Point cloud attribute encoding method, decoding method, encoding equipment and decoding equipment

A technology of decoding method and encoding method, which is applied in image encoding, image data processing, instruments, etc., can solve problems such as inaccurate prediction of point attribute values, poor performance of point cloud attribute encoding and decoding, etc., to improve utilization, improve encoding and The effect of decoding performance

Active Publication Date: 2020-05-12
PENG CHENG LAB +1
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Problems solved by technology

[0006] The present invention provides a point cloud attribute encoding method, a decoding method, an encoding device and a decoding device, aiming to solve the problem...

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  • Point cloud attribute encoding method, decoding method, encoding equipment and decoding equipment
  • Point cloud attribute encoding method, decoding method, encoding equipment and decoding equipment
  • Point cloud attribute encoding method, decoding method, encoding equipment and decoding equipment

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[0065] The present invention provides a point cloud attribute encoding method, decoding method, encoding device and decoding device. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0066] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operati...

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Abstract

The invention discloses a point cloud attribute encoding method, a decoding method, encoding equipment and decoding equipment. The point cloud attribute encoding method and decoding method comprise the following steps of: selecting the first K points of the current point as neighbor points according to the Morton sequence, calculating the distance between each point in the point cloud and the centroid coordinates of the neighbor points, comparing the distance with a distance threshold, and determining the attribute prediction value of the current point according to the relationship between thedistance and the distance threshold; and finally, performing attribute encoding according to the attribute prediction value or determining an attribute value of the current point according to the attribute prediction value of the current point and a point cloud attribute code stream. According to the point cloud attribute encoding method and decoding method provided by the invention, the utilization of the correlation between the geometric information and the attribute information of the point cloud can be improved, so that the encoding and decoding performance of the point cloud attribute isimproved.

Description

technical field [0001] The present invention relates to the technical field of point cloud processing, in particular to a point cloud attribute encoding method, decoding method, encoding device and decoding device. Background technique [0002] 3D point cloud is an important form of digitalization of the real world. With the rapid development of 3D scanning equipment (such as laser, radar, etc.), the accuracy and resolution of point clouds have become higher. High-precision point clouds are widely used in the construction of urban digital maps, and play a technical supporting role in many popular researches such as smart cities, unmanned driving, and cultural relics protection. The point cloud is obtained by sampling the surface of an object by a 3D scanning device. The number of points in a frame of point cloud is generally in the millions, and each point contains geometric information, color, reflectivity and other attribute information, and the amount of data is very lar...

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Application Information

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IPC IPC(8): G06T3/40G06T7/66G06T9/00H04N19/91
CPCG06T3/4092G06T7/66G06T9/00H04N19/91G06T2207/10028
Inventor 李革马闯王静邵薏婷
Owner PENG CHENG LAB
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