Method and device for drawing three-dimensional cloud map of grain storage in large grain piles based on adaptive clustering

Abstract

The present invention provides a method and device for drawing a three-dimensional cloud image of a large grain pile based on adaptive clustering. The method includes: acquiring multiple temperature point data inside the grain pile collected by multiple temperature collection devices, The temperature field data interpolation calculation is performed on multiple temperature point data of the grain pile to obtain the three-dimensional temperature field data of the grain pile, and the temperature point set of the grain pile is generated based on the three-dimensional temperature field data; the temperature of the first temperature point that has not been clustered is selected as the first The clustering center of the cluster determines whether the difference between the temperature of the unclustered first neighborhood point of the first temperature point and the cluster center is greater than the preset difference threshold; the temperature of the first neighborhood point and When the difference of the initial cluster center is less than the preset difference threshold, divide the first neighborhood point into the first cluster; update the cluster center of the first cluster and the difference threshold corresponding to the first cluster ; Carry out three-dimensional convex hull calculations on each cluster, calculate the center temperature of each cluster, and generate a three-dimensional cloud map of the temperature of the grain pile.

Description

technical field [0001] The invention relates to the field of granary information technology, in particular to a method and device for drawing a three-dimensional cloud map of large grain piles based on self-adaptive clustering. Background technique [0002] As the world's population continues to increase, the demand for food is increasing. While finding ways to increase grain production, people gradually pay attention to efficient, safe, and green grain storage. In order to check whether there are large-volume cold cores and local overheating in the grain pile, it is necessary to design a cloud map drawing method that can visually display the temperature distribution inside the grain pile in real time; Grain storage technology to reduce grain loss during storage. [0003] The existing research on the generation of 3D cloud images of large grain piles mainly focuses on the temperature rendering display of the surface or internal slices of 3D objects, and rarely describes th...

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Problems solved by technology

The schematic diagram of the effect of the three-dimensional cloud image of the temperature of the grain pile generated based on this method is as follows: figure 2 As shown, this method can set the transparent attribute for each pixel, so the temperature inside the grain heap can be grasped when observing from the outside of the grain heap; but as the observation distance shrinks, it will appear as figure 2 For the pixels shown on the right side of the image, since the point cloud does not blur the boundaries of each pixel, the edge part will present a mosaic-like effect; in addition, real-time rendering of a large number of pixels will also greatly occupy the GPU resources are prone to lag during the observation process

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