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The outline provides context for photographs of the crime scene, and assists investigators in preserving the evidence. Modern investigators almost never use chalk or tape as outlines at a crime scene to avoid contaminating the evidence. Although rare in modern investigations, they have become a literary trope in popular culture.
Crime Scene Sketching: the drawing of a crime scene; in the sketch, an investigator includes measurements and dimensions to aid in displaying the layout of the scene. This helps support the information shown in photographs of the scene. [6] Demonstrative evidence: any visible, physical evidence used in legal proceedings. These are used to ...
Sketching the scene is also a standard form of documentation at a crime scene. Crime scene sketches allow for notes to be taken as investigators may take measurements and other data that may not be easily detected from only a photograph. [7] The investigators will draw out locations of evidence and all other objects in the room.
Bloodstain pattern analysis (BPA) is a forensic discipline focused on analyzing bloodstains left at known, or suspected crime scenes through visual pattern recognition and physics-based assessments. This is done with the purpose of drawing inferences about the nature, timing and other details of the crime. [ 1 ]
CSI technicians are responsible for crime scene photography, fingerprinting, evidence collection, report writing, and crime scene sketching.
The taping should continue throughout the crime scene using wide-angle, close up, and even macro (extreme close up) shots to demonstrate the layout of the evidence and its relevance to the crime scene. [4] The final phase in documenting the scene is making a crime scene sketch.
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