1、什easypr数据集； 

)
)

]
all_label_list = temp[:, ]
n_sample = , )
matcher = cv2.FlannBasedMatcher(flann_params, {})
)
extract_bow = cv2.BOWImgDescriptorExtractor(extract, matcher)
]
)
][][])
):
][][])
)
np_val_labels = np.array(val_labels)[:,np.newaxis]
np_result = np.array(result)[:,np.newaxis]
matches = np_result == np_val_labels

correct = np.count_nonzero(matches)
accuracy = correct*100.0/len(result)
print(accuracy)