Patent
System and method for drawing and painting with warped bitmap brushes
John Bronskill,Michel Gangnet +1 more
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TLDR
In this paper, a system and method for rendering a warped brush stroke using a bitmap brush image, the brush stroke being along a arbitrarily curved guideline, was described, and the method generated a piecewise linear approximation to the guideline followed by generating polygons with the aid of the linear segments such that the generated polygons are convex and contiguous linear segments result in contiguous polygons.Abstract:
A system and method is described for rendering a warped brush stroke using a bitmap brush image, the brush stroke being along a arbitrarily curved guideline. The described system and method generate a piecewise linear approximation to the guideline followed by generating polygons with the aid of the linear segments such that the generated polygons are convex and contiguous linear segments result in contiguous polygons. A mapping is identified between segments of the bitmap brush and the polygons such that the corners or the boundaries of the segments of a segment map to the corners or boundaries of a corresponding polygon. The segment of the bitmap brush is mapped into the corresponding polygon using transformations that do not require visiting a pixel in the rendered warped brush stroke more than once. Examples of such transformations include bilinear transformations and texture mapping in combination with tiling.read more
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Patent
Interactive digital displays
Bongshin Lee,Greg Smith,Amir Netz,Matthew J. Longley,Allison Tran,Cristian Petculescu,Shahar Prish,Diego M. Oppenheimer,Adam D. Wilson,Patrick J. Baumgartner,Pedram Faghihi Rezaei,Amy Forstrom,Eran Megiddo +12 more
TL;DR: In this article, the authors describe a display device configured to receive user input and recognize commands relative to data visualizations, and a graphical user interface configured to be presented on the display device that allows users to interact with the visualizations via user commands.
Patent
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Stephen DiVerdi,Sunil Hadap +1 more
TL;DR: In this paper, a method, system, and computer-readable storage medium are disclosed for simulating brush behavior, where user input is received to modify an image using a brush model, wherein the brush model comprises data stored in a memory of a computer system.
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System and Method for Simulating Stiff Bristle Brushes Using Stiffness-Height Parameterization
TL;DR: In this paper, a method, system, and computer-readable storage medium for simulating bristle brush behavior in an image editing application may use stiffness-height parameterization to determine the height of a brush tool above a canvas during a brush stroke.
References
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Book
Curves and surfaces for CAGD : a practical guide
TL;DR: This fifth edition has been fully updated to cover the many advances made in CAGD and curve and surface theory since 1997, when the fourth edition appeared as mentioned in this paper, and the theory material has been streamlined using the blossoming approach; the applications material includes least squares techniques in addition to the traditional interpolation methods.
Proceedings ArticleDOI
Compositing digital images
TL;DR: In this article, a matte component can be computed similarly to the color channels for four-channel pictures, and guidelines for the generation of elements and arithmetic for their arbitrary compositing are discussed.
Patent
Paintbrush stylus for capacitive touch sensor pad
TL;DR: In this paper, a touch-sensor pad with a sensor matrix array having a characteristic capacitance on horizontal and vertical conductors connected to sensor pads is used to produce paint-like strokes on a display associated with the touch sensor pad.
Proceedings ArticleDOI
Drawing and animation using skeletal strokes
Siu Chi Hsu,Irene H. H. Lee +1 more
TL;DR: This paper presents the drawing and animation system, “Skeletal Draw”, based on skeletal strokes, and demonstrated how this mechanism allows us to build up powerful pseudo-3D models which are particularly useful in the production of 2 1/2 D cartoon drawings and animation.
Patent
Electronic graphic system
TL;DR: In this paper, an electronic graphic system consisting of a memory for storing data representing an image and a user operable stylus and touch tablet combination is presented, by which the user can select a notional painting implement a color with which to paint and can create data defining positions in the image at which painting is to occur.