【精选】【优秀课设】基于OpenCV+MediaPipe的手势识别（数字、石头剪刀布等手势识别）_石头剪刀布opencv识别代码_网易独家音乐人Mike Zhou的博客-CSDN博客
import cv2
import mediapipe as mp
import math
def vector_2d_angle(v1, v2):
'''
求解二维向量的角度
'''
v1_x = v1[0]
v1_y = v1[1]
v2_x = v2[0]
v2_y = v2[1]
try:
angle_ = math.degrees(math.acos(
(v1_x * v2_x + v1_y * v2_y) / (((v1_x ** 2 + v1_y ** 2) ** 0.5) * ((v2_x ** 2 + v2_y ** 2) ** 0.5))))
except:
angle_ = 65535.
if angle_ > 180.:
angle_ = 65535.
return angle_
def hand_angle(hand_):
'''
获取对应手相关向量的二维角度,根据角度确定手势
'''
angle_list = []
# ---------------------------- thumb 大拇指角度
angle_ = vector_2d_angle(
((int(hand_[0][0]) - int(hand_[2][0])), (int(hand_[0][1]) - int(hand_[2][1]))),
((int(hand_[3][0]) - int(hand_[4][0])), (int(hand_[3][1]) - int(hand_[4][1])))
)
angle_list.append(angle_)
# ---------------------------- index 食指角度
angle_ = vector_2d_angle(
((int(hand_[0][0]) - int(hand_[6][0])), (int(hand_[0][1]) - int(hand_[6][1]))),
((int(hand_[7][0]) - int(hand_[8][0])), (int(hand_[7][1]) - int(hand_[8][1])))
)
angle_list.append(angle_)
# ---------------------------- middle 中指角度
angle_ = vector_2d_angle(
((int(hand_[0][0]) - int(hand_[10][0])), (int(hand_[0][1]) - int(hand_[10][1]))),
((int(hand_[11][0]) - int(hand_[12][0])), (int(hand_[11][1]) - int(hand_[12][1])))
)
angle_list.append(angle_)
# ---------------------------- ring 无名指角度
angle_ = vector_2d_angle(
((int(hand_[0][0]) - int(hand_[14][0])), (int(hand_[0][1]) - int(hand_[14][1]))),
((int(hand_[15][0]) - int(hand_[16][0])), (int(hand_[15][1]) - int(hand_[16][1])))
)
angle_list.append(angle_)
# ---------------------------- pink 小拇指角度
angle_ = vector_2d_angle(
((int(hand_[0][0]) - int(hand_[18][0])), (int(hand_[0][1]) - int(hand_[18][1]))),
((int(hand_[19][0]) - int(hand_[20][0])), (int(hand_[19][1]) - int(hand_[20][1])))
)
angle_list.append(angle_)
return angle_list
def h_gesture(angle_list):
'''
# 二维约束的方法定义手势
# fist five gun love one six three thumbup yeah
'''
thr_angle = 65. # 手指闭合则大于这个值（大拇指除外）
thr_angle_thumb = 53. # 大拇指闭合则大于这个值
thr_angle_s = 49. # 手指张开则小于这个值
gesture_str = "Unknown"
if 65535. not in angle_list:
if (angle_list[0] > thr_angle_thumb) and (angle_list[1] > thr_angle) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] > thr_angle):
gesture_str = "0"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] < thr_angle_s) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] > thr_angle):
gesture_str = "1"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] < thr_angle_s) and (angle_list[2] < thr_angle_s) and (
angle_list[3] > thr_angle) and (angle_list[4] > thr_angle):
gesture_str = "2"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] < thr_angle_s) and (angle_list[2] < thr_angle_s) and (
angle_list[3] < thr_angle_s) and (angle_list[4] > thr_angle):
gesture_str = "3"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] < thr_angle_s) and (angle_list[2] < thr_angle_s) and (
angle_list[3] < thr_angle_s) and (angle_list[4] < thr_angle_s):
gesture_str = "4"
elif (angle_list[0] < thr_angle_s) and (angle_list[1] < thr_angle_s) and (angle_list[2] < thr_angle_s) and (
angle_list[3] < thr_angle_s) and (angle_list[4] < thr_angle_s):
gesture_str = "5"
elif (angle_list[0] < thr_angle_s) and (angle_list[1] > thr_angle) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] < thr_angle_s):
gesture_str = "6"
elif (angle_list[0] < thr_angle_s) and (angle_list[1] < thr_angle_s) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] > thr_angle):
gesture_str = "8"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] > thr_angle) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] < thr_angle_s):
gesture_str = "Pink Up"
elif (angle_list[0] < thr_angle_s) and (angle_list[1] > thr_angle) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] > thr_angle):
gesture_str = "Thumb Up"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] > thr_angle) and (angle_list[2] < thr_angle_s) and (
angle_list[3] > thr_angle) and (angle_list[4] > thr_angle):
gesture_str = "Fuck"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] > thr_angle) and (angle_list[2] < thr_angle_s) and (
angle_list[3] < thr_angle_s) and (angle_list[4] < thr_angle_s):
gesture_str = "Princess"
elif (angle_list[0] < thr_angle_s) and (angle_list[1] < thr_angle_s) and (angle_list[2] < thr_angle_s) and (
angle_list[3] > thr_angle) and (angle_list[4] > thr_angle):
gesture_str = "Bye"
elif (angle_list[0] < thr_angle_s) and (angle_list[1] < thr_angle_s) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] < thr_angle_s):
gesture_str = "Spider-Man"
elif (angle_list[0] > thr_angle_thumb) and (angle_list[1] < thr_angle_s) and (angle_list[2] > thr_angle) and (
angle_list[3] > thr_angle) and (angle_list[4] < thr_angle_s):
gesture_str = "Rock'n'Roll"
return gesture_str
def detect():
mp_drawing = mp.solutions.drawing_utils
mp_hands = mp.solutions.hands
hands = mp_hands.Hands(
static_image_mode=False,
max_num_hands=1,
min_detection_confidence=0.75,
min_tracking_confidence=0.75)
cap = cv2.VideoCapture(0)
while True:
ret, frame = cap.read()
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
frame = cv2.flip(frame, 1)
results = hands.process(frame)
frame = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
if results.multi_handedness:
for hand_label in results.multi_handedness:
hand_jugg = str(hand_label).split('"')[1]
print(hand_jugg)
cv2.putText(frame, hand_jugg, (50, 200), 0, 1.3, (0, 0, 255), 2)
if results.multi_hand_landmarks:
for hand_landmarks in results.multi_hand_landmarks:
mp_drawing.draw_landmarks(frame, hand_landmarks, mp_hands.HAND_CONNECTIONS)
hand_local = []
for i in range(21):
x = hand_landmarks.landmark[i].x * frame.shape[1]
y = hand_landmarks.landmark[i].y * frame.shape[0]
hand_local.append((x, y))
if hand_local:
angle_list = hand_angle(hand_local)
gesture_str = h_gesture(angle_list)
print(gesture_str)
cv2.putText(frame, gesture_str, (50, 100), 0, 1.3, (0, 0, 255), 2)
cv2.imshow('MediaPipe Hands', frame)
if cv2.waitKey(1) & 0xFF == 27:
break
cap.release()
cv2.destroyAllWindows()
if __name__ == '__main__':
detect()
代码的解释请参考
【精选】【优秀课设】基于OpenCV+MediaPipe的手势识别（数字、石头剪刀布等手势识别）_石头剪刀布opencv识别代码_网易独家音乐人Mike Zhou的博客-CSDN博客