What you can't see can hurt your case...
Computer-Aided Facial Detail Comparison
Cranial Relative Comparative Measurement (CRCM)
What is CRCM?
     CRCM is a process that converts facial features into percentage based mathematical formulas. The importance of relative, percentage based analysis is that it allows comparison of images that are pictured in different positions or in different sizes. CRCM can detect similarities or differences in photographs of persons with great precision even if the photograph are from different origins and different sizes.
History, background and application
     In June 2008 EnVision Digital was asked to enhance surveillance camera recording evidence in a second degree murder case. Earlier efforts to use the available surveillance videos as defense evidence were hampered by the poor quality of the recordings. EnVision was able to dramatically enhance the videos but more specific results were needed to prove the innocence of the accused..
     Thomas R. "Tom" Sandor, the principal and technical director of EnVision Digital researched the relative percentage based comparative measurement methods used by British Intelligence during WWII in analyzing aerial reconnaissance photographs. Tom Sandor replaced the old, WWII era measuring-stick and slide-rule methods with 21st century computer technology, sophisticated image processing and custom designed spreadsheet modeling. After performing a CRCM analysis using hard-tissue anatomical landmarks and documenting the results, within a few days the prosecutor dropped all charges against the accused and he was released from jail. The case and the CRCM process received wide ranging news coverage in newspapers. Since then the CRCM process was used in several criminal defense cases with similar successes. In every case when the CRCM evidence proved facial detail dissimilarities the case was dismissed prior to trial.
     While CRCM was developed specifically for facial detail comparison, it was also used to compare dimensional aspects of other items as well. This included comparative dimensional analysis of items involved in crimes, the size and location of damages in automobile collision insurance claims, the height of persons compared to items in a picture and ducomenting the dimensions of bodily injuries.

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