Glossary Archives - Page 6 of 16 - book❷net book scanners

Multispectral imaging

Posted on 30. June 202228. September 2022 by Karin

Multispectral imaging is one of the imaging techniques that make it possible to take images of objects in the range of selected, very narrow wavelength ranges of the reflected light in order to obtain information about objects that cannot be perceived by the human eye. It can be used to detect and visualize materials and structures that are invisible to the human eye.

Many scientific fields, such as forensics, geology, meteorology and art technology, use multispectral imaging to document and analyze important data about nature as well as man-made objects.

When multispectral imaging is performed, images are usually first taken in the visual spectrum, which means that an object is imaged as it is seen by the naked eye. Then, specific images are taken in different wavelength ranges (e.g., ultraviolet, infrared, and near-infrared) where specific content becomes visible. Such imaging can also be done in combination: i.e., one constructs a composite image that combines the input of multiple spectra, a so-called false-color image. In this case, data from spectra outside the visible range are represented either with an artificial color such as red or blue, or in grayscale. Composite images can show high-energy regions and other interesting things.

In art technology, multispectral imaging is used especially in painting and graphics analysis to reveal image supports, overpaintings (pentimenti), underdrawings, or watermarks, among other things.

Book2net has developed a novel, filterless method that is particularly suitable for the multispectral analysis of graphics, hand drawings and written material.

The book2net multispectral system works without changing filters (i.e. vibration-free) and without post-correction of sharpness and focus in the spectral ranges (i.e. pixel-scale accurate).

Single or series of scans can be performed in definable nm intervals. The scan results can be superimposed and analyzed with pixel accuracy.

For further information see: https://book2net.net/en/multispectral-imaging/

Scanning time

Posted on 30. June 202223. August 2023 by Karin

Scanning time basically refers to the speed at which a scanner performs a scan. It should be noted that, in contrast to the process time, which covers the entire cycle including image processing and data storage, the scanning speed only includes the pure capturing time.

In order to achieve comparability between different scanning systems, it is therefore essential that the scanning speed is always specified in relation to the format and resolution, e.g. 400 dpi for A2 color.z.B. 400 dpi bei A2 Color.

V-shape scanner

Posted on 28. June 202224. August 2023 by Karin

V-shape scanners are special book scanners whose book cradle can be adjusted to an opening angle smaller than 180° to a V-shaped support form to ensure the gentle capturing for particularly valuable or sensitive bound books and documents that can only be digitized at a small opening angle.

book2net offers a wide range of V-scanners − from mobile tabletop devices to high-performance scanners with semi-robotics.

Benefit from our book scanners with the latest CMOS sensor technology, as they combine highest quality with high performance, versatility and ease of use.

With our V-shape scanners you can scan books in various formats from A1 to A6, from large format to miniature books; always conforming to Metamorfoze, FADGI and ISO/TS 19264-1:2017 standards.

Our V-shape scanners are specifically designed for the gentlest handling of delicate, valuable and rare books, especially illuminated manuscripts and incunabula. Therefore, they provide special components to make digitization as gentle as possible:

Innovative CMOS sensor technology for high-quality, high-speed imaging
V-shaped, conservation book cradle with spine release and special coating as desired
V-shaped, easy-to-operate and lockable glass plate (for systems with semi-robotics with precision-guided linear drive)
Our semi-robotic systems (such as book2net Cobra and Dragon) feature freely selectable fully automatic, semi-automatic or manual book rocker and glass needle pressure operation options.
Smooth and adaptable LED lighting system to prevent damage from high light intensity
User-friendly software with modules for live preview and programmable scan processes ensure a smooth workflow

Get more information about our systems book2net Cobra, book2net Dragon, book2net Lizard and book2net Falcon.

Semi-robotics

Posted on 28. June 20226. March 2024 by Karin

Die book2net Scanner Cobra, Flash, Mosquito, Hornet und Dragon sind als Spezial- und Produktionsscanner für die Massendigitalisierung großformatiger sowie unhandlicher und schwerer Vorlagen konzipiert.

Um dabei eine schonenden, effizienten und zugleich anwenderfreundlichen Ablauf zu garantieren, sind diese Systeme mit einer Scanautomatik zur komfortablen und variablen Steuerung von Buchwippe/Vorlagentisch und Glasandruck ausgestattet.

Industrielle Standards und Komponenten wie Präzisionsführung, Linearantrieb und SPS-Steuerung garantieren eine leichtgängige und gleichmäßige Führung und Einstellung aller beweglichen Elemente.

So können die Systeme gezielt an die Ablaufprozesse der jeweiligen Projektanforderungen angepasst werden. Die Scan-Ablaufprozesse können dabei individuell programmiert werden. Wahlweise stehen dafür unterschiedliche Programme zur vollautomatischen, halbautomatischen oder rein manuellen Bedienung zur Verfügung. Die Verfahrwege können dabei entsprechend des Vorlagenformates optimiert werden.

Variable Steuerung:

vollautomatisch
semi-automatisch
manuell
zeitgesteuert
aktionsgesteuert
Benutzer gesteuert

Opening angle

Posted on 28. June 20226. March 2024 by Karin

Einstellbare Öffnungswinkel bei Buchwippe und Glasandruck sind Grundvoraussetzungen bei der professionellen Digitalisierung.

Konservatorische Digitalisierung

Die Digitalisierung von kostbaren oder empfindlichen Büchern und gebundenen Dokumenten, die aus konservatorischen Gründen nur mit einem geringen Öffnungswinkel digitalisiert werden dürfen, erfordert eine Reduzierung des Öffnungswinkels auf kleiner als 180°. Dafür haben wir bei book2net spezielle V-Scanner unterschiedlichster Größe entwickelt.

High-Performance Digitalisierung

Zur Gewährleistung eines reibungslosen Workflows ist es insbesondere im Bereich der Massendigitalisierung wichtig, die Scan- und Prozesszeiten möglichst gering zu halten und dem Anwender dabei ein Höchstmaß an Bedienkomfort zu bieten. Die Professionellen Systeme von book2net verfügen daher über eine automatische Höhenverstellung und Andruckkontrolle, die es erlaubt, die Verfahrwege der Buchwippe bzw. des Glasandruckes individuell an die Vorlagen anzupassen.

Book2net bietet eine Vielfalt an Buchscannern mit reduziertem einstellbaren Öffnungswinkel der Buchwippe und Glasplatte an, wie z.B. unsere Modelle Cobra A1/A2, Falcon, Lizard und Dragon.

Height compensation

Posted on 28. June 202222. August 2023 by Karin

Book cradle

In order to ensure a true-to-scale, distortion-free high-quality scanning of bound originals, a flat surface of the original is necessary. Professional systems therefore have adjustable or self-adjusting book cradles that automatically compensate for the difference in height between the halves of the original during page turning.

Book2net systems therefore offer book cradles with self-adjusting technology or individually controllable support plates, depending on the requirements.

Glass plate

In order to scan books of different thicknesses gently and efficiently, even with glass plates, professional systems have a height adjustment system for the glass plate that allows the pressure and travel paths to be set precisely to the book thickness.

This is used in particular with semi-robotic high-performance scanners such as the book2net Cobra, Flash, Mosquito, Hornet and Dragon.

Glass plate

Posted on 28. June 202228. June 2022 by Karin

In order to ensure a true-to-scale, distortion-free high-quality image when digitizing bound originals, one of the requirements is that the surface of the original must be absolutely flat. For this reason, many professional scanning systems work with additional glass or Makrolon© plate pressure systems.^©.

In addition, to guarantee that books of different thicknesses and states of preservation can also be scanned gently and efficiently using glass plates, professional systems operate with advanced adjustment systems for the glass plate allowing the pressure and travel paths to be set precisely and individually as required.

This is used in particular with high-performance scanners with semi-robotics such as the book2net Cobra, Flash, Mosquito, Hornet and Dragon.

Professional book scanners also offer special non-reflective glass with UV protection (museum glass) to minimize light exposure, especially for valuable originals such as incunabula and manuscripts.

Interlock

Posted on 28. June 202217. April 2024 by Karin

Book cradle

Mechanical book cradles that are designed for a support angle of up to 180° usually also have a so-called book cradle lock. This works like a brake that prevents the book cradle from making compensating movements during the scan and thus prevents blurring. In addition, there is often also the option of locking the book cradle as a whole by hand or foot switch and using it only as a flat support table.

Glass plate

Professional scanning systems that work with glass printing also have the option of locking the open glass plate to enable scanning without glass printing for particularly sensitive originals.

Electromagnetic spectrum

Posted on 20. June 202210. October 2022 by Karin

The electromagnetic spectrum describes the detectable and measurable wavelengths (lambda in m) and frequencies (in Hz) that occur in nature and classifies radiation according to wavelength into types of radiation ranging from gamma radiation to low frequency.

The division into different ranges of electromagnetic radiation serves to visualize, describe and compare their different properties and effects on our environment. One possible type of radiation is visible light, which can be divided into the color spectrum. However, this part, which is visible to the human eye, is only a small part that occurs in nature. The wavelength of visible light is about the size of a cell (1nm = 10-9m = 0.000 000 001m).

On the common scale of the electromagnetic spectrum, on the left is the range of long-wave UV radiation (10-10m), which contains higher energies. We know this range of the electromagnetic spectrum mainly from solar radiation. An even higher energy than UV radiation is contained in X-rays and gamma radiation, which are used in medicine for X-ray images and radiation therapy for cancer.

In the middle range of the electromagnetic spectrum is the only range visible to the human eye. This acts as the light spectrum.

Among the more curvilinear radiations with low energy, which are located on the scale to the right of the visible range, is infrared radiation. It is also called thermal radiation, because every object and living being mainly emits this radiation. The wavelength here is about the size of a nail tip (10-5m). Infrared radiation is followed by microwave radiation, radio waves and low frequency radiation.

Color spectrum

Posted on 20. June 202211. October 2022 by Karin

Color spectrum = Light spectrum: Wavelength range of the electromagnetic spectrum that can be perceived by the human eye.

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