Image correction system and correcting method
View Patent ↗An image correction system includes an image capturer, operable to capture an object image and to generate image data based on the object image, a first storage, adapted to store the image data, a timing signal generator, operable to periodically generate timing signals, an image processor, operable to periodically store the image data into the first storage in accordance with each of the timing signals, a detector, operable to periodically detect movement of the image capturer and to generate movement data based on the detected movement, and a second storage, adapted to periodically store the movement data in association with timing data based on each of the timing signals.
1. An image correction system comprising:
an image capturer, operable to capture an object image and to generate image data based on the object image;
a first storage, adapted to store the image data;
a timing signal generator, operable to periodically generate timing signals,
an image processor, operable to periodically store the image data into the first storage in accordance with each of the timing signals;
a detector, operable to periodically detect movement of the image capturer and to generate movement data based on the detected movement;
a second storage, adapted to periodically store the movement data in association with timing data based on each of the timing signals; and
a correction processor operable to correct the image data corresponding to a first time period that is defined between a first one of the timing signals and a second one of the timing signals which is subsequent to the first one of the timing signals based on the movement data corresponding to a second time period that is defined between the first one of the timing signals and a third one of the timing signals which is followed by the first one of the timing signals.
2. The image correction system according to claim 1 , wherein:
the movement data corresponding to the second time period indicates a shift amount included in the image data corresponding to the first time period, and
in a case where the shift amount is no more than a predetermined amount, the image data corresponding to the first time period is not corrected.
3. The image correction system according to claim 1 , further comprising:
a buffer memory, adapted to temporarily store the image data generated by the image capturer, wherein
the image processor reads out the image data from the buffer memory and stores the image data into the first storage.
4. The image correction system according to claim 1 , wherein:
the first storage stores the image data in time-series order,
the second storage stores the movement data and the timing data in the time-series order, and
the correction processor reads out the image data from the first storage and the movement data and the timing date from the second storage in the time-series order.
5. The image correction system according to claim 1 , wherein:
the movement data corresponding to the second time period includes a movement element being attributable to panning, and
the correction processor eliminates the movement element from the movement data corresponding to the second time period by filtering before correcting the image data corresponding to the first time period.
6. The image correction system according to claim 1 , wherein
the detector includes a sensor for detecting the movement of the image capturer and a sampling unit for periodically sampling a value of the movement detected by the sensor.
7. The image correction system according to claim 6 , wherein
the sensor includes a first gyro sensor detecting a first angular velocity of the image capturer around a first axis that is perpendicular to an optical axis of the image capturer and a second gyro sensor detecting a second angular velocity of the image capturer around a second axis that is perpendicular to the optical axis and the first axis.
8. A correcting method comprising:
capturing an object image by a image capturer;
generating image data based on the object image;
periodically generating timing signals;
storing the image data into a first storage in accordance with each of the timing signals;
periodically detecting movement of the image capturer;
generating movement data based on the detected movement;
periodically storing the movement data in association with timing data based on each of the timing signals; and
correcting the image data corresponding to a first time period that is defined between a first one of the timing signals and a second one of the timing signals which is subsequent to the first one of the timing signals based on the movement data corresponding to a second time period that is defined between the first one of the timing signals and a third one of the timing signals which is followed by the first one of the timing signals.