1
edit
Changes
→XB PointStream: Rendering Point Clouds with WebGL
[http://asalga.wordpress.com/ Andor Salga] presented on XB PointStream. This presentation was to introduce WebGL which allows hardware-accelerated graphics on the web and the XB PoinStream’s capabilities. Also the Seneca’s Center for Development of Open Technology has partnered with Arius3D to develop XB PointStream, an open source JavaScript framework for streaming and rendering point clouds (3D images) on a web page. Andor also showed us interesting assortment of demos and 3D graphics.
Andor talked about Arius3D. Arius3D creates imaging solutions that allow organizations to capture and share unique physical objects in digital form. Arius3D is a type of 3D object scanner and is based on 17 years of research by the National Research Council Institute for Information Technology. Arius3D offers 3D imaging systems and services as well as image licensing from a growing 3D image library. Arius3D digital 3D Images are used in virtual museums, feature films, video games, education, marketing & advertising, product design and manufacturing. Then he talked about PointStream 3D ImagePlayer for Windows. The problem with this is that it works with the Active X Plug-in and only works with Windows and draws 3D point clouds in IE. It requires installation and requires permissions. He told that why he used points and what a point cloud is. He later talked about polygons and then the difference between polygons and point clouds. The most interesting part was when Andor talked about the solution to the problem he mentioned above. He talked about XB(Cross Browser) PointStream which is an open source technology. It emulates Aruis3D's PointStream and streams data using JavaScript and streams and draws point clouds using HTML5. Thus Andor is working on the open source cross browser PointStrean using WebGL which is a subset of OpenGL. It gives direct access to the graphics card and is supported by all major browserslike Firefox, Chrome, WebKit, Opera Next. Then Andor talked about some XB PointStream features which are parsers, shaders and cameras. Parsers-ASC is easy to parse and easy to edit, whereas Parsers- PSI is not so easy to parse ad it is four to five times smaller than ASC. Shaders are the programs that run on GPU and there is no fixed function pipeline. Atlast, Andor showed a few demos of how this works and we can see a 3D image with PointStream on certain images using 3D glasses.
Andor is a Computer Programming and analysis graduate from Seneca College and currently enrolled in the Bachelor of Software Development Degree. He works at CDOT as a research assistant developing open source WebGL libraries such as [http://www.c3dl.org/ C3DL], [http://processingjs.org/ Processing.js] and [http://zenit.senecac.on.ca/wiki/index.php/XB_PointStream XB PointStream]. It is also interesting that Andor works on this project on his own, whereas there is a big community of people working on processing.js. Thus, the presentation on XB PoinStream was interesting.