🖐️ Gesture Volume Control

Control your system volume using hand gestures via webcam!

💾 Requirements: opencv-python mediapipe==0.10.9 comtypes numpy pycaw

bashpip install -r requirements.txt

🚀 How to Run bash

Step 1 - Create virtual environment

py -3.10 -m venv .venv

Step 2 - Activate

.venv\Scripts\activate

Step 3 - Install libraries

pip install -r requirements.txt

Step 4 - Run

python main.py

🖐️ Gestures GestureAction👐 Fingers far apartVolume Up🤏 Fingers close togetherVolume DownQ keyQuit

📝 Code Explanation Importing Libraries pythonimport cv2 import numpy as np from ctypes import cast, POINTER from comtypes import CLSCTX_ALL from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume from mediapipe.python.solutions import hands as mp_hands_module from mediapipe.python.solutions import drawing_utils as mp_drawing

Volume Control Setup using pycaw pythondevices = AudioUtilities.GetSpeakers() activate = devices._dev.Activate( IAudioEndpointVolume.iid, CLSCTX_ALL, None) volume = cast(activate, POINTER(IAudioEndpointVolume))

Getting Volume Range pythonvol_range = volume.GetVolumeRange() min_vol = vol_range[0] max_vol = vol_range[1]

Setting up Webcam using OpenCV pythoncap = cv2.VideoCapture(0)

MediaPipe Hand Detection pythonhands = mp_hands_module.Hands( max_num_hands=1, min_detection_confidence=0.7)

Getting Thumb and Index Finger Position pythonthumb_tip = hand_landmarks.landmark[mp_hands_module.HandLandmark.THUMB_TIP] index_tip = hand_landmarks.landmark[mp_hands_module.HandLandmark.INDEX_FINGER_TIP]

x1, y1 = int(thumb_tip.x * w), int(thumb_tip.y * h) x2, y2 = int(index_tip.x * w), int(index_tip.y * h)

Calculating Distance Between Fingers pythondef get_distance(p1, p2): return np.sqrt((p2[0] - p1[0])**2 + (p2[1] - p1[1])**2)

length = get_distance((x1, y1), (x2, y2))

Converting Distance to Volume using numpy.interp() pythonvol = np.interp(length, [30, 200], [min_vol, max_vol]) vol_percent = np.interp(length, [30, 200], [0, 100])

Setting System Volume pythonvolume.SetMasterVolumeLevel(vol, None)

Drawing Volume Bar pythoncv2.rectangle(frame, (bar_x, bar_top), (bar_x + 30, bar_bottom), (200, 200, 200), 2) cv2.rectangle(frame, (bar_x, bar_height), (bar_x + 30, bar_bottom), (0, 255, 0), cv2.FILLED)

Displaying Output pythoncv2.imshow("Gesture Volume Control", frame) if cv2.waitKey(1) & 0xFF == ord('q'): break

Made with ❤️ using Python, OpenCV and MediaPipe