Forensic Digital Image Processing: Optimization of Impression Evidence

Brian Dalrymple, Jill Smith

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商品描述

The digital revolution over the past several decades has advanced every facet of evidence detection, photography, optimization, and interpretation. Forensic scientists and practitioners have benefited tremendously from the move from film to digital. With proper procedures in place, digital images and casework capabilities have increased tremendously in both complexity and range due to a vast array of tools to enhance evidence and photography.

Forensic Digital Image Processing: Optimization of Impression Evidence provides the forensic investigator with the tools and understanding to extract, optimize and interpret the maximum evidence possible from crime scenes to increase identifications. The book begins by examining the emergence of forensic digital image processing, and the gradual improvement and acceptance of the science over the past four decades. Coverage includes looking at the issues of image integrity and authentication including forensic image optimization and the manipulation of images. Chapters explore techniques exploiting color theory, modes, and channels to optimize signal-to-noise ratio in images.

One of the greatest assets of digital image technology is the ability to combine multiple images of the same subject to create a final, blended image: one that displays the desired evidence and is especially useful for fingerprint or footwear impression. Later chapters demonstrate Image subtraction, focus stacking, and high dynamic range, utilizing images in optimum focus and with substrate interference diminished or removed entirely. The authors look at Fast Fourier Transform as an optimal tool for noise removal, addressing basic theory and diagnosis of the noise signatures. The book discusses the history of digital imaging techniques and their treatment within the court system.

Forensic Digital Image Processing: Optimization of Impression Evidence serves as an invaluable resource and tool for practicing professionals –as well as those new to the field―to look at best practices, the latest technology, and advances in utilizing the increasing array of tools of the trade.

商品描述(中文翻譯)

數位革命在過去幾十年中推動了證據檢測、攝影、優化和解釋的每一個方面。法醫科學家和從業人員從從膠片轉向數位技術中受益匪淺。在適當的程序下,數位影像和案件處理能力因為各種工具的廣泛應用而在複雜性和範圍上大幅提升,以增強證據和攝影。

《法醫數位影像處理:印證證據的優化》為法醫調查人員提供了從犯罪現場中提取、優化和解釋最大證據的工具和理解,以增加識別能力。本書首先探討了法醫數位影像處理的出現,以及在過去四十年中科學的逐步改進和接受。內容包括檢視影像完整性和驗證的問題,包括法醫影像優化和影像操縱。章節探討了利用色彩理論、模式和通道來優化影像信噪比的技術。

數位影像技術最大的優勢之一是能夠結合多個相同主題的影像,創建出最終的混合影像:顯示所需證據並對指紋或足印特別有用。後面的章節演示了影像減法、焦點堆疊和高動態範圍,利用最佳焦點和減少或完全消除基質干擾的影像。作者們將快速傅立葉變換作為噪聲去除的最佳工具,討論了噪聲特徵的基本理論和診斷。本書還討論了數位影像技術的歷史以及其在法庭系統中的應用。

《法醫數位影像處理:印證證據的優化》是一本對於從業專業人士以及新進人員來說都是寶貴的資源和工具,可以了解最佳實踐、最新技術和利用日益增多的工具的進展。