Virtual Reality System For Rehabilitation Education Of Autistic Children

Autism is a kind of developmental disorder,which is mainly manifested in different degrees of individual social communication obstacles,communication obstacles,stereotyped behaviors,and narrow interests.The application of virtual reality technology in the research and intervention of autism is a new research field that has emerged in recent years.In this paper,based on a thorough study of the need for intervention training for children with autism and the status quo of virtual reality technology both at home and abroad,and on-the-spot investigation,a software system based on virtual reality technology is proposed and designed and implemented for children with autism.The educational intervention program has achieved certain results.The main details of the work are as follows:(1)Firstly,the characteristics of children with autism were analyzed.According to the principle of intervention training for children with autism,an autistic child intervention program with amusement park theme was designed,and the overall system design ideas were proposed.Secondly,through the 3ds Max 3D animation rendering and production software,the panoramic modeling of teaching scenes and game scenes in the virtual game is completed.The model is optimized under the premise of ensuring the fidelity of the model.(2)Completed a virtual scene of autistic children's virtual intervention in the Unity 3d 3D engine and realized its real-time driving,in the process of building a 3D virtual scene of children with autism,in light rendering,collision detection and model construction,etc.Some optimization measures have been made to speed up the software operation and reduce resource consumption.(3)For the existing SSAO algorithm,the layered feeling is not rich,the contrast is low,and a novel screen space environment occlusion method is proposed.First downsampling to reduce the amount of subsequent calculations,and then introduce a discrete horizontal structure,calculate the contour level and the contour value by sampling the depth texture,and then apply the linear or Gaussian attenuation according to the distance to reduce the distance between the current texel and the subpixel,and finally Smooth noise filtering reduces noise effects.The proposed method is closer to the ray tracing solution than the existing ambient light obscuring algorithm SSAO.The running speed is significantly improved,and no pre-calculation is required for static or dynamic scenes.(4)This topic selects the popular HTC Vive sensor as the main device for software interaction to replace the traditional keyboard and mouse interaction,provides users with an immersive experience,and makes practical research for the intervention treatment of children with autism,enriching the autism The methods and methods of intervention treatment have a good practical value.