ip camera or web camera. error: (-215:Assertion failed) !ss ize.empty() in function 'cv::resize'

[xiaowo1996]

when i use detect.py in ip camera or web camera. I do resize function to img. the error appear (-215:Assertion failed) !ss ize.empty() in function 'cv::resize'. (i get the face bounding box and i resize it and input it in another model to interference )but if i use --source img/video(offline inference) ,it works perfely.

i just add the code in detect.py

cropped =im0[ int(box_y1):int(box_y2),int(box_x1):int(box_x2)]
img1 = cv2.resize(cropped,(112,112))

i just add this in detect.py .it can works well in offline interference but error in ip camera or web camera.

[glenn-jocher]

@xiaowo1996 👋 Hello, thank you for your interest in our work! This issue seems to lack the minimum requirements for a proper response, or is insufficiently detailed for us to help you. Please note that most technical problems are due to:

• Your modified or out-of-date code. If your issue is not reproducible in a new git clone version of this repo we can not debug it. Before going further run this code and verify your issue persists:

$ git clone https://github.com/ultralytics/yolov5 yolov5_new  # clone latest
$ cd yolov5_new
$ python detect.py  # verify detection

# CODE TO REPRODUCE YOUR ISSUE HERE

• Your custom data. If your issue is not reproducible in one of our 3 common datasets (COCO, COCO128, or VOC) we can not debug it. Visit our Custom Training Tutorial for guidelines on training your custom data. Examine train_batch0.jpg and test_batch0.jpg for a sanity check of your labels and images.

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If none of these apply to you, we suggest you close this issue and raise a new one using the 🐛 Bug Report template, providing screenshots and a minimum reproducible example of your issue. Thank you!

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[xiaowo1996]

@glenn-jocher hi , i get the newest by git clone. but the same error was appear.
all what i had done is i add two line code in detect.py in line 64 and line 65.
im1 = np.array(im0s.copy()) input = cv2.resize(im1, (112,112))
it can run successfully by python detect.py.but it failed by python detect.py -- source 0 or ip camera rstp camera
it is a important step for my code. my project can't detect by webcamera or ip camera. but it can detect by python detect.py offline interference. which is not conducive to project deployment.

[glenn-jocher]

@xiaowo1996 we only offer support for issues arising from the default repository code. If you believe you have a reproducible issue with unmodified code, we suggest you close this issue and raise a new one using the 🐛 Bug Report template, providing screenshots and a minimum reproducible example to help us better understand and diagnose your problem. Thank you!

[xiaowo1996]

@glenn-jocher ok , I had solve the problem. i close this issue .the data from images or video is different from stream data. if you want do some operation to image from stream data use this, im1 = np.array(im0s[0].copy()).