Video Anamorphosis

Anamorphosis is a distorted projection requiring the viewer to occupy a specific vantage point to view a recognizable image.

The goal of this project is to project an image or video onto any surface in such a way that it looks perfect when viewed from a specific angle.

Results

The following images show the projector point-of-view (left) and the observer point-of-view (right):

• Virtual anamorphosis on a point cloud

• Real-life anamorphosis on a wooden board

Project report is available here.

Dependencies

Dependency	Version	Description
GLFW	3.3	OpenGL context creation
GLEW	2.1.0	OpenGL extension loader
GLM	0.9.9.6	OpenGL math library
Kinect SDK	2.0	Windows Kinect API
stb_image	2.23	Image loading library
FFmpeg	4.2.1	Video loading library

Controls

Key	Function
R	Toggle depth recording
V	Switch between video and image mode
D	Toggle debug mode
O	Project colour data back onto objects
S	Save depth data as depth.bmp
Up, Down	[Debug mode] Rotate view horizontally
Left, Right	[Debug mode] Move view vertically
+, -	[Debug mode] Resize projection
Scroll wheel	[Debug mode] Change projection radius
W	[Debug mode] Toggle wireframe mode
M	[Debug mode] Toggle missing data approximation
C	[Debug mode] Toggle calibration mode
K	[Debug mode] Switch between point mapping modes
Space	[Debug mode] Toggle between live view and projection
Enter	[Debug mode] Apply projection to current position
1	[Debug mode] Move camera to projector view
2	[Debug mode] Move camera to observer view
Esc	Exit

How to use

1. Install dependencies
2. Connect an Xbox One Kinect and a projector (set as secondary monitor) to your computer
3. Adjust the following parameters at the top of the main.cpp as necessary:
   • Anamorphic angle, radius and field of view
   • Image and video file paths
   • Projector resolution and field of view
4. Compile and run
5. Use calibration mode to align kinect and projector
6. Done!