Image display apparatus, image processing apparatus, image processing 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.
Claims13
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 than the preceding frame 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 more closely match 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 than the preceding frame 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 more closely match 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 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 more closely match 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 performed by an image processing apparatus including an input unit, a correction unit, and an output unit, the method comprising:
- an input step, performed by the input unit, of inputting image signals of successive frames;
- a correction step, performed by the correction unit, 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 more closely match to the luminance value indicated by the image signal of the succeeding frame;
- and
- an output step, performed by the output unit, of outputting the image signal of the preceding frame having the luminance value corrected in the correction step.
An image processing apparatus comprising:
- an acquiring unit configured to acquire image signals of successive frames;
- a generating unit configured to generate an intermediate image frame to be reproduced between a first image frame and a second image frame in the successive frames, based on image signals of the first and second image frames;
- a determining unit configured to determine whether to correct a luminance value indicated by an image signal of the intermediate image frame, based on the luminance value indicated by the image signal of the first image frame and a luminance value indicated by an image signal of the second image frame;
- and
- a processing unit configured to correct the luminance value indicated by the image signal of the intermediate image frame to make a luminance corresponding to a value indicated by the image signal of the first image frame more closely match a luminance corresponding to a value indicted by the image signal of the second image frame.
Dependencies are inferred from the claim text.