Image processing apparatus and image processing method
AssigneeCanon Kabushiki Kaisha
InventorAzusa Koike
Life of this patent
Estimating the term…
Abstract
An image processing apparatus comprise a correction unit configured to generate a corrected image from an input image using a correction value; an image processing unit configured to generate a first image, in which a first pattern for measuring an ambient light distribution is incorporated into the input image or the corrected image, and a second image that is different from the first image; an acquisition unit configured to acquire an ambient light distribution based on captured images of a region in which the first image and the second image are displayed while the first image and the second image are switched therebetween in the same frame; and a correction value calculation unit configured to calculate the correction value based on an ambient light distribution acquired by the acquisition unit.
Claims18
An image processing apparatus that outputs an image to a display unit, the image processing apparatus comprising:
- at least one processor and/or at least one circuit to perform the operations of the following units:
- (a) an image processing unit configured to generate (1) a first image by increasing brightness of an image with a first pattern for measuring an ambient light distribution, and (2) a second image by decreasing brightness of the image with the first pattern, the second image being different from the first image;
- (b) an outputting unit configured to output the first image and the second image to the display unit such that the first image and the second image are switched and displayed;
- (c) an acquisition unit configured to acquire (1) a first captured image corresponding to an image displayed by the display unit based on the first image and (2) a second captured image corresponding to an image displayed by the display unit based on the second image;
- and
- (d) a correction unit configured to generate a corrected image based on the first captured image and the second captured image so as to reduce an effect of an ambient light distribution with respect to an image displayed by the display unit.
An image processing method that outputs an image to a display unit, the method comprising:
- generating (1) a first image by increasing brightness of an image with a first pattern for measuring an ambient light distribution, and (2) a second image by decreasing brightness of the image with the first pattern, the second image being different from the first image;
- outputting the first image and the second image to the display unit such that the first image and the second image are switched and displayed;
- acquiring (1) a first captured image corresponding to an image displayed by the display unit based on the first image and (2) a second captured image corresponding to an image displayed by the display unit based on the second image;
- and
- generating a corrected image based on the first captured image and the second captured image so as to reduce an effect of an ambient light distribution with respect to an image displayed by the display unit.
A non-transitory computer-readable storage medium storing a program for causing a computer to execute an image processing method that outputs an image to a display unit, the method comprising:
- generating (1) a first image by increasing brightness of an image with a first pattern for measuring an ambient light distribution, and (2) a second image by decreasing brightness of the image with the first pattern, the second image being different from the first image;
- outputting the first image and the second image to the display unit such that the first image and the second image are switched and displayed;
- acquiring (1) a first captured image corresponding to an image displayed by the display unit based on the first image and (2) a second captured image corresponding to an image displayed by the display unit based on the second image;
- and
- generating a corrected image based on the first captured image and the second captured image so as to reduce an effect of an ambient light distribution with respect to an image displayed by the display unit.
An image processing apparatus that outputs an image to a display unit, the image processing apparatus comprising:
- at least one processor and/or at least one circuit to perform the operations of the following units:
- (a) an image processing unit configured to generate (1) a first image by increasing brightness of an image with a first gain and (2) a second image by decreasing brightness of the image with a second gain, for measuring an ambient light distribution;
- (b) an outputting unit configured to output the first image and the second image to the display unit such that the first image and the second image are switched and displayed;
- (c) an acquisition unit configured to acquire (1) a first captured image corresponding to an image displayed by the display unit based on the first image and (2) a second captured image corresponding to an image displayed by the display unit based on the second image;
- and
- (d) a correction unit configured to generate a corrected image based on the first captured image and the second captured image so as to reduce an effect of an ambient light distribution with respect to an image displayed by the display unit.
An image processing method that outputs an image to a display unit, the method comprising:
- generating (1) a first image by increasing brightness of an image with a first gain and (2) a second image by decreasing brightness of the image with a second gain, for measuring an ambient light distribution;
- outputting the first image and the second image to the display unit such that the first image and the second image are switched and displayed;
- acquiring (1) a first captured image corresponding to an image displayed by the display unit based on the first image and (2) a second captured image corresponding to an image displayed by the display unit based on the second image;
- and
- generating a corrected image based on the first captured image and the second captured image so as to reduce an effect of an ambient light distribution with respect to an image displayed by the display unit.
A non-transitory computer-readable storage medium storing a program for causing a computer to execute an image processing method that outputs an image to a display unit, the method comprising:
- generating (1) a first image by increasing brightness of an image with a first gain and (2) a second image by decreasing brightness of the image with a second gain, for measuring an ambient light distribution;
- outputting the first image and the second image to the display unit such that the first image and the second image are switched and displayed;
- acquiring (1) a first captured image corresponding to an image displayed by the display unit based on the first image and (2) a second captured image corresponding to an image displayed by the display unit based on the second image;
- and
- generating a corrected image based on the first captured image and the second captured image so as to reduce an effect of an ambient light distribution with respect to an image displayed by the display unit.
Dependencies are inferred from the claim text.