id summary reporter owner description type status priority milestone component version resolution keywords cc
344 spatial merge candidate derivation process with wrong prunings LiZhang "The pruning process is dependent on the enabling of triangular prediction mode which is not aligned with the SW.
'''8.5.2.3 Derivation process for spatial merging candidates'''
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For the derivation of availableFlagB0, refIdxLXB0, predFlagLXB0 and mvLXB0 the following applies:
– …
– The variables availableFlagB0, refIdxLXB0, predFlagLXB0 and mvLXB0 are derived as follows:
– If one or more of the following conditions are true, availableFlagB0 is set equal to 0, both components of mvLXB0 are set equal to 0, refIdxLXB0 is set equal to −1 and predFlagLXB0 is set equal to 0, with X being 0 or 1, and bcwIdxB0 is set equal to 0:
– availableB0 is equal to FALSE.
– availableB1 is equal to TRUE and the luma locations ( xNbB1, yNbB1 ) and ( xNbB0, yNbB0 ) have the same motion vectors and the same reference indices.
– ''' ~~availableA1 is equal to TRUE, the luma locations ( xNbA1, yNbA1 ) and ( xNbB0, yNbB0 ) have the same motion vectors and the same reference indices and MergeTriangleFlag[ xCb ][ yCb ] is equal to 1. ~~'''
– Otherwise, availableFlagB0 is set equal to 1 and the following assignments are made:
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For the derivation of availableFlagA0, refIdxLXA0, predFlagLXA0 and mvLXA0 the following applies:
– …
– The variables availableFlagA0, refIdxLXA0, predFlagLXA0 and mvLXA0 are derived as follows:
– If one or more of the following conditions are true, availableFlagA0 is set equal to 0, both components of mvLXA0 are set equal to 0, refIdxLXA0 is set equal to −1 and predFlagLXA0 is set equal to 0, with X being 0 or 1, and bcwIdxA0 is set equal to 0:
– availableA0 is equal to FALSE.
– availableA1 is equal to TRUE and the luma locations ( xNbA1, yNbA1 ) and ( xNbA0, yNbA0 ) have the same motion vectors and the same reference indices.
– ''' ~~availableB1 is equal to TRUE, the luma locations ( xNbB1, yNbB1 ) and ( xNbA0, yNbA0 ) have the same motion vectors and the same reference indices and MergeTriangleFlag[ xCb ][ yCb ] is equal to 1. ~~'''
– ''' ~~availableB0 is equal to TRUE, the luma locations ( xNbB0, yNbB0 ) and ( xNbA0, yNbA0 ) have the same motion vectors and the same reference indices and MergeTriangleFlag[ xCb ][ yCb ] is equal to 1. ~~'''
– Otherwise, availableFlagA0 is set equal to 1 and the following assignments are made:
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For the derivation of availableFlagB2, refIdxLXB2, predFlagLXB2 and mvLXB2 the following applies:
– …
– The variables availableFlagB2, refIdxLXB2, predFlagLXB2 and mvLXB2 are derived as follows:
– If one or more of the following conditions are true, availableFlagB2 is set equal to 0, both components of mvLXB2 are set equal to 0, refIdxLXB2 is set equal to −1 and predFlagLXB2 is set equal to 0, with X being 0 or 1, and bcwIdxB2 is set equal to 0:
– availableB2 is equal to FALSE.
– availableA1 is equal to TRUE and the luma locations ( xNbA1, yNbA1 ) and ( xNbB2, yNbB2 ) have the same motion vectors and the same reference indices.
– availableB1 is equal to TRUE and the luma locations ( xNbB1, yNbB1 ) and ( xNbB2, yNbB2 ) have the same motion vectors and the same reference indices.
– ''' ~~availableB0 is equal to TRUE, the luma locations ( xNbB0, yNbB0 ) and ( xNbB2, yNbB2 ) have the same motion vectors and the same reference indices and MergeTriangleFlag[ xCb ][ yCb ] is equal to 1. ~~'''
– ''' ~~availableA0 is equal to TRUE, the luma locations ( xNbA0, yNbA0 ) and ( xNbB2, yNbB2 ) have the same motion vectors and the same reference indices and MergeTriangleFlag[ xCb ][ yCb ] is equal to 1. ~~'''
– ''' ~~availableFlagA0 + availableFlagA1 + availableFlagB0 + availableFlagB1 is equal to 4 and MergeTriangleFlag[ xCb ][ yCb ] is equal to 0. ~~'''
– Otherwise, availableFlagB2 is set equal to 1 and the following assignments are made:
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" defect closed minor spec VVC D6 vE fixed ksuehring bbross XiangLi fbossen jvet@…