資源簡介
樹莓派利用python、opencv、PyALPR識別車牌,目前僅限于識別歐洲車輛,國內車牌可自行訓練。
代碼片段和文件信息
import?json?shlex?subprocess
class?PlateReader:
????def?__init__(self):
????????#webcam?subprocess?args
????????webcam_command?=?“fswebcam?-r?640x480?-S?20?--no-banner?--quiet?alpr.jpg“
????????self.webcam_command_args?=?shlex.split(webcam_command)
????????#alpr?subprocess?args
????????alpr_command?=?“alpr?-c?eu?-t?hr?-n?300?-j?alpr.jpg“
????????self.alpr_command_args?=?shlex.split(alpr_command)
????def?webcam_subprocess(self):
????????return?subprocess.Popen(self.webcam_command_args?stdout=subprocess.PIPE)
????def?alpr_subprocess(self):
????????return?subprocess.Popen(self.alpr_command_args?stdout=subprocess.PIPE)
????def?alpr_json_results(self):
????????self.webcam_subprocess().communicate()
????????alpr_out?alpr_error?=?self.alpr_subprocess().communicate()
????????if?not?alpr_error?is?None:
????????????return?None?alpr_error
????????elif?“No?license?plates?fou
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