Batch - HYD10 / 1516

Learning Group - HIS 44

Team - 9Neha Kumari Pandey - 974568Kirti Ranjan Patra - 975402Jyotirmay Saha - 986111 (Team Lead)Riti Choubey - 986647Amit Kumar Singh - 986715

SCANNER

Introduction to ScannersA scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display.A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display.

Utility of ScannersScanning photographs for printing, for web pages, for Windows wallpaper, for emailing images to friends and relatives, images for newsletters or genealogical notebooks, for PowerPoint slides shown at meetings etc.Scan real items - coins, cloth, autumn leaves, the cat, whatever. Scanning fabric or wood boards can make some great textures, used maybe for your web page background etc.Send a fax to multiple fax destinations at the same time.Scan documents and send them to another printer.

Types of Scanners A scanner that provides a flat, glass surface to hold pages of paper, books and other objects for scanning.

The scan head is moved under the glass across the page.

Sheet feeders are usually optionally available that allow multiple sheets to be fed automatically.

Flat-bed Scanners

Sheet-fed Scanners

It is a digital imaging system specifically designed for scanning loose sheets of paper, widely used by businesses to scan office documents and less frequently used by archives and libraries to scan books that have been disbound .

A sheet-fed scanner also referred to as an automatic document scanner or ADF scanner.

Hand-held Scanners

A scanner is moved by hand over the material being captured.Handheld scanners are smaller, portable versions of their desktop cousins.Handheld scanners are small and less expensive than their desktop counterparts but partially rely on the user's dexterity to move the unit across the paper.

Drum Scanners

Used by the publishing industry.

A type of scanner used to capture the highest resolution from an image.Photographs and transparencies are taped, clamped or fitted into a clear cylinder (drum) that is spun at speeds exceeding 1,000 RPM during the scanning operation.

How Scanners workA scanner is a device that uses a light source to electronically convert an image into binary data (0s and 1s). This binary data can then be used to store the scanned image on a computer.A scanner recreates an image by using small electronic components referred to as the scanner's 'eyes‘. The type of 'eyes‘ used in today's scanners are CHARGE COUPLED-DEVICES(CCD) and PHOTOMULTIPLIER TUBES(PMT). These electronic eyes measure the amount of light reflected from individual points on the page and translate it to digital signals that correspond to the brightness of each point.To create a file on the computer that represents a color image, the scanner divides the image into a grid with many individual points called PIXELS. A scanning head, termed a row of 'eyes', reads over the grid and assigns a number to each pixel based on the main color in that pixel, using green, blue and red. For example an aqua pixel would be saved as a number to represent the proportion of blue, green and red which represents the color aqua.

Scanner specifications and functionalitiesResolutionBit DepthDynamic RangeSoftwareResolution is a measure of how many pixels a scanner can sample in a given image. Scanners have two types of resolutions:

• Optical resolution is a measure of how many pixels a scanner can actually read. (reolution of 300 x 300 dots per inch dpi).• Interpolated resolution measures the number of pixels a scanner is able to predict. A scanner can turn a 300 x 300 dpi scan into a 600 x 600 dpi scan by looking in-between scanned pixels and guessing what that spot would have looked like if it had been scanned. This prediction is then used to insert new pixels in between the actual ones scanned. This technique is less precise than optical resolution; however it assists in improving the enlargement of scanned images.

Resolution

• Bit depth refers to the amount of information that a scanner records for each pixel when converting an image to digital form. The simplest kinds of scanners only record data related to black and white details and have a bit depth of 1. The minimum bit depth required for scanning photographs and documents is 24-bits, while slides, negatives or transparencies need a scanner with at least 30-bits.• Thus for a scanner to produce a high quality scan with colour, a higher bit depth is required. In general, current scanners have a bit depth of 24, which means that 8 bits of information can be collected for the three primary colors used in scanning; blue, red and green. This high resolution allows scanners to produce images close to photographic quality.

Bit Depth

Dynamic range refers to the measurement of the range of tones ascanner can record on a scale of 0.0 to 4.0, with 0.0 being perfectwhite and 4.0 being perfect black.•Color flat-bed scanners usually have a dynamic range of 2.4. A range of this measurement is unable to provide high quality colour scans.•A dynamic range of 2.8 and 3.2 is suited to professional purposes and can be found in high-end scanners. An even higher dynamic range of 3.0 to 3.8 can be provided by drum scanners.

Dynamic Range

• A scanner, like any type of hardware, requires software. Typically the two most common pieces of software provided with scanners include optical character recognition (OCR) and image editing software.• Optical character recognition software translates the information recorded in a scan, tiny dots, into a text file which can be edited.• Image editing software allows the tones and colours of an image to be manipulated for better printing and display. Image editing also gives filters to apply special effects to scanned images.

Software

How to take care of Scanners ?Downtime of Illuminating

Lamp

Maintaining latest driversUse proper and recommended connectors only.Check for their wear and tear.

Check the connectionsSwitch off the scanner after use.

Always keep your divers up-to-date with the latest patches and bug fixes.

Routine Maintenance

Keeping it cleanRelocate the equipmental parts carefully.

Safe Logistics

Clean the scanner’s case and scanning plate regularly.

Necessary because of too many movable parts.

DependenciesAlmost all security policies and measures depend solely on scanners.

DependenciesThe medical sector also depends on various kinds of scanners.The most common example is the X-Ray Scanner.

DependenciesPrivate and public sectors, schools, colleges, offices, all depend on scanners for scanning their documents.

DependenciesAuthentication of people also depends on scanners that prevents unauthorized access.

Market UpdatesCanon

Xerox

Epson

HP

Fujitsu

Top Brands

Canon imageRUNNER 1700Canon has launched four new document scanners, and four new high-speed A4 copier-based MFDs (multi-function devices), meant for the SOHO and SME segments, with their low cost per page, space conserving form-factors, and managed document solutions (MDS).Models of the Canon imageRUNNER 1700 series include the imageRUNNER 1730, 1730i, 1740i, and 1750i.Features:• Both simplex and duplex printing• Contact Image Sensor as their scanning element• RGB LED as the light source• Support scanning resolutions from 150x150 dpi to 600x600 dpi

Canon imageRUNNER 1730i

Epson Perfection V550Epson has recently launched the Epson Perfection V550 Photo Scanner for high quality scanning with high end features which has a maximum scan area of 8.5 by 11.7 inches.

Features:• a maximum optical resolution of 6,400 dpi• the V550 includes Digital ICE—the hardware-based approach for digitally removing dust and scratches• The scanner's LED-based light eliminates warm-up time• directly post scans to Facebook and popular cloud services is a nice added convenience to keep up with the times

Epson Perfection V550

HP Digital Sender Flow 8500

HP Digital Sender Flow 8500Features:• Advanced image enhancement features such as blank page removal, color dropout, auto-orient, auto-crop, auto-deskew, and auto-threshold• HP EveryPage technology including ultrasonic multi-feed detection• Switchable black/white background

Future of ScannersRelatively new area of sensor technology.

Replaces the cumbersome optical reduction technique with a single row of sensors.Thinner, lighter, more energy efficient and cheaper to manufacture than a traditional CCD base device.

Contact Image Sensor ( CIS )

Image quality and colour, and to address the problem of a limited 300 or 600 dpi.

16 BIT WORKFLOW - Workflow permits RAW to be re-purposed for as many different uses as required without the need to re-scan.No RAW format scanners available.

SOOM ( Scan Once , Output Many )

Third party software VueScan.Actually saves as TIFF file that is saved with minimal changes from the raw scanner data.

•Vein-points scanned using near-infrared lights.•Blood needs to be flowing through those veins.•0.0008 percent false positive and a 0.01 percent false rejection rate.•Lifebook E741/C and Celsius H730.

Fujitsu’s Plam-Vein Scanner

1. Dip object in the milk.2. Capturing the silhouette of an object at different stages of submersion.

Fluid Scanner by Friedrich Kirschner

4. By measuring up the milk in each shot, you get a semi-accurate outline of the object.

Shoots near-infrared light into the eyeball and determines the intricate structures of the iris from the light that returns.

Aviation Security World Conference in Amsterdam, including hi-tech colour-coded scanning corridors.

Samsung Iris Scanning Technology

Aviation Security World Conference

Thank you.