지정된 폴더의 모든 이미지를 읽는 Python 방법

'''
Load the image files form the folder
input:
  imgDir: the direction of the folder
  imgName:the name of the folder
output:
  data:the data of the dataset
  label:the label of the datset
'''
def load_Img(imgDir,imgFoldName):
  imgs = os.listdir(imgDir+imgFoldName)
  imgNum = len(imgs)
  data = np.empty((imgNum,1,12,12),dtype="float32")
  label = np.empty((imgNum,),dtype="uint8")
  for i in range (imgNum):
    img = Image.open(imgDir+imgFoldName+"/"+imgs[i])
    arr = np.asarray(img,dtype="float32")
    data[i,:,:,:] = arr
    label[i] = int(imgs[i].split('.')[0])
  return data,label

craterDir = "./data/CraterImg/Adjust/"
foldName = "East_CraterAdjust12"
data, label = load_Img(craterDir,foldName)