问题
I got the following error in OpenCV (python) and have googled a lot but have not been able to resolve.
I would be grateful if anyone could provide me with some clue.
OpenCV Error: Assertion failed (L.channels() == 1 && I.channels() == 1) in connectedComponents_sub1, file /home/snoopy/opencv- 3.1.0/modules/imgproc/src/connectedcomponents.cpp, line 341 Traceback (most recent call last): File "test.py", line 30, in plant = analyzeplant.analyzeSideView(plant) File "/home/snoopy/Desktop/Leaf-201612/my-work- editing/ripps/src/analyzePlant.py", line 229, in analyzeSideView plant_img = self.__extractPlantArea(plant_img) File "/home/snoopy/Desktop/Leaf-201612/my-work- editing/ripps/src/analyzePlant.py", line 16, in __extractPlantArea output = cv2.connectedComponentsWithStats(plant, 4, cv2.CV_32S) cv2.error: /home/snoopy/opencv- 3.1.0/modules/imgproc/src/connectedcomponents.cpp:341: error: (-215) > L.channels() == 1 && I.channels() == 1 in function connectedComponents_sub1
回答1:
Let us analyze it:
Assertion failed (L.channels() == 1 && I.channels() == 1)
The images that you are passing to some function should be 1 channel (gray not color).
__extractPlantArea(plant_img)
That happened in your code exactly at the function called __extractPlantArea.
cv2.connectedComponentsWithStats
While you are calling the OpenCV function called connectedComponentsWithStats.
Conclusion:
Do not pass colorful (BGR) image to connectedComponentsWithStats
来源：https://stackoverflow.com/questions/41257336/opencv-error-assertion-failed-l-channels-1-i-channels-1-in-conne