Client-server communication for streaming of visual content
A concept for transmitting information from a client to a server is described, the client being for streaming visual content from the server and for integrating the visual content into a 3D scene of a user application, and the client being for obtaining a rendered view of the 3D scene.
1. A client device for streaming visual content from a server, configured for integrating the visual content into a 3D scene of a user application, and configured for acquiring a rendered view of the 3D scene including the visual content streamed from the server, wherein the 3D scene depends on a behavior of a user of the user application,
wherein the client device is configured for determining an indication regarding one or more of
1 an information relating to a first viewpoint and a second viewpoint, wherein the first viewpoint is a viewpoint of the user of the user application, from which viewpoint the rendered view of the 3D scene is acquired, and wherein the second viewpoint is a viewpoint which has been used for generating the visual content streamed from the server and integrated into the 3D scene,
2 a latency between an event occurring at the client device and a change in the rendered view in response to the event, and
3a property of the 3D scene, wherein the indication regarding the property of the 3D scene is an indicative of one or more of
a texture of the 3D scene or of a region of the 3D scene, within which the visual content is positioned,
a contrast of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a brightness of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a visual clutter of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a temporal dynamic of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a depth of the 3D scene or of the region of the 3D scene, within which the visual content is positioned, and
a depth discontinuity of the 3D scene in a vicinity of the position of the visual content in the 3D scene, and
wherein the client device is configured for providing the indication in a message.
2. The client device according to claim 1 , configured for providing the message, the message comprising at least the indication regarding the information relating to the first viewpoint and the second viewpoint,
wherein the first viewpoint is a viewpoint of a user of the user application at a first time instance, and wherein the second viewpoint is the viewpoint of the user of the user application at a second time instance.
3. The client device according to claim 2 , wherein the message is indicative of a duration between the first time instance and the second time instance.
4. The client device according to claim 2 , wherein the message is indicative of the first time instance and/or the second time instance.
5. The client device according to claim 1 , configured for providing the message, the message comprising at least the indication regarding the information relating to the first viewpoint and the second viewpoint,
wherein the first viewpoint and the second viewpoint relate to one or more user parameters of a user of the user application, the user parameters comprising one or more of
a position in the 3D scene
a user view,
a viewing direction,
a field of view,
a field of depth, and
a focus.
6. The client device according to claim 1 , configured for providing the message, the message comprising at least the indication regarding the information relating to
the first viewpoint and the second viewpoint,
wherein the indication regarding the information relating to the first viewpoint and the second viewpoint is indicative of the first viewpoint and the second viewpoint with respect to a 3D space.
7. The client device according to claim 1 , configured for providing the message, the message comprising at least the indication regarding the information relating to the first viewpoint and the second viewpoint,
wherein the indication regarding the information relating to the first viewpoint and the second viewpoint is indicative of a mismatch between the first viewpoint and the second viewpoint.
8. The client device according to claim 7 , wherein the message is indicative of a duration of the mismatch between the first viewpoint and the second viewpoint.
9. The client device according to claim 8 , wherein the message is indicative of a measure for an extent of the mismatch between the first viewpoint and the second viewpoint during the duration of the mismatch.
10. The client device according to claim 9 , wherein the measure for the extent of the mismatch comprises one or more of
a maximum mismatch,
a minimum mismatch,
an average mismatch, and
a percentile of the mismatch.
11. The client device according to claim 1 , configured for providing the message, the message comprising at least the indication regarding the information relating to the first viewpoint and the second viewpoint,
wherein the message is indicative of a source of a mismatch between the first viewpoint and the second viewpoint.
12. A client device for streaming visual content from a server, configured for integrating the visual content into a 3D scene of a user application, and configured for acquiring a rendered view of the 3D scene,
wherein the client device is configured for determining an indication regarding a measure of a user-object interaction between a user of the user application with a virtual object of the 3D scene, the virtual object being based on the visual content provided by the server,
wherein the client device is configured for providing the indication in a message, wherein the message is indicative of a type of the user-object interaction, and
wherein the user-object interaction is based on a proximity of the user to the virtual object within a 3D space.
13. The client device according to claim 12 , wherein the measure of the user-object interaction is a duration of the user object interaction.
14. The client device according to claim 13 , wherein the user-object interaction is further based on a viewing direction of the user towards the virtual object.
15. The client device according to claim 12 , wherein the user-object interaction is associated with a virtual object event, and
wherein the message is indicative of one or more of
an identifier of the virtual object event,
a start time of the virtual object event, and
a type of the virtual object event.
16. A method for streaming visual content from a server, comprising:
integrating the visual content into a 3D scene of a user application,
acquiring a rendered view of the 3D scene including the visual content streamed from the server, wherein the 3D scene depends on a behavior of a user of the user application, determining an indication regarding one or more of
1 an information relating to a first viewpoint and a second viewpoint, wherein the first viewpoint is a viewpoint of the user of the user application, from which viewpoint the rendered view of the 3D scene is acquired, and wherein the second viewpoint is the viewpoint which has been used for generating the visual content streamed from the server and integrated into the 3D scene,
2 a latency between an event occurring at a client device and a change in the rendered view in response to the event, and
3 a property of the 3D scene, wherein the indication regarding the property of the 3D scene is an indicative of one or more of
a texture of the 3D scene or of a region of the 3D scene, within which the visual content is positioned,
a contrast of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a brightness of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a visual clutter of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a temporal dynamic of the 3D scene or of the region of the 3D scene, within which the visual content is positioned,
a depth of the 3D scene or of the region of the 3D scene, within which the visual content is positioned, and
a depth discontinuity of the 3D scene in a vicinity of the position of the visual content in the 3D scene, and
providing the indication in a message.
17. A method for streaming visual content from a server, comprising:
integrating the visual content into a 3D scene of a user application,
acquiring a rendered view of the 3D scene,
determining an indication regarding a measure of a user-object interaction between a user of the user application with a virtual object of the 3D scene, the virtual object being based on the visual content provided by the server, and
providing the indication in a message
wherein the message is indicative of a type of the user-object interaction, and
wherein the user-object interaction is based on a proximity of the user to the virtual objection within a 3D space.
18. A client device for streaming visual content from a server, configured for integrating the visual content into a 3D scene of a user application, and configured for acquiring a rendered view of the 3D scene,
wherein the client device is configured for determining an indication regarding a rendering process for acquiring the rendered view, wherein the indication regarding the rendering process is indicative of one or more rendering performance measures including one or more of
an average of a frame rate of the rendering process,
a maximum of the frame rate,
a minimum of the frame rate,
a variance of the frame rate,
a number of frame drops,
an overall number of rendered vertices,
a number of rendered vertices, an associated texture of which is included in the rendered view,
an overall GPU usage,
an available GPU rendering capacity,
an overall video decoder usage, and
an available video decoder decoding capacity,
wherein the client device is configured for providing the indication in a message.
19. A method for streaming visual content from a server, comprising:
integrating the visual content into a 3D scene of a user application,
acquiring a rendered view of the 3D scene,
determining an indication regarding a rendering process for acquiring the rendered view, wherein the indication regarding the rendering process is indicative of one or more rendering performance measures including one or more of an average of a frame rate of the rendering process,
a maximum of the frame rate,
a minimum of the frame rate,
a variance of the frame rate,
a number of frame drops,
an overall number of rendered vertices,
a number of rendered vertices, an associated texture of which is included in the rendered view,
an overall GPU usage,
an available GPU rendering capacity,
an overall video decoder usage, and
an available video decoder decoding capacity, and
providing the indication in a message.