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US 10,708,564 B2Granted
Image processing apparatus and image processing method based on metadata
AssigneeSamsung Electronics Co., Ltd.
InventorsSeung-ho Park, Seung-hoon Han, Gui-won Seo, Ho-cheon Wey, Byung-seok Min
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Abstract
Provided are an image processing apparatus and method, which use a maximum display luminance value of a mastering display and a maximum display luminance value of a target display according to luminance characteristics of a current scene of an encoded image.
Claims19
An image processing apparatus comprising:
- a receiver configured to receive at least one from among first metadata indicating a maximum display luminance value of a mastering display according to luminance characteristics of an image and second metadata indicating a maximum display luminance value of a target display according to the luminance characteristics of the image;
- and
- a controller configured to:
- divide an encoded image into one or more scenes,
- obtain luminance characteristics of a current scene comprising an average luminance value of the current scene,
- determine a central pixel of a maximum luminance region of the current scene by maximizing a sum of luminance values of pixels included in the maximum luminance region,
- when the first metadata is obtained, obtain the maximum display luminance value of the mastering display according to an area of the maximum luminance region and the luminance characteristics of the current scene, based on the first metadata, and
- when the second metadata is obtained, obtain the maximum display luminance value of the target display according to the area of the maximum luminance region and the luminance characteristics of the current scene, based on the second metadata.
5 more elements
An image processing method comprising:
- receiving at least one from among first metadata indicating a maximum display luminance value of a mastering display according to luminance characteristics of an image and second metadata indicating a maximum display luminance value of a target display according to the luminance characteristics of the image;
- dividing an encoded image into one or more scenes;
- obtaining luminance characteristics of a current scene comprising an average luminance value of the current scene;
- determining a central pixel of a maximum luminance region of the current scene by maximizing a sum of luminance values of pixels included in the maximum luminance region;
- when the first metadata is obtained, obtaining the maximum display luminance value of the mastering display according to an area of the maximum luminance region and the luminance characteristics of the current scene, based on the first metadata;
- and
- when the second metadata is obtained, obtaining the maximum display luminance value of the target display according to the area of the maximum luminance region and the luminance characteristics of the current scene, based on the second metadata.
4 more elements
Dependencies are inferred from the claim text.