“Charcoal Rendering and Shading with Reflections” by Du and Akleman

  • ©Yuxiao Du and Ergun Akleman

  • ©Yuxiao Du and Ergun Akleman

  • ©Yuxiao Du and Ergun Akleman

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Entry Number: 05

Title:

    Charcoal Rendering and Shading with Reflections

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Abstract:


    In this work, we have developed an approach to include global illumination effects into charcoal drawing (see Figure 1). Our charcoal shader provides a robust computation to obtain charcoal effect for a wide variety of diffuse and specular materials. Our contributions can be summarized as follows: (1) A Barrycentric shader that is based on degree zero B-spline basis functions; (2) A set of handdrawn charcoal control texture images that naturally provide desired charcoal look-and-feel; and (3) A painter’s hierarchy for handling a high number of shading parameters consistent with charcoal drawing.

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©Yuxiao Du and Ergun Akleman

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