Research On The Application Of Lit Style Extraction And Transfer Based On The Lit Sphere

The extraction of light and shadow style and its application to 3D object and 2D image transfer are the hotspots of computer graphics real-time rendering research.In this paper,light and shadows are used to transfer light and shade style to three-dimensional objects and two-dimensional images.The light-shading style based on lit sphere is extracted,the light-shadows are transferred to the three-dimensional objects,and the light shots are transferred to two-dimensional images.This paper studies the generation of lit sphere and the method of light and shadow transfer under different conditions from three aspects.In this paper,we first define the lit-sphere-based lighting style and explain the extraction methods of different illumination balls.Secondly,we use the generated or existing lit sphere to transfer the three-dimensional objects and two-dimensional images into the dynamic light and shadow style.Effect,can quickly,high-quality use in real-time graphics image light shadow style transfer processing.The main contents of this paper include:In the first chapter,we summarize the research status of the extraction and transfer of the illumination style at our country and abroad,and the content and the organization structure of the research.In the second chapter,a lit style extraction method based on the lit sphere is proposed.This paper focuses on the definition of the lit sphere,the extraction method of the lit sphere based on the polygon fusion and the method of the lit sphere extraction based on the contour light value analysis.In the third chapter,the lit style transfer of 3D object is proposed.Focus on the light tangent space definition,geometric transformation and lit tangent space generated in a proposed in light tangent space lit sphere + different properties of light effect according to the style transfer and lit sphere + different material properties of light according to the style transfer.In the fourth chapter,a two dimensional image oriented illumination style transfer is proposed.The paper focuses on the method of extracting the preprocessing,the normal information extraction and construction method of the two-dimensional image lit style transfer,and the method based on the tone mapping function and the average brightness of the two dimensional image light information filtering.Finally,in the lit tangent space,the dynamic lit sphere is used to transfer the lit style of the two dimensional image.In the fifth chapter,the key technology of the previous research were detailed and build the system,detailed based on lit sphere,two-dimensional image light according to the style transfer application design,correctness of the examples of the verification process.In the sixth chapter,summarizes the main research work and innovative achievements of the paper,and makes a prospect on the basis of the current deficiencies or need to continue in-depth study.