1.描述
图形外围空白区域比较多，需要裁剪掉，这样的图形有很多，需要批量处理
?2.代码
from PIL import Image
import numpy as np
import os
imagesDirectory = r"D:\PycharmProjects\pythonProject\indias\IndiasSample1" # tiff图片所在文件夹路径
x_top=200;x_left=200;x_right=0;x_bottom=0 #上下左右范围
for imageName in os.listdir(imagesDirectory):
imagePath = os.path.join(imagesDirectory, imageName)
image = Image.open(imagePath) # 打开tiff图像
ImageArray=np.array(image)
row=ImageArray.shape[0]
col=ImageArray.shape[1]
for row in range(row):
for col in range(col):
if ImageArray[row][col][0]<255:
if x_top>row:
x_top=row #获取最小x_top
if x_left>col:
x_left=col #获取最小x_left
if x_bottom<row:
x_bottom=row #获取最大x_bottom
if x_right<col:
x_right=col #获取最大x_right
i=0
for imageName in os.listdir(imagesDirectory):
imagePath = os.path.join(imagesDirectory, imageName)
image = Image.open(imagePath) # 打开tiff图像
cropped = image.crop( (x_left ,x_top , x_right+10, x_bottom+10 )) # (left, upper, right, lower)
i+=1;
cropped.save("D:\PycharmProjects\pythonProject\indias\cutimages\{}.jpg".format(imageName,i))
?3.效果
裁剪前：
?
裁剪后：
?
