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US 12,739,531 B2Granted
Depth image sensing device, image signal processor and image signal processing method
AssigneeSK hynix Inc.
InventorToshiaki Nagai
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Abstract
A depth image sensing device includes a line memory configured to store depth data, in units of a line group, generated by detecting a dot pattern light reflected from a scene, a dot center pixel detector configured to determine a dot center pixel having a highest intensity of depth data in each of a plurality of kernels included in the line group, and a dot data memory configured to store dot center pixel information including a position of the dot center pixel.
Claims9
An image signal processor comprising:
- a dot center pixel detector configured to determine a dot center pixel having a highest intensity of depth data in each of a plurality of kernels;
- and
- a depth image generator configured to calculate a distance to a scene using the depth data of the dot center pixel, and
- wherein the dot center pixel detector includes a valid pixel determination unit configured to determine whether the dot center pixel is a valid pixel by comparing the intensity of the depth data of the dot center pixel with a valid threshold value.
1 more element
An image signal processing method comprising:
- determining at least one dot center pixel having a highest intensity of depth data in each of a plurality of kernels;
- determining whether the dot center pixel is a valid pixel by comparing the intensity of the depth data of the dot center pixel with a valid threshold value;
- removing an overlapped dot center pixel from among the dot center pixels, which are valid pixels;
- and
- calculating a distance to a scene using the depth data of the dot center pixel.
2 more elements
Dependencies are inferred from the claim text.