the reflected light and improves the contrast of light intensity between the focusing surface and the non-focusing surface.First,by analyzing two theoretical models of confocal synthetic aperture imaging,it is proposed to use a confocal illumination synthetic aperture imaging system based on mirror array to detect the scene,and the synthetic aperture imaging method based on mirror array is derived.Through the confocal illumination synthetic aperture imaging experiment based on the mirror array,it can achieve the effect of diminishing the foreground obscuration while highlighting the focal plane target object,and verify the applicability and method feasibility of the mirror array.Secondly,aiming at the problem that the light intensity of the target and the foreground occlusion object is not obvious in the confocal illumination imaging,this paper develops a target image enhancement algorithm based on mask illumination.The algorithm uses the depth information of the scene target distribution to identify the foreground and background in the image,design the mask image under the scene to modulate the light source,and enhance the difference in the illuminance received by the focus and non-focus targets.A clear reconstruction result is obtained by performing a synthetic aperture imaging algorithm on the multi-view image captured by modulating this light source.Finally,multiple sets of random masks and light source modulation confocal imaging simulation experiments based on scene depth are carried out.The results show that the method in this paper can effectively distinguish the intensity of reflected light from the focus and non-focus surfaces in the scene,remove the effect of foreground occlusion,and combine Synthetic aperture imaging refocusing method achieves high-quality reconstruction of partially occluded confocal illumination surface targets.