surfaceBrightnessProfile

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: surfaceBrightnessProfile

Indicates the distribution of brightness as a function of position across a surface, typically describing how intensity changes from one region to another.