JVET-AL0093 AHG 9: On value range for syntax elements coded as u(v) [H. Tan, C. Kim, J. Nam, J. Lee, J. Lim, S. Kim (LGE)]

It is asserted that when a syntax element that is coded as u(v) and the number of bits is not explicitly specified but need to be calculated based on the value of other syntax element, there may be a need to explicitly specify the value range for the syntax element. This is particularly needed when the calculation to get the number of bits involves rounding operation such as Ceil( ), Round( ), and Floor( ).

This contribution proposes the following:

1. Explicitly specify the value range for syntax element coded as u(v) in which the number of bits is not given explicitly but needs to be calculated. Consequently, we need to specify the value range for the following syntax elements:
   • cr_rect_group_id[ i ]
2. doi_layer_idx[ i ]the coding of doi_nuh_layer_id[ i ] from u(v) to u(6).

Agreed for item 1.

No action on item 2 because of action on JVET-AL0308.