Measuring quality-of-experience (QoE) for virtual reality (VR) streaming content
Measuring quality-of-experience (QoE) for virtual reality (VR) streaming content is disclosed. A network computing device receives a client-side VR stream capture and a client pose data set that are generated by a client computing device based on a VR content and one or more induced network impairments (e.g., latency, packet loss, and/or jitter, as non-limiting examples). Using the same VR content and the client pose data set, the network computing device generates a source VR stream capture that is not subjected to the one or more induced network impairments. The network computing device performs a frame-by-frame comparison of the client-side VR stream capture and the source VR stream capture. Based on the frame-by-frame comparison, the network computing device generates a QoE metric that indicates a degree of degradation of the client-side VR stream capture relative to the source VR stream capture.
1. A method for measuring quality-of-experience (QoE) for virtual reality (VR) streaming content, comprising:
streaming, via a network connection to a client computing device, VR content from a VR server of a network computing device to a VR head-mounted display device (HMDD) communicatively coupled to the client computing device;
injecting, by the network computing device, one or more induced network impairments into the network connection while streaming the VR content;
receiving, by the network computing device from the client computing device, a client-side VR stream capture and a client pose data set generated by the client computing device based on the VR content and the one or more induced network impairments;
generating a source VR stream capture based on the VR content and the client pose data set without the one or more induced network impairments;
performing a frame-by-frame comparison of the client-side VR stream capture and the source VR stream capture; and
generating a QoE metric indicating a degree of degradation of the client-side VR stream capture relative to the source VR stream capture, based on the frame-by-frame comparison.
2. The method of claim 1 , further comprising:
recording, by the client computing device, movements of the HMDD while streaming the VR content from the VR server to the HMDD as the client pose data set;
recording, by the client computing device, visual output of the HMDD as the client-side VR stream capture; and
transmitting, by the client computing device, the client-side VR stream capture and the client pose data set to the network computing device.
3. The method of claim 2 , wherein recording the movements of the HMDD while streaming the VR content from the VR server to the HMDD as the client pose data set comprises recording the movements of the HMDD while the HMDD is selectively rotated by a computer-controlled turntable to which the HMDD is affixed according to a rotation-and-velocity script.
4. The method of claim 1 , wherein the client pose data set comprises data indicating one or more of a position of the HMDD and an orientation of the HMDD.
5. The method of claim 1 , wherein the QoE metric comprises a Structural Similarity Index Metric (SSIM).
6. The method of claim 1 , wherein the one or more induced network impairments comprises one or more of network latency, packet loss, and jitter.
7. The method of claim 1 , further comprising identifying, based on the QoE metric, a network location from which to stream the VR content.
8. A computing system, comprising:
a network computing device comprising:
a first memory; and
a first processor device coupled to the first memory and configured to:
stream, via a network connection to a client computing device, virtual reality (VR) content from a VR server of a network computing device to a VR head-mounted display device (HMDD) communicatively coupled to the client computing device;
inject one or more induced network impairments into the network connection while streaming the VR content;
receive, from the client computing device, a client-side VR stream capture and a client pose data set generated based on the VR content and the one or more induced network impairments;
generate a source VR stream capture based on the VR content and the client pose data set without the one or more induced network impairments;
perform a frame-by-frame comparison of the client-side VR stream capture and the source VR stream capture; and
generate a quality-of-experience (QoE) metric indicating a degree of degradation of the client-side VR stream capture relative to the source VR stream capture, based on the frame-by-frame comparison.
9. The computing system of claim 8 , further comprising:
the client computing device comprising:
a second memory; and
a second processor device coupled to the second memory and configured to:
record movements of the HMDD while streaming the VR content from the VR server to the HMDD as the client pose data set;
record visual output of the HMDD as the client-side VR stream capture; and
transmit the client-side VR stream capture and the client pose data set to the network computing device.
10. The computing system of claim 9 , wherein the second processor device is configured to record the movements of the HMDD while streaming the VR content from the VR server to the HMDD as the client pose data set by being configured to record the movements of the HMDD while the HMDD is selectively rotated by a computer-controlled turntable to which the HMDD is affixed according to a rotation-and-velocity script.
11. The computing system of claim 8 , wherein the client pose data set comprises data indicating one or more of a position of the HMDD and an orientation of the HMDD.
12. The computing system of claim 8 , wherein the QoE metric comprises a Structural Similarity Index Metric (SSIM).
13. The computing system of claim 8 , wherein the one or more induced network impairments comprises one or more of network latency, packet loss, and jitter.
14. The computing system of claim 8 , wherein the first processor device is further configured to identify, based on the QoE metric, a network location from which to stream the VR content.
15. A computer program product stored on a non-transitory computer-readable storage medium and including computer-executable instructions configured to cause a processor device to:
stream, via a network connection, virtual reality (VR) content from a VR server to a VR head-mounted display device (HMDD);
inject one or more induced network impairments into the network connection while streaming the VR content;
receive a client-side VR stream capture and a client pose data set generated based on the VR content and the one or more induced network impairments;
generate a source VR stream capture based on the VR content and the client pose data set without the one or more induced network impairments;
perform a frame-by-frame comparison of the client-side VR stream capture and the source VR stream capture; and
generate a QoE metric indicating a degree of degradation of the client-side VR stream capture relative to the source VR stream capture, based on the frame-by-frame comparison.
16. The computer program product of claim 15 wherein the computer-executable instructions further cause the processor device to:
record movements of the HMDD while streaming the VR content from the VR server to the HMDD as the client pose data set; and
record visual output of the HMDD as the client-side VR stream capture.
17. The computer program product of claim 16 , wherein the computer-executable instructions further cause the processor device to record the movements of the HMDD while streaming the VR content from the VR server to the HMDD as the client pose data set by causing the processor device to record the movements of the HMDD while the HMDD is selectively rotated by a computer-controlled turntable to which the HMDD is affixed according to a rotation-and-velocity script.
18. The computer program product of claim 15 , wherein the QoE metric comprises a Structural Similarity Index Metric (SSIM).
19. The computer program product of claim 15 , wherein the one or more induced network impairments comprises one or more of network latency, packet loss, and jitter.
20. The computer program product of claim 15 , wherein the computer-executable instructions further cause the processor device to identify, based on the QoE metric, a network location from which to stream the VR content.