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：
1 import matplotlib.pyplot as plt 2 import matplotlib.image as mpimg 3 4 from skimage import io,transform 5 6 img_file2 = io.imread('E:/caiya for job/python/IT6302/waveform/20200619_104954.bmp')#导入图片数据 7 8 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 9 print(size) 10 for i in range(0,size[0]): 11 for j in range(0,size[1]): 12 for k in range(0,3): 13 data=img_file2[i][j][k]#获取每个像素点相应的rgb值 14 img_file2[i][j][k]=255-data#修改每个像素点的相应的rgb值 15 16 io.imshow(img_file2) 17 plt.show() 18 io.imsave('E:/caiya for job/python/IT6302/waveform/img.bmp',img_file2)#保存图片
