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Method and system for color representation generation

專利號
US11176715B2
公開日期
2021-11-16
申請人
THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO（CA Toronto）
發(fā)明人
Maria Shugrina; Amlan Kar; Sanja Fidler; Karan Singh
IPC分類
G06T11/00; G06T15/50; G06T11/40
技術(shù)領(lǐng)域
color,sail,colors,in,image,neural,sails,alpha,patchwork,masks
地域： Toronto

摘要

There is provided a system and method for color representation generation. In an aspect, the method includes: receiving three base colors; receiving a patchwork parameter; and generating a color representation having each of the three base colors at a vertex of a triangular face, the triangular face having a color distribution therein, the color distribution discretized into discrete portions, the amount of discretization based on the patchwork parameter, each discrete portion having an interpolated color determined to be a combination of the base colors at respective coordinates of such discrete portion. In further aspects, one or more color representations are generated based on an input image and can be used to modify colors of a reconstructed image.

說明書

  • patchwork s: an integer parameter for the subdivision level of the triangle, taking on values 0 and above;
  • focus point (pu, pv): barycentric coordinates of the point within the triangular patch on which a wind is acting; and
  • wind w: a single float value, defining how much the sail is inflated upwind (positive) or downwind (negative).

    • While this color representation is compact and simple, it can nonetheless be used to model a variety of complex real-world gamuts. As described below, the effect of the above parameters on the color distribution represented by the color sail can be explained by first explaining the color sail's discrete-continuous nature and then the effect of wind on the blending behavior.

    The representation module 120 defines or receives three vertex colors (v0, v1, v2). The vertex colors are used to define a flat triangular face in RGB space (or other color space), with color at every point resulting from a smooth continuous interpolation of the vertex colors. In further cases, the colors at points in the triangular face can be defined discretely with discrete color distributions. For example, a graphic designer may choose to create a few discrete shading options in a flyer, rather than working with a smoothly varying gradient.

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