last quiz_image processing

Question 1

the process of identifying objects or conditions in images and determining their meaning or significance.

Answer 1

Image Interpretation

Question 2

is needed to relate the visible characteristics on the image to the real-world geographical features, even though some of these features may not be physically visible.

Answer 2

Geographical knowledge

Question 3

refers to the general form, configuration, or outline of individual objects. The shape of some objects is so distinctive that their images may be identified solely from this criterion.

Answer 3

shape

Question 4

_______ of objects on photographs must be considered in the context of the photo scale

Answer 4

size

Question 5

relates to the spatial arrangement of objects. The repetition of certain general forms or relationships is characteristic of many objects, both natural and constructed

Answer 5

Pattern

Question 5

is the frequency of tonal change on the photographic image. It determines the overall visual smoothness or coarseness of image features.

Answer 5

Texture

Question 6

refers to the relative brightness or colour of objects on photographs. Without tonal differences, the shapes, patterns, and textures of objects could not be discerned.

Answer 6

Tone

Question 7

is the frequency of tonal change on the photographic image. It determines the overall visual smoothness or coarseness of image features.

Answer 7

Shadows

Question 7

refers to topographic or geographic location and is a particularly important aid in the identification of land cover types.

Answer 7

Site and Association

Question 8

refers to the occurrence of certain features in relation to others.

Answer 8

Site and Association

Question 9

The process of categorizing numerous amounts of data into a desired number of “themes” or classes using a set of attribute similarities

Answer 9

Image Classification

Question 10

In an images, the pixels are being classified and the values for each band are used as attributes to classify each pixel

Answer 10

Image Classification

Question 11

________________ is a method which examines a large number of unknown pixels and divides them into a number of classed based on natural groupings present in the image values. unlike supervised classification, unsupervised classification does not require analyst-specified training data.

Answer 11

Unsupervised classification

Question 12

we identify sample pixels in an image that belong to certain classes. These are called “training sites”. The image processing software system is then used to develop a statistical or non-statistical characterization of the reflectance for each information class.

Answer 12

Supervised