To include the missing segments in the fitted ellipse, try these approaches:

1. Weighted Fitting: Assign higher weights to the points in the missing segments using scipy.optimize.least_squares for weighted ellipse fitting.

2. Add Missing Points: Manually add synthetic points along the missing segments and refit the ellipse using cv2.fitEllipse.

3. Custom Optimization: Use scipy.optimize.minimize to define a custom loss function that prioritizes including the missing parts in the fit.

These methods give more control than RANSAC or cv2.fitEllipse.