Image processing apparatus and image processing method
First Claim
1. An image processing apparatus for acquiring a shape of a target object contained in a series of moving pictures, comprising:
- an image capture unit configured to take in time-series images obtained in time series by shooting a target object;
a feature point extraction unit configured to extract feature points of said target object from said time-series images taken in by said image capture unit;
a motion information extraction unit configured to determine a change of a position and posture of said target object in each point of time in said time-series images by correlating feature points contained in the image at a point of time with those at another point of time in said time-series images extracted by said feature point extraction unit to obtain correlated feature points, and configured to analyze positional coordinate information on the correlated feature points;
an inter-image linear combination coefficient calculating unit configured to calculate a linear combination coefficient of image luminance between said time-series images by analyzing information on luminance at the feature points correlated by said motion information extraction unit and luminance around the correlated feature points; and
a distance information detecting unit configured to estimate information on a distance to each point of said target from the position and posture of said target object determined by said motion information extraction unit at each point of time in said time-series images and the linear combination coefficient of image luminance between said time-series images, the linear combination coefficient being calculated by said inter-image linear combination coefficient calculating unit.
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Abstract
A moving picture processing apparatus comprises an image capture unit for taking in time-series images (moving picture series) of a target object, a feature point extraction unit for extracting feature points constituting the surface of the object whose model is to be made, a three-dimensional position information extraction unit for finding three-dimensional position information on the feature points by correlating the feature points contained in the image at a point in time with those at another point in time in the time-series images and analyzing positional coordinate information on the correlated feature points, a three-dimensional patch group generating unit for generating three-dimensional patch groups constituting the surface of the target object on the basis of the feature points for which the three-dimensional position information has been found and supplying the three-dimensional patch groups as information on a model of the target object to an output section.
202 Citations
20 Claims
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1. An image processing apparatus for acquiring a shape of a target object contained in a series of moving pictures, comprising:
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an image capture unit configured to take in time-series images obtained in time series by shooting a target object; a feature point extraction unit configured to extract feature points of said target object from said time-series images taken in by said image capture unit; a motion information extraction unit configured to determine a change of a position and posture of said target object in each point of time in said time-series images by correlating feature points contained in the image at a point of time with those at another point of time in said time-series images extracted by said feature point extraction unit to obtain correlated feature points, and configured to analyze positional coordinate information on the correlated feature points; an inter-image linear combination coefficient calculating unit configured to calculate a linear combination coefficient of image luminance between said time-series images by analyzing information on luminance at the feature points correlated by said motion information extraction unit and luminance around the correlated feature points; and a distance information detecting unit configured to estimate information on a distance to each point of said target from the position and posture of said target object determined by said motion information extraction unit at each point of time in said time-series images and the linear combination coefficient of image luminance between said time-series images, the linear combination coefficient being calculated by said inter-image linear combination coefficient calculating unit. - View Dependent Claims (2, 5, 6, 7, 8, 9, 10, 11, 12)
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3. An image processing method for acquiring a shape of a target object contained in a series of moving pictures, comprising the steps of:
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taking in images obtained in time-series by shooting a target object; extracting feature points of said target object from said time-series images taken in at the image taking-in step; determining a change of position and posture of said target object in each point in time in said time-series images by correlating the feature points contained in the image at a point of time with those at another point of time in said time-series images extracted in said feature point extracting step to obtain correlated feature points and analyzing positional coordinate information on the correlated feature points; calculating a linear combination coefficient of image luminance between said time-series images by analyzing information on luminance at the correlated feature points and luminance around the correlated feature points; and estimating information on a distance to each point of said determined target object from the position and posture of said target object at each point of time in said time-series images and the linear combination coefficient of image luminance between said calculated time-series images. - View Dependent Claims (4, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification