A 3D modeling method of corn ear based on the geometric characteristics of kernels
A corn ear and three-dimensional modeling technology, applied in 3D modeling, special data processing applications, image data processing, etc., can solve problems such as inability to accurately express the corn ear model
Inactive Publication Date: 2017-03-22
HENAN UNIV OF SCI & TECH
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Problems solved by technology
This modeling method cannot accurately express the actual corn ear model in the field
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[0032] According to the grain arrangement characteristics of corn ears, the present invention selects the relevant geometric characteristics of corn ears for statistical measurement, and the geometric model of corn ears built is more in line with reality. Specifically, the three-dimensional modeling method of corn ears based on the geometric characteristics of corn comprises the following steps:
[0033] Step 1. Establish a corncob model
[0034] Take corncob samples of the same variety and with the same moisture content. As we all know, corncobs have a certain taper along the axial direction. like figure 1 As shown, the part with the largest diameter along the axial direction of the center of the corn cob is marked as B, the end face near part B is marked as A, and the end face of the other end is marked as C, and the corn cob is divided into two parts: the big head section AB and the small head section BC Take the vernier caliper to measure the diameter of the largest diame...
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Disclosed is a corn ear three-dimensional modeling method based on grain geometrical features. The corn ear three-dimensional modeling method comprises the following steps that (1) a corncob model is established and a corncob is divided into a large-end region AB to be detected and a small-end region BC to be detected; (2) corn grain models are established; wherein the corn grain model corresponding to the large-end region AB on a corn ear is established and the corn grain model corresponding to the small-end region BC on the corn ear is established; (3) corn grain embryo ditch models are established, wherein samples are placed on the corn grain models established in the step (2) to form embryo ditches through cutting and complete corn grain entity models with an embryo ditch models are established; (4) a corn ear model is established. According to the method, structural modeling based on parametric representation of the geometrical features is conducted, the model is more similar to real corn ears, and the study requirements for corn ear threshing and the like can be met; the model can be used for modeling of ears of different corn varieties, and the established models can be used for simulation finite element analysis and the like of agricultural research workers.
Description
technical field [0001] The invention relates to a three-dimensional modeling method suitable for finite element and other simulation analysis of characteristics of corn ears, in particular to a three-dimensional modeling method for corn ears based on the geometric characteristics of grains. Background technique [0002] Corn is one of the main food crops in my country. The number of rows of corn ears is one of the key shapes describing the varieties of corn. The number of spikelet primordia of each variety is controlled by genes and is usually constant. Therefore, the ears of most corn ears The number of rows is even, and most of them are sixteen rows or eighteen rows, and in the field performance, the ears of sixteen rows of ear rows account for the majority. The simulation modeling of corn ear from the statistical point of view is of great significance to the theoretical research of corn ear and related engineering design. [0003] Corn threshing principles mainly include ...
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IPC IPC(8): G06F17/50G06T17/00
Inventor 李心平马义东杜哲马磊吴康高春艳马福丽
Owner HENAN UNIV OF SCI & TECH