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what is the need of homogeneous coordinates to perform more than one transformation at a time use homogeneous coordinates or matrixes they
define clipping and covering exterior clippingclipping is the process of cutting a graphics display to neatly fit a predefined graphics region or the
distinguish between window port amp view port a portion of a picture that is to be displayed by a window is called as window port the display area
what is reflection the reflection is actually the transformation that produces a mirror image of an objectfor this use some angles and lines of
what is shearing the shearing transformation actually slants the object with the x direction or the y direction as neededie this transformation
what is scaling the scaling transformations changes the shape of an object and can be carried out by multiplying every vertex xy by scaling
write short notes on active and passive transformations in the active transformation the points x and x show different coordinates of the similar
what is transformation transformation is the method of introducing changes in the shape size and orientation of the object using scaling rotation
define coherence properties a coherence property of a scene is a part of a scene by which relate single part of the scene with the other parts of
what is scan line algorithm one way to fill the polygon is to apply the inside test ie to check whether the pixel is inside the polygon or outside
what is seed fill one way to fill a polygon is to begin from a given point seed known to be inside the polygon and highlight outward from this
distinguish between convex and concave polygonsif the line joining any two points in the polygon lies totally inside the polygon then they are called
define polygon a polygon is any closed continues sequence of line segments ie a polyline whose last node point is similar as that of its first
what is run length encoding run length encoding is a compression method used to store the intensity values in the frame buffer which keeps each
what do you mean by scan conversion a main task of the display processor is digitizing a picture definition given in an application program into a
where the video controller is used a special purpose processor which is used to control the operation of the display device is called as display
what is bitmap and what is pixmap the frame buffer used in the black and white system is called as bitmap which take one bit per pixel for systems
define pixel and frame bufferpixel is shortened forms of picture element every screen point is referred to as pixel or pel picture definition is
what are the advantages of electrostatic plotters they are faster than pen plotters and very high quality printers recent electrostatic plotters
what are the advantages of laser printer high speed precision and economy quality printers cheap to handle lasts for longer time
what are the features of inkjet printers they can print 2 to 4 pagesminutes resolution is about 360dpi thus better print quality is achieved
what is the difference between impact and non-impact printers impact printer press produced character faces against an inked ribbon on to the
what is a dot size and interdot distance dot size may be explained as the diameter of a single dot on the devices output dot size is also known as
what is meant by addressability the addressability is the number of individual dots per inch dpi that can be formed if the address of the current
what is aspect ratio the ratio of vertical points to the horizontal points essential to produce length of lines in both directions of the screen