Week 4. Problem with test image in do_salience with untrained model

Course Q&A TensorFlow: Advanced Techniques Specialization Advanced Computer Vision with TensorFlow
1

Hello, I have a problem with Generate saliency maps with untrained model.
I load the 5 images like the notebook of C3_W4_Lab2_CatsDogs-CAM.
And when I use my function do_salience with for example the first image ‘cat1.jpg’ I get this error:

error: OpenCV(4.8.0) /io/opencv/modules/imgproc/src/color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cvtColor’

I dont know where is the problem, because the image is not empty.
When I check outside the function I can see the image perfectaly using this code:

img= cv2.imread(‘cat1.jpg’)
img_rgb = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
plt.imshow(img_rgb, cmap=‘gray’)
plt.title(‘Gato 1’)
plt.show()

Wish someone can help me.

2

Are you sure your cat1.jpg exist in the root directory?

Just cat1.jpg means the image exists in the root directory. For example, images/cat1.jpg mean that cat1.jpg image exists in images folder.

3

Finally I was able to solve the problem.
I restart the kernel and run all the notebook again.

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