mag*_*gle 4 python opencv detection segment python-3.x
我试图在 Python 3 中使用 OpenCV4 库中的 FastLineDetector 来检测图像中的线条和段,但似乎没有办法让它工作。我在这里阅读了文档:https : //docs.opencv.org/3.4/df/d4c/classcv_1_1ximgproc_1_1FastLineDetector.html对我来说仍然没有什么清楚。我已经安装了 OpenCV 4.1.0,并且在 Ubuntu 18.0.4 中运行 Python 3.6。
这是我单独尝试过的代码:
img = cv2.imread('/tmp/output0.png', cv2.CV_8UC1)
fld = cv2.ximgproc_FastLineDetector.detect(img)
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fld = cv2.ximgproc_FastLineDetector.detect(cv2.ximgproc_FastLineDetector(img))
fld.detect(img)
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以下是输出错误:
fld = cv2.ximgproc_FastLineDetector.detect(img)
Traceback (most recent call last):
File "<input>", line 1, in <module>
TypeError: descriptor 'detect' requires a 'cv2.ximgproc_FastLineDetector' object but received a 'numpy.ndarray'
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fld = cv2.ximgproc_FastLineDetector.detect(cv2.ximgproc_FastLineDetector(img))
Traceback (most recent call last):
File "<input>", line 1, in <module>
TypeError: Incorrect type of self (must be 'ximgproc_FastLineDetector' or its derivative)
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有人知道如何使用 FastLineDetector 或有一个例子吗?
顺便说一下,与 cv.ximgproc.createFastLineDetector() 有什么区别吗?
干得好
def FLD(image):
# Create default Fast Line Detector class
fld = cv2.ximgproc.createFastLineDetector()
# Get line vectors from the image
lines = fld.detect(image)
# Draw lines on the image
line_on_image = fld.drawSegments(image, lines)
# Plot
plt.imshow(line_on_image, interpolation='nearest', aspect='auto')
plt.show()
return line_on_image
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