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01_predict_hand_pose.py
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01_predict_hand_pose.py
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# -*- codeing = utf-8 -*-
# @Time :2023/3/31 20:18
# @Author :yujunyu
# @Site :
# @File :predict.py
# @software: PyCharm
import cv2
import numpy as np
import os
from matplotlib import pyplot as plt
import time
import mediapipe as mp
import tensorflow as tf
mp_holistic = mp.solutions.holistic # holistic model
# mp_hands = mp.solutions.hands
mp_drawing = mp.solutions.drawing_utils # drawing utilities
def mediapipe_detection(image, model):
image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB) # BGR->RGB
image.flags.writeable = False # image is no longer writeable
results = model.process(image) # make prediction
image = cv2.cvtColor(image, cv2.COLOR_RGB2BGR) # RGB->BGR
return image, results
def draw_styled_landmarks(image, results):
# draw face connections
mp_drawing.draw_landmarks(image, results.face_landmarks, mp_holistic.FACEMESH_CONTOURS,
mp_drawing.DrawingSpec(color=(80, 110, 10), thickness=1, circle_radius=1),
mp_drawing.DrawingSpec(color=(80, 0, 121), thickness=1, circle_radius=1)
)
# draw pose connections
mp_drawing.draw_landmarks(image, results.pose_landmarks, mp_holistic.POSE_CONNECTIONS,
mp_drawing.DrawingSpec(color=(80, 22, 10), thickness=2, circle_radius=4),
mp_drawing.DrawingSpec(color=(80, 44, 121), thickness=2, circle_radius=2)
)
# draw left hand connections
mp_drawing.draw_landmarks(image, results.left_hand_landmarks, mp_holistic.HAND_CONNECTIONS,
mp_drawing.DrawingSpec(color=(121, 22, 76), thickness=2, circle_radius=4),
mp_drawing.DrawingSpec(color=(121, 44, 250), thickness=2, circle_radius=2)
)
# draw right hand connections
mp_drawing.draw_landmarks(image, results.right_hand_landmarks, mp_holistic.HAND_CONNECTIONS,
mp_drawing.DrawingSpec(color=(245, 117, 66), thickness=2, circle_radius=4),
mp_drawing.DrawingSpec(color=(245, 66, 230), thickness=2, circle_radius=2)
)
def extract_keypoints(results):
pose = np.array([[res.x, res.y, res.z, res.visibility] for res in
results.pose_landmarks.landmark]).flatten() if results.pose_landmarks else np.zeros(33 * 4)
face = np.array([[res.x, res.y, res.z] for res in results.face_landmarks.landmark]).flatten() if results.face_landmarks else np.zeros(
468 * 3)
lh = np.array(
[[res.x, res.y, res.z] for res in results.left_hand_landmarks.landmark]).flatten() if results.left_hand_landmarks else np.zeros(
21 * 3)
rh = np.array(
[[res.x, res.y, res.z] for res in results.right_hand_landmarks.landmark]).flatten() if results.right_hand_landmarks else np.zeros(
21 * 3)
#
if results.left_hand_landmarks:
lh_xy_list = []
for index, lm in enumerate(results.left_hand_landmarks.landmark):
lh_xy_list.append([lm.x, lm.y])
else:
lh_xy_list = []
if results.right_hand_landmarks:
rh_xy_list = []
for index, lm in enumerate(results.right_hand_landmarks.landmark):
rh_xy_list.append([lm.x, lm.y])
else:
rh_xy_list = []
return np.concatenate([pose, face, lh, rh]), lh_xy_list, rh_xy_list
def prob_viz(res, actions, input_frame, colors):
output_frame = input_frame.copy()
for num, prob in enumerate(res):
# print(num, prob)
'''
0 0.01494145
1 0.8505417
2 0.13451675
'''
# print(num) # 0 1 2
cv2.rectangle(output_frame, (0, 60 + num * 35), (int(prob * 100), 90 + num * 35), colors[num], -1)
cv2.putText(output_frame, actions[num] + ' {:.2f}'.format(prob), (0, 85 + num * 35), cv2.FONT_HERSHEY_SIMPLEX, 1,
(255, 255, 255), 2, cv2.LINE_AA)
return output_frame
def show_hand_center(image, w, h, lh_xy_list, rh_xy_list):
if len(lh_xy_list) != 0:
# 取hand的9，最靠近中间的坐标
lx, ly = int(lh_xy_list[9][0] * w), int(lh_xy_list[9][1] * h)
print(f'左:{lx, ly}')
cv2.putText(image, 'lh', (lx, ly), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 0), 3)
if len(rh_xy_list) != 0:
rx, ry = int(rh_xy_list[9][0] * w), int(rh_xy_list[9][1] * h)
print(f'右:{rx, ry}')
cv2.putText(image, 'rh', (rx, ry), cv2.FONT_HERSHEY_SIMPLEX, 1, (255, 255, 255), 3)
def real_time_predict():
# 1.New detection variables
sequence = []
sentence = []
threshold = 0.8
# Open capture
cap = cv2.VideoCapture(0)
# fps
fps_count = 0
start_time = time.time()
pTime = 0
# Set mediapipe model
with mp_holistic.Holistic(min_detection_confidence=0.5, min_tracking_confidence=0.5) as holistic:
while cap.isOpened():
# Read feed
rer, frame = cap.read()
# filp
# frame = cv2.flip(frame, 1)
# Make detection
image, results = mediapipe_detection(frame, holistic)
# print(results)
# Draw landmarkd
draw_styled_landmarks(image, results)
# 2. Prediction logic
keypoints, lh_xy_list, rh_xy_list = extract_keypoints(results)
# 1)
# sequence.insert(0, keypoints)
# 2) error
# sequence.append(keypoints)
# sequence=sequence[:30]
sequence.append(keypoints)
sequence = sequence[-30:]
# show hand center
h, w, c = image.shape
show_hand_center(image, w, h, lh_xy_list, rh_xy_list)
if len(sequence) == 30:
res = model.predict(np.expand_dims(sequence, axis=0))[0]
# print(res)
print(actions[np.argmax(res)], np.max(res))
if res[np.argmax(res)] > threshold:
if len(sentence) > 0:
if actions[np.argmax(res)] != sentence[-1]:
sentence.append(actions[np.argmax(res)])
else:
sentence.append(actions[np.argmax(res)])
if len(sentence) > 5:
sentence = sentence[-5:]
print(sentence[-1])
# 4.Vix probabilities
image = prob_viz(res, actions, image, colors)
cv2.rectangle(image, (0, 0), (640, 40), (245, 117, 16), -1)
cv2.putText(image, ' '.join(sentence), (3, 30), cv2.FONT_HERSHEY_SIMPLEX, 1, (255, 255, 255), 2, cv2.LINE_AA)
# # 计算FPS
fps_count += 1
elapsed_time = time.time() - start_time
if elapsed_time > 1: # 每隔1秒钟更新一次FPS
fps = fps_count / elapsed_time
print("\033[33mFPS:{:.2f}\033[0m".format(fps))
fps_count = 0
start_time = time.time()
# FPS
cTime = time.time()
fps = 1 / (cTime - pTime)
pTime = cTime
cv2.putText(image, f'fps:{int(fps)}', (500, 85), cv2.FONT_HERSHEY_SIMPLEX, 1.0, (120, 117, 255), 2, cv2.LINE_AA)
# Show to screen
cv2.imshow('Real-Time-Test', image)
# Break
if cv2.waitKey(1) & 0xff == ord('q'):
break
cap.release()
cv2.destroyAllWindows()
if __name__ == '__main__':
import os
os.environ["CUDA_VISIBLE_DEVICES"] = "-1" # 这一行注释掉就是使用gpu，不注释就是使用cpu
actions = np.array(['hello', 'thanks', 'iloveyou'])
model = tf.keras.models.load_model("action_example.h5")
colors = [(245, 117, 16), (117, 245, 16), (16, 117, 245)]
real_time_predict()