Description:

"PUM" is a 3D Modeling System that has been developed for seven years. There are more than 200,000 lines of code, and so many powerful algorithms in this system. Before, this system is just used mainly for research by the guys in our lab. In many cases, in order to quickly implement their own algorithm, they write code as their pleases, somtimes even against the principles of software engineering. As time goes on, many classes and algorithms intersect with each other, and all the codes appear in only one project.

My Works:

Redesign the architecture of this system. Extract basic classes as core kernel, and divide others into plug-in modules according to their features, such as I/O plug-in, shader, controller, algorithm plug-in and so on. I will continue to work on this until graduating from peking university. Maybe soon this system will be published as an open-source project.

My Works:

When deforming on a sparse mesh, generated result mesh is inaccurate and unsatisfactory. This project proposes a novel deformation flow to solve this problem. The main idea is distributing dense particles on the surface of mesh, and using them to capture deformation effects. Result mesh has just a few triangles, but guarantees good quality.

Description:

Reconstruct 3D model by several photos that captured from different views by digital camera.

My Works:

Develop the 3D edting module, such as triangles adjusting, geometry clipping, patch picking, viewport controlling, shading, and so on.

My Works:

Use Imposter technology to simulate the crowd in visual environment: use single flat pictures instead of 3D models, and can render more than ten thousand people in real time. Besides, also use level-of-details (LOD) to balance effect and efficiency.

Description:

SHP is industry standard vector graphic format. In traditional way, loading a SHP file with 300M costs 1 minute.

My Works:

I use BHV tree and Pyramid to partition data, and load data as required. In this way, the file can be loaded and rendered in real time.

My Works:

Design and develop the whole geographic system. 1, Build cooperation module to cooperate and feed back user’s operations. For example, if one says something, all the others geographically near him will receive this message, as shown in above picture. 2, Design protocal and build network module to facilitate messages transmission. 3, Build a client and three types of server to simulate massive cooperation.

Description:

In traditional software development, user interfaces and operations for IPTV (Internet Protocol Television) are entirely different between PC and TV environment.

My Works:

I aim to design a uniform interface to integrate user perception and operation, and reduce the efforts to learn. With this system, users can request and watch videos on PC with mouse and keyboard, or on TV with remote control. After some configurations, this system can also be controlled by mobile phone or pad. Because I use Silverlight, this system can also run cross platform.

My Works:

One of my greate interests is "WWW", and I have built many sites for free or for commerce. Some of them, as above, has more than one thousand visitors per day.