image processing

Question 1

preprocessing

Answer 1

steps and techniques applied to raw data before it undergoes further analysis or enters a specific system or algorithm
purpose: extracting reasonable context

Question 2

morphology

Answer 2

a branch of image processing which is particularly useful in analyzing shapes

Question 3

erosion

Answer 3

results in objects becoming smaller, small object disappearing, and larger objects splitting into smaller objects

Question 4

dilation

Answer 4

results in an object becoming bigger, small holes being filled and object being merged

Question 5

opening

Answer 5

erosion + dilation
removes small holes and joins narrow isthmus between objects; the object is more compact

Question 6

closing

Answer 6

dilation + erosion
removes small, isolated noisy objects while the main object preserves its original size; it can be used to retain object of a certain shape

Question 7

connectivity

Answer 7

decides which pixels are neighbours

Question 8

labeling

Answer 8

extracting connected components

Question 9

BLOB

Answer 9

group of connected pixels in a binary image

Question 10

neighbourhood proccessing

Question 11

point processing

Question 12

mean filter

Answer 12

calculates the average of the colours of the neighbours including the pixel itself