The accuracy of the target detection position can be evaluated by the IOD value. The iout calculation method is to find the ratio of the union and intersection of the true annotations of the detection results.
The lower the value on the diagonal of the confusion matrix, the better the classification effect of the classifier.
What is the spatial adjacency of the two pixels with coordinates (21, 13) and coordinates (22.12)?
The OTSU algorithm traverses the possible thresholds, and selects the segmentation threshold of the maximum value in the foreground and background regions as the optimal threshold.
In the N-gram model, N refers to ignoring the effect of the above words with a distance greater than N. The larger the N, the richer the sequence information contained in the model, and the amount of calculation increases.