OpenCV错误：connectedComponents_sub1中的断言失败（L.channels（）==1&&I.channels（）==1）

Question

我在OpenCV（python）中遇到了以下错误，我在google上搜索了很多次，但都没能解决。在

如果有人能给我一些线索，我将不胜感激。在

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

Answer 1

让我们分析一下：

Assertion failed (L.channels() == 1 && I.channels() == 1)

传递给某个函数的图像应该是1通道（灰色而不是彩色）。在

__extractPlantArea(plant_img)

在您的代码中正好发生在名为__extractPlantArea的函数处。在

cv2.connectedComponentsWithStats

调用名为connectedComponentsWithStats的OpenCV函数时。在

结论：

不要将彩色（BGR）图像传递给connectedComponentsWithStats