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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
技術領域
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

In a particular case of the system, the set of parameters further comprising a focal point parameter and a wind parameter.

In another case, the color distribution comprises a histogram of bins in Red-Green-Blue (RGB) color space provided as input to the trained neural network.

In yet another case, the bin values are normalized.

In yet another case, input to the trained neural network comprises error metrics on pixel colors in the input image.

In yet another case, the error metrics comprise a greedy Red-Green-Blue (RGB) reconstruction loss and a fraction of colors in the color distribution that have a relevance to the color representation above a predetermined threshold.

In yet another case, the mapping module further determines the relevance comprising performing Kullback-Leibler divergence.

In yet another case, determining the divergence further comprises determining histograms for patches of the input image; taking a maximum for each patch; and normalizing the maximums.

In yet another case, the mapping module further maps each portion of the color representation with a color that is closest to a pixel or group of pixels in the input image; and wherein the representation module further: receives a modification to any one of the set of parameters; regenerates the color representation with the modified parameter; and recolors each pixel or group of pixels in the input image to the color value of the mapped portion of the color representation.

權利要求

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