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Apparatus for sdp-based signaling of camera calibration parameters or sei

A technology of camera calibration and calibration parameters, which is applied in the field of signaling devices, and can solve problems such as software that cannot be customized, 360-degree camera differences, and unsatisfactory splicing quality

Pending Publication Date: 2022-07-19
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

360-degree cameras can vary widely
However, users may be dissatisfied with the stitching quality of the software provided by the hardware provider, and the software cannot be customized, for example, to perform analysis before the stitching action

Method used

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  • Apparatus for sdp-based signaling of camera calibration parameters or sei
  • Apparatus for sdp-based signaling of camera calibration parameters or sei
  • Apparatus for sdp-based signaling of camera calibration parameters or sei

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0516] Example 1 includes an apparatus for a client comprising: a first circuit configured to encode a set of media streams carrying captured two-dimensional (2D) video; and a second circuit configured to respond to An SDP response is generated in response to a Session Description Protocol (SDP) proposal from another client requesting camera calibration parameters, the SDP response including an SDP attribute indicating the set of media streams for the set of media streams carrying the captured 2D video or indicates the presence of one or more camera calibration parameters that will be used by the other client to stitch the 2D video to generate 360 ​​degrees video.

example 2

[0517] Example 2 includes the apparatus of example 1, wherein the one or more camera calibration parameters include the number of cameras used to capture the 2D video, the layout and location of the cameras, intrinsic parameters of each camera, and each Any one or more of the extrinsic parameters of the camera, the intrinsic parameters of each camera include focal length, field of view, principal point, center position and radius, image and angular pixel resolution, camera distortion, height and width of the imaging area , and each camera's extrinsic parameters include translation and orientation values, center_azimuth, center_elevation, center_tilt, azimuth_range, elevation_range, and any one or more of other extrinsic parameters represented by x, y, z coordinates By.

example 3

[0518] Example 3 includes the apparatus of example 1 or example 2, wherein the SDP attribute is declared per media stream and the one or more calibration parameters are collected on a per stream basis.

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PUM

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Abstract

The present disclosure provides an apparatus for session description protocol (SDP)-based signaling of camera calibration parameters or supplemental enhancement information (SEI). An apparatus for a client, comprising: a first circuit configured to encode a set of media streams carrying captured two-dimensional (2D) video; and a second circuit configured to generate a session description protocol (SDP) response in response to a session description protocol (SDP) proposal from another client requesting camera calibration parameters, the SDP response comprising an SDP attribute for indicating one or more camera calibration parameters for a set of media streams carrying the captured 2D video or for indicating the presence of one or more camera calibration parameters, wherein one or more camera calibration parameters are to be used by another client to splice the 2D video to generate a 360 degree video.

Description

[0001] claim of priority [0002] This application claims the benefit of priority from US Provisional Application No. 63 / 138,278, filed on January 15, 2021, and US Provisional Application No. 63 / 142,419, filed on January 27, 2021, the entire contents of which are approved by Reference is incorporated herein. technical field [0003] Embodiments of the present disclosure generally relate to the field of wireless communications, and in particular, to an apparatus and method for Session Description Protocol (SDP)-based signaling of camera calibration parameters and / or Supplemental Enhancement Information (SEI). Background technique [0004] There are various brands of 360-degree cameras in the market, such as Ricoh, Kandao, Insta360, etc. 360-degree cameras can vary a lot. For example, they might have 2 lenses, 3 lenses, 6 lenses or more. Camera calibration data is the basic information for subsequent 360-degree video stitching and generation. However, there is no standard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/232H04N5/265H04N7/15H04N13/332H04N19/40H04N19/42
CPCH04N5/265H04N13/332H04N7/15H04N7/152H04N19/40H04N19/42H04N23/50H04N23/80H04N23/698
Inventor 厄兹古尔·奥曼沈钢傅文庆宗炜赵娟
Owner INTEL CORP