The First Practical Guide to the Use of Photoshop in Forensics Investigations
This timely book is the first to take the forensic use of digital imaging out of the classroom and into the real world for law enforcement, legal, and other forensics professionals. How do you show the exact position or size of a fluorescing blood stain in a crime scene? How do you analyze and enhance stills from security video? How do you explain your Photoshop efforts in court?
From metadata and sharpening methods to using the History log and accurately evaluating scale within a scene, this serious guide from one of the most highly sought trainers in imaging forensics outlines the processes you need for using Adobe(r) Photoshop(r) in a forensics environment. Whether you're working with the newest features of Photoshop CS3 or using an earlier version of the software, these clear, step-by-step tutorials will help you:
* Follow and apply legal rules of digital evidence and master best practices
*
Maintain an audit trail for non-standard enhancements to an image
*
Evaluate metadata to determine if an image is what it purports to be
*
Measure objects and scale in a photograph
*
Take advantage of non-destructive image enhancement techniques
*
Extract fingerprints from backgrounds using color isolation techniques
*
Take advantage of Adobe Camera Raw file formats in a forensic workflow
*
Correct bad exposures and color shifts in crime scene, evidence, and traffic collision photos
*
Perform frame averaging natively in Photoshop for image noise reduction
*
Get great prints for use in court by following good color-management policies
CD-ROM Included
The companion CD contains all the images used in each tutorial, allowing readers to practice along with the tutorials and compare their results, plus valuable scripts and links to many more resources.
Auflage
Sprache
Verlagsort
Verlagsgruppe
Zielgruppe
Illustrationen
Maße
Höhe: 23.3 cm
Breite: 18.7 cm
Dicke: 12 mm
Gewicht
ISBN-13
978-0-470-11454-4 (9780470114544)
Schweitzer Klassifikation
George Reis provides training and consulting services in photography, image analysis, and digital imaging through his company, Imaging Forensics. He worked for the Newport Beach Police Department for fifteen years as a forensic photographer, fingerprint examiner, and crime scene investigator and introduced that agency to digital imaging in 1992. With prior experience as a photojournalist, freelance photographer, and commercial photo lab processor, Reis is uniquely qualified to teach imaging forensics and is in great demand as both a trainer and an image-analysis expert witness.
Introduction.
Part I The Essentials.
Chapter 1 Best Practices.
Rules of Evidence.
Case Law.
Four Aspects of Best Practices.
Chapter 2 Reports and Testimony.
Report Writing.
Court Testimony.
Chapter 3 Basic Imaging Settings.
Monitor Calibration.
Photoshop's Color Settings.
Photoshop Preferences.
Personalizing Workspaces
Summary
Chapter 4 Navigating with Bridge.
What Is Bridge?
Downloading and Archiving Digital Images.
Customizing Bridge.
Keywords.
Opening Files in Bridge.
Chapter 5 Camera Raw.
What Is a Raw File?
Adobe Photoshop Camera Raw.
Making Image Adjustments in ACR.
JPEG and TIFF Images in ACR.
Chapter 6 Viewing Metadata.
What Metadata Is.
Entering Metadata.
Metadata in Bridge.
Using Metadata.
Summary.
Part II The Digital Darkroom.
Chapter 7 Basic Image Adjustments.
Global Adjustments with Levels.
Using Layer Masks for Local Adjustments.
Adjustments with the Shadow/Highlight Feature.
Chapter 8 Printing Images.
Print Overview.
Image Size.
The Print Dialog.
The Print Driver.
Chapter 9 Automating Photoshop through Actions.
Introduction to Actions.
Action Setup.
Creating and Running Actions.
Running Actions.
Saving Actions.
Chapter 10 Contact Sheets.
Using Contact Sheets.
Using Photoshop's Contact Sheet Feature.
Using the CSX Contact Sheet Script.
Chapter 11 PDF Presentations.
Creating Presentations.
Opening and Viewing PDF Presentations.
Chapter 12 Preparing Court Exhibits.
Using Court Exhibits.
Creating Court.
Chapter 13 Photomerge.
Adjacent or Panoramic Photographs.
Photographing the Scene.
Merging the Images.
Part III Image Analysis and Enhancement.
Chapter 14 Compositing Images.
When to Composite Images.
Photographing the Scene.
Combining the Images.
Chapter 15 Precise Image Sizing.
Viewing Images at the Proper Magnification.
Getting the Greatest Precision.
Chapter 16 Measuring Objects.
The Importance of Measurements.
Annotating Images.
Measuring Objects.
Chapter 17 Distortion Correction.
The Limits of Distortion Correction.
Correcting Wide-Angle Distortion.
Saving and Reusing Distortion-Correction Settings.
Correcting Perspective Distortion.
Summary.
Chapter 18 Noise Reduction.
Noise Reduction Methods.
Reduce Noise Filter.
Median Filter.
Summary.
Chapter 19 Deblurring and Sharpening.
A Variety of Sharpening Tools.
Unsharp Mask.
Smart Sharpen.
Interactive Deblur Using Ocean Systems ClearID.
Summary.
Chapter 20 Contrast Enhancement.
Global Adjustments.
Using Layer Masks for Local Adjustments.
Chapter 21 Color Isolation.
Separating Color Channels.
Channel Mixer.
Summary.
Chapter 22 Pattern Removal.
Using the ClearID Pattern Remover.
Using the ImageJ FFT Filter.
Chapter 23 Forensic Video Analysis.
Demultiplexing in Bridge.
Deinterlacing Video.
Field Alignment.
Field Level Advance in Photoshop.
Frame Averaging.
Pixel Aspect Ratio Correction.
Chapter 24 Additional Features.
Match Zoom And Location.
Web Photo Gallery.
Merge To HDR.
Scripts.
Tool Presets.
Tonal Inversion.
Layer Blend Modes.
Index.
