2.2. draw_ellipse_frame()

This function is used if you want to find contours in the image within a certain color range and display the circumscribed ellipse with the label

Usage

draw_ellipse_frame(img, low, high, label, iterations, blur_strength, min_area, only_max, text_color)

Parameters:

img: image to be processed. It must be a numpy array;
low: lower color range in HSV color space. Default is tuple (0, 0, 0). Must be a tuple of 3 integers;
high: upper color range in HSV color space. Default is tuple (255, 255, 255). Must be a tuple of 3 integers;
label: label to be displayed on the frame. Default is “”. Must be a string;
iterations: number of iterations for the morphological transformation. Default is 1. Must be an integer;
blur_strength: strength of the blur. Default is 0. Must be an integer;
min_area: minimum area of the contour for detect. Default is 1000. Must be an integer;
only_max: if True, only the largest contour will be detected. Default is False. Must be a boolean;
text_color: color of the text in BGR. Default is (255, 0, 0). Must be a tuple of 3 integers.

Returns:

img: processed image
dilated: dilated image (for debug)
angle: tilt angle of the ellipse if only_max is True. If only_max is False, returns None.

WIP