Open set tests. 20 individuals with the former image as the first five training image as the rest of the test. That is a total of 100 images and 300 test images. Note that this time, after 20 people did not appear in the training set, you need to give a reasonable way to determine whether a rejection images are in training for 20 individuals. Please design a rational rejection mode (the easiest way to test image is the closest distance to the training image set a threshold), and gives the ROC curve (on the premise of a question choose a reasonable K do not Be sure to examine the impact of K).

pattern1_b.m

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