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US 8,620,030 B2Granted
Image processing apparatus and image processing method
AssigneeCanon Kabushiki Kaisha
InventorYasuyoshi Miyazaki
Life of this patent
Estimating the term…
Abstract
An apparatus stores a luminance signal and a color signal extracted from a tracking area in image data and determines a correlation with the stored luminance signal, thereby extracting an area where a specified object exists in another image data to update the tracking area using the position information of the extracted area. If a sufficient correlation cannot be obtained from the luminance signal, the apparatus makes a comparison with the stored color signal to determine whether the specified object is lost. The apparatus updates the luminance signal every time the tracking area is updated, but does not update the color signal even if the tracking area is updated or updates the color signal at a period longer than a period at which the luminance signal is updated.
Claims12
An apparatus comprising:
- a storage unit configured to store first signals and second signals extracted from a tracking area in first image data;
- and
- a detection unit configured to extract an area having signals in which are high correlation with the first signals from second image data and to update the tracking area with the extracted area;
- wherein when the detection unit cannot extract an area having signals in which are high correlation with the first signals from the second image data, the detection unit determines whether an area, having signals in which are high correlation with the second signals, can be extracted from the third image data, and if the area cannot be extracted, the detection unit resets the tracking area, and if the area can be extracted, the detection unit updates the tracking area with the extracted area,
- wherein, when the tracking area is updated, the storage unit updates the first signals with the first signals extracted from the updated tracking area,
- wherein, the detection unit extracts an area having signals in which are high correlation with the updated first signals from fourth image data, and, wherein the detection unit determines whether an area, having signals in which are high correlation with the second signals extracted from the first image, can be extracted from the fifth image data when the detection unit cannot extract the area having signals in which are high correlation with the updated first signals from fourth image data.
3 more elements
A method comprising:
- storing first signals and second signals extracted from a tracking area in first image data;
- extracting an area having signals in which are high correlation with the first signals from second image data and to update the tracking area with the extracted area;
- determining whether an area, having signals in which are high correlation with the second signals, can be extracted from third image data when an area, having signals in which are high correlation with the first signals, cannot be extracted from the second image data;
- resetting the tracking area when the area, having signals in which are high correlation with the second signals, cannot be extracted from third image data;
- updating the tracking area with the extracted area when the area, having signals in which are high correlation with the second signals, can be extracted from third image data;
- and
- updating the first signals with the first signals extracted from the updated tracking area when the tracking area is updated,
- extracting an area having signals in which are high correlation with the updated first signals from fourth image data;
- and
- determining whether an area having signals in which are high correlation with the second signals extracted from the first image, can be extracted from fifth image data when the area having signals in which are high correlation with the updated first signals cannot be extracted from fourth image data.
7 more elements
A non-transitory computer readable medium storing a computer-executable program of instructions for causing a computer to perform a method comprising:
- storing first signals and second signals extracted from a tracking area in first image data;
- extracting an area having signals in which are high correlation with the first signals from second image data and to update the tracking area with the extracted area;
- determining whether an area, having signals in which are high correlation with the second signals, can be extracted from third image data when an area, having signals in which are high correlation with the first signals, cannot be extracted from the second image data;
- resetting the tracking area when the area, having signals in which are high correlation with the second signals, cannot be extracted from third image data;
- updating the tracking area with the extracted area when the area, having signals in which are high correlation with the second signals, can be extracted from third image data;
- updating the first signals with the first signals extracted from the updated tracking area when the tracking area is updated,
- extracting an area having signals in which are high correlation with the updated first signals from fourth image data;
- and,
- determining whether an area having signals in which are high correlation with the second signals extracted from the first image, can be extracted from fifth image data when an area having signals in which are high correlation with the updated first signals cannot be extracted from fourth image data.
6 more elements
Dependencies are inferred from the claim text.