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JVET-S0249 AHG3: Bugfix to LMCS with multiple slices in VTM9.0 encoder (Ticket#1136)

JongseokLee requested to merge jslee/VVCSoftware_VTM:JVET-S0249-FIX-MULTI-SLICES-LMCS into master

If an original picture is divided into multiple slices, tiles, and sub-pictures, it is required to applying the forward LMCS function for each slice, respectively.

However, the encoder repeatedly applies the forward LMCS function to the whole original picture for the coding loop of slices.

The attached image is a reconstructed picture of ParkScene sequence with the partitioning configuration for 8 slices, 12 tiles, and 2 subpictures.

Related to Ticket#1136.

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Edited by JongseokLee

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