Luminance adjustment between different resolutions
AssigneeLx Semicon Co., Ltd.
InventorBo Sung Kim
Life of this patent
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Abstract
According to an embodiment of the disclosure, an image processing device, which is capable of detecting a distortable pattern that is likely to be distorted, includes a block luminance acquirer configured to divide a plurality of pixels constituting an input image into a plurality of blocks and acquire luminance for each of the plurality of blocks, a pattern detector configured to analyze a luminance correlation between the plurality of blocks and detect a distortable pattern, and a luminance corrector configured to correct the luminance of the plurality of pixels or bypass the plurality of pixels according to whether the distortable pattern is detected.
Claims16
An image processing device comprising one or more processors having instructions stored in non-transitory computer-readable media, wherein the instructions, when executed, cause the one or more processors to:
- divide a plurality of pixels constituting an input image into a plurality of blocks and acquire luminance for each of the plurality of blocks;
- obtain an average luminance value of the plurality of pixels constituting the input image as total luminance;
- analyze a luminance correlation between the plurality of blocks and detect a distortable pattern;
- determine that the distortable pattern is detected and determine a total luminance correction mode to be a correction mode in response to the distortable pattern being detected;
- and
- correct luminance of the plurality of pixels according to the correction mode,
- wherein the distortable pattern includes at least one of a horizontal gradation pattern in which luminance gradually changes in a first direction or a vertical gradation pattern in which luminance gradually changes in a second direction different from the first direction, and
- wherein, when the total luminance correction mode is determined to be the correction mode, the one or more processors are configured to determine a total gain value based on the total luminance and correct the luminance of the plurality of pixels based on the total gain value.
A method of driving an image processing device, the method comprising:
- extracting luminance for each of a plurality of pixels constituting an input image;
- obtaining an average luminance value of the plurality of pixels constituting the input image as total luminance;
- dividing the plurality of pixels into a plurality of blocks and acquiring luminance for each of the plurality of blocks using the luminance for each of the plurality of pixels;
- analyzing a luminance correlation between the plurality of blocks and detecting a distortable pattern;
- determining that the distortable pattern is detected and determining bypass mode, and a total luminance correction mode to be a correction mode in response to when the distortable pattern being detected;
- and
- correcting luminance of the plurality of pixels according to the correction mode,
- wherein the distortable pattern includes at least one of a horizontal gradation pattern in which luminance gradually changes in a first direction or a vertical gradation pattern in which luminance gradually changes in a second direction different from the first direction, and
- wherein, when the total luminance correction mode is determined to be the correction mode, determining a total gain value based on the total luminance and correcting the luminance of the plurality of pixels based on the total gain value.
Dependencies are inferred from the claim text.