Unsupported depth of input image: > ‘vdepth::contains(depth)’ > where > ‘depth’ is 6 (cv_64f)

The error message “unsupported depth of input image: > ‘vdepth::contains(depth)’ > where > ‘depth’ is 6 (cv_64f)” indicates that the depth of the input image is not supported by the operation being performed. The ‘depth’ value of 6 corresponds to a 64-bit floating-point depth in OpenCV (cv_64f).

This error commonly occurs when trying to apply functions or operations that only support specific image depth types. It happens because not all functions are compatible with every possible image depth. In this case, the operation you are performing does not support a 64-bit floating-point image depth.

To resolve this issue, you have a few options:

1. Convert the image to a supported depth: You can convert the image to a different depth type that is supported by the operation. OpenCV provides functions like cv2.convertTo() or cv2.normalize() that allow you to change the image depth. For example, you can convert the image to 8-bit unsigned integer (cv_8u) using cv2.convertTo(image, cv2.cv_8u). Make sure to check the documentation of the particular operation to determine the supported image depths.

   
import cv2

   image = cv2.imread('input_image.jpg') # Load the image
image = cv2.convertTo(image, cv2.cv_8u) # Convert to 8-bit unsigned integer
# Continue with the operation that caused the error


2. Check the input image: Verify that the input image is loaded correctly and has the expected depth. You can add print statements or use the cv2.cvtype() function to check the image depth. If the image depth does not match the expected input of the operation, you may need to preprocess the image or select a different image to work with.

   
import cv2

   image = cv2.imread('input_image.jpg') # Load the image
print(image.dtype) # Print the image depth


3. Choose a different function or operation: If the image depth cannot be modified or the desired operation is not supported for the current image depth, you may need to explore alternative functions or operations that can achieve the desired result. Consider researching different approaches or techniques to accomplish your objective using a compatible depth.