171 lines
6.8 KiB
Python
171 lines
6.8 KiB
Python
import math
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import json
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import numpy as np
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import matplotlib
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import cv2
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eps = 0.01
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def draw_pose_json(pose_json, resolution_x, show_body, show_face, show_hands, pose_marker_size, face_marker_size, hand_marker_size):
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pose_imgs = []
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if pose_json:
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if pose_json.startswith('{'):
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pose_json = '[{}]'.format(pose_json)
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images = json.loads(pose_json)
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for image in images:
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figures = image['people']
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H = image['canvas_height']
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W = image['canvas_width']
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bodies = []
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candidate = []
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subset = [[]]
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faces = []
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hands = []
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for figure in figures:
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body = figure['pose_keypoints_2d']
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face = figure['face_keypoints_2d']
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lhand = figure['hand_left_keypoints_2d']
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rhand = figure['hand_right_keypoints_2d']
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if body:
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for i in range(0,len(body),3):
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candidate.append(body[i:i+2])
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if not subset[0]:
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subset[0].extend([len(subset[0])+(i//3) if body[i+2]>0 else -1 for i in range(0,len(body),3)])
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else:
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subset.append([len(subset[0])*len(subset)+(i//3) if body[i+2]>0 else -1 for i in range(0,len(body),3)])
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if face:
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faces.append([face[i:i+2] for i in range(0,len(face),3)])
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if lhand:
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hands.append([lhand[i:i+2] for i in range(0,len(lhand),3)])
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if rhand:
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hands.append([rhand[i:i+2] for i in range(0,len(rhand),3)])
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candidate = np.array(candidate).astype(float)
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subset = np.array(subset)
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faces = np.array(faces).astype(float)
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hands = np.array(hands).astype(float)
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normalized = max(np.max(candidate[...,0]),np.max(candidate[...,1]),np.max(faces[...,0]),np.max(faces[...,1]),np.max(hands[...,0]),np.max(hands[...,1]))
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if normalized>2.0:
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candidate[...,0] /= float(W)
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candidate[...,1] /= float(H)
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faces[...,0] /= float(W)
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faces[...,1] /= float(H)
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hands[...,0] /= float(W)
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hands[...,1] /= float(H)
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bodies = dict(candidate=candidate, subset=subset)
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pose = dict(bodies=bodies, faces=faces, hands=hands)
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pose = dict(bodies=bodies if show_body else {'candidate':[], 'subset':[]}, faces=faces if show_face else [], hands=hands if show_hands else [])
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W_scaled = resolution_x
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if resolution_x < 64:
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W_scaled = W
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H_scaled = int(H*(W_scaled*1.0/W))
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pose_img = draw_pose(pose, H_scaled, W_scaled, pose_marker_size, face_marker_size, hand_marker_size)
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pose_imgs.append(pose_img)
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return pose_imgs
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def draw_pose(pose, H, W, pose_marker_size, face_marker_size, hand_marker_size):
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bodies = pose['bodies']
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faces = pose['faces']
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hands = pose['hands']
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candidate = bodies['candidate']
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subset = bodies['subset']
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canvas = np.zeros(shape=(H, W, 3), dtype=np.uint8)
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canvas = draw_bodypose(canvas, candidate, subset, pose_marker_size)
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canvas = draw_handpose(canvas, hands, hand_marker_size)
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canvas = draw_facepose(canvas, faces, face_marker_size)
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return canvas
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def draw_bodypose(canvas, candidate, subset, pose_marker_size):
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H, W, C = canvas.shape
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candidate = np.array(candidate)
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subset = np.array(subset)
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# stickwidth = 4
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limbSeq = [[2, 3], [2, 6], [3, 4], [4, 5], [6, 7], [7, 8], [2, 9], [9, 10], \
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[10, 11], [2, 12], [12, 13], [13, 14], [2, 1], [1, 15], [15, 17], \
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[1, 16], [16, 18], [3, 17], [6, 18]]
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colors = [[255, 0, 0], [255, 85, 0], [255, 170, 0], [255, 255, 0], [170, 255, 0], [85, 255, 0], [0, 255, 0], \
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[0, 255, 85], [0, 255, 170], [0, 255, 255], [0, 170, 255], [0, 85, 255], [0, 0, 255], [85, 0, 255], \
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[170, 0, 255], [255, 0, 255], [255, 0, 170], [255, 0, 85]]
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for i in range(17):
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for n in range(len(subset)):
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index = subset[n][np.array(limbSeq[i]) - 1]
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if -1 in index:
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continue
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Y = candidate[index.astype(int), 0] * float(W)
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X = candidate[index.astype(int), 1] * float(H)
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mX = np.mean(X)
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mY = np.mean(Y)
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length = ((X[0] - X[1]) ** 2 + (Y[0] - Y[1]) ** 2) ** 0.5
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angle = math.degrees(math.atan2(X[0] - X[1], Y[0] - Y[1]))
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polygon = cv2.ellipse2Poly((int(mY), int(mX)), (int(length / 2), pose_marker_size), int(angle), 0, 360, 1)
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cv2.fillConvexPoly(canvas, polygon, colors[i])
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canvas = (canvas * 0.6).astype(np.uint8)
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for i in range(18):
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for n in range(len(subset)):
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index = int(subset[n][i])
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if index == -1:
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continue
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x, y = candidate[index][0:2]
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x = int(x * W)
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y = int(y * H)
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cv2.circle(canvas, (int(x), int(y)), pose_marker_size, colors[i], thickness=-1)
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return canvas
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def draw_handpose(canvas, all_hand_peaks, hand_marker_size):
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H, W, C = canvas.shape
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edges = [[0, 1], [1, 2], [2, 3], [3, 4], [0, 5], [5, 6], [6, 7], [7, 8], [0, 9], [9, 10], \
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[10, 11], [11, 12], [0, 13], [13, 14], [14, 15], [15, 16], [0, 17], [17, 18], [18, 19], [19, 20]]
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for peaks in all_hand_peaks:
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peaks = np.array(peaks)
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for ie, e in enumerate(edges):
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x1, y1 = peaks[e[0]]
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x2, y2 = peaks[e[1]]
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x1 = int(x1 * W)
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y1 = int(y1 * H)
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x2 = int(x2 * W)
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y2 = int(y2 * H)
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if x1 > eps and y1 > eps and x2 > eps and y2 > eps:
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cv2.line(canvas, (x1, y1), (x2, y2), matplotlib.colors.hsv_to_rgb([ie / float(len(edges)), 1.0, 1.0]) * 255, thickness=1 if hand_marker_size == 0 else hand_marker_size)
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joint_size=0
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if hand_marker_size < 2:
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joint_size = hand_marker_size + 1
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else:
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joint_size = hand_marker_size + 2
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for i, keyponit in enumerate(peaks):
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x, y = keyponit
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x = int(x * W)
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y = int(y * H)
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if x > eps and y > eps:
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cv2.circle(canvas, (x, y), joint_size, (0, 0, 255), thickness=-1)
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return canvas
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def draw_facepose(canvas, all_lmks, face_marker_size):
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H, W, C = canvas.shape
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for lmks in all_lmks:
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lmks = np.array(lmks)
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for lmk in lmks:
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x, y = lmk
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x = int(x * W)
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y = int(y * H)
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if x > eps and y > eps:
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cv2.circle(canvas, (x, y), face_marker_size, (255, 255, 255), thickness=-1)
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return canvas
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