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542 questions
DDA Line generation Algorithm .
In any 2-Dimensional plane if we connect two points (x0, y0) and (x1, y1), we get a line segment. But in the case of computer graphics we can not directly join any two coordinate points, for that we should calculate intermediate point’s coordinate and put a pixel for each intermediate point, of the desired color with help of functions like putpixel(x, y, K) in C, where (x,y) is our co-ordinate and K denotes some color.
Z-Buffer or Depth-Buffer method
When viewing a picture containing non transparent objects and surfaces, it is not possible to see those objects from view which are behind from the objects closer to eye. To get the realistic screen image, removal of these hidden surfaces is must.
Different between Graphics Card and Video Card
A graphics card is a printed circuit board that houses a processor and a RAM. It is a piece of computer hardware that produces the image you see on a monitor. The visual part of the network helps in controlling and improving the pictures, videos, animations and other features.
Compression of GIF images
GIF is not a data compression method. The original version of GIF is known as GIF87a. It is graphical image format that uses variant of LZW to compress the graphical data and allows to send image between different computers.
Difference between LED and LCD
LED is a type of LCD that actually accompanies the advancement of technology. This replaces the fluorescent tube with backlight technology, which produces a clearer picture than the LCD. LED have wider viewing angle than the LCD.
Mid-Point Circle Drawing Algorithm
We need to plot the perimeter points of a circle whose center co-ordinates and radius are given using the Mid-Point Circle Drawing Algorithm. We use the above algorithm to calculate all the perimeter points of the circle in the first octant and then print them along with their mirror points in the other octants.
Difference Between Flood-fill and Boundary-fill Algorithm
Flood fill algorithm is also known as a seed fill algorithm. It determines the area which is connected to a given node in a multi-dimensional array. This algorithm works by filling or recolouring a selected area containing different colours at the inside portion and therefore the boundary of the image.
Difference between MP4 and MP3
MP4 is a digital multimedia container format Mp3 is an audio coding format Extension used is .mp4 Extension used is .mp3
What is Random-Scan Display ?
In Random-Scan Display electron beam is directed only to the areas of screen where a picture has to be drawn. It is also called vector displays, as it draws picture one line at time.
Raster Scan Displays are most common type of graphics monitor which employs CRT. It is based on television technology. In raster scan system electron beam sweeps across the screen, from top to bottom covering one row at a time.
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