What are bitmap graphics, where are they used, and how can they be identified?
A bitmap graphic, also called a raster graphic or simply a bitmap, is composed of a grid of dots. The color of each dot is stored as a binary number.
The grid divides the picture into cells, called pixels. Each pixel is assigned a color, which is stored as a binary number.
There are 6 main bitmap graphic types: BMP, JPG, PNG, TIF, RAW, GIF.
Where they are used:
BMP: graphical elements, such as buttons and controls used in computer programs
JPEG: Photographic or scanned images for desktop publishing Web page images , e - mail attachments
PNG: An alternative to GIF for web graphics , better than JPEG for storing images containing text.
TIF: High - resolution images of photon or line art for desktop publishing and printouts from photo printers
RAW: RAW images have to be comented into other formats before they can be edited or printed
GIF: Most commonly used for web page graphics, but not for digital photography
Howthey are identified:
BMP: Windows native bitmap graphics file format; not compressed; large files
JPEG: User - selectable compression; generation loss can reduce image quality; supported by most browsers
PNG: An open - source graphical format that compresses images without losing data; supported by most browsers
TIF: Versatile format that can be compressed ; supported by many digital cameras
RAW: Unprocessed data captured from a digital camera; very large files
GIF: Supported by most Web browsers; limited to 256 colors; lossy compression
What is a vector graphic ? How do vector graphics compare with bitmap graphics ?
Vector graphics is the use of polygons to represent images in computer graphics. Vector graphics are based on vectors, which lead through locations called control points or nodes. Each of these points has a definite position on the x- and y-axes of the work plane and determines the direction of the path; further, each path may be assigned various attributes, including such values as stroke color, shape, curve, thickness, and fill.
Unlike a bitmap graphic created by dividing an image into a grid of pixels, a vector graphic consists of a set of instructions for re-creating a picture. Instead of storing the color value for each pixel, a vector graphic file contains the instructions the computer needs to create the shape, size, position, and color for each object in an image.
What is compression ? What is the difference between lossless and lossycompression ?
Compression refers to any technique that recodes the data in an image file so that it contains fewer bits. Smaller files produced as a result of image compression require less storage space and can be transmitted more rapidly than the larger, original files.
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With lossless compression, all the data that was originally in the file stays the same after the file is uncompressed.
Lossy compression reduces a file by removing some information from it.
Image compression may be lossy or lossless. Lossless compression is preferred for archival purposes and often for medical imaging, technical drawings, clip art, or comics. Lossy compression methods, especially when used at low bit rates, introduce compression artifacts. Lossy methods are especially suitable for natural images such as photographs in applications where minor (sometimes imperceptible) loss of fidelity is acceptable to achieve a substantial reduction in bit rate. Lossy compression that produces negligible differences may be called visually lossless.
What is Smart Technology?
Smart Technologies Corporation is a publicly traded company headquartered in Calgary, Alberta, Canada. Founded in 1987, Smart Technologies is best known as the developer of the Smart Board interactive whiteboard. Smart products are sold through dealers across North America and through distributors in countries around the world.
The company supplies varieties of the Smart Board interactive whiteboard, Smart Board interactive flat-panel display and SMART Room System for Microsoft Lync / Skype for Business. In 2014 the SMART kapp digital capture board was released, and in 2015, the company introduced SMART kappiQ ultra HD display.
The company supplies software for use with its Smart Board and other hardware, including
Smart Notebook collaborative learning software, which allows users to compile images and other media into virtual notebooks.
Smart Notebook Math Tools is an add-on to Smart Notebook and includes virtual math tools, including a ruler, compass and a protractor
Smart Response interactive response system allows students to answer questions posed by questions using various devices, such as specialized hardware remotes, computers, and smartphone applications.
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Bridgit conferencing software is a data conferencing software that connects multiple parties across distances and allows users to share their desktop/laptop or interactive whiteboard screen with all participants. Smart Bridgit includes VoIP, webcam capability and digital ink.
Smart Meeting Pro software is a collaborative meeting software that connects two or more desktops/laptops or interactive whiteboards in the same meeting room, or across distances when using Bridgit.
Smart Vantage technology management software allows for centralized administration and management of Smart's hardware products.
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