Rice population three-dimensional morphological structure digitalization and visualization reconstruction method

Abstract

The invention discloses a rice population three-dimensional morphological structure digitalization and visualization reconstruction method, and relates to the technical field of plant three-dimensional digitalization and visualization construction. The method comprises steps: S1, adopting a 'positioning-separation-measurement' method, referring to different coordinate systems, positioning positions and directions of rice plants, stems and blades, and measuring geometrical morphologies of stalks, the blades and other organs; S2, according to different levels, structuring data obtained in S1, and constructing digital rice-population two-dimensional morphological structure; and S3, by utilizing a geometric explanation principle, transforming the positions and directions of the rice plants, the stems and the blades in different reference coordinate systems and the geometrical morphologies of the stalks, the blades and the other organs to the same field coordinate system, and reconstructing digitalization and visualization rice population three-dimensional morphological structure. Through utilization of the method of the invention, the complexity of three-dimensional data acquisition can be effectively reduced, and the visual reconstructed rice population morphological structure and an actual image have a high similar degree.

Description

technical field [0001] The invention relates to the technical field of plant three-dimensional graphic construction, in particular to a three-dimensional digitization and visualization construction method of rice population morphological structure. Background technique [0002] Plant morphological structure, that is, the morphological characteristics, spatial arrangement of plants and the relationship between various traits, such as plant height, tiller distribution, leaf length, width and angle, ear shape, individual arrangement in the group and its geometry etc. [0003] The morphological structure of rice is controlled by rice genotype and regulated by environmental factors such as water, fertilizer and climate; the morphological structure of rice affects the microclimate of the population canopy, especially the interception of solar radiation energy, which in turn affects the accumulation of dry matter; The embodiment of material distribution. Therefore, rice morpholog...

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Problems solved by technology

However, when there are many branches and leaves in the plant canopy, the reconstructed three-dimensional plant canopy structure is still quite different from the real plant, especially the density of leaves, spatial orientation, leaf area, etc. may have large errors from the actual ones. , it is difficult to apply to the research and analysis of function-structure

In addition, the amount of plant 3D point cloud data acquired by 3D laser scanners is generally very large. It is a huge challenge to identify each organ of the plant and restore the original shape and structure of the plant from these large amounts of disordered point cloud data. The occlusion problem is serious, which will cause the loss of some organ data in the 3D point cloud acquired by the scanner

[0010] Taking a series of images of plants from different angles, and then reconstructing the three-dimensional shape of plants from these image sequences, it is easier to obtain the shape of a single organ, but for the whole plant, it is necessary to automatically obtain the image sequence of the plant. There are still many problems to be solved, such as the segmentation and automatic recognition of organs in images, and the restoration of occluded organs. At present, there is no satisfactory solution.

In particular, there are many organs in the canopy of the plant group, and the mutual occlusion is common, so the accuracy of the 3D model obtained by the image-based reconstruction method is difficult to guarantee

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