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US 2014/0112595 A1Published application
Low-frequency compression of high dynamic range images
AssigneeMarvell World Trade Ltd.
InventorSamson Huang
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Abstract
Methods and apparatuses for adjusting a global dynamic range of an image are described. An image is decomposed into (i) a low spatial frequency component and (ii) a high spatial frequency component. The global dynamic range of the low spatial frequency component is adjusted to produce an adjusted low spatial frequency component. The image is reconstructed with (i) the adjusted low spatial frequency component and (ii) the high spatial frequency component to thereby produce a processed image.
Claims20
A method of adjusting a global dynamic range of an image, the method comprising:
- decomposing the image into (i) a low spatial frequency component and (ii) a high spatial frequency component;
- adjusting the global dynamic range of the low spatial frequency component to produce an adjusted low spatial frequency component;
- and
- reconstructing the image with (i) the adjusted low spatial frequency component and (ii) the high spatial frequency component to thereby produce a processed image.
1 more element
An apparatus comprising:
- a display device;
- and
- an image processing component configured to:
- decompose a high dynamic range (HDR) image into (i) a low spatial frequency component and (ii) a high spatial frequency component;
- adjust the dynamic range of the low spatial frequency component to produce an adjusted low spatial frequency component;
- and
- reconstruct the HDR image with (i) the adjusted low spatial frequency component and (ii) the high spatial frequency component to produce a processed image for display on the display device.
4 more elements
Dependencies are inferred from the claim text.