将图片中的黄色修改为红色

 1 from PIL import ImageDraw,Image
 2 img = Image.open(r‘C:\Users\87823\Desktop\warning.jfif‘)
 3 draw_obj = ImageDraw.Draw(img)
 4 w,h = img.size
 5 # 创建图像区域
 6 img_output = Image.new(‘RGB‘,(2*w,h))
 7 # 将原图复制到(0,0)
 8 img_output.paste(img,(0,0))
 9 
10 def get_color():
11     # 将黄色修改为红色
12     # print(oldColor)
13     # 获取每个通道的值 正宗的黄色(255,255,0)
14     if oldColor[0]>60 and oldColor[1]>60:
15         return(oldColor[0],0,oldColor[2]) # 返回红色
16     else:
17         return oldColor
18 
19 for x in range(w):
20     for y in range(h):
21         oldColor = img.getpixel((x,y))
22         draw_obj.point((x,y),fill=get_color())
23 img_output.paste(img,(w,0))
24 img_output.show()