id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
91	Adaptive scanning and decoder speed	fbossen		"While doing experiments with MaxCUSize set to 32, it appeared that this significantly slows down the decoder (by about 2.5x). Further analysis indicates that a lot of time is spent in the following functions related to adaptive scanning: updateScanOrder() and normalizeScanStats() in TComROM.cpp. When removing calls to these functions, decoding times are similar for maximum CU sizes of 32 and 64. Additionally for MaxCUSize set to 64, decoding times are roughly halved when removing calls to these functions.
Adaptive scanning should thus be configurable to determine whether its benefits justify the associated increase in decoding time.
"	defect	closed	major		HM		wontfix		fbossen ksuehring davidf jct-vc@…