A fruit three-dimensional digitization method based on point cloud

Abstract

The invention discloses a fruit three-dimensional digitization method based on point cloud, which comprises the following steps: 1) acquiring fruit point cloud data by using a portable laser three-dimensional scanner; 2) adopting non-local classification, interactive threshold denoising and decimation; 3) Using point-octree, MLS fitting to simplify the fruit point model; 4) extracting fruit slicesof that point cloud model through PCA attribute calculation and recursive increment of geometrical similarity; 5) Registering fruit point cloud models by oriented-splat team registration and hierarchical global registration;; 6) performing texture synthesis of fruit point cloud based on texton sub-sampling weighted template. This method reconstructs the real fruits in the growing process, and proposes some methods and algorithms such as denoising, extraction, registration and direct texture synthesis, which make up for the shortcomings of rough effect, low coding efficiency and large storagespace of direct texture synthesis on the current point model.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional digitization methods, in particular to a method for three-dimensional digitization of fruits based on point clouds. technical background [0002] 3D digitization is to obtain the shape data of objects manually, process and splicing the obtained data information, organize them by modeling, seamlessly integrate each isolated single-view 3D digital model, and form a 3D image after texture and rendering processing. data file. Modeling is a very important step, especially in the face of such large-scale 3D data that requires models, it is difficult to achieve without a strong team. 3D is the display and performance of data after collection and calculation and analysis. Three-dimensional data can reflect objective reality more comprehensively than two-dimensional data. Similar to the two-dimensional digital model, the three-dimensional digital model must have the most basic spatial data pro...

AI Technical Summary

Problems solved by technology

However, the current 3D digitization method based on fruit still extracts the 3D fruit shape from the messy background point cloud, which has a large amount of calculation, low efficiency and inaccurate results.

Images