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python2和python3實(shí)現(xiàn)在圖片上加漢字的方法

更新時(shí)間：2019年08月22日 11:38:04 作者：Nani_xiao

python2和python3實(shí)現(xiàn)在圖片上加漢字,最主要的區(qū)別還是內(nèi)部編碼方式不一樣導(dǎo)致的,在代碼上表現(xiàn)為些許的差別。這篇文章主要介紹了python2和python3實(shí)現(xiàn)在圖片上加漢字,需要的朋友可以參考下

python2和python3實(shí)現(xiàn)在圖片上加漢字,最主要的區(qū)別還是內(nèi)部編碼方式不一樣導(dǎo)致的,在代碼上表現(xiàn)為些許的差別。理解了內(nèi)部編碼原理也就不會(huì)遇到這些問題了，以下代碼是在WIN10系統(tǒng)上時(shí)測(cè)好用的。

Python2 在圖片上加漢字代碼實(shí)現(xiàn)

# -*- coding: cp936 -*-
import cv2
import numpy as np
from PIL import Image, ImageDraw, ImageFont
def ID_2_Word(txt):
 tmp_ID = txt.split(':')[0]
 value = txt.split(':')[-1]
 '''
 numbers = {
  'DS041' : "Coolant TEMP   ",
  'DS048' : "RPM     ",
  'DS049' : "Speed     ",
  'DS098' : "Oil level    ",
  'DS123' : "Control Module Voltage"
 }
 '''
 numbers = {
  'DS041' : "冷卻液溫度",
  'DS048' : "發(fā)動(dòng)機(jī)轉(zhuǎn)速",
  'DS049' : "車速 ",
  'DS098' : "燃油液位輸入",
  'DS123' : "控制模塊電壓"
 }
 word = numbers.get(tmp_ID, None)
 result = str(word) + ':' + value
 #print(result)
 return result
def cv2ImgAddText(img, text, left, top, textColor=(0, 255, 0), textSize=20):
 if (isinstance(img, np.ndarray)): #判斷是否OpenCV圖片類型
  img = Image.fromarray(cv2.cvtColor(img, cv2.COLOR_BGR2RGB))
 draw = ImageDraw.Draw(img)
 #fontText = ImageFont.truetype("font/simsun.ttc", textSize, encoding="utf-8")
 fontText = ImageFont.truetype("font/simsun.ttc", textSize, encoding="gb2312") #cp936
 draw.text((left, top), text, textColor, font=fontText)
 return cv2.cvtColor(np.asarray(img), cv2.COLOR_RGB2BGR)
def layer1_show(img,data):
 frame = cv2.resize(img, (1280, 720), interpolation=cv2.INTER_CUBIC)
 font = ImageFont.truetype('font/simsun.ttc',24,encoding="utf-8")
 OBD_string = data
 y0, dy = 50, 25
 for i, txt in enumerate(OBD_string.split(';')):
   #word = txt
  word = ID_2_Word(txt) #將OBD信號(hào)的ID轉(zhuǎn)換為中文
  word = unicode(word,'gbk')
   #print(i, txt.split(':')[0])
  y = y0+i*dy
  frame = cv2ImgAddText(frame, word, 100, y, (255, 0, 0), 20)
 cv2.imshow("layer_1", frame)
 cv2.waitKey(0)
if __name__ == '__main__':
 img = cv2.imread("map.png");
 data = "DS041: 88;DS048: 800;DS049: 64;DS098: 0.00;DS123: 0.00"
 layer1_show(img,data)

Python3 在圖片上加漢字代碼實(shí)現(xiàn)

import cv2
import numpy as np
from PIL import Image, ImageDraw, ImageFont
def ID_2_Word(txt):
 tmp_ID = txt.split(':')[0]
 value = txt.split(':')[-1]
 '''
 numbers = {
  'DS041' : "Coolant TEMP   ",
  'DS048' : "RPM     ",
  'DS049' : "Speed     ",
  'DS098' : "Oil level    ",
  'DS123' : "Control Module Voltage"
 }
 '''
 numbers = {
  'DS041' : "冷卻液溫度",
  'DS048' : "發(fā)動(dòng)機(jī)轉(zhuǎn)速",
  'DS049' : "車速 ",
  'DS098' : "燃油液位輸入",
  'DS123' : "控制模塊電壓"
 }
 word = numbers.get(tmp_ID, None)
 result = str(word) + ':' + value
 #print(result)
 return result
def cv2ImgAddText(img, text, left, top, textColor=(0, 255, 0), textSize=20):
 if (isinstance(img, np.ndarray)): #判斷是否OpenCV圖片類型
  img = Image.fromarray(cv2.cvtColor(img, cv2.COLOR_BGR2RGB))
 draw = ImageDraw.Draw(img)
 #fontText = ImageFont.truetype("font/simsun.ttc", textSize, encoding="utf-8")
 fontText = ImageFont.truetype("font/simsun.ttc", textSize, encoding="gb2312") #cp936
 draw.text((left, top), text, textColor, font=fontText)
 return cv2.cvtColor(np.asarray(img), cv2.COLOR_RGB2BGR)
def layer1_show(img,data):
 frame = cv2.resize(img, (1280, 720), interpolation=cv2.INTER_CUBIC)
 font = ImageFont.truetype('font/simsun.ttc',24,encoding="utf-8")
 OBD_string = data
 y0, dy = 50, 25
 for i, txt in enumerate(OBD_string.split(';')):
   #word = txt
  word = ID_2_Word(txt) #將OBD信號(hào)的ID轉(zhuǎn)換為中文
  #word = unicode(word,'gbk')
  y = y0+i*dy
  frame = cv2ImgAddText(frame, word, 100, y, (255, 0, 0), 20)
 cv2.imshow("layer_1", frame)
 cv2.waitKey(0)
if __name__ == '__main__':
 img = cv2.imread("map.png");
 data = "DS041: 88;DS048: 800;DS049: 64;DS098: 0.00;DS123: 0.00"
 layer1_show(img,data)

遇到的問題

python2中：UnicodeDecodeError: ‘a(chǎn)scii' codec can't decode byte 0xe8 in position 0: ordinal not in range(128)

這是因?yàn)檫@是因?yàn)槟J(rèn)的是utf-8編碼格式

中文字符的Unicode編碼0x0800-0xFFFF之間,(utf-8包含了部分漢字)
當(dāng)你試圖將該“中文字符”轉(zhuǎn)成U碼的utf-8時(shí)超出了其范籌
而GBK 規(guī)范收錄了 ISO 10646.1 中的全部 CJK 漢字和符號(hào)，并有所補(bǔ)充，
所以解決方法是將utf-8改為gbk

word = unicode(word,'utf-8') 改為 word = unicode(word,'gbk')

總結(jié)

以上所述是小編給大家介紹的python2和python3實(shí)現(xiàn)在圖片上加漢字的方法，希望對(duì)大家有所幫助，如果大家有任何疑問請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持！
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