python 识别身份证号码

时间：2023-04-09 14:29:14
# !/usr/bin/python

# -*-coding:utf-8-*-

import sys

import time

time1 = time.time()

from PIL import Image

import pytesseract

###########二值化算法

def binarizing(img, threshold):

    pixdata = img.load()

    w, h = img.size

    for y in range(h):

        for x in range(w):

            if pixdata[x, y] < threshold:

                pixdata[x, y] = 0

            else:

                pixdata[x, y] = 255

    return img

###########去除干扰线算法

def depoint(img):  # input: gray image

    pixdata = img.load()

    w, h = img.size

    for y in range(1, h - 1):

        for x in range(1, w - 1):

            count = 0

            if pixdata[x, y - 1] > 245:

                count = count + 1

            if pixdata[x, y + 1] > 245:

                count = count + 1

            if pixdata[x - 1, y] > 245:

                count = count + 1

            if pixdata[x + 1, y] > 245:

                count = count + 1

            if count > 2:

                pixdata[x, y] = 255

    return img

########身份证号码识别

def identity_OCR(pic_path):

    #####身份证号码截图

    img1 = Image.open(pic_path)

    w, h = img1.size

    ##将身份证放大3倍

    out = img1.resize((w * 3, h * 3), Image.ANTIALIAS)

    region = (125 * 3, 200 * 3, 370 * 3, 250 * 3)

    # 裁切身份证号码图片

    cropImg = out.crop(region)

    # 转化为灰度图

    img = cropImg.convert('L')

    # 把图片变成二值图像。

    img1 = binarizing(img, 100)

    img2 = depoint(img)

    code = pytesseract.image_to_string(img2)

    print("识别该身份证号码是:" + str(code))

if __name__ == '__main__':

    pic_path = "./1.png"

    identity_OCR(pic_path)

    time2 = time.time()

    print(u'总共耗时：' + str(time2 - time1) + 's')

　　

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