Easy to Use Interface

Automatic Bloodstain Ellipse Detection

Click on the stain and HemoSpat uses image recognition techniques to approximate the ellipse. If it needs to be adjusted, use the ellipse control points - a couple of clicks with the mouse and you're done. As the analyst, you maintain control over how the ellipse is fit to the bloodstain.
Bloodstain ellipse selection

Ellipse Guidelines

Optional guidelines will show you the box around the ellipse selection to help you fit the ellipse to the bloodstain.
Guidelines off Guidelines on

Invert Colours

In order to increase the contrast between the bloodstain and the background, it is sometimes useful to invert the colours in the image.
Normal stain image Inverted stain image

Quick Stain Location Entry

Enter your stain names and locations quickly using the Quick Entry window. On the left, the current working image of the stain you are editing is shown. On the right is the table where you can tab through and quickly modify the name and location data for each stain.
Quick Stain Entry
Quick Stain Entry Window

Original Photo Information

Digital cameras often save additional information about the photos, called EXIF data, in the photos themselves. This includes data such as the camera make and model, when the photo was taken, and if the flash was used or not. With HemoSpat, you can see this information if it is available.
Original Image Information
Original Image Information

Save Each Step

HemoSpat saves all the analytical work done by the user. Should you see a problem with one of your strings, it is a simple matter to pull up the individual stain and look at the ellipse, plumb, and scale placement. This also allows for a proper peer evaluation because the evaluator will be able to see all the work that went into generating the final result.

Drag & Drop To Manage Images and Bloodstain Patterns

HemoSpat supports the analysis of more than one pattern at a time and includes several ways to import your digital images into the project. Simply drag your images to the window to add it to a pattern or create a new one. Moving stains between patterns is as easy as dragging the image from one pattern to the other.

Stain Selection

Once the main stain in a reference photo has been analyzed, you may identify and use any other bloodstain in the photo. This speeds up the documentation process, allows you to use more stains, and allows peer review of the stain selection process.
HemoSpat - Point Select Tool
HemoSpat stain selection using the point select tool

Analyze Angled (Non-orthogonal) Surfaces

HemoSpat has an easy-to-use surface editor that allows you add any flat (planar) surface to the scene for your analysis. These surfaces may be exported to your crime scene reconstruction software to give you a framework to start from or to double-check that everything lines up properly in your model.
HemoSpat data imported into Preview [Mac OS X]
HemoSpat data imported into Preview on Mac OS X

Use Relative Locations

To make the measurement of stain locations on angled surfaces easier, HemoSpat introduced the concept of relative stain locations. This allows you to measure the stain locations relative to the surface's bottom-left corner, greatly simplifying the documentation process and saving you a lot of time.

Relative stain location entry
Relative stain location entry

Real-time Area of Origin Calculation

The area of origin is calculated in real time for each pattern. This means that as you change your stain data, the origin is automatically recalculated and the 2D views updated. Export the data at any time to see a snapshot in 3D.
HemoSpat data imported into SketchUp [Mac OS X]
HemoSpat data imported into SketchUp on Mac OS X
Area of origin is indicated - tangent lines for the impact spatter are not shown
HemoSpat data imported into AutoCAD [Windows XP]
HemoSpat data imported into AutoCAD on Windows XP
Area of origin is indicated in green

Use Experiment Mode

If you are conducting an experiment and you know the origin of the impact pattern, turning on Experiment Mode lets you specify the known origin for the impact pattern. HemoSpat will use this to calculate and display the delta against the calculated origin.
HemoSpat Experiment Mode
Experiment mode
The known origin is optionally included when using HemoSpat's 2D Viewer.
Known Origin in HemoSpat's 2D Viewer
Known origin indicated in HemoSpat's 2D Viewer
If you export to any of the 3D formats to view your scene in Apple Preview or SketchUp, you can include the known origin in the 3D diagram as well.
Known Origin in 3D - Apple's Preview
Known origin indicated in COLLADA file - viewed with Apple Preview

Export Your Data

HemoSpat stores its data and the analysis in the project. It is, however, your data and you should be able to use it however you like. You should not have to manually enter this data again into other software for further analysis. Your data may be exported in various formats for reports, directional analysis using other software, or for use in crime scene reconstruction.
Export menu

HemoSpat exports to several formats:

* DAE and DXF files have been verified by MicroSurvey Software to work with MapScenes & IMS Map360.
** DXF files have been verified by The CAD Zone to work with The Crime Zone.
HemoSpat data imported into Preview.app [Mac OS X 10.7]
HemoSpat data imported into Preview on Mac OS X 10.7

We can also provide custom exporters for other formats if the details of the format are available.

Integrate With Point Clouds

HemoSpat provides tutorials on how to integrate your bloodstain pattern data with point clouds using software such as IMS Map360, CloudCompare, and CZ Point Cloud.
HemoSpat data imported into IMS Map360 [Windows 7]
HemoSpat data imported into IMS Map360 [Windows 7]
HemoSpat data imported into CloudCompare [Mac OS X 10.6]
HemoSpat data imported into CloudCompare on Mac OS X 10.6
HemoSpat data imported into CZ Point Cloud [Windows 7]
HemoSpat data imported into CZ Point Cloud on Windows 7

Integrate With Other 3D Software

HemoSpat also provides tools and tutorials to integrate your bloodstain pattern data with other 3D software such as SketchUp and The Crime Zone.
HemoSpat data imported into SketchUp [Mac OS X]
HemoSpat data imported into a simple room using SketchUp on Mac OS X 10.6
HemoSpat data imported into The Crime Zone [Windows 7]
HemoSpat data imported into The Crime Zone on Windows 7

Document The Crime Scene

Choose Your Coordinate System

Traditionally, the 3D coordinate system used in the field of bloodstain pattern analysis to record bloodstain locations is the right-handed coordinate system.
Right-handed Coordinate System
Right-handed Coordinate System
For some people, however, the 'x' and 'y' axes seem "backwards" because they visualize 3D space in terms of the left-hand coordinate system.
Left-handed Coordinate System
Left-handed Coordinate System

HemoSpat lets you choose which coordinate system you want to use.

Data Forms

We provide forms to be used at the crime scene for recording bloodstain location information and surface information. They are laid out according to how the data is input into HemoSpat when analyzing a scene. These may also be filed with your case paperwork for future reference.
Scene Coordinate Data Form Surface Dimension Data Form

Work On Your Platform

HemoSpat is available for macOS 10.11-10.12 (64-bit Intel), and Windows 7/8/8.1/10.
Mac OS X 10.6 interface Windows XP interface Windows 7 interface