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US 11,122,245 B2Granted
Display apparatus, method for controlling the same and image providing apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorSung Bo Oh
Life of this patent
Estimating the term…
Abstract
A display apparatus displaying, a method for controlling the display apparatus, and an image providing apparatus. The display apparatus includes a communicator configured to receive image data of an image and brightness information of the image, a processor configured to generate a tone mapping curve by using the brightness information and to apply the tone mapping curve to the image data to provide tone mapped image data, and a display configured to display the image based on the tone-mapped image data.
Claims10
A display apparatus comprising:
- a processor configured to generate a tone mapping curve by using brightness information, received by the display apparatus, of an image, and a reference tone mapping curve, received by the display apparatus, and to apply the tone mapping curve to image data, received by the display apparatus, of the image;
- and
- a display configured to display the image based on the image data having the tone mapping curve applied thereto, wherein
- the tone mapping curve includes a linear region extending from an origin of the tone mapping curve to a knee point of the tone mapping curve and having a slope set to a ratio of a maximum brightness of the image to a maximum brightness of the display and maintained at the ratio for the entire linear region, and a continuously non-linear region extending from the knee point to a point of the tone mapping curve corresponding to the maximum brightness of the display, to thereby map a brightness range of the image to a brightness range of the display,
- the processor is configured to generate the tone mapping curve by increasing a distance between the origin of the tone mapping curve and the knee point of the tone mapping curve when the maximum brightness of the display is greater than a maximum brightness corresponding to the reference tone mapping curve, as compared to a case in which the maximum brightness of the display is less than the maximum brightness corresponding to the reference tone mapping curve, and
- the processor is configured to generate the tone mapping curve by reducing a distance between the origin and the knee point when the maximum brightness of the display is less than the maximum brightness corresponding to the reference tone mapping curve, as compared to the case in which the maximum brightness of the display is greater than the maximum brightness corresponding to the reference tone mapping curve.
3 more elements
A method comprising:
- by a display apparatus,
- receiving image data of an image, and-brightness information of the image, and a reference tone mapping curve;
- generating a tone mapping curve by using the brightness information and the reference tone mapping curve;
- applying the tone mapping curve to the image data;
- and
- displaying, on a display, the image based on the image data having the tone mapping curve applied thereto, wherein
- the tone mapping curve includes a linear region extending from an origin of the tone mapping curve to a knee point of the tone mapping curve and having a slope set to a ratio of a maximum brightness of the image to a maximum brightness of the display and maintained at the ratio for the entire linear region, and a continuously non-linear region extending from the knee point to a point of the tone mapping curve corresponding to the maximum brightness of the display, to thereby map a brightness range of the image to a brightness range of the display,
- the generating the tone mapping curve generates the tone mapping curve by increasing a distance between the origin of the tone mapping curve and the knee point of the tone mapping curve when the maximum brightness of the display is greater than a maximum brightness corresponding to the reference tone mapping curve, as compared to a case in which the maximum brightness of the display is less than the maximum brightness corresponding to the reference tone mapping curve, and
- the generating the tone mapping curve generates the tone mapping curve by reducing a distance between the origin and the knee point when the maximum brightness of the display is less than the maximum brightness corresponding to the reference tone mapping curve, as compared to the case in which the maximum brightness of the display is greater than the maximum brightness corresponding to the reference tone mapping curve.
6 more elements
Dependencies are inferred from the claim text.