Multimedia part 1 Flashcards
Computer Graphics ?
It’s representation of image data by a computer specifically with help from specialized
such as : Hardware: Graphics Cards and Cameras
Software: Adobe Photoshop and Unity
Graphics Terminology ?
Pixels ( smallest element in an image)
( square shape)
Image Dimensions ( Is measured by the Width x Height of a digital image )
What are the types of graphics ?
Bitmap Graphics ( Raster graphics)
Vector Graphics ( object oriented graphics)
Painting pixels on the screen with a pointing device like mouse capturing an image with a digital camera is ? ( painting software’s)
Bitmap Graphics ( Raster graphics)
Pointer movements translated into lines and patterns on screen using mathematical formulas ?
Vector Graphics (Object Oriented Graphics)
Color depth / bit depth ?
Is the number of bits devoted to each pixel
Each pixel represented by 1 bit ( black or white) ? 1 or 0
Simple bit mapped (monochrome)
How to calculate the file size of a simple bitmap image with dimensions 250x 200 ?
Total Number of pixels in the image = 250 * 200 = 50,000 pixels
File size = 50,000 pixels * 1 bit/pixel = 50,000 bits
[1 byte = 8 bits]
Gray- scale graphics ?
Uses 8 bits per pixel ( ex allows up to 256 different shades )
How to calculate the file size of a gray scale image with dimensions 250 x 200 ?
Total Number of pixels in the image = 250 * 200 = 50,000 pixels
File size = 50,000 pixels * 8 bit/pixel = 400,000 bits ~ 50,000 bytes
Color depth ?
Modern PCs uses 24-bit (True Color) to display millions of colors at a time , photorealistic color such as RGB: (Red, Green, Blue)
Is a measurement of the pixel density of an image measured in ( inch ppi) ?
Resolution
What is object oriented Graphics / ( vector Graphics) ?
Are scalable graphics that are built using mathematical formulas
What is advantage of vector graphics ?
That they can be resized without losing image quality like : Drawing software’s ( Inkscape)
Differences between Bitmap and vector ?
Bitmap ( stores as dots )
More memory / Good for paintings
Texture and shading
Vector ( stores as objects)
Less memory / Lines cleaner
Good for graphs , charts ( 3D)
Image processing ?
Filtering and cleaning : ( Eliminate red eye)
Enhancing and editing :
Can distort and merge photos as in tabloids
Can create fabricated images (which looks real)
What are examples of image processing ?
Medical field help doctors clean x ray images
What is natural language processing ?
Cleaning Captcha Phrases
What detects presence of any life- sustaining resources ?
Images from Moon and Mars missions
A field that includes methods for acquiring
processing, analyzing, and understanding images Such as: Object detection ?
Computer Vision
Is the process of developing a mathematical representation of any surface of an object such as : Blender ?
3D modeling software
What is CAD ? ( computer aided design)
Is the use of computer systems to assist in the
creation analysis or optimization of a
design
Cheaper and faster
Such as :
Architects build virtual plans
Design computer chips: PCB (Printed Circuit Boards)
Test product prototypes
What is CAM ? ( computer aided manufacturing)
Is the use of software to control machine tools to help manufacture products
and
Translates the design of a product created on computer with CAD tools
It’s Combination of CAD/CAM
which is the manufacturing approach of using computers to control the entire production process is ?
CIM (Computer Integrated Manufacturing )
what are the major steps towards fully automated factory ?
Increased productivity , Enhanced flexibility
and Improved quality
What presentation graphics used for ?
Lectures , Sales demons and Projectors
Example : MS power point
