photogrammetry
Photogrammetry and Its Use in Forensic Photography and Forensic Sciences
Introduction
Moffett and Mikhail assert that the term “photogrammetry” refers to the activities of “(1) photographing an object; (2) measuring the image of the object on the processed photograph; and (3) reducing the measurements to some form such as a topographic map” or a scale crime scene diagram. (as cited in Robinson, 2010, p. 401).
Use in Forensic Photography “Sometimes the evidence at the crime scene is so numerous or so intricate that locating all the items of within the scene would require an excessive amount of measurements” claims Baker and Fricke (cited in Robinson, 2010, p. 401). For example at an aviation accident scene, with scattered debris, liquid run-off, gouge marks, extraneous damage, etc.
“The on-scene investigator will have no way of knowing what may later be important for the reconstruction subsequently used to analyze the scene” Whitnall and Millen-Playter (citation in Robinson, 2010, p. 401). With the pressure at an accident scene and with only instinct to go on, an evidence technician may not know just what is important for the reconstruction of the accident insist Baker and Fricke.
Sometimes, for whatever the reasons, the investigator does not have the time to take conventional measurements. Photogrammetry allows them, whenever necessary to go back and evaluate the photographs and measurements and notes that they have done. Importance in Criminal Investigations
It promotes greater efficiency. It is faster than both the coordinate and the total station survey methods, the law enforcement officer only needs his camera to help them gather all of the important information quickly and accurately, so that they can clear out faster and get traffic back to normal at accident scenes (Cooner & Balke, 2000)..
The method provides material for reference. A trained expert can go back and look at
Introduction
Moffett and Mikhail assert that the term “photogrammetry” refers to the activities of “(1) photographing an object; (2) measuring the image of the object on the processed photograph; and (3) reducing the measurements to some form such as a topographic map” or a scale crime scene diagram. (as cited in Robinson, 2010, p. 401).
Use in Forensic Photography “Sometimes the evidence at the crime scene is so numerous or so intricate that locating all the items of within the scene would require an excessive amount of measurements” claims Baker and Fricke (cited in Robinson, 2010, p. 401). For example at an aviation accident scene, with scattered debris, liquid run-off, gouge marks, extraneous damage, etc.
“The on-scene investigator will have no way of knowing what may later be important for the reconstruction subsequently used to analyze the scene” Whitnall and Millen-Playter (citation in Robinson, 2010, p. 401). With the pressure at an accident scene and with only instinct to go on, an evidence technician may not know just what is important for the reconstruction of the accident insist Baker and Fricke.
Sometimes, for whatever the reasons, the investigator does not have the time to take conventional measurements. Photogrammetry allows them, whenever necessary to go back and evaluate the photographs and measurements and notes that they have done. Importance in Criminal Investigations
It promotes greater efficiency. It is faster than both the coordinate and the total station survey methods, the law enforcement officer only needs his camera to help them gather all of the important information quickly and accurately, so that they can clear out faster and get traffic back to normal at accident scenes (Cooner & Balke, 2000)..
The method provides material for reference. A trained expert can go back and look at
References: Schenk, T. (2005). Introduction to Photogrammetry. Cooner, S.A., Balke, K. (2000) Use of Photogrammetry for Investigation of Traffic Incident Scenes. Robinson, E. M., (2010). Crime Scene Photography 2nd Ed. San Diego, California