Method of decreasing noise of a depth image, image processing apparatus and image generating apparatus using thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsByongmin KANG, Ouk CHOI
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Abstract
Provided are a method of decreasing the noise of a depth image which predicts the noise for each pixel of the depth image using the difference in depth values of two adjacent pixels of the depth image and the reflectivity of each pixel of an intensity image, and an image processing apparatus and an image generating apparatus that use the method.
Claims20
A method of decreasing noise of a depth image representing a distance between an image pickup apparatus and a subject, the method comprising:
- acquiring an intensity image representing a reflectivity of the subject;
- acquiring the depth image corresponding to the intensity image;
- predicting noise for each pixel of the depth image using a difference in depth values of two adjacent pixels of the acquired depth image and a reflectivity of each pixel of the intensity image;
- and
- eliminating the noise of the depth image by considering the predicted noise.
An image processing apparatus for decreasing noise of a depth image representing the distance between an image pickup apparatus and a subject, the image processing apparatus comprising:
- an intensity acquisition unit to acquire intensity image representing the reflectivity of the subject;
- a depth image acquisition unit to acquire the depth image corresponding to the intensity image;
- a noise prediction unit to predict noise of each pixel of the depth image by using the difference in the depth values of two adjacent pixels of the acquired depth image and the reflectivity of each pixel of the intensity image;
- and
- a noise elimination unit to eliminate the noise of the depth image considering the predicted noise.
An image generating apparatus comprising:
- an image pickup apparatus detecting an image signal for a subject from a return reflection beam reflected after a predetermined beam is irradiated to the subject;
- and
- an image processing apparatus acquiring the depth image representing the distance between the image pickup apparatus and the subject and an intensity image representing the reflectivity of the subject from the detected image signal, predicting the noise for each pixel of the depth image using a difference in depth values of two adjacent pixels of the acquired depth image and a reflectivity of each pixel of the intensity image, and eliminating the noise of the depth image by considering the predicted noise.
Dependencies are inferred from the claim text.