面向游戏与动漫的黑白漫画风格非真实感实时渲染方法

Real-time Non-photorealistic Rendering Method for Black and White Comic Style in Games and Animation

针对一般黑白漫画风格的非真实感渲染方法资源开销高和实时性差的问题,提出一种面向游戏与动漫的黑白漫画风格非真实感实时渲染方法。设计特化光照模型,通过分析光照模型效果,设计主体突出的环境光项和灰度分级的漫反射项,合并光照模型各项,实现基于特化光照模型的场景预处理;提出屏幕空间三相边缘检测方法,将预处理得到的场景光照结果依次进行深度边缘检测、法线边缘检测、颜色边缘检测,合并边缘检测结果;对场景光照结果进行屏幕空间分区域渲染,依据光照结果灰度值大小,分别采用网点着色和线条着色方式处理,并采用插值方法处理着色交界;合并结果,依据光照模型结果灰度值设计分段函数,合并屏幕空间三相边缘检测结果与屏幕空间分区域渲染结果,得到最终渲染结果。实验表明,该方法能够以较低的资源开销和较快的渲染速度实现黑白漫画风格非真实感渲染,在有限的资源下提高渲染的效果,具有显著的黑白漫画风格。

To address the issues of high resource consumption and lengthy workflow in general nonphotorealistic,this paper proposes a real-time non-photorealistic rendering method for black and white comic style in games and animation.A specialized lighting model is designed to highlight the main environmental light and the grayscale grading of diffuse reflection based on the analysis of the lighting model effect.The pre-processing of the scene is achieved by merging the various components of the lighting model.A screen space three-phase edge detection method is proposed to sequentially perform depth edge detection,normal edge detection,and color edge detection on the pre-processed scene lighting results,and the edge detection results are combined.The scene lighting results are rendered by screen space partitioning,utilizing dot shading and line shading respectively based on the grayscale value of the lighting results,with interpolation applied to shading boundaries.The results are merged by designing a segmented function based on the grayscale value of the lighting model results,combining the screen space three-phase edge detection results with the screen space partition rendering results to obtain the final rendered output.Experimental results demonstrate that the proposed method can achieve nonphotorealistic rendering of black and white comic style with relatively low resource consumption and reduced error rate,showcasing a distinctive black and white comic style.