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Patent Issued for Method and Device for Generating 3D Panoramic Video Streams, and Videoconference Method and Device

May 20, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- According to news reporting originating from Alexandria, Virginia, by VerticalNews journalists, a patent by the inventors Li, Kai (Shenzhen, CN); Liu, Yuan (Shenzhen, CN); Wang, Jing (Shenzhen, CN); Su, Honghong (Shenzhen, CN); Zhao, Song (Shenzhen, CN), filed on June 29, 2011, was published online on May 6, 2014.

The assignee for this patent, patent number 8717405, is Huawei Device Co., Ltd. (Shenzhen, CN).

Reporters obtained the following quote from the background information supplied by the inventors: "The telepresence technology in the prior art is a technology of combining high-quality audio, high-definition video pictures, and interactive components, and enables users to hold a meeting through a network as if they are physically on the spot. For example, the telepresence conference system provides real-time face-to-face interaction experience for users through advanced video, audio and coordination technologies. The telepresence conference system can even provide pictures of an apartment, and create face-to-face conference experience around a virtual conference table through images of a physical size, high-definition resolution, and stereoscopic and multi-channel audio. Although the existing telepresence brings apartment conference experience which is better and more authentic than a traditional conference system, the existing telepresence is different from the real-life face-to-face communication because it provides no authentic 3D experience. The video information to a participant is only 2-dimensional planar information rather than communication information characterized by depth and hierarchy.

"The existing 3D video technology provides pictures that comply with 3D visual principles and offer depth information, demonstrates the views in the real life onto the screen, and renders the scenes in depth, hierarchically, and authentically. It is a megatrend of video technologies. However, the 3D video technology has not been applied widely for lack of mature technologies, cost-efficient display devices, and standards.

"The existing image stitching technology can break through the physical restriction of the imaging device and generate digital panoramic images of a wide field of view. However, the following problems exist in the image stitching: (1) It is hard to reconstruct occlusion and cavities of virtual viewpoints; (2) the original viewpoints differ sharply, the parallax is great, many more intermediate virtual viewpoint images of continuous viewpoints need to be generated, and the amount of calculation increases sharply; and (3) the parallax calculation problem is still not well solved.

"Therefore, the telepresence conference system in the prior art is incapable of providing high-resolution panoramic seamless 3D conference experience."

In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventors' summary information for this patent: "The embodiments of the present invention provide a method and a device for generating 3D panoramic video streams, a videoconference method, and a videoconference device, so as to offer high-resolution panoramic seamless 3D telepresence conference video images by using different display modes of different display devices.

"One objective of the present invention provides a method for generating 3D panoramic video streams. The method includes: obtaining depth information of at least two video images to be stitched; obtaining image data in multiple depth positions from a corresponding video image to be stitched according to the depth information of each video image to be stitched; and stitching data of the video images according to the obtained image data in multiple depth positions, and generating 3D panoramic video streams.

"Another objective of the present invention is to provide a 3D panoramic videoconference method. The method includes: obtaining video streams of the same site synchronously from at least two viewpoints; obtaining image data in multiple depth positions from a corresponding video stream according to depth information of each video stream; stitching the video streams obtained from different viewpoints according to the depth information, and generating 3D panoramic video streams; and displaying video images of the 3D panoramic video streams on a terminal display according to a type of the terminal display.

"Another objective of the present invention is to provide a device for generating 3D panoramic video streams. The device includes: a depth information obtaining apparatus, configured to obtain depth information of at least two video images to be stitched; a hierarchical image obtaining apparatus, configured to obtain image data in multiple depth positions from a corresponding video image to be stitched according to the depth information of each video image to be stitched; and a 3D panoramic video stream generating apparatus, configured to stitch data of the video images according to the obtained image data in multiple depth positions, and generate 3D panoramic video streams.

"Another objective of the present invention is to provide a 3D panoramic videoconference device. The device includes: a depth information obtaining apparatus, configured to obtain video streams of the same site synchronously from at least two viewpoints; a hierarchical image obtaining apparatus, configured to obtain image data in multiple depth positions from a corresponding video stream according to depth information of each video stream; a 3D panoramic video stream generating apparatus, configured to stitch the video streams obtained from different viewpoints based on the depth information, and generate 3D panoramic video streams; and a video image display apparatus, configured to display video images of the 3D panoramic video streams on a terminal display according to a type of the terminal display.

"The embodiments of the present invention bring at least the following benefits: The technical solution of the present invention implements fast and real-time stitching of video images, simplifies the stitching of video images, improves efficiency of stitching video images, provides users with 3D panoramic seamless conferences of better luminance and hue effects, and enables the users to enjoy more advanced and authentic experience than the traditional telepresence."

For more information, see this patent: Li, Kai; Liu, Yuan; Wang, Jing; Su, Honghong; Zhao, Song. Method and Device for Generating 3D Panoramic Video Streams, and Videoconference Method and Device. U.S. Patent Number 8717405, filed June 29, 2011, and published online on May 6, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=62&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=3071&f=G&l=50&co1=AND&d=PTXT&s1=20140506.PD.&OS=ISD/20140506&RS=ISD/20140506

Keywords for this news article include: Technology, Huawei Device Co. Ltd..

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Source: Journal of Technology


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