Method and device for transcoding panoramic video

A panoramic video and transcoding technology, applied in the field of panoramic video, can solve problems such as low resolution and too large panoramic video files, and achieve the effect of improving utilization and avoiding image distortion

Inactive Publication Date: 2016-08-24
LETV HLDG BEIJING CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for panoramic video transcoding, ...

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  • Method and device for transcoding panoramic video
  • Method and device for transcoding panoramic video
  • Method and device for transcoding panoramic video

Examples

Experimental program
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Embodiment 1

[0084] In Embodiment 1, the sub-image at the first feature point of the first panoramic video frame image is mapped to the second feature point of the second panoramic video frame image, thereby forming the second panoramic video frame image. Specifically, see image 3 As shown, including steps 301-307:

[0085] Step 301: Obtain a first panoramic video frame image, which is a frame image in the panoramic video of the ball model.

[0086] Step 302: Set a cube model, the center point of the cube model coincides with the center of the sphere model.

[0087] Step 303: Determine the feature vector from the center of the sphere model to the second feature point, and determine the angle information of the feature vector. The second feature point is a point on the surface of the cube model.

[0088] In the first embodiment, the angle information includes: the angle between the feature vector and the first projection vector, and the angle between the first projection vector and the x...

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Abstract

The invention discloses a method and a device for transcoding a panoramic video. The method comprises steps: a first panoramic video frame image is acquired, wherein the first panoramic video frame image is a frame of image in a panoramic video in a spherical model; the first panoramic video frame image is mapped to the surface of a preset cube model and mapping images mapped to the surface of the cube model are combined into a second panoramic video frame image, wherein the central point of the cube model is coincident with the spherical center of the sphere model; and all second panoramic video frame images are combined according to a preset sequence and coded into a cube model panoramic video. The method transcodes the first panoramic video frame image in the sphere model into the second panoramic video frame image in the cube model, and in a condition with the same bandwidth, the second panoramic video frame image with a higher resolution can be propagated; and the second panoramic video frame image can be transmitted with a small bandwidth, and thus, the bandwidth resource utilization rate is improved.

Description

technical field [0001] The present invention relates to the technical field of panoramic video, in particular to a method and device for transcoding panoramic video. Background technique [0002] At present, panoramic video refers to wide-angle video content that exceeds the general field of view, that is, what we usually call a circular / cylindrical 360-degree video that provides a 360-degree field of view in the horizontal direction. Panoramic video has a sense of three-dimensionality and realism, which can provide a good visual experience. [0003] There are many methods for panoramic video recording, which are usually divided into single-lens and multi-lens methods. High video quality can be achieved with multiple lenses / cameras, but the resulting video files are typically three to four times the size of normal video files, or more. This brings huge challenges to both storage and network transmission, especially in the process of network transmission, which often cannot...

Claims

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Application Information

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IPC IPC(8): H04N21/218H04N21/2343H04N21/4402
CPCH04N21/21805H04N21/234336H04N21/234363H04N21/440236H04N21/440263
Inventor 王英杰
Owner LETV HLDG BEIJING CO LTD
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