python人物视频背景替换实现虚拟空间穿梭

pip install mediapipe

import cv2
import mediapipe as mp
import numpy as np
mp_drawing = mp.solutions.drawing_utils
mp_selfie_segmentation = mp.solutions.selfie_segmentation
BG_COLOR = (0, 0, 225) # red
cap = cv2.VideoCapture('111.mp4')
with mp_selfie_segmentation.SelfieSegmentation(
    model_selection=0) as selfie_segmentation:
  bg_image = None
  while cap.isOpened():
    success, image = cap.read()
    if not success:
      break
    image = cv2.cvtColor(cv2.flip(image, 1), cv2.COLOR_BGR2RGB)
    image.flags.writeable = False
    results = selfie_segmentation.process(image)
    image.flags.writeable = True
    image = cv2.cvtColor(image, cv2.COLOR_RGB2BGR)
    condition = np.stack(
      (results.segmentation_mask,) * 3, axis=-1) > 0.8
    if bg_image is None:
      bg_image = np.zeros(image.shape, dtype=np.uint8)
      bg_image[:] = BG_COLOR
      print(bg_image.shape)
    output_image = np.where(condition, image, bg_image)
    cv2.imshow('MediaPipe Selfie Segmentation', output_image)
    if cv2.waitKey(5) & 0xFF == 27:
      break
cap.release()

bg_image = cv2.imread("BBB.jpg")