Hand-Detection

This Repository contains all the code we plan to use for implementing a Hand Detection system, which powers a mechanical crane on wheels.

Overview

We used the functions provided by mediapipe for Hand Detection as the core of the program. We also used cv2 libraries to enable camera live feed and to display the results.

Then we turn this .py file into an executable and using the ROS software, we turn the matrix output by the program to movement coordinates, which are then passed to the Arduino file Arduino_code.ino (brilliant name, yes) which powers a bot equipped with the required components.

The Code

Computing the landmarks for the different IDs issued by mediapipe, we first run a configuration cycle (CONFIG_CYCLE) to measre the extremes of the hand in the frame.

The cycle re runs everytime there is a NULL detection on the screen, making the code "switchable" between different people during the same run.

We then put all the detected gestures into a matrix for transmission.

A = [TRNSL, CLAWED]
    [ROTAT, SWITCH]

• TRNSL is the value that tells the translation state for the bot. It is denoted the by [-1, 0, 1] for [BWD, STOP, FWD]. This is detected by the realtive position of the hand on the screen.

• CLAWED is the value that tells the crane of the bot to relese or pick up objects. It is denoted by [0, 1] for [NOT_CLAWED, CLAWED]. This is detected by the relative position of the middle finger tip to the palm.

• ROTAT is the value that tells the rotation state for the bot. It is denoted the by [-1, 0, 1] for [ROT_R, NO_ROT, ROT_L]. This is detected by the orientation of the hand on the screen, the bot rotates in the direction the thumb is pointing to.

• SWITCH is the value that tells the current state of the bot. It is denoted the by [0, 1] for [OFF, ON]. The bot is turned ON when it detectes states NO_ROT and STOP for the first time.

Note: The bot never rotates in the state of translation, to manage the perfect rotation of the bot. Hence, it is always under NO_ROT if the TRNSL is set to anything other than STOP, no matter the orientation of the hand on the screen.

Get the code!

If you just want to test out the code without the ROS integrations, u can get the nROSmaster.py and run it with the above dependencies.

To get the entire Repo just run the following line on your command line to clone the Repo:

git clone https://github.com/Fifirex/Hand-Detection.git

Once you have the code, make sure to install all the required basic Python libraries using:

pip install numpy
pip install opencv-python
pip install mediapipe

Replace pip by pip3 if you have both installed on your system.

The Team

This project is created for the DIY Assignment this semester, and this is our team:

Software

@Fifirex @Aeroscythe

Mechatronics

@Viswesh-N @SM200602