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CRIME SCENE BLOOD PATTERN ANALYSIS TUTORIALS

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Offline Michael

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PostPosted: Fri Oct 17, 2008 12:06 am   Post subject: CRIME SCENE BLOOD PATTERN ANALYSIS TUTORIALS   

CRIME SCENE BLOOD PATTERN ANALYSIS TUTORIALS



This sticky shall house all tutorials and links to the same, on blood pattern analysis within a crime scene environment.

First stop, as an introduction, Wikipedia:



Bloodstain pattern analysis



More General Introduction on HowStuffWorks:


How Bloodstain Pattern Analysis Works


Professional Tutorial:


[url=http://www.bloodspatter.com/BPATutorial.htm]BLOODSTAIN PATTERN ANALYSIS
TUTORIAL[/url]


Last edited by Michael on Sat Nov 15, 2008 6:10 am, edited 3 times in total.
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Offline Michael

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PostPosted: Fri Oct 17, 2008 12:20 am   Post subject: BLOOD PATTERN ANALYSIS POWERPOINT TUTORIALS   

BLOOD PATTERN ANALYSIS POWERPOINT TUTORIALS



Two Blood Pattern Analysis Powerpoint Tutorials from the University of Dundee:

Ref:
DUNDEE UNIVERSITY


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Last edited by Michael on Sat Nov 15, 2008 6:05 am, edited 1 time in total.
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Offline Michael

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PostPosted: Fri Oct 31, 2008 1:04 am   Post subject: BLOODSTAIN PHOTOGRAPHY   

BLOODSTAIN PHOTOGRAPHY



BLOODSTAIN PHOTOGRAPHY


George Schiro, Forensic Scientist wrote:
Bloodstain Photography

Once the walk through is completed, the notes must be supplemented with other forms of documentation, such as videotape, photographs, and/or sketches.

Videotape can be an excellent medium for documenting bloodstains at a crime scene. If a video camera is available, it is best used after the initial walk through. This is to record the evidence before any major alterations have occurred at the scene. Videotape provides a perspective on the crime scene layout that cannot be as easily perceived in photographs and sketches. It is a more natural viewing medium to which people can readily relate, especially in demonstrating the structure of the crime scene and how the evidence relates to those structures.

The value of videotaping blood evidence is that the overall relationship of various blood spatters and patterns can be demonstrated. One example of this could be a beating homicide. In this case, videotape can show the overall blood spatter patterns and how these spatters are inter related. The videotape can also show the relationship of the spatters to the various structures at the crime scene. In cases where the suspect may have been injured (such as stabbing homicides), the video camera can be used to document any blood trails that may lead away from the scene. If videotaping indoors, the camera can show how the various areas are laid out in relation to each other and how they can be accessed. This is particularly valuable when recording peripheral bloodstains that may be found in other rooms. The high intensity light source can also be used for illuminating the bloodstains to make them more visible on the videotape.

Whether a video camera is available or not, it is absolutely essential that still photographs are taken to document the crime scene and any associated blood evidence. If a video camera is available, then still photography will be the second step in recording the crime scene. If video is not available, then still photography will be the first step. Photographs can demonstrate the same type of things that the videotape does, but crime scene photographs can also be used to record close up details, record objects at any scaled size, and record objects at actual size. These measurements and recordings are more difficult to achieve with videotape.

Blood evidence can be photographed using color print film and/or color slide film. Infrared film can also be used for documenting bloodstains on dark surfaces. Overall, medium range, and close up photographs should be taken of pertinent bloodstains. Scaled photographs (photographs with a ruler next to the evidence) must also be taken of items in cases where size relevance is significant or when direct (one-to-one) comparisons will be made, such as with bloody shoeprints, fingerprints, high velocity blood spatter patterns, etc. A good technique for recording a large area of blood spatter on a light colored wall is to measure and record the heights of some of the individual blood spatters. The overall pattern on the wall including a yard stick as a scale is then photographed with slide film. After the slide is developed, it can be projected onto a blank wall or onto the actual wall many years after the original incident. By using a yardstick, the original blood spatters can be viewed at their actual size and placed in their original positions. Measurements and projections can then be made to determine the spatters' points of origin.

by George Schiro
Louisiana State Police Crime Laboratory
P. O. Box 66614
Baton Rouge, LA 70896
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Offline ronaldlupe


Joined: Mon Sep 28, 2009 11:55 pm

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PostPosted: Tue Sep 29, 2009 12:04 am   Post subject: Re: CRIME SCENE BLOOD PATTERN ANALYSIS TUTORIALS   

yeah i seen this before, i really appreciated this one


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Offline GerryG


Joined: Thu Apr 08, 2010 8:22 pm

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PostPosted: Thu Apr 08, 2010 8:24 pm   Post subject: Re: CRIME SCENE BLOOD PATTERN ANALYSIS TUTORIALS   

This is a good piece of writing mate for this particular topic. I was wondering if I could use this write-up on my website, I will link it back to your website though. If this is a problem please let me know and I will take it down right away.


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Offline Michael

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PostPosted: Fri Apr 09, 2010 12:27 pm   Post subject: Re: CRIME SCENE BLOOD PATTERN ANALYSIS TUTORIALS   

GerryG wrote:
This is a good piece of writing mate for this particular topic. I was wondering if I could use this write-up on my website, I will link it back to your website though. If this is a problem please let me know and I will take it down right away.


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Hi and welcome. Sure that's fine, we have an open source policy here. Although, it may be better to credit the original authors directly rather then PMF. But I leave that up to you.

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