python opencv圖像二值化批量處理

from skimage import data_dir,io,transform,color,filters

import numpy as np

import cv2

def convert_gray(f):

rgb=io.imread(f) #依次讀取rgb圖片

#gray=filters.gaussian(rgb, sigma=1, output=None, mode='nearest', cval=0, multichannel=None, preserve_range=False, truncate=4.0)

#高斯

#dst=transform.resize(gray,(1920,1080)) #將灰度圖片大小轉換為256*256

gray = cv2.cvtColor(rgb,cv2.COLOR_RGB2GRAY) #要二值化圖像，要先進行灰度化處理

#全局閾值

#ret, binary = cv2.threshold(gray,0,255,cv2.THRESH_BINARY | cv2.THRESH_OTSU) #全局閾值使用THRESH_OTSU大津法

#ret, binary = cv2.threshold(gray,127,255,cv2.THRESH_BINARY_INV) #自己指定閾值 THRESH_BINARY_INV大于閾值的都為0

#ret, binary = cv2.threshold(gray,80,255,cv2.THRESH_BINARY) #自己指定閾值 THRESH_BINARY

#局部閾值

#binary = cv2.adaptiveThreshold(gray,255,cv2.ADAPTIVE_THRESH_MEAN_C,cv2.THRESH_BINARY,25,10) #局部閾值

binary = cv2.adaptiveThreshold(gray,255,cv2.ADAPTIVE_THRESH_GAUSSIAN_C,cv2.THRESH_BINARY,25,10)

return binary

#print(data_dir) #skimage data路徑

#str=data_dir+'/*.jpg'

str='I:/V2/*.jpg'

coll = io.ImageCollection(str,load_func=convert_gray)

for i in range(len(coll)):

io.imsave('I:/c2/'+np.str(i)+'.jpg',coll[i]) #循環保存圖片

參考

圖像批量處理https://blog.csdn.net/forever0_0love/article/details/80058738

圖像二值化https://www.cnblogs.com/ssyfj/p/9272615.html

python 文件批量命名

import os

def read_directory(directory_name):

print(len(os.listdir(directory_name)))

for filename,i in zip(os.listdir(directory_name),range(0,len(os.listdir(directory_name)))):

os.rename(directory_name + "/" + filename,directory_name + "/" + 'left'+str(i)+'.tif')

read_directory("C:/Users/a1253/Desktop/pytorch/opencv/image/resource/imgleft/")#文件夾路徑

python 批量創建文件夾

#批量創建文件夾

import os

def read_directory(directory_name):

print(len(os.listdir(directory_name)))

for filename,i in zip(os.listdir(directory_name),range(0,len(os.listdir(directory_name)))):

os.mkdir(directory_name + "/" + 'left'+str(i))

read_directory("C:/Users/a1253/Desktop/pytorch/opencv/image/resource/imgleft/")

python 批量處理多文件夾下文件命名

import os

dirs = []

def file_name(file_dir,dir): #獲取文件夾下文件夾列表

for root, dirs, files in os.walk(file_dir):

dir = dirs

# print(root) #當前目錄路徑

# print(dirs) #當前路徑下所有子目錄

# print(files) #當前路徑下所有非目錄子文件

return dir

break

def rename_directory(directory_name,dir): #對各文件夾下文件重命名

k = directory_name

for i in dir:

directory_name = k + str(i) + "/"

for filename,j in zip(os.listdir(directory_name),range(0,len(os.listdir(directory_name)))):

os.rename(directory_name + "/" + filename, directory_name + "/" + str(i) + '_'+ str(j) + '.png')

dirs = file_name('C:/Users/a1253/Desktop/pytorch/opencv/image/resource/imgleft/', dirs)

rename_directory("C:/Users/a1253/Desktop/pytorch/opencv/image/resource/imgleft/", dirs)

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