Forensic Digital Imaging and Photography

Forensic Digital Imaging and Photography covers each facet of digital imaging-how to select equipment, when to use it, how to produce a good image, and how to present that image in court. It clarifies the difference between what can be done digitally and what should be done in a forensic setting, and helps the reader "learn by doing" with exercises and step-by-step instructions.

Key Features:



Teaches the basics of digital imaging and how to choose the right tool for each job
Describes how to master specific tasks such as scanning, selecting media for archiving, configuring a digital imaging system, setting the proper resolution, adjusting the image, comparing images with known samples, and much more
Includes detailed graphics of the photography and imaging tools, and dialog boxes to describe each function
Provides easy-to-follow instructions for each exercise in the book, including required images
Describes potential pitfalls of using digital technology

Law enforcement officials who follow the recommendations in this text can feel confident that their handling of imaging evidence will stand up to the high standards necessary for presentation in criminal cases. Topics covered in the book:The opening chapters teach the basics of digital imaging and how to choose the right tool for each job. The remaining chapters show how to:



Scan original negatives and slides with a film scanner
Scan photographs, line drawings, and documents with a flatbed scanner
Select the best equipment for the job
Select the best media for archiving
Configure and use a digital imaging system
And more

Exercises provide step-by-step instructions on how to:



Size and set the resolution of an image
Adjust highlights, shadows, contrast, color, density, etc.
Record each action performed on the images
Separate images into color channels
Graphically compare wounds with weapons and compare handwriting exemplars with questioned samples, etc.
Remove backgrounds from fingerprints using FFT filters
Use a sizing tool to adjust images for direct comparison
Use frequency filters to enhance hidden facial features