Facial image processing methods and systems
First Claim
Patent Images
1. A computer-implemented facial image-processing method comprising:
- illuminating a face with multiple different light sources;
measuring range map data from said illuminating;
measuring image data from said illuminating;
deriving a 3-dimensional surface from the range map data;
computing surface normals to the 3-dimensional surface; and
processing the surface normals and the image data to derive an albedo map;
and further comprising after said measuring of the range map data, applying a generic face template to the range map data to reject noise that is associated with the range map data.
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Abstract
In the described embodiment, methods and systems for processing facial image data for use in animation are described. In one embodiment, a system is provided that illuminates a face with illumination that is sufficient to enable the simultaneous capture of both structure data, e.g. a range or depth map, and reflectance properties, e.g. the diffuse reflectance of a subject'"'"'s face. This captured information can then be used for various facial animation operations, among which are included expression recognition and expression transformation.
46 Citations
7 Claims
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1. A computer-implemented facial image-processing method comprising:
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illuminating a face with multiple different light sources; measuring range map data from said illuminating; measuring image data from said illuminating; deriving a 3-dimensional surface from the range map data; computing surface normals to the 3-dimensional surface; and processing the surface normals and the image data to derive an albedo map; and further comprising after said measuring of the range map data, applying a generic face template to the range map data to reject noise that is associated with the range map data. - View Dependent Claims (2, 3, 4)
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5. A facial image processing system comprising:
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multiple different light sources, one of which providing structured light that can be projected onto the face of a subject, another of which providing light from which specularly-suppressed, diffuse reflectance data from the subject'"'"'s face can be ascertained; a camera configured to capture structure and reflectance data from an illumination of the subject'"'"'s face with the multiple different light sources; and a computerized image processor configured to process the structure and reflectance data to provide an albedo map that describes specular-suppressed diffuse reflectance properties of the subject'"'"'s face and dimensional data that describes dimensional aspects of the subject'"'"'s face, wherein the computerized image processor filters the range map data by applying a generic face template to the data. - View Dependent Claims (6, 7)
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Specification