id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
761	Incorrect conditions for checking different CTUs between the positions (xQg-1, yQg) and (xCb, yCb) in section 8.7.1	moonmo.koo		"In the section 8.7.1 (Derivation process for quantization parameters) in the current VVC spec text, the following conditions can be found, which check whether or not two positions, (xQg-1, yQg) and (xCb, yCb), lie in different CTUs:

{{{
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The CTB containing the luma coding block covering the luma location ( xQg − 1, yQg ) is not equal to the CTB containing the current luma coding block at ( xCb, yCb ), i.e. '''all of the following conditions are true''':
– ( xQg − 1 )  >>  CtbLog2SizeY is not equal to ( xCb )  >>  CtbLog2SizeY
– ( yQg )  >>  CtbLog2SizeY is not equal to ( yCb )  >>  CtbLog2SizeY

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The CTB containing the luma coding block covering the luma location ( xQg, yQg − 1 ) is not equal to the CTB containing the current luma coding block at ( xCb, yCb ), i.e. '''all of the following conditions are true''':
– ( xQg )  >>  CtbLog2SizeY is not equal to ( xCb )  >>  CtbLog2SizeY
– ( yQg − 1 )  >>  CtbLog2SizeY is not equal to ( yCb )  >>  CtbLog2SizeY

......

}}}

It seems that ""'''all of the following conditions'''"" should be replaced by ""'''any of the following conditions'''"" for correct checking."	defect	closed	minor		spec	VVC D7 vE	fixed		ksuehring bbross XiangLi fbossen jvet@…