Download Forensic Uses of Digital Imaging, Second Edition by John C. Russ PDF

By John C. Russ

ISBN-10: 1498733085

ISBN-13: 9781498733083

The skill to paintings with, and retrieve pictures, is key to forensic and legal case paintings. in the course of a five-decade-long occupation, writer John C. Russ has taught tools for photograph processing and size to millions of scholars. Forensic makes use of of electronic Imaging, moment variation distills his school room and workshop fabric to provide the knowledge such a lot proper to forensic science.

Since the e-book of the 1st version, there were many major adjustments in expertise that experience revolutionized the methods electronic photos are utilized in forensic investigations. absolutely up to date, the second one edition:

  • Covers the common developments of electronic imaging images and processing
  • Discusses the elevated energy, garage means, and use of electronic cameras, computer pcs, pills, and cellphones in forensic science
  • Gives real-world examples to demonstrate comparisons among various processing options
  • Includes enormous quantities of full-color pictures that reveal applied sciences and techniques
  • Addresses problems with admissibility of forensic research effects less than Frye and Daubert rules
  • Provides directions and proposals for successfully proposing and explaining results

Forensic makes use of of electronic Imaging, moment Edition

explains suggestions with minimum jargon, and the tools and instruments defined during this publication could be applied in a large spectrum of obtainable machine courses. through demonstrating how those tools will be utilized to various pictures, this e-book is helping readers enhance the facility to appreciate whilst and the way particular thoughts will be used. it is going to be of specific use in casework for training images and imaging police and forensic execs who have to be sure and clarify either interpretations and approaches to lawyers, judges, and juries.

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Additional resources for Forensic Uses of Digital Imaging, Second Edition

Sample text

Comparison of dental records is a technique commonly used for identification of bodily remains after serious accidents. Most of this work is based on visual examination, possibly with some manual image enhancement. Jain and Chen (2004) and Said et al. (2006) use semiautomatic processing and segmentation to extract tooth outlines for measurement and automatic matching. Three-­dimensional imaging is routinely performed using computed X-­ray tomography (CT), magnetic resonance imaging (MRI), and other techniques.

41 Example of glitches (blocks of data that are not properly updated) in HDTV images. frame and working forward from there. In principle, one key frame at the beginning of each scene in a movie should be enough. In practice, key frames are inserted periodically. As mentioned previously, a typical high-­quality HDTV image displays 1920 × 1080 pixels at the rate of 60 images per second, for a total data rate exceeding 2 gigabits per second. The images use progressive scan (not interlaced), square pixels, and a wider image aspect ratio of 16:9 instead of the 4:3 used in NTSC video.

This text will use very few equations; if they are needed, many textbooks can supply them. It is more important here to understand the purpose of the equations. The important fact about conversion from RGB to YCbCr is that it separates the brightness information in the image from the color information (other methods for doing this are shown in Chapter 2). The separation of chrominance (color) and luminance (brightness) was originally done (and the conversion was performed with analog components) so that color could be added to existing black-­and-­white television broadcasts and ignored by the black-­and-­white TV sets common in most homes at the time (the late 1950s).

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