Image display apparatus, image processing apparatus, image display method, and image processing method
AssigneeCanon Kabushiki Kaisha
InventorNaoki Kojima
Life of this patent
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Abstract
An adder adds, to a luminance value indicated by the image signal of the nth frame, a correction value corresponding to a combination of a luminance value indicated by the image signal of the nth frame and one indicated by the image signal of the (n+1)th frame. The adder outputs an image signal having the luminance value after addition as the image signal of the nth frame.
Claims11
An image display apparatus comprising:
- a holding unit that holds, for each combination of a possible luminance value of an image signal of a preceding frame to be reproduced first out of two adjacent frames and a possible luminance value of an image signal of a succeeding frame to be reproduced later out of the two frames, a correction value used to correct a luminance value indicated by the image signal of the preceding frame to make the luminance value indicated by the image signal of the preceding frame come close to a luminance value indicated by the image signal of the succeeding frame;
- a first acquisition unit that acquires image signals of successive frames;
- a second acquisition unit that acquires, from said holding unit, a correction value corresponding to a combination of a luminance value indicated by an image signal of an nth (n is a natural number of not smaller than 1) frame acquired at the nth turn by said first acquisition unit and a luminance value indicated by an image signal of an (n+1)th frame acquired at the (n+1)th turn by said first acquisition unit;
- and
- an output unit that adds the correction value acquired by said second acquisition unit to the luminance value indicated by the image signal of the nth frame, and outputs an image signal having a luminance value after addition as an image signal of the nth frame.
An image display method performed by an image display apparatus including a holding unit that holds, for each combination of a possible luminance value of an image signal of a preceding frame to be reproduced first out of two adjacent frames and a possible luminance value of an image signal of a succeeding frame to be reproduced later out of the two frames, a correction value used to correct a luminance value indicated by the image signal of the preceding frame to make the luminance value indicated by the image signal of the preceding frame come close to a luminance value indicated by the image signal of the succeeding frame, the method comprising:
- a first acquisition step of acquiring image signals of successive frames;
- a second acquisition step of acquiring, from the holding unit, a correction value corresponding to a combination of a luminance value indicated by an image signal of an nth (n is a natural number of not smaller than 1) frame acquired at the nth turn in the first acquisition step and a luminance value indicated by an image signal of an (n+1)th frame acquired at the (n+1)th turn in the first acquisition step;
- and
- an output step of adding the correction value acquired in the second acquisition step to the luminance value indicated by the image signal of the nth frame, and outputting an image signal having a luminance value after addition as an image signal of the nth frame.
An image processing apparatus comprising:
- an input unit which inputs image signals of successive frames;
- a correction unit which corrects, based on a luminance value indicated by an image signal of a preceding frame out of two adjacent frames in the frames and a luminance value indicated by an image signal of a succeeding frame, the luminance value indicated by the image signal of the preceding frame to make the luminance value indicated by the image signal of the preceding frame come close to the luminance value indicated by the image signal of the succeeding frame;
- and
- an output unit which outputs the image signal of the preceding frame having the luminance value corrected by said correction unit.
An image processing method comprising:
- an input step of inputting image signals of successive frames;
- a correction step of correcting, based on a luminance value indicated by an image signal of a preceding frame out of two adjacent frames in the frames and a luminance value indicated by an image signal of a succeeding frame, the luminance value indicated by the image signal of the preceding frame to make the luminance value indicated by the image signal of the preceding frame come close to the luminance value indicated by the image signal of the succeeding frame;
- and
- an output step of outputting the image signal of the preceding frame having the luminance value corrected in the correction step.
Dependencies are inferred from the claim text.