Saturday, February 25

3D Searching : Seminar Report|PPT|PDF|DOC|Presentation|Free Download


Advances in computing power combined with interactive modeling software, which lets users create images as queries for searches, have made 3Dsearch technology possible.

Methodology used involves the following steps

" Query formulation
" Search process
" Search result


True 3D search systems offer two principal ways to formulate a query: Users can select objects from a catalog of images based on product groupings, such as gears or sofas; or they can utilize a drawing program to create a picture of the object they are looking for. or 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.

The above picture shows the query interface of a 3D search system.

SEARCH PROCESS

The 3D-search system uses algorithms to convert the selected or drawn image-based query into a mathematical model that describes the features of the object being sought. This converts drawings and objects into a form that computers can work with. The search system then compares the mathematical description of the drawn or selected object to those of 3D objects stored in a database, looking for similarities in the described features.

The key to the way computer programs look for 3D objects is the voxel (volume pixel). A voxel is a set of graphical data-such as position, color, and density-that defines the smallest cubeshaped building block of a 3D image. Computers can display 3D images only in two dimensions. To do this, 3D rendering software takes an object and slices it into 2D cross sections. The cross sections consist of pixels (picture elements), which are single points in a 2D image. To render the 3D image on a 2D screen, the computer determines how to display the 2D cross sections stacked on top of each other, using the applicable interpixel and inter slice distances to position them properly. The computer interpolates data to fill in interslice gaps and create a solid image.


4 comments:

Laxmi Choudhary said...

please send me seminar report and ppt on 3D television at
choudhary.laxmi92@gmail.com

Laxmi Choudhary said...

seminar report and ppt on paper battery at
choudhary.laxmi92@gmail.com

Laxmi Choudhary said...

Seminar report on smart TV Technology
at
choudhary.laxmi92@gmail.com

Laxmi Choudhary said...

seminar report on smart tv technolgy and 3D tv technology and paper battery at choudhary.laxmi92@gmail.com


Home About-us Computer Science Electronics Mechanical Electrical IT Civil
Copyright © 2018 www.seminartopics.org | All Rights Reserved. Design By Templateclue