This presents a real time video based pointing method which allows sketching and writing of English text over air in front of camera. Proposed method track the colored finger tip in the video frames and Here Colour Detection and tracking is used in order to achieve the objective. The colour marker in detected and a mask is produced. It includes the further steps of morphological operations on the mask produced which are Erosion and Dilation. Erosion reduces the impurities present in the mask and dilation further restores the eroded main mask. It helps to draw on a screen just by waiving your finger fitted with a colorful point or a simple colored cap. We will be using the computer vision techniques of OpenCV to build this project. The preferred language is python due to its exhaustive libraries and easy to use syntax but understanding the basics it can be implemented in any OpenCV supported language. Ever thought, waiving your finger into the air can draw on a real canvas. How this air canvas in Computer Vision Projects works. In this computer vision project that is a Air canvas which helps to draw on a screen just by waiving your finger fitted with a colorful point or a simple colored cap. It was OpenCV which came to the rescue for these computer vision projects. The proposed method provides a natural human-system interaction in such way that it do not require keypad, stylus, pen or glove etc for character input.

1. Computer Vision-
Open CV
Presented By:
Aviral Chaurasia,
ECE, 4th Year

2. Computer Vision
• It’s combination of AI, ML & Image Processing.
• It enable computer to acquire, analyzes and
understand the digital images, as humans see &
understand.
• Humans use their eyes and their brains to see and
visually sense the environment around them.
• Open CV is open source Computer Vision &
Machine Learning Software Library.
• It is widely used in object detection, facial
recognition, motion gesture & image processing
• It is cross platform & run on any OS.

3. Application of Open CV
1. Face Recognition- Facebook & Google
Photos used to automatically tag &
organize photos.
2. Camera- Uses AI to identify faces &
objects
3. Motion Gesture
4. Security and Surveillance
5. & many more………..

4. Components of a Open CV System:
Lighting
Scene
Camera
Computer
Scene Interpretation

5. FLOWCHART:

6. Computer Vision Project Implemented with Open CV

8. What is the Project?
It uses the techniques of OpenCV and detects your finger points
making a sketch following your fingers. You can draw anything in
the air in the allotted space and can choose the pen of any color
you want to highlight certain information.

9. What is the Project?

10. Working of the Project?

11. Result of the Project?

12. Result of the Project?

13. Result of the Project?