09-10-2014, 10:35 AM
3D SEARCHING
3D SEARCHING.pptx (Size: 969.61 KB / Downloads: 24)
INTRODUCTION
3D searching is a new method used to search 3D objects in a data house in the base of our submitted query.
A search system which is capable of retrieving similar 3D models based on their shape is known as the 3Dsearch engine.
NEED FOR 3D SEARCH ENGINE
Consider a person who wants to build a 3D virtual world representing a city scene. He will need 3D models of cars, street lamps, stop signs etc. Will he buy a 3D modeling tool and build them himself? Or, will he acquire them from a large repository of 3D models on web?
And obviously the answer is he will search in web for the model.
Query formulation
True 3D search systems offer two principal ways to formulate a query:
1- Users can select objects from a catalog of image based on product groupings, such as gears or sofas.
2- They can utilize a drawing program to create a picture of the object they are looking for. For example, Princeton’s 3D search engine uses an application to let users draw a 2D or 3D representation of the object they want to find
2-Princeton University Search system
The Princeton search engine, like its Purdue counterpart, uses mathematical representations to store the salient characteristics of 3D shapes in its data- edges, and nodes.
The system can analyze a query by comparing either its feature-vector set potential obstacles.
Searchers can refine their queries by adding a text description.
ADVANTAGES
3D searching is very effective in the search process of 3D objects.
It provides various searching process as well.
Query interface is a very useful term in the search process by which we can select any process for searching our model by various types of queries like text search.
CONCLUSION
3D search engine helps to have an idea of 3D model of any thing on web.
Most of today’s individual and corporate computer users don’t conduct the type of searches that would justify paying for and learning to use sophisticated 3D search engines .
However, within those markets, 3D search could prove useful and successful.