SGX545 scaling capability

hi there

below statement have been extracted from a road map document from our customer chip-set that used SGX545 inside.

Improved scalars for better image/ video scaling • 3x3 scalar for better scaling capabilities

what does 3x3 scalar mean?

is it mean the SGX use 9 scalar processors for scaling? 3 for vertical and 3 for horizontal?

what the scaling capability different between SGX545 and SGX535?