# To use Inference Engine backend, specify location of plugins: # export LD_LIBRARY_PATH=/opt/intel/deeplearning_deploymenttoolkit/deployment_tools/external/mklml_lnx/lib:$LD_LIBRARY_PATH import cv2 as cv import numpy as np import argparse parser = argparse.ArgumentParser( description='This script is used to demonstrate OpenPose human pose estimation network ' 'from https://github.com/CMU-Perceptual-Computing-Lab/openpose project using OpenCV. ' 'The sample and model are simplified and could be used for a single person on the frame.') parser.add_argument('--input', help='Path to image or video. Skip to capture frames from camera') parser.add_argument('--proto', help='Path to .prototxt') parser.add_argument('--model', help='Path to .caffemodel') parser.add_argument('--dataset', help='Specify what kind of model was trained. ' 'It could be (COCO, MPI) depends on dataset.') parser.add_argument('--thr', default=0.1, type=float, help='Threshold value for pose parts heat map') parser.add_argument('--width', default=368, type=int, help='Resize input to specific width.') parser.add_argument('--height', default=368, type=int, help='Resize input to specific height.') parser.add_argument('--inf_engine', action='store_true', help='Enable Intel Inference Engine computational backend. ' 'Check that plugins folder is in LD_LIBRARY_PATH environment variable') args = parser.parse_args() if args.dataset == 'COCO': BODY_PARTS = { "Nose": 0, "Neck": 1, "RShoulder": 2, "RElbow": 3, "RWrist": 4, "LShoulder": 5, "LElbow": 6, "LWrist": 7, "RHip": 8, "RKnee": 9, "RAnkle": 10, "LHip": 11, "LKnee": 12, "LAnkle": 13, "REye": 14, "LEye": 15, "REar": 16, "LEar": 17, "Background": 18 } POSE_PAIRS = [ ["Neck", "RShoulder"], ["Neck", "LShoulder"], ["RShoulder", "RElbow"], ["RElbow", "RWrist"], ["LShoulder", "LElbow"], ["LElbow", "LWrist"], ["Neck", "RHip"], ["RHip", "RKnee"], ["RKnee", "RAnkle"], ["Neck", "LHip"], ["LHip", "LKnee"], ["LKnee", "LAnkle"], ["Neck", "Nose"], ["Nose", "REye"], ["REye", "REar"], ["Nose", "LEye"], ["LEye", "LEar"] ] else: assert(args.dataset == 'MPI') BODY_PARTS = { "Head": 0, "Neck": 1, "RShoulder": 2, "RElbow": 3, "RWrist": 4, "LShoulder": 5, "LElbow": 6, "LWrist": 7, "RHip": 8, "RKnee": 9, "RAnkle": 10, "LHip": 11, "LKnee": 12, "LAnkle": 13, "Chest": 14, "Background": 15 } POSE_PAIRS = [ ["Head", "Neck"], ["Neck", "RShoulder"], ["RShoulder", "RElbow"], ["RElbow", "RWrist"], ["Neck", "LShoulder"], ["LShoulder", "LElbow"], ["LElbow", "LWrist"], ["Neck", "Chest"], ["Chest", "RHip"], ["RHip", "RKnee"], ["RKnee", "RAnkle"], ["Chest", "LHip"], ["LHip", "LKnee"], ["LKnee", "LAnkle"] ] inWidth = args.width inHeight = args.height net = cv.dnn.readNetFromCaffe(args.proto, args.model) if args.inf_engine: net.setPreferableBackend(cv.dnn.DNN_BACKEND_INFERENCE_ENGINE) cap = cv.VideoCapture(args.input if args.input else 0) while cv.waitKey(1) < 0: hasFrame, frame = cap.read() if not hasFrame: cv.waitKey() break frameWidth = frame.shape[1] frameHeight = frame.shape[0] inp = cv.dnn.blobFromImage(frame, 1.0 / 255, (inWidth, inHeight), (0, 0, 0), swapRB=False, crop=False) net.setInput(inp) out = net.forward() assert(len(BODY_PARTS) == out.shape[1]) points = [] for i in range(len(BODY_PARTS)): # Slice heatmap of corresponging body's part. heatMap = out[0, i, :, :] # Originally, we try to find all the local maximums. To simplify a sample # we just find a global one. However only a single pose at the same time # could be detected this way. _, conf, _, point = cv.minMaxLoc(heatMap) x = (frameWidth * point[0]) / out.shape[3] y = (frameHeight * point[1]) / out.shape[2] # Add a point if it's confidence is higher than threshold. points.append((int(x), int(y)) if conf > args.thr else None) for pair in POSE_PAIRS: partFrom = pair[0] partTo = pair[1] assert(partFrom in BODY_PARTS) assert(partTo in BODY_PARTS) idFrom = BODY_PARTS[partFrom] idTo = BODY_PARTS[partTo] if points[idFrom] and points[idTo]: cv.line(frame, points[idFrom], points[idTo], (0, 255, 0), 3) cv.ellipse(frame, points[idFrom], (3, 3), 0, 0, 360, (0, 0, 255), cv.FILLED) cv.ellipse(frame, points[idTo], (3, 3), 0, 0, 360, (0, 0, 255), cv.FILLED) t, _ = net.getPerfProfile() freq = cv.getTickFrequency() / 1000 cv.putText(frame, '%.2fms' % (t / freq), (10, 20), cv.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 0)) cv.imshow('OpenPose using OpenCV', frame)