Research on Singularity Detection Method in Groundwater Dynamic Field Evolution Images
To enhance the details in the image,perfect the smoothing process,and improve the detection accuracy of singularities in the image,the singularity detection method in groundwater dynamic field evolution image based on improved Renyi entropy is proposed.By solving the gradient field of the groundwater dynamic field evolution image,the relative gradients of the image under different brightness are calculated.The image enhancement function is utilized to enhance the processing of the groundwater dynamic field evolution image.Innovatively,the groundwater dynamic field evolution image is divided into image background domain and target domain according to the three-dimensional histogram.The three-dimensional Renyi entropy of the evolution image in the target and background domains is defined by using the improved Renyi entropy.Combined with the principle of maximum entropy segmentation,the groundwater dynamic field evolution images are segmentd.The smoothing scale is introduced to smooth the evdution image of groundwater dynamic field.The probability function is used to establish the image singularity detection function.The singularity detection algorithm of the evolution image of groundwater dynamic field is designed.The experimental results show that the proposed method can accurately detect the singularities in the image and improve the detection entropy value and detection rate to more than 0.8 and more than 90%,respectively.This study effectively improves the detection performance of singularities in groundwater dynamic field evolution images.
Singularity detectionGroundwaterEvolution imageImproved Renyi entropyDynamic fieldImage enhancementGradient field
NETL
NSTL
万方数据
