Image Similarity Measures for Autocorrelation Maps Comparison

Autocorrelation maps (ACMs) determined from body surface potential maps are compared with those determined from the standard 12-lead electrocardiogram. Five image similarity measures (mean square error, mean absolute error, cross-correlation coefficient, structural similarity index, multi-scale structural similarity index) are used to evaluate similarity between 148 ACM pairs. The relative range of the measures is low, and their relative mean position is close to the theoretical value of the highest similarity.