Code stream caching mechanism for cylindrical surface stereoscopic panoramic video network playing
A panoramic video and three-dimensional technology, applied in the field of computer vision, can solve problems such as poor customer experience and achieve real-time viewing
Active Publication Date: 2016-10-26
深圳市优象计算技术有限公司
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Problems solved by technology
According to the traditional video transmission scheme, it is almost impossible to use the cylindrical stereoscopic panoramic video in the network environment, and the customer experience will be very poor
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[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0019] First determine the division into blocks of the cylindrical stereoscopic panoramic video. Studies have proved that the maximum horizontal viewing angle of one eye can reach 156 degrees, and the maximum horizontal viewing angle of both eyes can reach 188 degrees, while the overlapping visual field of two eyes is 124 degrees. Human eyes can only see objects within the range of 124 degrees viewing angle Create a three-dimensional effect. In fact, the human eye does not use all the range of vision when viewing. Generally, human vision is sensitive at 10 degrees, and can correctly identify information at 10-20 degrees, and is more sensitive to dynamic things at 20-30 degrees. When the vertical viewing angle of the image is 20 degrees and the horizontal viewing angle is 36 degrees, there will be a good sense of visual presence, and the eyeballs will not be ...
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The invention discloses a code stream caching mechanism for cylindrical surface stereoscopic panoramic video network playing, and relates to the field of computer vision. Aiming at a current situation that real-time watching of a cylindrical surface stereoscopic panoramic video is difficult to realize during network playing as the cylindrical surface stereoscopic panoramic video is large in data size, the cylindrical surface stereoscopic panoramic video is proposed to be divided into a plurality of blocks, the blocks are independently coded, and only data blocks of a view angle selected by a user and data blocks of view angles of left and right sides of the selected view angle are transmitted during network transmission; and three buffer areas are established in a client, and are used for storing code streams of the data blocks in the viewing angle direction and code streams of the data blocks at the left and right sides of the viewing angle respectively, so that the user can still watch the video in real time when a viewing angle is changed. Through adoption of the mechanism provided by the invention, the data size of the cylindrical surface stereoscopic panoramic video in network transmission can be greatly reduced, problems of delay and standstill in network playing of the cylindrical surface stereoscopic panoramic video can be effectively solved, and the user experience is improved.
Description
technical field [0001] The invention relates to the field of computer vision, in particular to a code stream caching mechanism for network playback of cylindrical stereoscopic panoramic video. Background technique [0002] Stereoscopic video is a video technology that can provide a stereoscopic effect. The so-called stereoscopic video is binocular stereoscopic video, which includes a left video and a right video. Binocular stereo vision is to imitate the parallax principle of human eyes, using imaging equipment to obtain two images of the measured object from different positions, and then through special equipment, our eyes can only see the image of one perspective, and then through The brain analyzes and fuses the two parallax images to produce a three-dimensional image. [0003] Panoramic video is a video with an expansive field of view. Cylindrical panoramic video is composed of an image sequence composed of spatial information in a 360-degree horizontal plane. Cylindr...
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IPC IPC(8): H04N13/00H04N21/433H04N21/6587
CPCH04N13/194H04N21/4331H04N21/6587
Inventor 罗文峰
Owner 深圳市优象计算技术有限公司