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Non-Photorealistic Rendering - Interactive 3D Graphics

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    This kind of reflection model is called Toon Shading, or Cel Shading, or
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    sometimes Posterization. Toon is short for cartoon. Cel is short for celuloid,
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    the material for the transparent sheets that are used when animation is drawn
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    by hand. There are all sorts of variations for this type of rendering. For
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    example, you can change colors based on the shading level and get more
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    elaborate effects. In this rendering, a separate image processing shader is
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    used to detect the edges of the object, and outline them. This type of
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    illumination model is one example of what's called Non Photorealistic
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    Rendering, or NPR for short. Photorealistic means "looks like a photo." If you
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    think about it, there is a nearly infinite number of ways to draw things that
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    do not look realistic. The running joke is that we've been doing
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    non-photorealistic rendering on computers for decades, since realism is hard to
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    achieve. The way I see it is that non-photorealistic rendering has an intent
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    behind it. Just as we assign different fonts to text to convey a different
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    impression, NPR is a choice we can make about 3D rendering. Scott McCloud and
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    his book, Understanding Comics, talks about amplification through
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    simplification. The idea is that by displaying only the relevant pieces of
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    information, you strengthen your message. For example, an automobile owner
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    manual usually has simplified drawings instead of photos. Non-photorealistic
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    techniques often try to convey information in a more sketchy or artistic way.
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    For example, a sketchy look can let the viewer know that the result they're
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    looking at is in just an early stage of design.
Cím:
Non-Photorealistic Rendering - Interactive 3D Graphics
Video Language:
English
Team:
Udacity
Projekt:
CS291 - Intro to 3D Computer Graphics
Duration:
01:24

English subtitles

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