Abstract: An example apparatus disclosed herein is to receive network data communicated via a first channel associated with the online collaboration session, the network data including received media data packets. The disclosed example apparatus is also to analyze the network data to determine first loopback data, the first loopback data including at least one of a first quality score based on a first analysis of the received media data packets or a second quality score based on a second analysis of media decoded from the received media data packets. The disclosed example apparatus is also to analyze local data obtained by a local client during the online collaboration session to determine second loopback data. The disclosed example apparatus is further to cause transmission of a loopback message to a moderator client via the second channel, the loopback message based on the first loopback data and the second loopback data.

Abstract: A non-photorealistic image is rendered from an original model in a process which includes selecting a normal in the original model, selecting a vector from a set of vectors, and substituting the vector for the normal to produce a non-photorealistic image corresponding to the original model. The vector may be selected from a subdivision surface that defines a set of vectors, or it may be selected from a set containing a vector pointing substantially toward a virtual light source and a parameterized vector pointing between the virtual light source and a virtual eyepoint.