Questions about Symmetry and Average Intensity of Zip Code digit
I have some questions about the Symmetry and Average Intensity of the image of Zip Code digit. That is, what the definition of them?
For a digit in the data, there are 256 grayscale values ranging from 1 to 1, 1 here denotes white, 1 is black. But when plotting in Matlab, the image should be 16 x 16 matrix, and with 1 means white, 0 means black.
Then, does Symmetry should be calculated based the on the 16 x 16 matrix of the grayscale values? Also, does the average intensity means that it is the mean value of the 256 grayscale values (between 1 and 1)?
