computer science

SilverFast

SilverFast is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand SilverFast rather than just read about it. In short: SilverFast is a family of software for image scanning and processing, including photos, documents and slides, developed by LaserSoft Imaging. There are also other applications for image processing using digital cameras or printers, and for 48-bit raw data image processing.

Key takeaways

SilverFast belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SilverFast to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SilverFast from memory before moving on to harder problems.

Reference excerpt

SilverFast is a family of software for image scanning and processing, including photos, documents and slides, developed by LaserSoft Imaging. There are also other applications for image processing using digital cameras or printers, and for 48-bit raw data image processing.

History SilverFast was introduced in 1995 and is still under development today. Some scanner manufacturers bundle their hardware with SilverFast software. Some of the features developed for SilverFast, especially in the area of color management, error detection and automatic dust and scratch removal, have been patented. The European Digital Press Association named SilverFast the "Best colour management software of the year 2008" for improving the dynamic range of most scanners and for creating ICC profiles automatically. In 2011, version 8 was introduced, and HDR imaging software followed in 2012. SilverFast 9 was released in 2020.

Patents 2005: Patent granted on barcode technology used for the Auto IT8 Calibration. (Karl-Heinz Zahorsky, EP 1594301, expired) 2008: Patent granted on technology used for SilverFast Multi-Exposure@. (Karl-Heinz Zahorsky, EP 1744278, US 8,693,808) 2023: Patent granted on the ExpressScan, a scanning method that reduces scanning time for flatbed scanners. (Karl-Heinz Zahorsky, EP 4109866, US 11,558,529 B2)

Products SilverFast is supplied configured for the specified scanner model. If several scanners are operated, it is therefore necessary to purchase a corresponding number of additional licenses. Upgrade rates are also offered when purchasing a new scanner. Overview of the available products:

1) including: Multi-Exposure 2) optional: ICC Printer Calibration

Optional features As marked in the table above, some products are available with additional features: Multi-Exposure – an exposure blending technique for scanning transparent originals like slides, negatives, and film strips with increased dynamic range. This is accomplished by scanning the original multiple times with different exposure times, increasing the dynamic range and preserving detail in the light and shadow areas of the image. Multi-Exposure does not work with reflective originals and differs from "Multi-Sampling," which also scans multiple times but with unaltered exposure. ICC Printer Calibration – calibrates the printer using a previously calibrated flatbed scanner as the measuring device for profiling the printer.

SilverFast scanner software It can be used as a stand-alone application, as a Photoshop plug-in, or as a universal TWAIN module. Versions include:

SilverFast SE (basic edition) SilverFast SE Plus (plus edition / with Multi-Exposure) SilverFast Ai Studio (premium edition) SilverFast X-Ray (a special version of SilverFast designed to digitize radiographic films for scientific and medical radiography)

SilverFast HDR software SilverFast HDR processes 48-bit raw images. Many newer scanners are able to output the image directly with all available data instead of reducing it to 24-bit; this 48-bit raw image can be saved immediately and digital processing performed later.

SilverFast HDR (basic edition) SilverFast HDR Studio (premium edition) SilverFast HDR contains the functionality of SilverFast Ai Studio for 48-bit raw data, such as defining output size and resolution, auto-adjusting of highlights and shadows, three-part histogram, gradation curves, selective color correction, unsharp masking, color cast removal slider, color separation, and CMYK-preview. SilverFast HDR can be used as a native plug-in for Adobe Photoshop, as a universal TWAIN module, or as a stand-alone application. HDR Studio has AACO (Auto-Adaptive Contrast Optimization), JPEG 2000, USMPlus (Unsharp Mask Plus), CloneTool and PrinTao.

HDRi (64Bit RAW data with infrared channel) With version 6.6.1 any SilverFast HDR version supports the proprietary RAW data format HDRi. These 64-bit HDRi color files and 32-bit HDRi greyscale files contain additional 16-bit infrared RAW data besides the 48-bit color RAW data and 16-bit greyscale RAW data respectively. Therefore, a scanner with an infrared channel available to the software is necessary. This RAW format can keep any readable image information for later post-processing. The acronym "HDR" as used by SilverFast is not related to High-dynamic-range imaging, a widely used technique to increase the dynamic range of (digital) images. The data format is:

SilverFast archiving software The SilverFast Archive Suite includes SilverFast Ai Studio and SilverFast HDR Studio with an integrated color management system. This package is suitable for archiving slides, negatives, and photos, whereas the post-processing can take place any time after scanning.

SilverFast Archive Suite – consisting of SilverFast Ai Studio and SilverFast HDR Studio (premium edition)

PrintTao 8 PrintTao 8 is a discontinued software product for Canon and Epson large format printers. It could be used as a stand-alone application or as a plug-in for Adobe Photoshop and Adobe Lightroom. PrinTao 8 handled color management and all printer driver settings. It contained various printing templates such as pack templates for portrait photographers, or gallery wrap templates for printing on canvas.

SRDx Photoshop plug-in SRDx (Smart Removal of Defects) is a plug-in for Adobe Photoshop to remove defects like dust particles, specks, small scratches and finger prints from digital images. Most dust and scratch removal tools use blur effects which degrade overall image quality. SRDx works without any unsharpening effects. It uses an adjustable automatic detection of dust and scratches that can be fine-tuned manually using a defect marker and a rubber tool.

SilverFast DC SilverFast DC is a discontinued stand-alone software for digital camera image processing. It contained features for reading the image data from the camera, for processing, optimizing, and archiving the images on the computer, as well as for printing the edited images.

IT8 calibration and color management

Scanner calibration: SilverFast is equipped with a color management system that enables largely automated IT8 color calibration of the scanner using IT8 targets supplied by the manufacturer, LaserSoft Imaging.

… excerpt ends here. Continue reading the full article.

Illustrations

SilverFast: IT8.7/1 target by LaserSoft Imaging — IT8.7/1 target by LaserSoft Imaging

Worked examples

Example 1 — a first encounter with SilverFast

Start with the simplest possible case. Write down what SilverFast claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to SilverFast before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about SilverFast ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of SilverFast

In research: SilverFast appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses SilverFast in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: SilverFast is common in secondary-school and first-year university syllabi. It links to neighbouring topics High dynamic range file formats, Image scanning, MacOS graphics-related software, so understanding it makes those chapters shorter.
In everyday life: Look for SilverFast outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study SilverFast in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SilverFast means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain SilverFast out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SilverFast in simple terms?

Why does SilverFast matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study SilverFast?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on SilverFast.