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Visual Image Interpretation
V Bhat
Identify me
Interpretation Keys
• Tone
• Size
• Shape
• Texture
• Association
• Shadow
• Site
• Pattern
Tone
• Relative brightness of grey level
on black and white image or
color/F.C.C image
• Tone is the measure of the
intensity of the reflected or
emitted radiation of the objects
of the terrain
Texture
• Frequency of tonal variation
in an image
• Texture is produced by an
aggregate unit of features
which may be too small to be
clearly discerned individually
on the image
Pattern
• Spatial arrangement of the objects
• Objects both natural and manmade have a pattern which aids in their
recognition
• The repetition of certain general form or relationship in tones and
texture creates a pattern
Size
• In the context of the image
scale or resolution
• It is important to assess the
size of a target relative to
other objects in the scene, as
well as the absolute size, to
aid in the interpretation of
that target
Shape
• General form, configuration or
outline of an individual object
• Most important single factors for
recognizing object from an image.
man-made objects Vs natural
environment
Shadow
• helpful element in image interpretation
• It also creates difficulties for some objects
in their identification in the image
Association
• Occurrence of certain features in relation to others objects in the
imagery
• In urban area a smooth vegetation pattern generally refers to a play
ground or grass land not agricultural land
Site
• Refers to topographic or
geographic location
• It is also an important element in
image interpretation when objects
are not clearly identified using the
previous the elements
Have a try now…
Visual Image Interpretation in Remote Sensing
Visual Image Interpretation in Remote Sensing
Visual Image Interpretation in Remote Sensing
Visual Image Interpretation in Remote Sensing

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Visual Image Interpretation in Remote Sensing

  • 3. Interpretation Keys • Tone • Size • Shape • Texture • Association • Shadow • Site • Pattern
  • 4. Tone • Relative brightness of grey level on black and white image or color/F.C.C image • Tone is the measure of the intensity of the reflected or emitted radiation of the objects of the terrain
  • 5. Texture • Frequency of tonal variation in an image • Texture is produced by an aggregate unit of features which may be too small to be clearly discerned individually on the image
  • 6.
  • 7. Pattern • Spatial arrangement of the objects • Objects both natural and manmade have a pattern which aids in their recognition • The repetition of certain general form or relationship in tones and texture creates a pattern
  • 8.
  • 9.
  • 10. Size • In the context of the image scale or resolution • It is important to assess the size of a target relative to other objects in the scene, as well as the absolute size, to aid in the interpretation of that target
  • 11. Shape • General form, configuration or outline of an individual object • Most important single factors for recognizing object from an image. man-made objects Vs natural environment
  • 12. Shadow • helpful element in image interpretation • It also creates difficulties for some objects in their identification in the image
  • 13. Association • Occurrence of certain features in relation to others objects in the imagery • In urban area a smooth vegetation pattern generally refers to a play ground or grass land not agricultural land
  • 14. Site • Refers to topographic or geographic location • It is also an important element in image interpretation when objects are not clearly identified using the previous the elements
  • 15. Have a try now…