Graphics Reference
In-Depth Information
as interactive 3D video streaming. In this case the solution is to use Reduced-Reference
(RR) or No- Reference (NR) metrics which do not require the original image for quality
assessment, but either no information (NR) or just some side-information about it (RR)
requiring few bits for its transmission. Most of the NR metrics are designed specifically
for a known set of artifacts (e.g., JPEG compression) and cannot be deployed in a more
general scenario. In case of RR metrics, side-information is generated from features ex-
tracted from the original 3D image sequence and sent to the receiver-side to measure 3D
video quality. Since the reference side-information has to be transmitted over the channel,
either in- band or on a dedicated connection, the overhead should be kept at a minimum
level. The next section describeshowwecouldmeasure3Dvideoquality“onthefly” us-
ingRRandNRmethodsandprovides a brief description of the existing methods.
