IT (lecture 4)

Question 1

A …… is a mathematical function, and it conveys some information

Answer 1

signal

Question 2

A signal can be …. dimensional or …. dimensional or ….. dimensional signal

Answer 2

one, two, higher

Question 3

…… signal is a signal that is measured over time such as voice signals

Answer 3

One-dimensional

Question 4

The …… signals are those that are measured over some other physical quantities such as a digital image

Answer 4

two-dimensional

Question 5

An ….. may be defined as a two-dimensional function, f(x,y), where x and y are spatial (plane) coordinates

Answer 5

image

Question 6

The amplitude of f at any pair of coordinates (x,y) is called the ….. or …… of the image at that point

Answer 6

intensity, gray level

Question 7

When x,y, and the intensity values of f are all finite, discrete quantities, we call the image a ……… image

Answer 7

digital

Question 8

…… is the creation of images synthetically

Answer 8

Computer Graphics

Question 9

…… is the enhancement and manipulation of the images- the result of which is usually another image

Answer 9

Image processing

Question 10

……. is similar with image processing, but processing of multiple images, frames

Answer 10

Video processing

Question 11

….. is the analysis and understanding of image content

Answer 11

Computer vision

Question 12

…. is the automated recognition of patterns and reqularities in data

Answer 12

Pattern recognition

Question 13

In image processing, the input is ….. and the output is …..

Answer 13

Image, image

Question 14

In computer graphic, the input is …… and the output is …..

Answer 14

Input description, image

Question 15

In computer vision, the input is ….. and the output is ……

Answer 15

Image, input description

Question 16

In pattern recognition, the input is ….. and the output is …..

Answer 16

One signal, another signal

Question 17

The principle energy source for images in use today is the …….

Answer 17

Electromagnetic energy spectrum

Question 18

Each bundle of energy is called a …..

Answer 18

photon

Question 19

…… could be as simple as being given an image that is already in digital form

Answer 19

Acquisition

Question 20

Generally, the …… stage involves preprocessing such as scaling

Answer 20

Image acquisition

Question 21

….. is the process of manipulating an image so the result is more suitable than the original for a specific application

Answer 21

Image enhancement

Question 22

It is an area that also deals with improving the appearance of an image

Answer 22

Image restoration

Question 23

Image enhancement, is ……, is based on human subjective preferences regarding what constitutes a good enhancement result

Answer 23

Subjective

Question 24

Image restoration, is ….., in the sense that restoration techniques tend to be based on mathematical or probabilistic models of image degradation

Answer 24

Objective

Question 25

It is an area that has been gaining in importance because of the significant increase in the use of digital images over the internet

Answer 25

Color image processing

Question 26

…… is used also as the basis for extracting features of interest in an image

Answer 26

Color

Question 27

……, are the foundation for representing images in various degrees of resolution

Answer 27

Wavelet transforms

Question 28

It is used for image data compression and for pyramidal representation, in which images are subdivided successively into smaller regions

Answer 28

Wavelet transforms

Question 29

Wavelet transforms is used for image ……. and for pyramidal representation, in which images are subdivided successively into smaller regions

Answer 29

Data compression

Question 30

….. deals with techniques for reducing the storage required to save an image, or the bandwidth required to transmit it

Answer 30

Compression

Question 31

….. is a collection of non-linear operations related to the shape or morphology of features in an image

Answer 31

Morphological processing

Question 32

….. deals with tools for extracting image components that are useful in the representation and description of shape

Answer 32

Morphological processing

Question 33

…… rely only on the relative ordering of pixel values, not on their numerical values, therefore are especially suited to the processing of binary images

Answer 33

Morphological operations

Question 34

….. partitions an image into its constituent parts or objects

Answer 34

Segmentation

Question 35

……. segmentation is one of the most difficult tasks in digital image processing

Answer 35

Autonomous

Question 36

The output of ….. stage is usually a raw pixel data, constituting either the boundary of a region or all the points in the region

Answer 36

Segmentation

Question 37

In general, the more accurate the ……, the more likely automated object classification is to succeed

Answer 37

Segmentation

Question 38

….. always follows the output of a segmentation stage

Answer 38

Feature extraction

Question 39

…… refers to finding the features in an image, region, or boundary

Answer 39

Feature detection

Question 40

…. assigns quantitative attributes to the detected features

Answer 40

Feature description

Question 41

….. is the process that assigns a label to an object based on its feature descriptors

Answer 41

Image pattern classification