Image processing device
First Claim
1. An image processing apparatus for performing image-processing on image data which is formed of a predetermined number of pixel data obtained by an imaging device including a predetermined number of pixels and having a time integrating function, and for calculating a mixture ratio indicating a mixture state of the pixel data of a plurality of objects in the real world, said image processing apparatus comprising:
- pixel-data extraction means for extracting, based on a motion of a foreground object, which serves as a foreground of the plurality of objects, a plurality of mixed pixel data which are the pixel data of a predetermined number of consecutive frames in which the plurality of objects are mixed, and also for extracting, based on a motion of a background object, which serves as a background of the plurality of objects, background pixel data which is the pixel data formed of the background object and which corresponds to the mixed pixel data, the background pixel data being extracted from a frame different from the frames in which the mixed pixel data is present among the predetermined number of consecutive frames;
relational-expression generating means for generating relational expressions for the mixed pixel data and the background pixel data corresponding to the predetermined number of consecutive frames based on the extracted mixed pixel data and the extracted background pixel data; and
mixture-ratio detection means for detecting a single mixture ratio corresponding to the predetermined number of consecutive frames based on the relational expressions.
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Abstract
The present invention relates to an image processing apparatus in which a mixture ratio indicating the mixture state of a plurality of objects can be detected. A normal-equation adder 441 extracts mixed pixel data, and also extracts background pixel data corresponding to the mixed pixel data so as to generate relational expressions for the mixed pixel data and the background pixel data. A normal-equation calculator 442 detects a single mixture ratio in accordance with a predetermined number of consecutive frames based on the relational expressions. The present invention is applicable to an image processing apparatus in which a difference between a signal detected by a sensor and the real world is taken into consideration.
15 Citations
45 Claims
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1. An image processing apparatus for performing image-processing on image data which is formed of a predetermined number of pixel data obtained by an imaging device including a predetermined number of pixels and having a time integrating function, and for calculating a mixture ratio indicating a mixture state of the pixel data of a plurality of objects in the real world, said image processing apparatus comprising:
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pixel-data extraction means for extracting, based on a motion of a foreground object, which serves as a foreground of the plurality of objects, a plurality of mixed pixel data which are the pixel data of a predetermined number of consecutive frames in which the plurality of objects are mixed, and also for extracting, based on a motion of a background object, which serves as a background of the plurality of objects, background pixel data which is the pixel data formed of the background object and which corresponds to the mixed pixel data, the background pixel data being extracted from a frame different from the frames in which the mixed pixel data is present among the predetermined number of consecutive frames;
relational-expression generating means for generating relational expressions for the mixed pixel data and the background pixel data corresponding to the predetermined number of consecutive frames based on the extracted mixed pixel data and the extracted background pixel data; and
mixture-ratio detection means for detecting a single mixture ratio corresponding to the predetermined number of consecutive frames based on the relational expressions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image processing method for performing image-processing on image data which is formed of a predetermined number of pixel data obtained by an imaging device including a predetermined number of pixels and having a time integrating function, and for calculating a mixture ratio indicating a mixture state of the pixel data of a plurality of objects in the real world, said image processing method comprising:
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a pixel-data extraction step of extracting, based on a motion of a foreground object, which serves as a foreground of the plurality of objects, a plurality of mixed pixel data which are the pixel data of a predetermined number of consecutive frames in which the plurality of objects are mixed, and also of extracting, based on a motion of a background object, which serves as a background of the plurality of objects, background pixel data which is the pixel data formed of the background object and which corresponds to the mixed pixel data, the background pixel data being extracted from a frame different from the frames in which the mixed pixel data is present among the predetermined number of consecutive frames;
a relational-expression generating step of generating relational expressions for the mixed pixel data and the background pixel data corresponding to the predetermined number of consecutive frames based on the extracted mixed pixel data and the extracted background pixel data; and
a mixture-ratio detection step of detecting a single mixture ratio corresponding to the predetermined number of consecutive frames based on the relational expressions. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A recording medium in which a computer-readable program is recorded, said program being used for performing image processing on image data which is formed of a predetermined number of pixel data obtained by an imaging device including a predetermined number of pixels and having a time integrating function, and for calculating a mixture ratio indicating a mixture state of the pixel data of a plurality of objects in the real world, said program comprising:
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a pixel-data extraction step of extracting, based on a motion of a foreground object, which serves as a foreground of the plurality of objects, a plurality of mixed pixel data which are the pixel data of a predetermined number of consecutive frames in which the plurality of objects are mixed, and also of extracting, based on a motion of a background object, which serves as a background of the plurality of objects, background pixel data which is the pixel data formed of the background object and which corresponds to the mixed pixel data, the background pixel data being extracted from a frame different from the frames in which the mixed pixel data is present among the predetermined number of consecutive frames;
a relational-expression generating step of generating relational expressions for the mixed pixel data and the background pixel data corresponding to the predetermined number of consecutive frames based on the extracted mixed pixel data and the extracted background pixel data; and
a mixture-ratio detection step of detecting a single mixture ratio corresponding to the predetermined number of consecutive frames based on the relational expressions. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A program for allowing a computer, said computer performing image processing on image data which is formed of a predetermined number of pixel data obtained by an imaging device including a predetermined number of pixels and having a time integrating function, and calculating a mixture ratio indicating a mixture state of the pixel data of a plurality of objects in the real world, to execute:
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a pixel-data extraction step of extracting, based on a motion of a foreground object, which serves as a foreground of the plurality of objects, a plurality of mixed pixel data which are the pixel data of a predetermined number of consecutive frames in which the plurality of objects are mixed, and also of extracting, based on a motion of a background object, which serves as a background of the plurality of objects, background pixel data which is the pixel data formed of the background object and which corresponds to the mixed pixel data, the background pixel data being extracted from a frame different from the frames in which the mixed pixel data is present among the predetermined number of consecutive frames;
a relational-expression generating step of generating relational expressions for the mixed pixel data and the background pixel data corresponding to the predetermined number of consecutive frames based on the extracted mixed pixel data and the extracted background pixel data; and
a mixture-ratio detection step of detecting a single mixture ratio corresponding to the predetermined number of consecutive frames based on the relational expressions. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
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37. An imaging apparatus comprising:
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imaging means for outputting a subject image as image data which is formed of a predetermined number of pixel data, the subject image being obtained by performing image capturing by an imaging device having a predetermined number of pixels, each having a time integrating function;
pixel-data extraction means for extracting, based on a motion of a foreground object, which serves as a foreground of a plurality of objects in the real world contained in the image data, a plurality of mixed pixel data which are the pixel data of a predetermined number of consecutive frames in which the plurality of objects are mixed, and also for extracting, based on a motion of a background object, which serves as a background of the plurality of objects, background pixel data which is the pixel data formed of the background object and which corresponds to the mixed pixel data, the background pixel data being extracted from a frame different from the frames in which the mixed pixel data is present among the predetermined number of consecutive frames;
relational-expression generating means for generating relational expressions for the mixed pixel data and the background pixel data corresponding to the predetermined number of consecutive frames based on the extracted mixed pixel data and the extracted background pixel data; and
mixture-ratio detection means for detecting a single mixture ratio corresponding to the predetermined number of consecutive frames based on the relational expressions. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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Specification