Fig. 13: Negative center color of standard segment N03, N04, S03, S04.
From: Commercial color impact on traditional heritage features in Suzhou Shiquan historic district

The extraction process of negative commercial element colors for the standard segments of streets N03, S03, N04, and S04, corresponding to a, b, c, and d, respectively. Color particles located within the range of disharmonious colors will be extracted and subjected to clustering analysis to determine the final negative color center.