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सोमवार, 6 अप्रैल 2020

BCA 4th Sem Notes-Image Scanners

  • UNIT-I 
~The Advantages of Interactive Graphics
~Representative Uses of Computer Graphics 
~Classification of Application Development of Hardware and software for computer Graphics
~Overview, Scan:
~Converting Lines
~Scan Converting Circles
~Scan Converting Ellipses





  • UNIT-II 
  • ~Hardcopy Technologies
    ~Display Technologies
    ~Raster-Scan Display System
    ~Video Controller
    ~Random-Scan Display processor
    ~Input Devices for Operator Interaction
    ~Image Scanners
    ~Working exposure on graphics tools like Dream Weaver, 3D Effects etc
    ~Clipping
    ~Southland- Cohen Algorithm
    ~Cyrus-Beck Algorithm
    ~Midpoint Subdivision Algorithm


  • UNIT-III 
  • ~Geometrical Transformation
    ~2D Transformation
    ~Homogeneous Coordinates and Matrix Representation of 2DTransformations 
    ~composition of 2D Transformations
    ~The Window-to-Viewport
    Transformations


  • UNIT-V                           

  • ~Multimedia Definition
    ~CD-ROM and the multimedia highway
    ~Computer Animation
    (Design, types of animation, using different functions)


  • UNIT-VI  

  • ~Uses of Multimedia
    ~Introduction to making multimedia –
    ~The stage of Project
    ~hardware & software requirements to make good multimedia skills
    ~Training opportunities in Multimedia Motivation for Multimedia usage

    Image Scanners

    Image Scanner

    Voice Recognition is one of the freshest, most complex information strategies used to collaborate with the PC. The client inputs information by talking into a receiver. The most straightforward type of voice acknowledgment is a single word order verbally expressed by one individual. Each order is secluded with stops between the words. 

    Voice Recognition is utilized in certain illustrations workstations as info gadgets to acknowledge voice orders. The voice-framework info can be utilized to start illustrations tasks or to enter information. These frameworks work by coordinating a contribution against a predefined word reference of words and expressions

    Types of Image Scanner:

    1. Flat Bed Scanner: It resembles a photocopy machine. It has a glass top on its top. Glass top in further covered using a lid. The document to be scanned is kept on the glass plate. The light is passed underneath the side of a glass plate. The light is moved left to right. The scanning is done the line by line. The process is repeated until the complete line is scanned. Within 20-25 seconds a document of 4" * 6" can be scanned.

    2. Hand-Held Scanner: It has a number of LED's (Light Emitting Diodes) the LED's are arranged in the small case. It is called a Handheld Scanner because it can be kept in hand which performs scanning. For scanning the scanner is moved over the document from the top towards the bottom. Its light is on, while we move it on a document. It is dragged very slowly over a document. If the dragging of the scanner over the document is not proper, the conversion will not correct.


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