ComputerVision/hand_mouse.py at main · SprihaPodder/ComputerVision · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
import cv2
import mediapipe as mp
import pyautogui
import numpy as np
import time
import math

# ---------------- SCREEN SIZE ----------------

screen_w, screen_h = pyautogui.size()

# ---------------- MEDIAPIPE ----------------

mp_hands = mp.solutions.hands
hands = mp_hands.Hands(
    max_num_hands=1,
    min_detection_confidence=0.7,
    min_tracking_confidence=0.7
)

mp_draw = mp.solutions.drawing_utils

# ---------------- CAMERA ----------------

cap = cv2.VideoCapture(0)

cam_w, cam_h = 640, 480

# ---------------- SMOOTHING ----------------

prev_x, prev_y = 0, 0
smoothening = 0.2

# ---------------- CLICK CONTROL ----------------

click_cooldown = 0
CLICK_DELAY = 0.5

# ---------------- MAIN LOOP ----------------

while True:

    ret, frame = cap.read()
    if not ret:
        break

    frame = cv2.flip(frame, 1)
    frame = cv2.resize(frame, (cam_w, cam_h))

    rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
    result = hands.process(rgb)

    fingertip = None
    pinch_dist = None

    if result.multi_hand_landmarks:
        for hand in result.multi_hand_landmarks:

            mp_draw.draw_landmarks(
                frame,
                hand,
                mp_hands.HAND_CONNECTIONS
            )

            h, w, _ = frame.shape

            # Index fingertip (cursor)
            ix = int(hand.landmark[8].x * w)
            iy = int(hand.landmark[8].y * h)

            # Thumb tip (for click)
            tx = int(hand.landmark[4].x * w)
            ty = int(hand.landmark[4].y * h)

            fingertip = (ix, iy)

            # draw cursor point
            cv2.circle(frame, fingertip, 10, (0,255,0), -1)

            # pinch distance
            pinch_dist = math.hypot(ix - tx, iy - ty)

    # ---------------- MOVE CURSOR ----------------

    if fingertip:

        # map to screen
        x = np.interp(fingertip[0], (0, cam_w), (0, screen_w))
        y = np.interp(fingertip[1], (0, cam_h), (0, screen_h))

        # smoothing
        curr_x = prev_x + (x - prev_x) * smoothening
        curr_y = prev_y + (y - prev_y) * smoothening

        pyautogui.moveTo(curr_x, curr_y)

        prev_x, prev_y = curr_x, curr_y

    # ---------------- CLICK GESTURE ----------------

    now = time.time()

    if pinch_dist and pinch_dist < 30 and now > click_cooldown:

        pyautogui.click()
        click_cooldown = now + CLICK_DELAY

        cv2.putText(
            frame,
            "CLICK",
            (20, 60),
            cv2.FONT_HERSHEY_SIMPLEX,
            1.5,
            (0,0,255),
            3
        )

    # ---------------- DISPLAY ----------------

    cv2.imshow("Hand Mouse Control", frame)

    if cv2.waitKey(1) == 27:
        break

cap.release()
cv2.destroyAllWindows()