FCE 552: Engineering Survey IV    Dept. of Geospatial & Space Technology                    Digital Image Processing1.    ...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology   Procedures of Image ProcessingEngineering Survey...
FCE 552: Engineering Survey IV     Dept. of Geospatial & Space Technology                  Data Flow in Remote SensingB. S...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology           Data Processing in Remote SensingB. Sc. ...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology            Image Processing SystemsB. Sc. (Civil E...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space TechnologyImage Processing Systems with Personal Computer   B...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space TechnologyImage Processing Systems with Network System  B. Sc...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology            Digital Image Processing -             ...
FCE 552: Engineering Survey IV             Dept. of Geospatial & Space Technology                             Radiometric ...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology          Elements of Radiometric CorrectionB. Sc. ...
FCE 552: Engineering Survey IV            Dept. of Geospatial & Space Technology                             Atmospheric E...
FCE 552: Engineering Survey IV        Dept. of Geospatial & Space Technology                        Atmospheric Correction...
FCE 552: Engineering Survey IV        Dept. of Geospatial & Space Technology                      Geometric Distortions (1...
FCE 552: Engineering Survey IV        Dept. of Geospatial & Space Technology                      Geometric Distortions (2...
FCE 552: Engineering Survey IV    Dept. of Geospatial & Space Technology                 Flow of Geometric CorrectionB. Sc...
FCE 552: Engineering Survey IV    Dept. of Geospatial & Space Technology                 Relationship between Image and   ...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology             Example of Geometric CorrectionB. Sc. ...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology            Digital Image Processing -             ...
FCE 552: Engineering Survey IV      Dept. of Geospatial & Space Technology                    Types of Image ConversionB. ...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space TechnologyImage Enhancement – Grey Scale ConversionB. Sc. (Ci...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space TechnologyImage Enhancement – Histogram EqualizationB. Sc. (C...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology     Image Enhancement - Color CompositionB. Sc. (C...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology       Feature Extraction - Spatial FilteringB. Sc....
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology    Normalized Difference Vegetation IndexB. Sc. (C...
FCE 552: Engineering Survey IV     Dept. of Geospatial & Space Technology                  Principal Component Analysis   ...
FCE 552: Engineering Survey IV     Dept. of Geospatial & Space Technology                  Principal Component AnalysisB. ...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology            Digital Image Processing -             ...
FCE 552: Engineering Survey IV        Dept. of Geospatial & Space Technology                    Definition of Classificati...
FCE 552: Engineering Survey IV        Dept. of Geospatial & Space Technology                      Concept of Classificatio...
FCE 552: Engineering Survey IV         Dept. of Geospatial & Space Technology                        Types of Classificati...
FCE 552: Engineering Survey IV       Dept. of Geospatial & Space Technology                    Features for Classification...
FCE 552: Engineering Survey IV      Dept. of Geospatial & Space Technology                   Procedures of ClassificationB...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology    Comparison between different classifiersB. Sc. ...
FCE 552: Engineering Survey IV         Dept. of Geospatial & Space Technology                       Advanced Classificatio...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space Technology            Recognition of Man-made ObjectsB. Sc. (...
FCE 552: Engineering Survey IV     Dept. of Geospatial & Space Technology                  Example of Road RecognitionB. S...
FCE 552: Engineering Survey IV   Dept. of Geospatial & Space TechnologyExample of Semi-automated Recognition of Houses  B....
FCE 552: Engineering Survey IV         Dept. of Geospatial & Space Technology          Remote Sensing Data Selection Crite...
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Fce 552 part6-4

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Fce 552 part6-4

  1. 1. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Digital Image Processing1. Procedures of Image Processing2. Image Processing Systems3. Digital Image Processing – Correction4. Digital Image Processing – Conversion5. Digital Image Processing – Classification B. Sc. (Civil Engineering) University of Nairobi
  2. 2. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Procedures of Image ProcessingEngineering Surveying IV University of Nairobi
  3. 3. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Data Flow in Remote SensingB. Sc. (Civil Engineering) University of Nairobi
  4. 4. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Data Processing in Remote SensingB. Sc. (Civil Engineering) University of Nairobi
  5. 5. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Image Processing SystemsB. Sc. (Civil Engineering) University of Nairobi
  6. 6. FCE 552: Engineering Survey IV Dept. of Geospatial & Space TechnologyImage Processing Systems with Personal Computer B. Sc. (Civil Engineering) University of Nairobi
  7. 7. FCE 552: Engineering Survey IV Dept. of Geospatial & Space TechnologyImage Processing Systems with Network System B. Sc. (Civil Engineering) University of Nairobi
  8. 8. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Digital Image Processing - CorrectionB. Sc. (Civil Engineering) University of Nairobi
  9. 9. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Radiometric Distortion Due to variations in scene illumination and viewing geometry, atmospheric conditions, and sensor noise and response will vary depending on the specific sensor and platform used to acquire the data and the conditions during data acquisition; It may be desirable to convert and/or calibrate the data to known (absolute) radiation or reflectance units to facilitate comparison between data.B. Sc. (Civil Engineering) University of Nairobi
  10. 10. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Elements of Radiometric CorrectionB. Sc. (Civil Engineering) University of Nairobi
  11. 11. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Atmospheric EffectsB. Sc. (Civil Engineering) University of Nairobi
  12. 12. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Atmospheric CorrectionB. Sc. (Civil Engineering) University of Nairobi
  13. 13. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Geometric Distortions (1) Due to several factors, including: the perspective of the sensor optics; the motion of the scanning system; the motion of the platform; the platform altitude, attitude, and velocity; the terrain relief; and, the curvature and rotation of the Earth. To correct for these errors geometric registration of the imagery to a known ground coordinate system must be performed i.e., georeferencing.B. Sc. (Civil Engineering) University of Nairobi
  14. 14. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Geometric Distortions (2)B. Sc. (Civil Engineering) University of Nairobi
  15. 15. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Flow of Geometric CorrectionB. Sc. (Civil Engineering) University of Nairobi
  16. 16. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Relationship between Image and Ground Control SystemsB. Sc. (Civil Engineering) University of Nairobi
  17. 17. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Example of Geometric CorrectionB. Sc. (Civil Engineering) University of Nairobi
  18. 18. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Digital Image Processing - ConversionB. Sc. (Civil Engineering) University of Nairobi
  19. 19. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Types of Image ConversionB. Sc. (Civil Engineering) University of Nairobi
  20. 20. FCE 552: Engineering Survey IV Dept. of Geospatial & Space TechnologyImage Enhancement – Grey Scale ConversionB. Sc. (Civil Engineering) University of Nairobi
  21. 21. FCE 552: Engineering Survey IV Dept. of Geospatial & Space TechnologyImage Enhancement – Histogram EqualizationB. Sc. (Civil Engineering) University of Nairobi
  22. 22. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Image Enhancement - Color CompositionB. Sc. (Civil Engineering) University of Nairobi
  23. 23. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Feature Extraction - Spatial FilteringB. Sc. (Civil Engineering) University of Nairobi
  24. 24. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Normalized Difference Vegetation IndexB. Sc. (Civil Engineering) University of Nairobi
  25. 25. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Principal Component Analysis The objective is to reduce the dimensionality in the bands thus maximizing the amount of information from the original data into the least number of new components.B. Sc. (Civil Engineering) University of Nairobi
  26. 26. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Principal Component AnalysisB. Sc. (Civil Engineering) University of Nairobi
  27. 27. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Digital Image Processing - ClassificationB. Sc. (Civil Engineering) University of Nairobi
  28. 28. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Definition of ClassificationB. Sc. (Civil Engineering) University of Nairobi
  29. 29. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Concept of ClassificationB. Sc. (Civil Engineering) University of Nairobi
  30. 30. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Types of ClassificationsSupervised classification where the operator definesthe clusters during the training process using trainingdata obtained from ground truth.Unsupervised classification involves a clusteringalgorithm automatically finding and defining a numberof clusters in the feature space using only imagecharacteristics or features.B. Sc. (Civil Engineering) University of Nairobi
  31. 31. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Features for Classification Multi-spectral features Multi-temporal features Texture Height information (DTM/DEM) Indices (e.g., NDVI)B. Sc. (Civil Engineering) University of Nairobi
  32. 32. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Procedures of ClassificationB. Sc. (Civil Engineering) University of Nairobi
  33. 33. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Comparison between different classifiersB. Sc. (Civil Engineering) University of Nairobi
  34. 34. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Advanced Classifications Fuzzy Classification Contextual Classification Artificial Neural Network Classification Cognition-based ClassificationB. Sc. (Civil Engineering) University of Nairobi
  35. 35. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Recognition of Man-made ObjectsB. Sc. (Civil Engineering) University of Nairobi
  36. 36. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Example of Road RecognitionB. Sc. (Civil Engineering) University of Nairobi
  37. 37. FCE 552: Engineering Survey IV Dept. of Geospatial & Space TechnologyExample of Semi-automated Recognition of Houses B. Sc. (Civil Engineering) University of Nairobi
  38. 38. FCE 552: Engineering Survey IV Dept. of Geospatial & Space Technology Remote Sensing Data Selection Criteria Depending on the application, the information of classes of interest need to be defined and their spatio-temporal characteristics assessed. On the basis of these, the most appropriate data can be selected and the criteria include:- Sensor type (resolution, level of detail, etc). Relevant wavelength bands. Date of acquisition (important for phenomena that are time dependent, also considerations in regard to cloud cover and amount of illumination should be taken into account. Budgetary Criteria. B. Sc. (Civil Engineering) University of Nairobi

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