What is Non-Photo Realistic Rendering?
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You’ve heard of photorealistic rendering – but what exactly is non-photorealistic rendering (NPR), and why does it matter?
Table of Contents:
What is non-photorealistic rendering?
This is a relatively new area of computer graphics that uses digital art and other technologies. Unlike photorealism, it focuses on animation painting and drawing rather than pixel imaging. An example would be characters in a 3D video game.
With photorealism, the application of artists was somewhat restricted. Non-photorealistic rendering, however, opened the gates to the world of gaming and animation. It is a digital canvas for artists who want to exhibit their imagination in a more comprehensive way.
Applications for non-realistic photorendering
- Comics and animation
An industry that has benefited greatly from this type of rendering is comics and animation, with enhanced flexibility and precision. Giants such as Disney and Pixar have heavily utilized it to create blockbuster films.
- Commercial products
This rendering is finding its way into product imaging, where photorealistic rendering cannot be used. It is being used in industries to create user manuals for parts where imaging cannot work. (For example, a user manual for refrigerator.)
Categories of non-realistic photorendering
- Pen and ink illustrations:
This category uses line art, outlining and cross-hatching to create artworks.
- Painterly rendering:
Its styles include impressionist, expressionist and pointillist.
- Cartoon rendering:
It uses effects like shading and distortion to achieve cartoon-like effects.
- Technical illustrations:
For technical manual imaging, it uses edge lines and matte shading.
- Scientific visualization:
Splatting and line drawing techniques are used to add precision to scientific visualization.
This style of rendering is getting better, as we have access to faster and more efficient processors. These illustrations use strokes, textures, tones, outlines, scaling and indication to deliver what we see in many video games and cartoons today.
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