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Table 1 Results of the three comparison methods in pattern tests

From: Automated optical inspection system for digital TV sets

Results of pattern tests
Number Test LAE NCC NCC-BB
1 Correct pattern 517.95 2119.78 3.07
2 Different pattern 1 1689.48 - 60.56 117.60
3 Different pattern 2 1121.15 769.23 74.67
4 Different pattern 3 2330.17 - 123.44 156.90
5 Constant black 1242.31 0.86 77.23
6 Constant white 1240.67 - 0.86 77.93
  1. This table summarizes the results for LAE, NCC and NCC-BB comparison methods in pattern tests. All three methods successfully detected the correct reference image. Please note that LAE measures dissimilarity, while NCC and NCC-BB measure similarity, hence the correct image has the lowest score under LAE, highest score under NCC and the score closest to 0 under NCC-BB method.