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matthewearl / deep-anpr

Using neural networks to build an automatic number plate recognition system
MIT License
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make char ims #10

Closed fangpin closed 8 years ago

fangpin commented 8 years ago

why divide 255 when make_char_ims ' yield c, numpy.array(im)[:, :, 0].astype(numpy.float32) / 255.' and then mul 255 when generate the images: 'cv2.imwrite(fname, im * 255.)'.

matthewearl commented 8 years ago

Having image values in the range 0-1 makes operations such as masking simpler to express, so I convert to / from this range on input / output.