Wyniki wyszukiwania

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Method of exterior orientation of aerial images by matching orthoimages

100%

Paszotta Z.

Rozprawy i Monografie. Uniwersytet Warmińsko-Mazurski w Olsztynie

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2000

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tom 28

1-45

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Detection of snow cover on the area of Poland using AVHRR-NOAA satellite information

63%

Struzik P., Paszotta Z.

Acta Academiae Agriculturae ac Technicae Olstenensis. Geodaesia et Ruris Regulatio

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1997

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nr 27

37-48

During last two years in Satellite Data Receiving and Processing Centre in Krakow, the method of snow cover detection was prepared and tested. This method is based on information from visible and infrared channels of the AVHRR instrument. Detection of the snow cover consist of: real time receiving of daytime AVHRR transmission, selection of appropriate area in all AVHRR channels, calibration of visible and infrared channels, snow cover detection and cloud masking, transformation of classified image to map projection and insertion of the coast lines to distinguish land snow and sea ice. Most important part of this method concern separation of snow and clouds especially on images with low Sun elevation. Use of the all five AVHRR channels and correction of the Sun elevation and Sun to sensor position are necessary. For good snow detection in forest area, classified image with types of ground cover is used as mask. This image were prepared using temporal profiles of vegetation indices calculated from AVHRR data on the area of Poland. In case of partial cloudiness, composition of several classified and geometrically corrected images is available.

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Teledetekcyjne badania zmian niektorych elementow srodowiska

63%

Sikorski K., Paszotta Z.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1992

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tom 401

91-105

4

Internet photogrammetry for inspection of seaports

51%

Paszotta Z., Szumilo M., Szulwic J.

Polish Maritime Research

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2017

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tom 24

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nr Special Issue S1

This paper intends to point out the possibility of using Internet photogrammetry to construct 3D models from the images obtained by means of UAVs (Unmanned Aerial Vehicles). The solutions may be useful for the inspection of ports as to the content of cargo, transport safety or the assessment of the technical infrastructure of port and quays. The solution can be a complement to measurements made by using laser scanning and traditional surveying methods. In this paper the authors recommend a solution useful for creating 3D models from images acquired by the UAV using non-metric images from digital cameras. The developed algorithms, created and presented software allows to generate 3D models through the Internet in two modes: anaglyph and display in shutter systems. The problem of 3D image generation in photogrammetry is solved by using epipolar images. The appropriate method was presented by Kreiling in 1976. However, it applies to photogrammetric images for which the internal orientation is known. In the case of digital images obtained with non-metric cameras it is required to use another solution based on the fundamental matrix concept, introduced by Luong in 1992. In order to determine the matrix which defines the relationship between left and right digital image it is required to have at least eight homologous points. To determine the solution it is necessary to use the SVD (singular value decomposition). By using the fundamental matrix the epipolar lines are determined, which makes the correct orientation of images making stereo pairs, possible. The appropriate mathematical bases and illustrations are included in the publication

Ograniczanie wyników

1 Acta Academiae Agriculturae ac Technicae Olstenensis. Geodaesia et Ruris Regulatio

1 Polish Maritime Research

1 Rozprawy i Monografie. Uniwersytet Warmińsko-Mazurski w Olsztynie

1 Zeszyty Problemowe Postępów Nauk Rolniczych

4 Paszotta Z.

1 Sikorski K.

1 Struzik P.

1 Szulwic J.

1 Szumilo M.

1 2017

1 2000

1 1997

1 1992

Method of exterior orientation of aerial images by matching orthoimages

Detection of snow cover on the area of Poland using AVHRR-NOAA satellite information

Teledetekcyjne badania zmian niektorych elementow srodowiska

Internet photogrammetry for inspection of seaports