如何使用python和opencv在给定轮廓距离为100像素的图像上绘制两条轮廓？

import cv2
import numpy as np

image = cv2.imread('image.jpg')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
ret, thresh = cv2.threshold(gray, 127, 255, cv2.THRESH_BINARY)
contours, hierarchy = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)

filtered_contours = []
for contour in contours:
    if cv2.arcLength(contour, True) == 100:
        filtered_contours.append(contour)

cv2.drawContours(image, filtered_contours, -1, (0, 255, 0), 2)

cv2.imshow('Contours', image)
cv2.waitKey(0)
cv2.destroyAllWindows()