如何在Scikit-Image中检测到的轮廓上绘制边界框？

Question

我试图找到一种在scikit-image中检测到的轮廓上绘制边界框的方法，但我找不到任何方法，因为scikit-image方法中的find_contours返回坐标的二维数组检测到的轮廓的点。

Answer 1

您可以使用这段代码在图像上绘制边界：

# Loop through contours and draw the bounds in red
contours = skimage.measure.find_contours(img, level)

for contour in contours:
    img = drawShape(img, contour, [255, 0, 0]) 

def drawShape(img, coordinates, color)
    # In order to draw our line in red
    img = skimage.color.gray2rgb(img)

    # Make sure the coordinates are expressed as integers
    coordinates = coordinates.astype(int)

    img[coordinates[:, 0], coordinates[:, 1]] = color

    return img