Correlated Imaging Practical Research

Correlation imaging,with strong anti-interference ability and high resolution,is still a hotspot in imaging field after more than 20 years of development.At present,real-time imaging is one of the directions in the research of relevance imaging.This paper makes a preliminary study on the practical subject of related imaging.The main research contents are as follows:(1)Based on the research of the basic principle of correlation imaging,the computational correlation imaging experimental system based on a data acquisition card was designed and constructed.(2)With the computational correlation imaging experimental system as a platform,the image quality and imaging speed,specially including the sampling data volume and the calculation amount,were studied.The related experiments were completed and the experimental results were analyzed.(3)The scheme with less amount of sampling data.including using Hadamard the matrix differential projection method and the comparison of the projection methods of the uniform distribution random element 0,1,was studied to get the better image quality.Experimental results show that the Hadamard matrix differential projection way,in the case of a few sampling times,can effectively reduce the amount of sampling data correlation imaging and displays far higher imaging effect than the projection method of the uniform distribution random element 0,1.(4)The scheme researches were completed by changing the light field projection method to reduce amount of calculation to get faster imaging scheme.specially including:?The difference of the calculation amount of one dimensional linear light projection and two-dimensional shape light field projection was analyzed.The analysis results show that line projection method for surface projection method has obvious advantages on calculation.With the improvement of the imaging resolution,the line projection method's advantage is more obvious.?The difference of the imaging effect of one dimensional linear light projection and two-dimensional shape light field projection was experimentally analyzed.The experimental results show that the imaging effects are similar in the case of same sampling frequency and same imaging resolution.(5)A new correlation imaging experimental system was proposaled based on a Vertical Cavity Surface Emitting Laser(VCSEL)array.The advantages of VCSEL array as the light source of correlation imaging experimental system was proved in theory.