Research On Display Optimization And Real-time Interaction Of Large Scale Seismic Slices

In the field of seismic exploration,3D analysis is a vital approach to analogize seismic data.3D visualization of slices can shows geological attributes which help seismic interpretation personnel to find region of interest,furthermore enables the extraction of target seismic data.With the development of seismic exploration technology,the growing quantity of seismic volume data and requirement of human-computer interacting lead to huge amount of computation,conflicting with limited computing resource.Based on the tradeoff between user experience and computing resource,the main work is as follows:(1)To solve the problem of poor display quality,a light intensity adaptive schema is proposed.The idea is to enhance the light intensity of the visual area and employ multi-level multiresolution technology(LOD layered details display technology)to refine the view area.(2)To improve interaction accuracy,a wide-angle fisheye display strategy based on "Focus+Context" is designed.The use of fish-eye technology not only satisfies the improvement of display accuracy of the ROI,but also ensures good contextual relevance.Balancing between viewpoint and interest point effectively improves the accuracy of slice position and hit ratio of extracting data.(3)To improve low efficiency of interaction,through the volume data screening strategy based on distance metrics,the efficiency of slice interaction in child mode is improved,and the volume data volume loaded into memory is reduced.Based on the twO-stage computing interaction strategy:During the interaction process,stop the slicing data calculation thread and prioritize the real-time interaction requirements of the slice;after the interaction is stopped,the seismic body slice is refined to high resolution,and the data set on the slice is calculated.The experimental results show that under certain conditions of the computer platform memory,this method can effectively improve the display quality of the area around the user's viewpoint in ultra-large-scale seismic body slice.Using the fish-eye technology,the multi-resolution display strategy is realized,and the interactive precision is improved.Moreover,the real-time interaction demand for the child mode is realized.The contradiction between the interaction efficiency of ultra-large-scale seismic slices and the calculation of seismic volume data is well balanced.