Scanner
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1. The document discusses different types of scanners, including flatbed scanners, slide scanners, and handheld scanners. 2. Flatbed scanners work by placing an image face down on a glass pane, which is then scanned by a sensor and light source moving across the glass. Slide scanners illuminate slides and project the image onto a digital sensor. Handheld scanners are manually dragged across surfaces. 3. Scanners can scan images or documents and convert them to digital formats that can be inserted into documents, presentations, or emailed. Scanners can also scan directly to image or PDF file formats.
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Input / Output DevicesWe Learn - A Continuous Learning Forum from Welingkar's Distance Learning Program.
Secondary storage devices are required mainly because primary storage devices are volatile and information is lost the moment power is switched off. Floppy Disks and Drive, Hard Disks, CD/DVD drive, Pen drive and magnetic tapes are some of the secondary storage devices.
For more such innovative content on management studies, join WeSchool PGDM-DLP Program: http://bit.ly/ZEcPAcInput devices dani
The document discusses various input devices used for graphics workstations, including keyboards, mice, trackballs, spaceballs, joysticks, data gloves, digitizers, image scanners, touch panels, light pens, and voice systems. Image scanners work by placing an image on a glass plate and using a scanning unit with light sensors to convert the image to digital pixel data. Touch panels detect screen positions touched by the user using either optical, electrical, or acoustic methods. Light pens allow screen positions to be selected by detecting the light emitted from a CRT screen. Voice systems use speech recognition to accept voice commands by matching input to a predefined dictionary.
Scanners
This document summarizes scanners and their uses. It describes the main types of scanners as flatbed scanners, hand-held scanners, and optical mark readers. It explains that scanners allow direct data entry from source documents by translating paper into electronic format. Scanners are useful for preserving documents electronically, allowing manipulation of images. While scanners improve data accuracy over manual entry, they require high quality source documents.
Image processing.pptx
Digital images can be represented as matrices of pixels where each pixel has a numeric value corresponding to its brightness level. To create a digital image, an analog image is sampled spatially to capture pixel locations and quantized to assign brightness levels. More pixels and levels increase image quality but also storage needs. Key steps in digital image processing include acquisition, enhancement, restoration, compression and analysis operations like segmentation and recognition. Together these techniques allow powerful manipulation of visual information on computers.
3 d scanners by chethila
3D scanners generate 3D models of physical objects by capturing their surface geometry and texture. There are several common methods for 3D scanning, including laser triangulation, structured light scanning, photogrammetry, and laser pulse-based time-of-flight scanning. 3D scanners are used across industries like automotive and manufacturing to check part performance through 3D models, and in applications like industrial design, reverse engineering, and gaming. The cost of 3D scanners can range from around $100 for basic consumer scanners to over $800 for higher-end professional scanners.
Sixth sense techno_ppt
Sixth Sense is a wearable gestural interface developed by Pranav Mistry that augments the physical world with digital information. It comprises a camera, projector, mirror, and smartphone. The camera captures gestures and objects, sending the data to the smartphone for processing. The projector then reflects processed information onto surfaces using the mirror. Applications include making calls, getting maps, checking the time, and accessing information about objects by recognizing images or markers. Sixth Sense bridges the gap between physical and digital worlds by allowing natural hand gestures to interact with projected information.
Sixth sense technology(seminar presentation)
SixthSense is a wearable device that augments physical objects with digital information by projecting interfaces onto surfaces using a camera-projector system worn around the neck. It allows users to interact with these interfaces using natural hand gestures. The device consists of a camera, projector, mirror, and mobile computing device. It bridges the physical and digital worlds by accessing online information about objects and allowing gesture-based interaction without traditional interfaces. Some example uses include making calls, getting maps, checking the time, reading multimedia content, drawing, zooming, accessing product information, and more.
input devices By ZAK
Input devices transfer data into a computer system for processing. There are manual input devices like keyboards and mice that require user entry, and direct data entry devices like smart cards that can automatically transfer information. Scanners use charge-coupled devices to register light reflected from documents and build images pixel by pixel. Barcode readers use lasers or cameras to scan barcodes and convert the spacing patterns to identifying numbers or letters. 3D scanners use various technologies like lasers or structured light to capture dense point clouds or meshes representing physical object geometries.
Gis unit 3
The document discusses scanners and digitizers used for inputting raster and vector data in geographic information systems. Scanners convert paper maps and images into digital raster data by capturing features as pixels. Digitizers involve manually tracing features from paper maps or scanned images to convert them into vector data as points, lines, or polygons. The document describes the working of scanners, types of scanners including flatbed and sheet-fed scanners, and raster file formats like TIFF and JPEG. It also covers manual and heads-up digitizing, and the process of digitizing point, line, and polygon features and adding attribute information.
6th Sense: The Technology Ahead
This presentation is featuring Sixth Sense Technology with great powerpoint effects
For Details Contact: svaid23@gmail.com
GIS - Unit 3-1.pptx for geographical information systems
Scanners convert paper maps and images into digital formats by capturing individual pixels. Scanners work by using a sensor to detect light reflected off the document and assign values to pixels, forming a digital image. Common scanner types include flatbed, sheet-fed, and drum scanners. Scanning produces raster data files that store images as a grid of pixels. Common raster formats include TIFF, JPEG, and PNG. Vector data involves digitizing maps to extract geographic features as points, lines, and polygons with attributes. Digitizing is done manually using a digitizing tablet or heads-up on a computer screen.
6th sense device
Sixth Sense is a wearable gestural interface developed by Pranav Mistry that augments the physical world with digital information. It consists of a camera, projector, mirror, and mobile device coupled in a pendant. The camera captures hand gestures and images which are sent to the mobile device for processing. The projector then projects the digital information onto surfaces like the user's hand based on their gestures for applications like making calls, getting maps, photos, product info and more. Sixth Sense allows users to interact intuitively with digital info in the physical world through natural hand movements.
A computer vision based virtual mouse
The document summarizes a student project to develop a virtual mouse interface using computer vision and finger tracking. The project is divided into 5 modules: 1) basic video operations in OpenCV, 2) image processing techniques, 3) object tracking, 4) finger-tip detection, and 5) using detected finger motions to control mouse functions. Key functions demonstrated include moving the cursor, left and right clicking, dragging, brightness control, and scrolling. Evaluation of the system found finger tracking accuracy between 60-85% for different gestures. The project aims to provide an alternative input method that reduces hardware needs and workspace.
Touch-screens, printers, projectors and sensors
The document discusses various input and output devices for computers including touch screens, sensors, printers, and projectors. It provides details on the different types of each device such as touch screen technology, types of sensors like temperature and motion sensors, printer technologies like inkjet and laser printers, and projector types including DLP and LCD projectors. The document serves as an overview of these common computer hardware components.
The input and output device
The document discusses various input and output devices used in computers. It describes common input devices like the keyboard, mouse, joystick, scanners, microphones, and digital cameras. It explains how these devices work and their advantages and disadvantages. The document also covers various types of output devices including monitors, printers, plotters and speakers. It provides details on CRT and LCD monitors and different types of printers like impact, non-impact, inkjet and laser printers.
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GIS - Unit 3-1.pptx for geographical information systems
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Scanner
- 1. SCANNER TrầnThịMai 2. NguyễnThịHồngNgọc 3. Dương ThịThanhThúy 4. NguyễnThịAnhThư 5. VũThịTrâm
- 2. 1. WHAT IS A SCANNER? A device that optically scans images, printed text, handwriting, or an object converts it to a digital image.
- 11. Scanning difficult as this requires a steady hand, to avoid uneven scanning rate that would produce distorted images.
- 12. Have a "start" button held by the user during the scan, some switches to set the optical resolution, and a roller which generates a clock pulse for synchronization with the computer .
- 13. Operate by using 3 rotating lamps Each has a different coloured filter: red, green and blue Combined into one by appropriate software
- 17. Thanks for your attention