IMAGE INTERPRETATION AND ANALYSIS
Image interpretation is defined as the extraction
of qualitative and quantitative information in the form of a map, about the
shape, location, structure, function, quality, condition, relationship of and
between objects, etc. by using human knowledge or experience.
are all the Types of image interpretation?
Photo interpretation photographic interpretation and image
interpretation are the terms used to interpret the Visual Image Interpretation.
is Visual Image interpretation?
Visual Image interpretation is the act of examining
photographs/images for the purpose of identifying objects and judging their
is Photo interpretation?
Photo interpretation is defined as the process of identifying
objects or conditions in aerial photographs and determining their meaning or
Image reading is an elemental form of image
interpretation. It corresponds to simple identification of objects using such
elements as shape, size, pattern, tone, texture, color, shadow and other
associated relationships. Image reading is usually implemented with
interpretation keys with respect to each object .
Image measurement is the extraction of physical
quantities, such as length, location, height, density, temperature and so on,
by using reference data or calibration data deductively or inductively.
is image analysis?
Image analysis is the understanding of the relationship
between interpreted information and the actual status or phenomenon, and to
evaluate the situation. 7. What is thematic map?
Extracted information will be finally represented in a map
form called an interpretation map or a thematic map.
are the Image interpretation elements ?
The eight elements of image interpretation are shape, size,
tone, shadows, texture, site, pattern and association.
is Digital Image Processing?
Digital Image Processing is a collection of techniques for the
manipulation of digital images by computers. The raw data received from the
imaging sensors on the satellite platforms contains flaws and deficiencies. To
overcome these flaws and deficiencies in order to get the originality of the
data, it needs to undergo several steps of processing. This will vary from
image to image depending on the type of image format, initial condition of the
image and the information of interest and the composition of the image scene.
10. What are the general steps of image processing? The three
steps of image processing are ,
Display and enhancement
about pre processing?
In the preprocessing ,prepare data for subsequent
analysis that attempts to correct or compensate for systematic errors.
is Image Enhancement?
The operations are carried out to improve
the interpretability of the image by increasing apparent contrast among various
features in the scene. The enhancement techniques depend upon two factors
mainly l The digital data (i.e. with spectral bands and resolution)
the objectives of interpretation?
The objectives of interpretation as an image enhancement
technique often drastically alters the original numeric data, it is normally
used only for visual (manual) interpretation and not for further numeric
analysis. Common enhancements include image reduction, image rectification,
image magnification, transect extraction, contrast adjustments, band ratioing,
spatial filtering, Fourier transformations, principal component analysis and
is digital image?
Digital Image is the matrix of 'Digital
digital mage is composed of thousands of pixels. Each pixel represents the
brightness of small region on the
earth surface.Digital Image processing involves
the manipulation and interpretation of digital image with the aid of computer.
16.What is filtering?
Filtering means the smoothening of an image using different
Masks or Kernels.\
17.What is spatial filtering?
' Spatial Filtering can be
described as selectively emphasizing or suppressing
at different spatial scales over an image. '
Spatial operation consists in
changing the values of each pixels according to the values of the pixels in the
18.What is convolution?
A convolution is an integral
which expresses the amount of overlap of one function g as it is shifted
over another function f. '