PC Graphics Quiz # 1

Select from the following choices the one that most closely completes the Shannon sampling theorem: "The ideal samples of a continuous function contain all the information in the original function if and only if the continuous function is sampled at a frequency ________________ the highest frequency in the function."

Equal to

Greater than twice

Greater than one-half

Less than one-half

The serial execution of the processes applied to geometric primitives (text, lines, polygons, curves, and surfaces) in a graphics package to produce two-dimensional output is called its:

Execution LIFO stack

Graphical modeling

Transmogrification

Rendering pipeline

What does the term "bezier" imply?

A measurement of printer resolution that defines how many dots of ink are placed on the page when the image is printed.

The term that describes one way that illustration software may create curves and shapes by using control points and control handles.

Special points placed around an active object that are used to manipulate the object when clicked and dragged with the mouse or other pointing device.

A graph that depicts the tonal range of an image.

What is meant by the term crop?

In proportional spacing, the tightening of space between letters to create a visually appealing flow to the text.

The analysis of a picture using techniques that can identify shades, colors, and relationships that cannot be perceived by the human eye.

Changing or improving graphics images, either interactively using a paint program or by using software routines that alter contrast, smooth lines, or filter out unwanted data.

Trimming or masking of photos, graphics, drawings, or illustrations.

The process of using an image described in a vector-graphics format and converting it into a bitmapped image as output on a display or printer, or as storage in a bitmapped file is known as

Pixelation

Rasterization

Transmogrification

Animation

Another term for the video output device for storing the graphic image as it is being formed and later used for displaying the image is:

FIFO stack

Frame buffer

Flash drive

L3 cache

Which of the following graphical formats is/are always low-resolution (8-bit) bitmap graphics?

JPEG

GIF

TIFF

SVG

In computer graphics, a technique in which irregularities in shading are created for simulating rough textures is called:

Cosine mapping

Bump mapping

Bleed mapping

Image mapping

Which of the following is/are typical steps in a graphical pipeline that converts three-dimensional objects for two-dimensional display or printing?

Hidden line/hidden surface removal (HLHSR)

Rasterization

Viewport mapping and clipping

Writing to the framebuffer

Which of the following techniques reduces the appearance of jagged edges of lines and edges in raster graphics?

Warnock space subdivision

Depth sort

Gouraud shading

Anti-aliasing

The first procedure in the OpenGL pipeline is to transform a 3-D point that is defined in the object coordinate system into the world coordinate system. This step has three possible transformations: rotation, scaling, and translation. Which one of those below is typically the correct order for executing these three transformations?

First rotation, then translation, and then scaling.

First scaling, then rotation, and then translation.

First translation, then scaling, and then rotation.

First scaling, then translation, and then rotation.

What does the term "constraint" imply?

A graphics processing technique that simulates transparency or translucency for objects in a 3D scene to create visual effects like smoke, glass, or water.

The section of the graphics memory that stores the stencil data.

. A rule or condition that must be followed regarding how the individual objects within an graphic can or cannot move, such as a wrist having to be attached to both a hand and an end of the lower arm.

Memory that is dedicated to the graphics processor and used to store rendered pixels before they are displayed on the monitor.

Which of the following colors belong to the standard four-color subtractive color model used in color printing or otherwise used to describe the printing process?

Red

Magenta

Yellow

Green

A technique for achieving higher quality in lower-quality images is called __________. It takes advantage of an optical illusion to simulate 24-bit quality with 8-bit or 16-bit images:

Dithering

3-D pipeline

Interpolation

Surface removal

When considering illumination from light sources, which of the following types of light sources has the same intensity in all directions:

Point source

Spot light

Parallel light

Specular

Which one of the following is a data structure used to organize objects within a space, which can be used in hidden-surface removal and in ray tracing?

Patch mesh

Circular buffer

Binary space partitioning (BSP) tree

Hash table

The process whereby a specific key color (often blue or green) within an image is made transparent when that image is mixed with another image is known as:

Graphic keying

Chroma keying

Shade keying

Scissors keying

Which of the following vector graphics editors used to process digital graphics is/are open source, instead of being proprietary?

Illustrator

Visio

Flash

Inkscape

The vector-graphics package that was developed by Microsoft is:

Draw

Inkscape

Illustrator

Visio

Which of the following raster graphics editors used to process digital graphics and photographs is/are open source, instead of being proprietary?

Photshop

Paint Shop Pro (PSP)

GIMP

Photoshop Elements

What does the term "stroke weight" denote?

A term that illustration software uses to specify the thickness of a line when drawing a path.

A process where the software adds new pixels to an image based on the color values of the surrounding pixels.

A term for the descriptive information embedded inside an image or other type of file.

A measurement of the output quality of an image, usually in terms of samples, pixels, dots, or lines per inch.

The number of bits per pixel typically used for the color depth to be described as being a truecolor format is:

4

16

24

36

What is meant by the term fog?

The mixing of an image with a fixed color that thickens as the image's pixels get further away from the viewpoint.

A special type of channel used in graphics software for saving selections.

a technique of blending bitmap-based images and text to reduce the stair-stepping or jagged appearance.

The relationship of an image's width to height or its proportions.

What is meant by the term rigging?

A combination of colors that appear to have a stronger impact and highly visible look.

The area of the graphics memory used to store the Z or depth information about rendered objects.

The process of linking a 3-D object, such as modeling a character, to its bone structure (skeletal animation).

Which one of the following graphics standard specifications is the main competitor to Microsoft's Direct3D (the 3D graphics API within DirectX)?

OpenGL

PHIGS

X 11

IRIS GL

Which of the following graphic formats allow for animation?

GIF

JPEG

TIFF

PNG

What is meant by the term stroke?

A reddish brown monochrome tint that gives the picture a warm, antique feeling.

A term that illustration software uses to describe the width of a line in a path.

A photograph whose edges fade out gradually.

Copying a block of pixels from one place to another.

Which of the following best describes the term "vertex-vertex polygon mesh?"

A process by which color information is interpolated across the face of the polygon to determine the colors at each pixel.

A method of using two buffers, one for display and the other for rendering.

The simplest mathematical representation of a mesh, but which is not widely used due to the lack of explicit face and edge information.

A method of increasing the quality of a texture map by applying different-resolution texture maps for different objects in the same image, depending on their size and depth.

What is meant by the term gradient?

A binary representation in which a bit or set of bits corresponds to some part of an object such as an image or font.

In computer graphics, a curve that is generated using a mathematical formula which assures continuity with other b-splines

A color (or grayscale) fill that gradually blends from one color to another, perhaps from light to dark, for example.

In computer graphics, a technique for simulating rough textures by creating irregularities in shading.

_________ adds appropriately colored pixels to an image to make it seem as though more colors were present in the original.

Imposition

Logo

Dithering

Over print

Quiz:	PC Graphics Quiz # 1
Subject:	Basic Pc Graphics
Total Questions:	30 MCQs
Time:	30 Minutes