Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection: Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection

Laidet, L.

Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection (Volume 2)

Bibliographic data

Multivolume work

Persistent identifier:: 1669258823

Title:: Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection

Sub title:: Toulouse, 13 - 17 Septembre 1982

Year of publication:: 1982

Place of publication:: Toulouse

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1669258823

Language:: English

Editor:: Laidet, L.

Corporations:: International Society for Photogrammetry and Remote Sensing, Commission VII, Interpretation of Data

Adapter:: International Society for Photogrammetry and Remote Sensing, Commission VII, Interpretation of Data

Founder of work:: International Society for Photogrammetry and Remote Sensing, Commission VII, Interpretation of Data

Other corporate:: International Society for Photogrammetry and Remote Sensing, Commission VII, Interpretation of Data

Document type:: Multivolume work

Volume

Persistent identifier:: 1669259897

Title:: Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection

Scope:: XV, 415 Seiten

Year of publication:: 1982

Place of publication:: Toulouse

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1669259897

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(24,7,2)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist ermittelt.

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

Editor:: Laidet, L.

Corporations:: International Society for Photogrammetry and Remote Sensing,, Commission VII, Interpretation of Data

Adapter:: International Society for Photogrammetry and Remote Sensing,, Commission VII, Interpretation of Data

Founder of work:: International Society for Photogrammetry and Remote Sensing,, Commission VII, Interpretation of Data

Other corporate:: International Society for Photogrammetry and Remote Sensing,, Commission VII, Interpretation of Data

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:: WG VII-1 METHODOLOGIE POUR L'AMELIORATION ET LA CLASSIFICATION THEMATIQUE DES DONNEES VISIBLES ET INFRAROUGE. - METHODOLOGY FOR ENHANCEMENT AND THEMATIC CLASSIFICATION OF VISIBLE AND INFRARED DATA.

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: [SESSION 19]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: The Expanded PDCS Digital Image Processing System (EPDCS) by G. H. Xu [...]

Document type:: Multivolume work

Structure type:: Chapter

only need to answer simple Some parameters like line for conversational processing. Tho user questions like yes or no or to type out and column numbers. ii " The PDCS package was tested by using data from the Bjarka-saby area which is situated 200 km south of Linkoping, Sweden. The data were collected on three separate occasions. The system was also used in other research projects both at the Department of Physical Geog- raphy, University of Stockholm and at the Chinese Academy of Fore- Stry. I got very much help from my Swedish friends when 1 developed this system as Chinese guest researen worker in Sweden. The prog- ramme should be considered a product of the friendship between China and Sweden. Hence the system is named PDCS, meaning Programmes Dedicated to China and Sweden. THE CHARACTERISTICS The whole system indudes the following groups of programmes: —Tape handling and subscene extraction Statistics and histogramme print -Image enhancement -Training area extraction, calculation and display -Supervised classification —-Unsupervised classification -Cileaning-up of classified map —Accuracy evaluation -Result out put 1. Tape handling and subscene extraction The programmes are used when handling original landsat computer compatible tapes Produced by BROS data center with different data formats. The landsat scene is divided into either four or two Strips. The programmes can read and dump any subscenc using only one tape station and without temporary memory. They can also read the information including ID record. Header record. Ancillary re- cord and Annotation record, and print it on the line-printer. 2. Statistics and histogramme print. The progamme gives the user some initial information about the subscene under study. The statistics calculated by this programme include mean and standard deviation of brightness levels of different bands, cova- riance and correlation matrices.“ ^... The histogramme shows absolute and relative frequency and accumulated frequency of brightness levels. Both of statictics and histogramme are printed on the line-prin- ter. 3. Image enhancement Image enhancement is an important task of image processing. EPICS includes the programmes used for a contrast enhan-cement, density slicing, combinations of images and edge enhancement. One type of contrast enhancement is made by linear transforma- tion of the grey scale. Another type of contrast enhancement is performed by using equal probability quantizer. In the EPDCS system the third method is used. It is mid- way between the first two methods I.e. on one hand, it is better than the first one to show the most : better th: levels ar With - scales fo Hence, the levels, si other iy^ ficution : better th: Anoth. binations At la 4. Tr The c sidered t tion. The the obser areas hav training Gan. perfo A. Tp 30 re Fig anticlo

Access restriction

Copyright

fullscreen: Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection (Volume 2)

Multivolume work

Volume

Chapter

Chapter

Chapter

Table of contents

Cite and reuse

Volume

Chapter

Image

Image fragment

Citation links

Citation recommendation