Image coding method and device

An image encoding and encoding stream technology, applied in the field of image encoding methods and devices, can solve the problems of 3D digital content promotion obstacles, playback, no way, etc., and achieve the effect that the encoding method is simple and practical, and has wide application prospects.

Active Publication Date: 2019-08-06
THE HONG KONG POLYTECHNIC UNIV
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Problems solved by technology

[0003] The present invention aims at the problem that there is no general storage standard for 3D pictures at present, which will cause the incompatibility of films, which cannot be played on every terminal device, and hinders the promotion of 3D digital content, and provides An image coding method and device

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Embodiment Construction

[0029] In the field of 3D computer graphics, a depth map is a picture containing the observation distance between the observation point and the object surface. Depth maps can be used in many situations, such as defocus, rendering of 3D scenes, shadow maps, and other applications related to viewing distance.

[0030] In this application, we disclose a method for encoding a depth map. The encoding method is based on a hierarchical structure and a binary search method to determine the focal plane with a pixel closest to the observation point, and then calculate the depth value of the pixel in the depth map. Further, we specifically elaborated the encoding and decoding process of this encoding method through related flow charts. Finally, we also discuss the advantages and potential applications of our encoding method.

[0031] figure 1 A schematic diagram of a hierarchical structure.

[0032] Such as figure 1 As shown, F(x) is defined as the focal plane whose depth of field v...

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Abstract

The invention provides a method and a device for image coding. The image coding method comprises the following steps: S1, a field depth map is acquired, wherein the field depth map comprises multiple pixels, and each pixel comprises a field depth value; a focal plane of a pixel, nearest an observation point, of an object in the field depth map is determined; and a focal plane of a pixel, farthest from the observation point, of the object in the field depth map is determined; S2, distances between a pixel, located between already-determined adjacent two focal planes, of the object and the two focal planes are compared, and thus, the focal plane located between the two focal planes and the field depth value of a pixel of the object located on the newly-determined focal plane are determined; and S3, the pixel with the already-determined field depth value of the object and the field depth value are sequentially stored, and a coding stream is generated. The coding method of the invention is simple and practical, and has wide applications in fields such as 3D films, 3D televisions and 3D rendering.

Description

technical field [0001] The present invention relates to a coding method, in particular to an image coding method and device. Background technique [0002] In recent years, the 3D concept has entered our lives, and various audio-visual entertainment products have also caught up with this trend, launching 3D movies, 3D games, and 3D pictures. However, at present, there is no general storage standard for 3D images, which will cause incompatibility of videos, which cannot be played on every terminal device, and hinder the promotion of 3D digital content. Contents of the invention [0003] The present invention aims at the problem that there is no general storage standard for 3D pictures at present, which will cause the incompatibility of films, which cannot be played on every terminal device, and hinders the promotion of 3D digital content, and provides An image coding method and device. [0004] The present invention proposes the following technical solutions with regard to...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597H04N13/161
Inventor 陈增源李荣彬李莉华刘亚辉
Owner THE HONG KONG POLYTECHNIC UNIV
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