回答編集履歴
2
修正
test
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@@ -2,7 +2,7 @@
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- OpenCV3 ⇒ image, contours, hierarchy
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[OpenCV: Structural Analysis and Shape Descriptors](https://docs.opencv.org/3.4.6/d3/dc0/group__imgproc__shape.html#ga9
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[OpenCV: Structural Analysis and Shape Descriptors](https://docs.opencv.org/3.4.6/d3/dc0/group__imgproc__shape.html#ga17ed9f5d79ae97bd4c7cf18403e1689a)
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- OpenCV4 ⇒ contours, hierarchy
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1
追記
test
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@@ -2,7 +2,11 @@
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- OpenCV3 ⇒ image, contours, hierarchy
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[OpenCV: Structural Analysis and Shape Descriptors](https://docs.opencv.org/3.4.6/d3/dc0/group__imgproc__shape.html#ga95f5b48d01abc7c2e0732db24689837b)
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- OpenCV4 ⇒ contours, hierarchy
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[OpenCV: Structural Analysis and Shape Descriptors](https://docs.opencv.org/4.1.0/d3/dc0/group__imgproc__shape.html#gadf1ad6a0b82947fa1fe3c3d497f260e0)
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@@ -12,7 +16,19 @@
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```Python
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-
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image, contours, hierarchy = cv2.findContours(...)
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```
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---
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また質問のようにcontoursしか使わないのならば、次のように書けば充分です。
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```Python
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_, contours, _ = cv2.findContours(...)
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```
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@@ -22,6 +38,6 @@
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```Python
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contours
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contours = cv2.findContours(...)[1]
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```
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