105 training flowers, 45 test flowers
k =  1   test accuracy 0.933
k =  3   test accuracy 0.933
k =  5   test accuracy 0.933
k =  7   test accuracy 0.933
k =  9   test accuracy 0.933
k = 15   test accuracy 0.933
k = 25   test accuracy 0.889
k = 51   test accuracy 0.911
