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Shading Curves: Vector-Based DrawingWith Explicit Gradient Control.

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Title: Shading Curves: Vector-Based DrawingWith Explicit Gradient Control.
Authors: Lieng, Henrik1 henrik.lieng@hib.no, Tasse, Flora1 fp289@cam.ac.uk, Kosinka, Jiří1 jiri.kosinka@cl.cam.ac.uk, Dodgson, Neil A.1 nad@cl.cam.ac.uk
Source: Computer Graphics Forum. Sep2015, Vol. 34 Issue 6, p228-239. 12p. 9 Color Photographs, 1 Black and White Photograph, 6 Diagrams, 1 Graph.
Subjects: Vector graphics, Curves, Shades & shadows in art, Computational geometry, Laplacian operator, Image color analysis
Abstract: A challenge in vector graphics is to define primitives that offer flexible manipulation of colour gradients. We propose a new primitive, called a shading curve, that supports explicit and local gradient control. This is achieved by associating shading profiles to each side of the curve. These shading profiles, which can be manually manipulated, represent the colour gradient out from their associated curves. Such explicit and local gradient control is challenging to achieve via the diffusion curve process, introduced in 2008, because it offers only implicit control of the colour gradient. We resolve this problem by using subdivision surfaces that are constructed from shading curves and their shading profiles. [ABSTRACT FROM AUTHOR]
Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Shading Curves: Vector-Based DrawingWith Explicit Gradient Control.
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  Data: <searchLink fieldCode="AR" term="%22Lieng%2C+Henrik%22">Lieng, Henrik</searchLink><relatesTo>1</relatesTo><i> henrik.lieng@hib.no</i><br /><searchLink fieldCode="AR" term="%22Tasse%2C+Flora%22">Tasse, Flora</searchLink><relatesTo>1</relatesTo><i> fp289@cam.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Kosinka%2C+Jiří%22">Kosinka, Jiří</searchLink><relatesTo>1</relatesTo><i> jiri.kosinka@cl.cam.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Dodgson%2C+Neil+A%2E%22">Dodgson, Neil A.</searchLink><relatesTo>1</relatesTo><i> nad@cl.cam.ac.uk</i>
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  Data: <searchLink fieldCode="JN" term="%22Computer+Graphics+Forum%22">Computer Graphics Forum</searchLink>. Sep2015, Vol. 34 Issue 6, p228-239. 12p. 9 Color Photographs, 1 Black and White Photograph, 6 Diagrams, 1 Graph.
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  Data: <searchLink fieldCode="DE" term="%22Vector+graphics%22">Vector graphics</searchLink><br /><searchLink fieldCode="DE" term="%22Curves%22">Curves</searchLink><br /><searchLink fieldCode="DE" term="%22Shades+%26+shadows+in+art%22">Shades & shadows in art</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+geometry%22">Computational geometry</searchLink><br /><searchLink fieldCode="DE" term="%22Laplacian+operator%22">Laplacian operator</searchLink><br /><searchLink fieldCode="DE" term="%22Image+color+analysis%22">Image color analysis</searchLink>
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  Data: A challenge in vector graphics is to define primitives that offer flexible manipulation of colour gradients. We propose a new primitive, called a shading curve, that supports explicit and local gradient control. This is achieved by associating shading profiles to each side of the curve. These shading profiles, which can be manually manipulated, represent the colour gradient out from their associated curves. Such explicit and local gradient control is challenging to achieve via the diffusion curve process, introduced in 2008, because it offers only implicit control of the colour gradient. We resolve this problem by using subdivision surfaces that are constructed from shading curves and their shading profiles. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Computer Graphics Forum is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/cgf.12532
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 228
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      – SubjectFull: Vector graphics
        Type: general
      – SubjectFull: Curves
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      – SubjectFull: Shades & shadows in art
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      – SubjectFull: Computational geometry
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      – SubjectFull: Laplacian operator
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      – SubjectFull: Image color analysis
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            – D: 01
              M: 09
              Text: Sep2015
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              Y: 2015
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