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US 10,567,669 B2Granted
Display apparatus and control method thereof
AssigneeCanon Kabushiki Kaisha
InventorMuneki Ando
Life of this patent
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Abstract
A display apparatus includes: an acquiring unit configured to acquire characteristic information on a correspondence relationship between a gradation value and image brightness of input image data; a converting unit configured to generate display image data by converting gradation values of the input image data based on the characteristic information and a predetermined correspondence relationship between a gradation value of the display image data and display brightness; and a displaying unit configured to display an image based on the display image data, wherein the converting unit converts the gradation values so that a linear characteristic is implemented in a first range, and a non-linear characteristic is implemented in a second range.
Claims15
A display apparatus, comprising:
- an acquiring unit configured to acquire characteristic information on a correspondence relationship between a gradation value of input image data and image brightness which is brightness of the input image data;
- a converting unit configured to generate display image data by converting each gradation value of the input image data based on the characteristic information and a predetermined correspondence relationship between a gradation value of the display image data and display brightness on a screen;
- and
- a displaying unit configured to display an image based on the display image data on the screen, wherein
- the converting unit converts each gradation value of the input image data so that
- in a first range which is a range in which image brightness is not more than a first brightness, a linear characteristic, in which the display brightness increases approximately linearly with the increase of the image brightness, is implemented,
- in a second range which is a range in which image brightness is not less than the first brightness and not more than second brightness, a non-linear characteristic, in which the display brightness increases up to an upper limit with the increase of the image brightness more gently than in the linear characteristic in the first range, is implemented, and
- in a third range which is a range in which image brightness is not less than the second brightness, a characteristic in which the upper limit of the display brightness corresponds to each image brightness, is implemented,
- wherein the acquiring unit and the converting unit are implemented via at least one processor.
6 more elements
A control method of display apparatus configured to display an image based on display image data on a screen, the control method comprising:
- acquiring characteristic information on a correspondence relationship between a gradation value of input image data and image brightness which is brightness of the input image data;
- and
- generating the display image data by converting each gradation value of the input image data based on the characteristic information and a predetermined correspondence relationship between a gradation value of the display image data and display brightness on the screen, wherein
- in the generating, each gradation value of the input image data is converted so that
- in a first range which is a range in which image brightness is not more than a first brightness, a linear characteristic, in which the display brightness increases approximately linearly with the increase of the image brightness, is implemented, and
- in a second range which is a range in which image brightness is not less than the first brightness and not more than second brightness, a non-linear characteristic, in which the display brightness increases up to an upper limit with the increase of the image brightness more gently than in the linear characteristic in the first range, is implemented, and
- in a third range which is a range in which image brightness is not less than the second brightness, a characteristic in which the upper limit of the display brightness corresponds to each image brightness, is implemented.
4 more elements
An image processing apparatus, comprising:
- an acquiring unit configured to acquire characteristic information on a correspondence relationship between a gradation value of input image data and image brightness which is brightness of the input image data;
- and
- a converting unit configured to generate display image data by converting each gradation value of the input image data based on the characteristic information and a predetermined correspondence relationship between a gradation value of the display image data and display brightness on a screen, wherein
- the converting unit converts each gradation value of the input image data so that
- in a first range which is a range in which image brightness is not more than a first brightness, a linear characteristic, in which the display brightness increases approximately linearly with the increase of the image brightness, is implemented,
- in a second range which is a range in which image brightness is not less than the first brightness and not more than second brightness, a non-linear characteristic, in which the display brightness increases up to an upper limit with the increase of the image brightness more gently than in the linear characteristic in the first range, is implemented, and
- in a third range which is a range in which image brightness is not less than the second brightness, a characteristic in which the upper limit of the display brightness corresponds to each image brightness, is implemented,
- wherein the acquiring unit and the converting unit are implemented via at least one processor.
5 more elements
Dependencies are inferred from the claim text.