Automatic and online setting of similarity thresholds in content-based visual information retrieval problems

EURASIP Journal on Advances in Signal Processing

Table 1 Fixed δ values defined for each pair [collection/similarity function]

f	CAPTE	INRIA	Corel
Cosine of the θ angle	0.82	0.96	0.85
Pearson correlation coefficient	0.88	0.97	0.91
Histogram intersection	0.78	0.98	0.69
Euclidean distance	0.40	0.72	0.45
Manhattan distance	0.56	0.70	0.40