Project Mapping with Yunshui Jin
Today I attended an innovation workshop with Yunshui Jin, called 'A thousand faces' interactive installation, where we were taught about project mapping.
Yunshui Jin comes from Shanghai and went to University there and does projection installations and 3D animation. He showed us some of his work and examples of projection mapping, which is when an irregular surface is able to have a projection on it. An example of this that he showed us that I really liked was this video below that was for Desperados. Using projection and project mapping peoples tattoos were able to come alive and move. I thought it was really amazing, especially as it is hard to project onto humans.
Ink Mapping: Video Mapping Projection on Tattoos, by Oskar & Gaspar from Oskar & Gaspar on Vimeo.
The work he had done that he showed us is the 'A thousand faces' project. This is an interactive installation where there is a huge face and visitors can choose one of the many masks on offer and when they hold it up the pattern on the mask is then projected onto the face!
Yunshui Jin then taught us how to project map. It is a challenging thing to do because projecting onto a flat surface is easy however doing it on a 3D surface means that the image becomes distorted. The two types of distortion are:
Yunshui Jin comes from Shanghai and went to University there and does projection installations and 3D animation. He showed us some of his work and examples of projection mapping, which is when an irregular surface is able to have a projection on it. An example of this that he showed us that I really liked was this video below that was for Desperados. Using projection and project mapping peoples tattoos were able to come alive and move. I thought it was really amazing, especially as it is hard to project onto humans.
Ink Mapping: Video Mapping Projection on Tattoos, by Oskar & Gaspar from Oskar & Gaspar on Vimeo.
The work he had done that he showed us is the 'A thousand faces' project. This is an interactive installation where there is a huge face and visitors can choose one of the many masks on offer and when they hold it up the pattern on the mask is then projected onto the face!
Yunshui Jin then taught us how to project map. It is a challenging thing to do because projecting onto a flat surface is easy however doing it on a 3D surface means that the image becomes distorted. The two types of distortion are:
- Trapezium distortion/keystone effect - where the project is distorted
- Geometrical distortion - where the object is distorted
To project an image onto an irregular surface you must pre distort an image on special software. The method is to:
- Create correct pattern on 3D surface
- Put virtual camera with same position as projector
- Render image out and get correct distorted image
However texture mapping means you do not need to distort the image, and also 3D painting can remove distortion in images.
