Research On Three-dimensional Visual Modeling Method For Wheat Growth

Rapid and low-cost crop simulation models have important practical significance and economic value for landscape,agricultural management,virtual reality,three-dimensional game and other fields.Crop modeling research is mostly concentrated on crops such as corn and rice,and wheat modeling research is relatively rare.As one of the three major food crops in the world,due to its complex structure and diverse morphology,the current three-dimensional modeling of wheat mainly focuses on three-dimensional reconstruction based on ecological physiological growth machine and three-dimensional reconstruction based on three-dimensional morphological model.Most of the studies focused on the static three-dimensional modeling of wheat plants,but few on the dynamic growth modeling of wheat,especially the modeling of wheat population.The dynamic growth modeling and population modeling of wheat are of great potential significance and value for the regulation and regulation of wheat growth and even food security.In this thesis,three-dimensional visualization modeling method of wheat growth is studied.Aiming at the problem of single plant wheat modeling,wheat ear,the most complex organ of wheat,is taken as the core research object,and the process from heading to maturity is taken as a key point to model wheat growth.Using Bezier surface and polygon to model wheat organs respectively,the wheat grains,lemma and inner lemma as a whole were re-polygonalized(simplified)to reduce the model data and accelerate the calculation speed of model growth,and make it easier to detect the collision of wheat grains from ear heading to maturity stage.The experimental results show that this method can simulate wheat growth process with low cost and high modeling efficiency.The modeling effect is good and can be used to model different growth stages of wheat.The three-dimensional simulation model of wheat field has important theoretical significance and application value for wheat growth regulation and management.Aiming at the problem of modeling wheat clusters,this paper takes the three-dimensional simulation of wheat strains as the research object and models the wheat field based on visual methods.At the same time,the paper uses different regions to model the wheat field,and uses the visible part of the three-dimensionalpoint cloud as the constraint.Combining the biological knowledge and the polygonal wheat model to model the wheat clusters in different regions makes the modeling of the wheat field more realistic.The method can simulate the three-dimensional shape of wheat wheat field and has high modeling efficiency.The experimental results show that the proposed method has a good modeling effect and can realize the modeling of wheat field in different growth stages at a lower cost.