Research On Distance Measurement Technology Of Driving Recorders

In the imaging detection,there is always a technical problem,that is the distance measuring monocular image,and in the military,civilian has great use value.In the video imaging,based on the segmentation of the image,with the change of the target object for the process,thus to find the target distance.As the analysis object,this paper is to video image,the successive frames of image contrast,in object edge blur and imaging area on the difference between the two characteristics of the monocular image distance measurement technology.This article participated in the relevant single visual distance in actual project,the ranging system has a relatively deep understanding,on the basis of the combination of some existing technologies,the main research content is as follows:Ranging system is studied in the overall architecture and the current of single visual distance system research at home and abroad,this paper introduces the monocular image ranging technology of related concepts,and introduces the principle of defocusing distance respectively,point spread function(PSF),the advantages of defocusing distance,classical defocusing distance measuring method was introduced in detail,discusses the defects of the ranging system.In this paper to extract the characteristic point for range,to obtain the image with the median filtering method is used for noise reduction processing,through the analysis of the rim than edge diffusion figure,build relations between the object distance and spatial frequency.For video frame processing,first,to get each image is used to extract the feature points of coordinates,the method of extracting angular point coordinates,calculating the area of the target in the image,thus it is concluded that the experimental data,the measured distance.Proposed to improve the ranging technology solutions.By framing technology,the video image is decomposed into a frame of a stationary images,take three consecutive images to measure the distance,take the average value and make a more accurate range,improve efficiency.Finally,the experiment and application of ranging technology are completed.Through the establishment of the experimental environment of distance,to the experimental steps,described in detail,for the results of the experiment are analyzed,and the application field of the important cooperation,finally succeeded range.