Problems when dealing with black-and-white pictures

[Uylee]

Hi, if there is a black-and-white pictures in the datasets there will be a little problems, so, I add some codes in 'utils_gist.py' to fit the data. If you feel necessary you can add it in the source codes for future use ^.^

[Uylee]

Perhaps there are some redundancy codes but it works, you can deal with it in your way if necessary. Wish you a good day!

[Yumeka999]

ok, good idea!