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US 11,637,963 B2Granted
Image sensor and image processing system comprising the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJeongguk Lee, Yunseok Choi, Dochang Ahn, Sunghyuk Yim
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Abstract
An image sensor and an image processing system in which the image sensor includes a sensing unit configured to generate a plurality of images having different luminances with respect to a same object, a pre-processor configured to merge n images (n is a natural number equal to or greater than 2) except for at least one of the plurality of images to generate a merged image, and an interface circuit configured to output the at least one image and the merged image to an external processor.
Claims18
An image processing system comprising:
- an image sensor comprising:
- a pixel array and a readout circuit configured to generate a first image of an object based on a first exposure time, a second image of the object based on a second exposure time, and a third image of the object based on a third exposure time, the first exposure time, the second exposure time, and the third exposure time being different from each other and the first image having a first luminance, the second image having a second luminance, and the third image having a third luminance, wherein the first luminance, the second luminance, and the third luminance are different from each other;
- a pre-processor configured to perform linearization processing on the first image and the second image to generate a merged image with an increased number of bits of a pixel value;
- and:
- an interface circuit configured to output first image data based on the merged image and second image data based on the third image;
- and
- an image processor configured to receive the first image data and the second image data and generate a high dynamic range (HDR) image having an increased dynamic range based on the first image, the second image, and the third image using the first image data and the second image data.
4 more elements
An image processing system comprising:
- an image sensor configured to generate a first image based on a first exposure time, a second image based on a second exposure time, and a third image based on a third exposure time, wherein the first exposure time, the second exposure time, and the third exposure time are different from each other, merge the first image and the second image to generate a merged image, output first image data based on the merged image and second image data based on the third image;
- and
- an image processor configured to receive the first image data and the second image data and generate a high dynamic range (HDR) image having an increased dynamic range based on the first image, the second image, and the third image using the first image data and the second image data,
- wherein the image sensor comprises a pre-processor configured to perform linearization processing on the first image and the second image to generate the merged image with an increased number of bits of a pixel value.
1 more element
An image processing system comprising:
- an image sensor comprising
- a pixel array configured to convert optical signals incident thereon into electrical signals based on different exposure times;
- a readout circuit configured to generate a first exposure image having a first exposure time, a second exposure image having a second exposure time, and a third exposure image having a third exposure time based on the electrical signals, wherein the first exposure time is a longest exposure time among the first exposure time, the second exposure time, and the third exposure time, and wherein the third exposure time is a shortest exposure time among the first exposure time, the second exposure time, and the third exposure time;
- a pre-processor configured to perform linearization processing to generate a merged image based on the second exposure image and the third exposure image, the merged image having an increased number of bits of a pixel value;
- and
- an interface circuit configured to output first image data based on the merged image and second image data based on the first exposure image;
- and
- an image processor configured to receive the first image data and the second image data and generate a high dynamic range (HDR) image having an increased dynamic range based on the first exposure image, the second exposure image, and the third exposure image using the first image data and the second image data.
5 more elements
Dependencies are inferred from the claim text.