本文參考:
https://blog.csdn.net/qq_20464153/article/details/79777823
将一副圖以灰階值轉化成黑白字元畫
代碼如下:
# -*- coding:utf-8 -*-
from PIL import Image
IMG = r'F:\PythonFiles\PycharmFile\ex10CharacterGraph.jpg' #檔案路徑
WIDTH = 80 #定義輸出畫面的寬度
HEIGHT = 45 #定義
ascii_char = list("[email protected]%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. ") #所用字元清單
# 将256灰階映射到70個字元上
def get_char(r, g, b, alpha=256): # alpha透明度
if alpha == 0:
return ' '
length = len(ascii_char)
gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b) # 計算灰階
unit = (256.0 + 1) / length
return ascii_char[int(gray / unit)] # 不同的灰階對應着不同的字元
# 通過灰階來區分色塊
if __name__ == '__main__': #__name__ == '__main__'表示以下程式隻要在本檔案運作時才執行;若該檔案被其他檔案import引用,以下程式則不執行
im = Image.open(IMG)
im = im.resize((WIDTH, HEIGHT), Image.NEAREST)
txt = ""
for i in range(HEIGHT):
for j in range(WIDTH):
txt += get_char(*im.getpixel((j, i)))
txt += '\n'
print(txt) #輸出圖像
# 将圖像寫入txt檔案
with open("ex10CharacterGraph_Graph.txt", 'w') as f:
f.write(txt)
效果圖: