Page 19 - DCAP313_LAB_ON_COMPUTER_GRAPHICS

Unit 1: Fundamentals of Computer Graphics

12. IBM was offering an output printer on it is …………………. model in 1952. Notes
(a) 706 (b) 703
(c) 702 (d) 701
13. In graphical …………………. primitives, objects are normally associated with properties.

(a) output (b) roll over
(c) input (d) All of these.
14. Directing pictures to a printer or plotter to produce hard-copy output on ………………….
slides overhead.
(a) 40-mm (b) 35-mm
(c) 38-mm (d) All of these.
15. The evolution of computer graphics is intertwined with ………………… display.

(a) textual (b) output
(c) input (d) All of these.

1.4 Summary

• Computer graphics generally means creation, storage and manipulation of models and
images. Such models come from diverse and expanding set of fields including physical,
mathematical, artistic, biological, and even conceptual (abstract) structures.

• A computer image is usually represented as a discrete grid of picture elements a.k.a. pixels.
The number pixel determines the resolution of the image.
• Computer graphics comprises the creation and representation of simple graphical elements
and images, as well as modern techniques for rendering a virtual reality.
• Fundamentals of computer graphics provide both the theoretical and practical skills to
begin developing computer graphics software.
• The digital image processing for which the input is an image, the output of image processing
can be either an image or a set of characteristics or parameters related to the image.
• Image processing is to apply techniques to modify or interpret existing pictures. It is
widely used in medical applications. Graphical User Interface multiple window, icons,
menus allow a computer setup to be utilized more efficiently.
• A graphics processor accepts graphics commands from the CPU and executes the graphics
commands which may involve drawing into the frame buffer.

1.5 Keywords

Eigen value: Eigen values are a special set of scalars associated with a linear system of equations
(i.e., a matrix equation) that are sometimes also known as characteristic roots, characteristic values.
Frame-buffer: Frame-buffers differ significantly from the vector displays that were common
prior to the advent of the frame-buffer. With a vector display, only the vertices of the graphics
primitives are stored.

Image Synthesis: A synthesized human image is constructed by first sampling the target by
means of 3D scanning and photography and creating a 3D model based on the samples, applying
information and approximations.

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