Currently only works for .pngs

[RonnieNigash]

The current cv2 module only allows us to analyze datasets of .png's and use .png input files. Look into another module that would allow either the user to choose or be indifferent to the two types.

Option 1:

Only use .png files and leave the code as-is.

Option 2:

Find another package for searching through the more common .jpg files.

Option 3:

Find an alternative package or use some form of case-based conversion that is image format indifferent.