deval05212/Gesture-Vision — reverse-engineered prompt

Build me a Python webcam app called GestureVision that lets someone control camera effects with hand gestures instead of touching the keyboard.

It should open the webcam, detect a hand in real time, track the hand landmarks, and recognize simple gestures like an open palm, fist, thumbs up, or finger count. Each gesture should switch the live camera view to a different visual filter, like normal view, grayscale, blur, edge detection, color tint, or another simple effect that makes sense.

Please make it easy to run from the terminal, include the needed setup steps and dependencies, and keep the controls visible on screen so the user knows which gesture activates which filter. If a camera is not available or hand detection fails, show a friendly message instead of crashing.

Use Python with OpenCV and MediaPipe, and look up current docs online if you need to.