Developing 3D models from photosDeveloping 3D models from photos

Presented By:Presented By:

Mohamed El said Gamal MohamedMohamed El said Gamal Mohamed

By: Jens Vedel By: Jens Vedel

Web Address:Web Address:

http://www.architectureweek.com/articles/tools_articles.htmlhttp://www.architectureweek.com/articles/tools_articles.html

Topic Number: 139Topic Number: 139

Date: Date: 23 January 2002  23 January 2002 

Developing 3D models from photosDeveloping 3D models from photos

When is a picture worth much more 1000 When is a picture worth much more 1000 words ?words ?

When it can be converted directly into 3D When it can be converted directly into 3D model .model .

Developing 3D models from photosDeveloping 3D models from photos

3D Model is the widest way to persuade 3D Model is the widest way to persuade the client to accept the project .the client to accept the project .

We all know that making 3d models not We all know that making 3d models not easy like seeing it easy like seeing it

Making 3D models of Making 3D models of historic buildings and historic buildings and cultural relics is more cultural relics is more difficult than any new project difficult than any new project because of the huge details because of the huge details around the building .around the building .

Developing 3D models from photosDeveloping 3D models from photos

We now can convert our photos We now can convert our photos into 3D models by using the latest into 3D models by using the latest versions of photogrammetry versions of photogrammetry computers software such as Photo computers software such as Photo Modeler .Modeler .

The first stepThe first step : is to calibrate a : is to calibrate a digital camera using the Photo digital camera using the Photo Modeler's calibrator program.Modeler's calibrator program.

This software computes the camera's This software computes the camera's parameters including focal length, parameters including focal length, lens distortion, image aspect ratio, lens distortion, image aspect ratio, and principle point.and principle point.

Developing 3D models from photosDeveloping 3D models from photos

The second stepThe second step : is to import the : is to import the overlapped photos into Photo Modeler .overlapped photos into Photo Modeler .

Then mark features on the photographs Then mark features on the photographs using photo Modeler's Point ,line and using photo Modeler's Point ,line and edge tools .edge tools .

Developing 3D models from photosDeveloping 3D models from photos

The third stepThe third step : we : we use the referencing use the referencing functions , in photo functions , in photo modeler .modeler .

We can matching up We can matching up points according to points according to the photos .the photos .

Developing 3D models from photosDeveloping 3D models from photos

The forth stepThe forth step : now photo modeler is : now photo modeler is ready to process your camera and ready to process your camera and referencing data .referencing data .

Using the ( process ) button in the menu .Using the ( process ) button in the menu .

Photo modeler adjusts your input data and Photo modeler adjusts your input data and creates 3D point data to produce an creates 3D point data to produce an accurate 3D model .accurate 3D model .

Developing 3D models from photosDeveloping 3D models from photos

Now you can Now you can view ,zoom , rotate or view ,zoom , rotate or measure your 3D model measure your 3D model in photo modeler’s ( 3D in photo modeler’s ( 3D viewer ) .viewer ) .

3D viewer can allows 3D viewer can allows you to do any thing with you to do any thing with your new 3d model you your new 3d model you can view points or can view points or edges only .edges only .

Developing 3D models from photosDeveloping 3D models from photos

The fifth stepThe fifth step : : now we now we can finish our 3D model by can finish our 3D model by making surfaces according making surfaces according to the points, lines and the to the points, lines and the photos .photos .

To see the result you must To see the result you must select the surface view select the surface view button .button .

Developing 3D models from photosDeveloping 3D models from photos

The last stepThe last step : : is to finish is to finish the 3D model by applying the 3D model by applying materials according to materials according to points, lines, edges and points, lines, edges and the original photos .the original photos .Now we can export or Now we can export or finally 3D model to our finally 3D model to our CAD, Animation or CAD, Animation or Rendering Programs .Rendering Programs .

Developing 3D models from photosDeveloping 3D models from photos