PIL.UnidentifiedImageError: 无法识别图像文件 'dataset\\\\Thumbs.db'

Question

When I run the following program、Thumbs.db looks like an image,but"PIL.UnidentifiedImageError: cannot identify image file 'dataset\\Thumbs.db'"It will be displayed.

import cv2
import numpy as np
from PIL import Image
import os

# Path for face image database
path = 'dataset'

recognizer = cv2.face.LBPHFaceRecognizer_create()
detector = cv2.CascadeClassifier("haarcascade_frontalface_default.xml");


# function to get the images and label data
def getImagesAndLabels(path):
    imagePaths = [os.path.join(path, f) for f in os.listdir(path)]
    faceSamples = []
    ids = []

    for imagePath in imagePaths:

        PIL_img = Image.open(imagePath).convert('L')  # convert it to grayscale
        img_numpy = np.array(PIL_img, 'uint8')

        id = int(os.path.split(imagePath)[-1].split(".")[1])
        faces = detector.detectMultiScale(img_numpy)

        for (x, y, w, h) in faces:
            faceSamples.append(img_numpy[y:y + h, x:x + w])
            ids.append(id)

    return faceSamples, ids


print("\n [INFO] Training faces. It will take a few seconds. Wait ...")
faces, ids = getImagesAndLabels(path)
recognizer.train(faces, np.array(ids))

# Save the model into trainer/trainer.yml
recognizer.write('trainer/trainer.yml')  # recognizer.save() worked on Mac, but not on Pi

# Print the numer of faces trained and end program
print("\n [INFO] {0} faces trained. Exiting Program".format(len(np.unique(ids))))

Answer 1

You're seeing Windows's thumbs.db file, which can't be opened as an image.

Filter your imagePaths to only include images:

imagePaths = [
    os.path.join(path, f) 
    for f 
    in os.listdir(path)
    if f.endswith(".jpg")  # <-- this `if`.
]