Ultra-Narrowband Multispectral Imaging

<p>This book provides insight into an unconventional modality of imaging where several spectral images are captured by a single snapshot under multi-laser illumination ensuring high-speed imaging within extremely narrow spectral bands. This method has three distinct advantages if compared to common commercial multispectral imaging systems - considerably improved spectral selectivity (or colour sensitivity) of imaging avoided motion artefacts in the spectral image sets and simpler/faster image processing as integrals over the spectral bands of imaging are replaced by numbers of the fixed working wavelengths.</p><p>The basic principles and progress in this field are reviewed focusing on applications for human skin diagnostics and printed forgery detection. The designs of ten different lab-developed prototypes that implement this method are described along with results of their laboratory clinical and/or forensic tests. This research leads to the development of new equipment and protocols for better skin diagnostics and the advanced detection of money document and artwork forgeries.</p><p>Chapter 1 explains the basics of spectral imaging including the main principles of multispectral and hyperspectral imaging. Chapter 2 introduces the snapshot multi-spectral-line imaging (SMSLI) method focusing on lasers as multi-wavelength illumination sources. Chapter 3 describes multi-laser illumination designs while Chapter 4 presents main specifications of the lab-assembled prototype devices implementing such designs. Results of the test measurements confirming applicability of the developed solutions for analysis/mapping of colour pigments in clinical diagnostics and forgery detection are discussed in Chapters 5 and 6 respectively.</p><p>This will be a valuable reference for laser and imaging professionals photonics researchers and engineers clinicians (dermatologists plastic surgeons oncologists) forensic experts and students of physics chemistry biology medicine and engineering.</p><p><b>Key Features:</b></p><p>· Reviews techniques and applications of narrowband spectral imaging using multi-laser illumination.</p><p>· Presents ten different prototypes for implementing the multi-spectral-line imaging method.</p><p>· Discusses applications of spectral line imaging for human skin diagnostics and forgery detection.</p>