Spatial sampling

Question 1

what is spatial sampling

Answer 1

taking a subset of data from a larger geographic area and making inferences or predictions based on this area

Question 2

sampling vs quantisation

Answer 2

sampling digitizes the coordinated of the function whereas quantisation digitises the functions amplitude

Question 3

what are the 3 types of image?

Answer 3

1. Binary => 0 or 1
2. Grey scale =>0–>255 one intensity value per pixel
3. Colour images => 0–>255 x3 values per colour channel (red,green,blue)

Question 4

Image histograms

Answer 4

depict how the intensities of the pixels of an image are distributed