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VR (Virtual Reality) three-dimensional image compression method

A 3D image and image compression technology, which is applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of compression ratio and compression loss that cannot achieve performance, large amount of 3D image data, and large bandwidth occupied by 3D images. To achieve the effect of reducing the transmission bandwidth

Inactive Publication Date: 2019-04-02
XIAN CREATION KEJI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The data volume of 3D images is very large, and direct transmission of 3D images will occupy a large amount of bandwidth. The existing technology uses compression coding methods to compress the collected 3D images and then transmits them. However, the compression ratio and compression loss of the existing compression coding methods cannot Therefore, how to develop a VR three-dimensional image compression method with high compression ratio and minimum compression loss is a key research direction in this technical field.

Method used

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Embodiment 1

[0046] See figure 1 , figure 1 A schematic flow chart of a VR three-dimensional image compression method provided in an embodiment of the present invention; the VR three-dimensional image compression method includes the following steps:

[0047] (a) acquiring multiple frames of original three-dimensional images;

[0048] (b) distinguishing key frame images and non-key frame images in the original three-dimensional image;

[0049] (c) removing redundant data in the non-key frame image;

[0050] (d) dividing the key frame image data into several macroblocks;

[0051] (e) obtaining the prediction residual of the macroblock according to the adaptive template;

[0052] (f) Obtaining the quantized residual of the prediction residual according to the fluctuating state to form a transmission code stream.

[0053] The embodiment of the present invention performs inter-frame compression by performing inter-frame redundancy elimination on 3D images collected by VR, and adopts an int...

Embodiment 2

[0055] Please continue to refer figure 1 , this embodiment focuses on a detailed description of a VR three-dimensional image compression method on the basis of the foregoing embodiments. Specifically, the implementation subject of the three-dimensional image compression method is an image compression device in a VR system, and the VR three-dimensional image compression method includes:

[0056] (S01) Acquiring multiple frames of original three-dimensional images;

[0057] The 3D image collector in the VR system is used to continuously shoot the shooting target to obtain multiple frames of original 3D images of the shooting target.

[0058] (S02) distinguishing key frame images and non-key frame images in the original three-dimensional image;

[0059] Perform linear transformation on each frame of the 3D image to obtain the grayscale data of each frame of the 3D image, and determine whether the frame of the 3D image is a key frame or a non-key frame according to the grayscale...

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Abstract

The invention relates to a VR (Virtual Reality) three-dimensional image compression method and device. The method comprises the steps of (a) obtaining a multi-frame original three-dimensional image; (b) distinguishing key frame images and non-key frame images in the original three-dimensional image; (c) eliminating redundant data in the non-key frame images; (d) dividing data of the key frame images into a plurality of macro blocks; (e) obtaining prediction residuals of the macro blocks according to an adaptive template; and (f) obtaining the quantization residuals of the prediction residualsaccording to the fluctuation state so as to form a transmission code stream. According to the invention, inter-frame compression is carried out through performing inter-frame redundancy elimination onthe VR collected three-dimensional image, and an intra-frame compression coding method based on the adaptive template and fluctuation state is adopted for key frames, so that the compression rate ofthe VR image is improved, the compression loss is reduced, and the transmission bandwidth is further reduced.

Description

technical field [0001] The invention belongs to the technical field of VR data compression, and in particular relates to a VR three-dimensional image compression method. Background technique [0002] Virtual reality (Virtual Reality, VR) technology is a high-tech in the field of graphics and images that has emerged in recent years, also known as the spirit world technology. Among them, the virtual-real fusion scene generation technology based on image material is becoming a technological development trend and a typical research hotspot in the direction of virtual reality and augmented reality. To perform three-dimensional reconstruction and fusion of virtual objects embedded in images, firstly, the three-dimensional image information of real objects in the image must be obtained. The existing three-dimensional imaging technology mainly obtains the color information and depth information of objects through sensors, and the color information and depth information The informat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/85H04N19/176H04N19/50H04N19/124
CPCH04N19/124H04N19/176H04N19/50H04N19/85
Inventor 李雯冉文方
Owner XIAN CREATION KEJI CO LTD
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