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Crime Scenes and Accident Scenes
What can
the DeltaSphere-3000 3D Laser Scanner and SceneVision-3D Software do for you?
(Click on any image below for
a larger version.)
At the scene - capture the scene in 3D and color with the DeltaSphere-3000
- Capture
Measurements of an entire crime or accident scene - tens of millions of measurements -
automatically. The DeltaSphere-3000 does a complete 360° scan in 2 - 15
minutes and measures everything it can see. It uses only the space needed by a
standard photographer's tripod. Scan from multiple locations and combine the
scans to capture everything.
- Photograph
- dozens of high-resolution images, blanketing a scene - automatically in just a few minutes.
These pictures can be used on their own or combined with the measurements
to create color models. Take additional close-up photos with our calibrated
camera to add extra detail to key areas of the scene with high-resolution
insets.
On your laptop - view, measure, diagram, reconstruct, present with
SceneVision-3D software
- Measure
the distance between any two points - just point and click on your
laptop - or measure the perpendicular distance from any point to the floor
or to a wall. Make these measurements on your pc at the scene, or back in your office, from the data captured. Minimize time
and effort at the scene. Make additional measurements, as needed, months or
years later - long after the scene has been disturbed.
- Combine multiple scans of
a scene into a single 3D computer graphics model
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quickly and easily. Do 3D Crime Scene Reconstruction in minutes.
- View
the model from any vantage point. Look at the scene directly from
above, from outside the window, from inside a closet.
- Create outline
diagrams of the scene - with accurate measurements - quickly and easily. Use
the Wall Wizard to quickly and easily produce all the edges of a
room, complete with measurements. Display the 3D model with the
measurement lines - or just show the lines alone as a simple diagram. Add
accurate, measured outlines of doors, windows, furniture - any objects in
the scene - directly from the data captured with the DeltaSphere scanner.
- Analyze blood
spatter trajectories.
- Add high-resolution, photo
'hot spots' of critical data.
- Create specific Viewpoints
corresponding to the location of an officer or suspect. Show the location of
the viewpoint in the scene - and demonstrate precisely what was visible from
that location.
- Automatically produce and
display the location of the camera for any photo taken with the DeltaSphere
camera.
- Create a 'walk through' of
the scene for automatic replay.
- Present the 3D model of
the scene to colleagues or in court. Show the scene from any viewpoint, at
any scale.
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Measurements
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The image
to the left is a scan of a staged murder scene. The operator specified
the vertical field
of view (65°) and the horizontal field
of view (360°) He specified the point density (13.33 points per degree)
and the rest was automatic. Each
vertical line of this data contains almost 1,000 measurements -
approximately 4 million measurements in all. It takes the DeltaSphere 12
minutes to make over 9 million measurements. A 'low-resolution',
360° scan with over 1 million measurements takes less than 3 minutes.
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this scene the operator chose not to
scan the ceiling but could have captured all the data overhead as well,
in the same amount of time.) The accuracy is better than 1/4in. The data that appears
curved, like the edge of the floor or the top of the closet, results
from displaying this 3D data as a 2D projection. These are not
distortions in the data. When displayed in 3D these edges display
correctly. |
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Photograph
Color images taken with the DeltaSphere's calibrated, professional
digital camera and lens are transferred directly to the laptop for
immediate display. Easily make camera adjustments from the laptop to
guarantee high quality images. |
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Measure
This
image shows a close-up of the data shown in the first image above. As soon as this data is acquired
you can measure the distance between any two points. Two measurements are shown
- the width of the painting, and the distance of the foot from the wall.
If you can see two points in a DeltaSphere scan you can find the
distance between them. SceneVision includes many more advanced
measurement functions as well. |
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Model
Using
the scanned data, you can create a 3D model of the entire
scene, or of objects in the scene. The model can be created in SceneVision-3D,
or with other modeling software. This image shows the data, (which has been
processed and simplified using PolyWorks software from
InnovMetric,) as a 'wire frame' model. This
model can be viewed from any viewpoint in SceneVision. It can also be
displayed with full color captured at the scene. |
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View
This
image shows the same data viewed with actual scene color 'mapped' to the model
above. This is not just an image - it's a full, 3D model. SceneVision includes tools for mapping color to the 3D data. |
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Viewpoints
and Camera Locations A person's location is
illustrated with a vertical line and pyramid at the eye height as shown
in the image on the left. Clicking on the pyramid changes the viewpoint
to exactly what a person would see in that position. Similarly, the
purple pyramid illustrates the location of the camera used to take the
close-up photo of blood spatter shown on the wall. This camera location
is automatically generated by SceneVision-3D for any image taken with
the DeltaSphere system's camera. Note that the camera does not need to
mounted on the DeltaSphere for a photo like this, nor does the location
of the camera have to be noted while at the scene. SceneVision-3D
determines its location by information in the photo and the scene's
laser data.
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Outline
This image
shows a simple, accurate outline of the murder scene above. It was
created in a matter of minutes using SceneVision-3D's measurement
functions. Even data not captured, like parts of the ceiling or corners
hidden by furniture, can be calculated by simply extending surfaces to
find the missing edges. SceneVision-3D's Wall Wizard produces
these measurements and drawings quickly and easily. |
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Blood
Spatter
SceneVision provides functions and display for
visualizing close up images of blood spatter in 3D, and projecting their
trajectories from calculations made by the specialist, or within the
program. The image on the left shows simulated blood spatter on a wall.
Three spatter drops were measured and the purple lines represent their
calculated trajectories in 3D. The blue line represents a line from the
source drawn perpendicular to the wall. |
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Photo
Hot Spots
In SceneVision, you can attach a close-up photo to any
point in a scene. In the image to the left, a photo of a weapon has been
added to the scene and will appear whenever the user double clicks on
the appropriate annotation. |
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Any
Viewpoint
Once the model is created, it can be viewed from any viewpoint in real time on
any standard PC. These two images below show the same scene from two other
viewpoints. (The black parts of the images are areas not scanned - either
outside the room or underneath the tripod. The 'floating' lines in the right
image are parts of the window seen in the left image.)
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For another example of a scanned murder
scene, click on Kitchen Murder
here or in the menu on the left.
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