Considering the limitation of tracking range on sports video target tracking in basketball games, there are some problems, such as poor tracking effect, low accuracy, low anti-interference ability, and being time-consuming. Therefore, this study proposes a target tracking algorithm of basketball video based on improved grey neural network. According to the pixel grey difference of the target image in basketball video, this study applies the adaptive threshold algorithm in order to segment the target image of basketball video and obtain the target area of basketball video. This algorithm can normalize the grey level of the target area, build the generating sequence of the target area, and collect the target data of the basketball video. It obtains the feature output matrix of basketball video target based on the geometric dispersion of the target image and extracts the key feature points of basketball video target by single frame visual difference analysis. In addition, it makes use of the improved grey neural network to track and locate the feature points of basketball video target and reconstruct the basketball video target image with superresolution to realize basketball video target tracking. The experimental results show that the proposed algorithm has good target tracking effect of basketball video, can effectively improve the target tracking accuracy and anti-interference ability, and can shorten the target tracking time.

The thesis researched the relationship between green design and reconfigurable on NC machine tool, and expatiated that the development of the reconfigurable machine tools is essential. This article has carried on the analysis from the deep hole components classification and the formed movement craft two aspects to the deep hole components race. The reconfigurable deep hole machine tool was to carry on the modular design based two aspects for the module partition and reconstructable analyze, solved the key technologies the machine tool modulation design. From the machine tool bed module, the head of machine tool module, the cutting tool auxiliary system and the numerical control system four aspects, to design and research on reconfigurable machine tool, solved the difficult design problem which the part reconfigurable designed.

In this paper, the Steering theory and running theory are introduced. Then the virtual prototype of the shovel loader with four tracks was established and the simulation study was carried out, which proves that after changing the tires into tracks, the steering qualities of the shovel loader was nearly keep the same. In the end, the experiment was done to validate the correctness of the virtual prototype. As the track conversion technology can not only keep the former vehicle’s maneuverability, but also greatly improve the vehicle’s passing ability, it has great popularize and application value

This paper introduces how to use the AutoCAD, Pro/E,VRML, Javascript, Dreamweaver and other computer-related software to complete the virtual ball valve assembly based on Computer Supported Cooperative Design. This paper also describes some ways to resolve contradictions and problems when related software worked together.