Patent
Color decontamination for image compositing
TLDR
In this article, the estimated foreground colors are determined for pixels in a border region between the foreground and the background of the input image, and a texture preserving luminance blending operation is performed to create refined foreground colors for the pixels in the border region.Abstract:
Various embodiments of methods and apparatus for removing unwanted background color from a border region surrounding a foreground object in an image in order to composite the foreground object of the image with a new background image are described. Embodiments of color decontamination for image compositing may accept an image and an alpha matte corresponding to the image as input. In some embodiments, estimated foreground colors are determined for pixels in a border region between the foreground and the background of the input image. In some embodiments, the input image may be created by down-sampling a higher resolution image and pixels with estimated foreground colors may be up-sampled. In some embodiments, a composite image may be created based on the input image, the alpha matte, the estimated foreground colors of pixels in the border region and a new background image. In some embodiments, a texture preserving luminance blending operation may be performed using the estimated foreground colors for pixels in the border region to create refined foreground colors for pixels in the border region. In some embodiments, a composite image may be created further based on the refined foreground colors for pixels in the border region. In some embodiments, parameters controlling the creation of a composite image may be set in response to user input.read more
Citations
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References
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Journal ArticleDOI
A Closed-Form Solution to Natural Image Matting
TL;DR: A closed-form solution to natural image matting that allows us to find the globally optimal alpha matte by solving a sparse linear system of equations and predicts the properties of the solution by analyzing the eigenvectors of a sparse matrix, closely related to matrices used in spectral image segmentation algorithms.
Journal ArticleDOI
An Image Inpainting Technique Based on the Fast Marching Method
TL;DR: A new algorithm for digital inpainting based on the fast marching method for level set applications is presented, very simple to implement, fast, and produces nearly identical results to more complex, and usually slower, known methods.
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Methods and apparatus for detecting and reducing color artifacts in images
TL;DR: In this paper, the authors describe a method for displaying text on gray scale and color monitors (2400) using a color filter with filter cells (2410, 2411, 2412) that can be switched between a color and a clear mode of operation.
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3D graphics object copying with reduced edge artifacts
TL;DR: In this article, the alpha value of each pixel is used to mark the pixels which are and are not part of the image to be copied, and removes unwanted pixels from bilinear filtering operations.
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Identifying intrinsic pixel colors in a region of uncertain pixels
TL;DR: In this article, an intrinsic color of a given pixel located in an area of interest that is adjacent to at least one of the first and second regions is estimated by extrapolating from colors of multiple pixels in one of two different regions.