python skimage模块处理图片

pip 安装skimage模块

图片裁剪：

img_file2 = io.imread('./waveform/my.jpg')#导入图片数据


size=img_file2.shape#读图片后数据的大小：高，宽，每个像素点的rgb数值个数
print(size)
img_file3=img_file2[92:691, 165:1189]

源码：

import matplotlib.pyplot as plt
import matplotlib.image as mpimg

from skimage import io,transform

img_file2 = io.imread('E:/caiya for job/python/IT6302/waveform/20200619_104954.bmp')#导入图片数据

size=img_file2.shape#读图片后数据的大小：高，宽，每个像素点的rgb数值个数
print(size)
for i in range(0,size[0]):
    for j in range(0,size[1]):
        for k in range(0,3):
            data=img_file2[i][j][k]#获取每个像素点相应的rgb值
            img_file2[i][j][k]=255-data#修改每个像素点的相应的rgb值

io.imshow(img_file2)
plt.show()
io.imsave('E:/caiya for job/python/IT6302/waveform/img.bmp',img_file2)#保存图片