![](/img/trans.png)
[英]cv2.error: OpenCV(4.5.2) C:\Users\ … \modules\imgproc\src\resize.cpp:3929: error: (-215:Assertion failed) func != 0 in function 'cv::hal::resize'
[英]error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\imgproc\src\resize.cpp:4045: error: (-215:Assertion failed)
我有一个灰度图像列表。 我用这段代码读了它们:
import glob
import cv2
folders = glob.glob(r'path\to\images\*')
imagenames_list = []
for folder in folders:
for f in glob.glob(folder+'/*.png'):
imagenames_list.append(f)
read_images = []
for image in imagenames_list:
read_images.append(cv2.imread(image, cv2.IMREAD_GRAYSCALE))
现在,我正在尝试使用此 function 调整read_images
中所有图像的大小:
def resize_images(img, new_width, new_height):
size = (new_width, new_height)
resized_img = cv2.resize(img, size)
return resized_img
我应用了 function 如下:
resized_img = [resize_images(img, new_width=128, new_height=32) for img in read_images]
Python 返回此错误:
---------------------------------------------------------------------------
error Traceback (most recent call last)
<ipython-input-21-9352534280fd> in <module>
1 #Anwenden der Funktion auf die Liste col_image
----> 2 resized_img = [resize_images(img, new_width=128, new_height=32) for img in read_images]
<ipython-input-21-9352534280fd> in <listcomp>(.0)
1 #Anwenden der Funktion auf die Liste col_image
----> 2 resized_img = [resize_images(img, new_width=128, new_height=32) for img in read_images]
<ipython-input-20-e4d9e7d9b2fa> in resize_images(img, new_width, new_height)
2 def resize_images(img, new_width, new_height):
3 size = (new_width, new_height)
----> 4 resized_img = cv2.resize(img, size)
5 return resized_img
error: OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\imgproc\src\resize.cpp:4045: error: (-215:Assertion failed) !ssize.empty() in function 'cv::resize'
有人可以帮忙吗? 您需要什么进一步的信息? 我已经将此 function 应用于较少数量的图像(大约 650 个图像)的列表并且它有效。 现在,这个列表包含超过 180k 的图像。 此外,图像的大小不同,但其他 650 张图像的大小也不同。
试试这个以找出哪里出错了。 希望它会告诉您哪个文件使循环崩溃。
import glob
import cv2
from cv2 import error
def resize_images(img_, new_width, new_height):
size = (new_width, new_height)
resized_img_ = cv2.resize(img_, size)
return resized_img_
folders = glob.glob(r'path\to\images\*')
img_names_list = []
read_imgs = []
resized_imgs = []
for folder in folders:
for file in (glob.glob(folder+'/*.png')):
img_names_list.append(file)
img = cv2.imread(file, cv2.IMREAD_GRAYSCALE)
read_imgs.append(img)
try:
resized_img = resize_images(img, new_width=128, new_height=32)
resized_imgs.append(resized_img)
# print(file, img, resized_img)
except error as err:
print(f'{file} returns {img}. Resize does not work')
print(err)
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