ovl.math.shape_fill_ratios module

ovl.math.shape_fill_ratios.circle_fill_ratio(contour: numpy.ndarray) → Tuple[float, float]

Returns the ratio between the contour and the smallest enclosing circle.

Parameters:contour – The contour to be compared Returns:the ratio, the radius of the enclosing circle Return type:float

ovl.math.shape_fill_ratios.rectangle_fill_ratio_straight(contour, reverse_div=False)

Returns the ratio between the contour and the straight bounding rectangle.

Parameters:

• contour – The contour to be compared
• reverse_div – If the rectangle’s area should be divided by the contour.

Returns:

the ratio, the width of the bounding rectangle, the height of the bounding rectangle

Return type:

float

ovl.math.shape_fill_ratios.rotating_rectangle_fill_ratio(contour: numpy.ndarray) → Tuple[float, float, float]

Returns the ratio between the contour and the smallest bounding rectangle.

Parameters:contour – The contour to be compared Returns:the ratio, the width of the bounding rectangle, the height of the bounding rectangle Return type:float, float, float

ovl.math.shape_fill_ratios.triangle_fill_ratio(contour, triangle=None) → float

Returns the ratio between a given contour and the smallest enclosing rectangle

Parameters:

• contour – numpy array
• triangle – convex hull for the minEnclosingTriangle function, can be ignored

Returns:

returns the ratio between the contour and the bounding triangle

Return type:

float