http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/101 Wed, 17 Jun 2026 09:50:28 GMT 2026-06-17T09:50:28Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31370 Title: PERFORMANCE EVALUATION OF NON-PARAMETRIC CAMERA FOR 3D RECONSTRUCTION OF BUILDING Authors: Ajayi, O. G; Baba, M; Alademomi, A. S; Opaluwa, Y. D Abstract: The demand for three-dimensional (3D) geospatial data and modelling for urban development has been continuously increasing because many GIS problems can only be adequately solved in 3D rather than the traditional 2/2.5D spatial representations. This paper explores the applicability of using non-parametric camera for 3D reconstruction of building using 3DF Zephyr, an open-source photogrammetric software. About fifty (50) overlapping images were acquired with the aid of an amateur non-parametric camera; a Casio Exilim EX-Z3 with couple charged device (CCD) of 3.2 mega pixels. The process of reconstructing the building from the acquired overlapping images involved automatic camera orientation and generation of sparse and dense point clouds of the object. The result showed that the estimated percentage errors in the total area and length of the reconstructed building when compared to the real object are 5.65% and 7.4%, respectively. The findings of the study shows that relatively accurate 3D reconstruction of objects can be achieved efficiently and with less budget using a non-metric camera and thus recommended the use of non-parametric cameras for 3D reconstruction of buildings especially for reconnaissance applications. Further studies will investigate the performance of other available open-source photogrammetric software packages for 3D object reconstruction. Mon, 28 Mar 2022 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31370 2022-03-28T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31369 Title: ANALYSIS OF SEA LEVEL ANOMALY OVER NIGERIA COASTAL AREA USING MULTI-MISSION SATELLITE ALTIMETRY DATA Authors: Baba, M; Opaluwa, Y. D.; Faruna, S. O. Abstract: Sea level rise phenomenon is one of the important global issues which is slowly threatening human survival and impairing economic development. This phenomenon has significant impacts on the social economy, natural environment, and ecosystem of coastal areas. Satellite altimeter data has offered a great opportunity for adopting remote sensing technology in studying sea level changes. This study presents the sea level anomalies (SLA) variation and the predicted SLA trend along the Nigeria coast using the satellite altimetry technique for the period of 12 months ((January 2021 to December 2021). SLA hourly gridded data was acquired from the Archiving Validation and Interpretation of Satellite Oceanographic Data (AVISO) portal. The monthly trend of the SLA was analysed for the period. Linear regression statistical template was implored to predict SLA trend for the next four years at two years intervals. It was found that the month of November recorded the highest SLA value of 204.62mm while the month of August recorded the lowest SLA value of 74.40mm. The SLA predicted values obtain at 95% confident level have an upward increase of 81.40mm as at year 2023 and 93.04mm in the year 2025. Analyses of Long-term time series data may be needed to arrive at a justified conclusion. Mon, 28 Mar 2022 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31369 2022-03-28T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31288 Title: DETERMINATION OF EXTERIOR ORIENTATION PARAMETERS FROM A SINGLE OBLIQUE PHOTOGRAPH :- LEAST SQUARES APPROACH Authors: Samaila-Ija, H. A.; Odumosu, J. O.; Ajayi, O. G.; Zitta, N.; Adesina, E. A.; Kuta, A. A. Abstract: This paper presents a simple least squares approach to determination of exterior orientation parameters using a parametric form solution to the conventional collinearity-condition equation for a single oblique photograph. A MATLAB based program has been written to perform the required computation by two methods namely; “iterative model” and “noniterative tilt photo-geerator equation”. With a Standard error of 10.77m, 10.77m and 279.31m for the𝑋0, 𝑌0 and 𝑍0 respectively, the “Non-iterative Tilt Photo Generator Equation” Model was chosen as a better fit for the Solution although the accuracy achieved is unacceptable for higher order survey tasks. This therefore confirms that stereo images are better suited for higher order survey task Mon, 02 Mar 2015 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31288 2015-03-02T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31287 Title: APPLICABILITY OF GLOBAL PRESSURE AND TEMPERATURE MODEL (GPT2w) FOR GPS METEOROLOGY IN PENINSULAR Authors: Opaluwa, Y. D.; Musa, Tajul A.; Omar, Kamaludin M; Omar, Hiaham A.; Samail-Ija, H. A. Abstract: Global Positioning System (GPS) meteorology requires that, surface meteorological data (temperature and pressure) should be preferably obtained from in-situ measurements co-locating with or close to the GPS antenna, this is not always available because most GPS network is for positioning and navigation. This paper presents an assessment of GPT2w model for GPS meteorology in the equatorial region; therefore, a study over Malaysian Peninsula was conducted. The accuracy of the model interpolated temperature and pressure was first evaluated based on meteorological data interpolated from AWS observations. Using the AWS-based IWV as reference, the GPS-derived IWV from GPT2w model was assessed. From the results, relative accuracy of 1.61%, 0.67% and 1.27% were obtained for the GPT2w model-based IWV at BANT, GETI and PEKN respectively with a correlation coefficient of over 0.9 at all the GPS stations. Therefore, applicability of the GPT2w model for GPS meteorology would be beneficial for GPS atmospheric remote sensing in Malaysia. Tue, 02 May 2017 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/31287 2017-05-02T00:00:00Z