Hamid Enayati (Translator)
Volume 8, Issue 30 , August 1999, , Pages 29-35
Abstract
Classification of existing digital photogrammetric systems can not be fitted into a simple model due to their growth and variety. It can be said that they are the end of a vision designed through emergence of high-level, special systems which compete the best analytical systems and are uniquely inexpensive ...
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Classification of existing digital photogrammetric systems can not be fitted into a simple model due to their growth and variety. It can be said that they are the end of a vision designed through emergence of high-level, special systems which compete the best analytical systems and are uniquely inexpensive in comparison with other available developed systems, especially for simple uses. DVP is one of the Softcopy commercial photogrammetric systems which has been examined in a principled manner and its characteristics have been preserved during this examination; so, DVP has indeed grown. This idea indicates the development and direction of a method based on application of a micro-computer, images and a mirror stereoscope. It is a simple method easy to learn by oneself in which presented operation is in an effective and efficient way which is based on decreasing personal coefficient or the principle of equality in topography.Naturally, in new method the digital topographic display has become complex, and has become a conveyor from one stage to another used for three-dimensional measurements. It seems that with this idea and description of microcomputer technology, there is reasonable expectation for advances in new topography in microcomputers. Suitable and simple software and hardware of photogrammetry can create potentials for utilization of photogrammetry experts.
Hamid Enayati (Translator)
Volume 8, Issue 29 , May 1999, , Pages 20-25
Abstract
The “Mars 96” Russian satellite began its mission in the fall of 1996. This satellite carries HRSC (stereo cameras with high resolution) and WAOSS (scanner and electronic stereo-optical with obtuse angles) German cameras.
This satellite provides amending images and colored visual mosaics ...
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The “Mars 96” Russian satellite began its mission in the fall of 1996. This satellite carries HRSC (stereo cameras with high resolution) and WAOSS (scanner and electronic stereo-optical with obtuse angles) German cameras.
This satellite provides amending images and colored visual mosaics with fully-automatic process and uses calibrated geometrical information from WAOSS, HRSC and CCD cameras for producing amending images. Orbital information for any line is derived from the whole band of visual information (improved by photogrammetric bundle adjustment) and digital terrain models (DTM) through the Image Matching Method and interpolation techniques.
The geometric aspect of making such mosaics is controlled by the bundle block adjustment method and mosaic’s radiometry is improved in this way. Coverage areas, division lines and characteristics necessary to be known in advance are implemented automatically, and do not have mutual effect on the screen of the image processing system.
High-quality colored mosaics can produce valuable colored information using IHS color conversion and considering their high resolution. This is particularly true about colored topographic images of maps on scales 1: 500,000 to 1: 50,000, and contour lines are derived from a DTM; they are desirable products of this cartographic mission to the planet Mats.
Hamid Enayati (Translator)
Volume 8, Issue 32 , February 1999, , Pages 39-42
Abstract
This paper is about extraction of information by the method of digital photogrammetry for preservation of cultural works. The precise digital model of elevation can be created through such study using a PC (Personal Computer). This model can be combined by visual data to be utilized for protection of ...
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This paper is about extraction of information by the method of digital photogrammetry for preservation of cultural works. The precise digital model of elevation can be created through such study using a PC (Personal Computer). This model can be combined by visual data to be utilized for protection of cultural works.
Hamid Enayati (Translator)
Volume 7, Issue 28 , February 1998, , Pages 6-11
Abstract
This paper presents a new view on fully-automatic aerial triangulation. The concept of automatic extraction system connects nodal points with automatic matching of the branches of nodal points. The matching part is determined by multi-image matching techniques, and each image is achieved through a hierarchical ...
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This paper presents a new view on fully-automatic aerial triangulation. The concept of automatic extraction system connects nodal points with automatic matching of the branches of nodal points. The matching part is determined by multi-image matching techniques, and each image is achieved through a hierarchical manner. Justification of images and terrestrial coordinates of nodal points are calculated simultaneously. Primary results have been reported which show practical aspects of this view.
Hamid Enayati (Translator)
Volume 5, Issue 19 , November 1996, , Pages 57-61
Abstract
The application of Russian satellite images with a precision of over 2m in order to review topographic maps up to a scale of 1: 25,000 was carried out within the framework of a joint project by Belgium and Poland. The KVR-1000 high-precision image on the scale of 1 : 220,000 on Zeiss / Intergraph photoscan ...
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The application of Russian satellite images with a precision of over 2m in order to review topographic maps up to a scale of 1: 25,000 was carried out within the framework of a joint project by Belgium and Poland. The KVR-1000 high-precision image on the scale of 1 : 220,000 on Zeiss / Intergraph photoscan has been scanned as a topographic map of the city of Warsaw in the large format of the Intergraph Scanner ANAT each 3640.
Both Raster images have been analyzed using digital image processing and digital cartography techniques in order to update the changes from 1983 (the date of topographic map revision) to 1992 (i.e. the date of acquiring satellite images). To achieve the result, I'S System 600 and Intergraph ISI-2 software systems installed in the SURFACES lab at the University of Liege, Belgium were utilized.
Like the previously used methods, samples from areas that had changed were introduced to improve the quality of the KVR-1000 digital topographic maps by the SPOT auxiliary data. The KVR-1000 satellite image can be used with acceptable accuracy in order to update the land features on topographic maps in digital form up to a scale of 1: 25,000.
