VIDEO STREAMING AND VIDEO TELEPHONY UPLINK PERFORMANCE ANALYSIS SYSTEM

摘要

The technology disclosed relates to scoring user experience of video frames displayed on a mobile or other video display device. In particular, it relates to capture alignment and test stimulus isolation techniques that compensate for artifacts in the capture mechanism. The technology disclosed includes methods and systems for analyzing both downlink and uplink quality for mobile or other video display device cameras capturing and transmitting video frames including teleconference video display. Particular aspects of the technology disclosed are described in the claims, specification and drawings.

主权项

1. A method of calibrating a target video source being captured by a camera incorporated in a device under test (DUT), including:
transmitting to an image display, data representing an initial test pattern; receiving captured pattern data, representing capture of the initial test pattern by the camera incorporated in the DUT; calculating at least one transformation of the initial test pattern, based on comparison of the captured pattern data and the initial test pattern, wherein the transformation predistorts the initial test pattern transmitted to the image display to scale and perspective-control the transmitted initial test pattern to reduce differences between captured predistorted pattern data and the initial pattern data; and storing parameters of the transformation.