opencv python中的元组植入

tpgth1q7 于 2023-02-09 发布在 Python

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我有这个代码的代码，我为文本检测

def drawRedRectangleAroundPlate(imgOriginalScene, licPlate):
    p2fRectPoints = cv2.boxPoints(licPlate.rrLocationOfPlateInScene)            # get 4 vertices of rotated rect

    cv2.line(imgOriginalScene, tuple(p2fRectPoints[0]), tuple(p2fRectPoints[1]), SCALAR_RED, 2)         # draw 4 red lines
    cv2.line(imgOriginalScene, tuple(p2fRectPoints[1]), tuple(p2fRectPoints[2]), SCALAR_RED, 2)
    cv2.line(imgOriginalScene, tuple(p2fRectPoints[2]), tuple(p2fRectPoints[3]), SCALAR_RED, 2)
    cv2.line(imgOriginalScene, tuple(p2fRectPoints[3]), tuple(p2fRectPoints[0]), SCALAR_RED, 2)
# end function

我遇到了一个我不明白的回溯问题

cv2.line(imgOriginalScene, tuple(p2fRectPoints[0]), tuple(p2fRectPoints[1]), SCALAR_RED, 2)         # draw 4 red lines
cv2.error: OpenCV(4.7.0) :-1: error: (-5:Bad argument) in function 'line'
> Overload resolution failed:
>  - Can't parse 'pt1'. Sequence item with index 0 has a wrong type
>  - Can't parse 'pt1'. Sequence item with index 0 has a wrong type

opencv

来源：https://stackoverflow.com/questions/75350526/tuple-implatation-in-python

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按热度按时间

ih99xse11#

你写道：

cv2.line(imgOriginalScene, tuple(p2fRectPoints[0]), tuple(p2fRectPoints[1]), SCALAR_RED, 2)

文档解释了.line()接受

void cv::line   (   InputOutputArray    img,
        Point   pt1,
        Point   pt2,
        const Scalar &      color, 
        ... )

p2fRectPoints有四个点，每个点都有（x，y）坐标，所以不用tuple(x, y)来构造两个整数的点，你可以直接传入p2fRectPoints[0]，不需要调用tuple，你可以检查type(p2fRectPoints[0])，它应该是Point（或tuple）。

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opencv python中的元组植入

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