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    题名: Real-time Multiple Refraction by Using Image-Space Technology
    作者: Chi, Ming-Te;Wang, Shi-Hao;Hu, Chen-Chi
    紀明德
    贡献者: 資科系
    关键词: refraction, image-space technology, shader, graphical processing unit (GPU), photorealistic rendering
    日期: 2016-05
    上传时间: 2016-04-11 14:38:41 (UTC+8)
    摘要: In photorealistic rendering, refraction is a vital optical phenomenon for transparent objects. This study proposes a real-time image-space method for approximate multiple refraction. First, a depth-peeling technique is used to disassemble a 3D polygonal model into four layers of normal and depth textures. Next, a modified ray-height-field intersection algorithm is employed to resolve discontinuities between the layers and compute the intersection, refraction, and total internal reflection. Finally, an environment map with a refraction vector is used to compute the final shading. The image space and shader technique enables generating a maximum of four bounces to increase the refraction detail and handle more complex scenes compared with those examined in previous methods. We performed several experiments with various scenes and the results showed the feasibility and quality of the proposed multi-refraction method. In addition, the rendering efficiency was demonstrated by comparing the proposed method with GPU-based ray tracing.
    關聯: JISE, 31(3),
    数据类型: article
    显示于类别:[資訊科學系] 期刊論文

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