Unsharp Masking, Countershading and Halos: Enhancements or Artifacts?
نویسندگان
چکیده
منابع مشابه
Unsharp Masking, Countershading and Halos: Enhancements or Artifacts?
Countershading is a common technique for local image contrast manipulations, and is widely used both in automatic settings, such as image sharpening and tonemapping, as well as under artistic control, such as in paintings and interactive image processing software. Unfortunately, countershading is a double-edged sword: while correctly chosen parameters for a given viewing condition can significa...
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Much research has gone into developing methods for enhancing the contrast of displayed 3D scenes. In the current study, we investigated the perceptual impact of an algorithm recently proposed by Ritschel et al. that provides a general technique for enhancing the perceived contrast in synthesized scenes. Their algorithm extends traditional image-based Unsharp Masking to a 3D scene, achieving a s...
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ژورنال
عنوان ژورنال: Computer Graphics Forum
سال: 2012
ISSN: 0167-7055
DOI: 10.1111/j.1467-8659.2012.03056.x