Method and apparatus for encoding or decoding a set of three-dimensional data points
A technology of three-dimensional data and encoding method, which is applied in the field of information processing, can solve the problems of restricting compression rate, obvious time complexity cost, and large time overhead, so as to achieve the effect of improving compression rate and avoiding high encoding complexity
Active Publication Date: 2022-03-15
SZ DJI TECH CO LTD
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[0005] However, this encoding method needs to build a hierarchical structure. When selecting the adjacent reference point for the position of each 3D data point set, it needs to traverse all the 3D data points multiple times. This method will have a large time in encoding and decoding. Overhead, especially when the amount of data in the three-dimensional data point set is large, the cost of this time complexity is particularly obvious
And the header information about the attributes in the encoded code stream needs to describe the relevant information about the layered coding attributes. When the number of three-dimensional data points is not very large, the proportion of the compressed code stream will be Relatively large, thus becoming a bottleneck restricting the compression rate
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[0037] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0038] Unless otherwise specified, all technical and scientific terms used in the embodiments of the present application have the same meaning as commonly understood by those skilled in the technical field of the present application. The terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the scope of the present application.
[0039] The 3D data point set may be composed of discrete 3D data points, a...
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Embodiments of the present application provide a method and device for encoding or decoding a three-dimensional data point set, which can simplify the encoding method and reduce the time overhead of encoding and decoding, and can increase the compression rate. The method includes: encoding the position coordinates of at least one three-dimensional data point in the three-dimensional data point set to obtain the first binary code stream; according to the sequence of position coordinates encoded by the position coordinates of the at least one three-dimensional data point , performing binary encoding on the attributes of the at least one three-dimensional data point to obtain a second binary code stream; performing entropy on the first binary code stream and the second binary code stream respectively coding.
Description
[0001] Copyright statement [0002] The disclosure of this patent document contains material that is protected by copyright. This copyright belongs to the copyright owner. The copyright owner has no objection to the reproduction by anyone of the patent document or the patent disclosure as it exists in the official records and files of the Patent and Trademark Office. technical field [0003] The present application relates to the field of information processing, and more particularly, to a method and device for encoding or decoding a three-dimensional data point set. Background technique [0004] A 3D data point set is a form of representation of a 3D object or scene. It is composed of a group of discrete points that are randomly distributed in space and express the spatial structure and surface properties of a 3D object or scene. The data of a 3D data set point can be Including the three-dimensional coordinates describing the coordinate information, and further including ...
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IPC IPC(8): H04N19/13H04N19/124H04N19/184H04N19/42
CPCH04N19/13H04N19/184H04N19/124H04N19/42H04N19/96H04N19/176G06T9/001G06T9/005G06T9/40
Inventor 李璞郑萧桢
Owner SZ DJI TECH CO LTD