Proceedings, XXth congress: Proceedings, XXth congress

Altan, M. Orhan

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Multivolume work

Persistent identifier:: 1663674213

Title:: Proceedings, XXth congress

Sub title:: Istanbul, 12 - 23 July 2004

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1663674213

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.; Auch bezeichnet als XXth International Congress for Photogrammetry and Remote Sensing

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Document type:: Multivolume work

Volume

Persistent identifier:: 166368779X

Title:: Proceedings, XXth congress

Scope:: IV, 226 Seiten

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 166368779X

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(35,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: VISUAL AND STATISTICAL QUALITY ASSESSMENT AND IMPROVEMENT OF REMOTELY SENSED IMAGES S. Mohammad Shahrokhy

Document type:: Multivolume work

Structure type:: Chapter

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B-YF. Istanbul 2004 When telescope assembles of a sensor are not centralized to a ground point or if detector sets are not synchronized accurately, band to band misregistrationappears and if the image is not misregistration rectified properly, (figure 6). image to map occurs Figure 6. Image No.6 (MODIS) Image to map misregistration 3. PRACTICAL STUDY RESULTS In a comparative study on some satellite images the following results were obtained: a) TERRA-MODIS images have very high geometricQuality except one systematic error called BOWTIE effect caused by multi detector scan line system that could be removed easily and accurately. Another error caused by multdetector scan line imaging system of MODIS is intense striping. MODIS bands systematically have a specific relative delay that causes a slight spatial misregistration of corresponding pixels. b) NOAA-AVHRR images are of high radiometric Quality especially thermal channels, but drop lines were observed frequently. c) IRS-PAN images despite their high resolution, have not appropriate geometric Quality because of misregistration of detector array. Also these images have intenseperiodic and random noise that should be removed and enhanced in seeral stages. d) IRS-LISSIII images have relatively better Radiometric Quality although band missing is reported sometimes. 4. QI AND DEFECT ELIMINATION Once the defect or the problem is recognized, the elimination or improvement process can be perforned. But it should be noted that sometimes defect elimination could not be accomplished perfectly and also however in improvement process the desired element enhances but other elements may be destroyed. For example geometric correction imposes a radiometu blending because of resampling and also noise reduction blurs the image. So there should be an equilibrium point to balance the destructions (Watson 1993). 106 4.1 Radiometric Quality Improvement A quick reference for radiometricQuality improvement could be found in Table4. Quality Defect Manual Automatic Elimination Elimination Striping Equalization of Removing the mean and variance | related frequency of adjacent lines Zone in spectrum Drop Line Replacement of an | Replacement of adjacent line mean of adjacent lines Noise Averaging , Median and Spatial filters adaptive filters Band Missing Replacing a combination of the other bands Table 4. Radiometric Quality defects and improvement methods Regarding the cause of striping defect, theelimination must be performed in order to equalize the appearance of the adjacent lines (figure 7) (Richards & Jia1999). #4 A oe Figure 7. Image No.l (MODIS) Destriped Drop lines are simply loss of data and merely could be eliminated by replacing the other lines or a composition of them (figure 8). Figure 8. Image No2 (AVHRR) after drop line removal

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