Using photos of captive Andean bears of known age and pedigree, and photos of wild Andean bear cubs < 6 months old, we evaluated the degree to which visual information may be used to estimate bears’ ages and assess their kinship. We demonstrate that the ages of Andean bear cubs ≤ 6 months old may be estimated from their size relative to their mothers with an average error of < 0.01 ± 13.2 days ...

This paper focuses on User-Generated (UG) photos in the understudied Arab Muslim World. Over four million public photos on Flickr.com represent Arab countries‟ UG presence, with Egypt and Palestine the top countries for the respective keywords of travel and Muslim. The findings also reveal varied United Arab Emirates‟ presence, with ten times more Dubai photos than the next highest emirate Abu ...

This paper presents research in the field of knowledge management for geo-spatial imagery including scanned aerial photos and satellite images. We have developed a web-based system that allows users to query a database of images not only using metadata, but also drawing sketches of configurations of objects they are interested in as well as inputting textual descriptions of their intended task....

According to the principle of space intersection、collinearity equations and error propagation law, mathematical models of theoretical accuracy of direct georeferencing are proposed in this paper. The validity and feasibility of the mathematical models are tested using four sets of actual photos at different scales and terrains. Results indicate that accuracy of direct georeferencing based on sp...

Remote Sensing (RS) data and techniques, in combination with GIS and landscape metrics, are fundamental to analyse and characterise Land Cover (LC) and its changes. The case study here described, has been conducted in the area of Avellino (Southern Italy). To characterise the dynamics of changes during a fifty year period (1954÷2004), a multitemporal set of images has been processed: aerial pho...

In this study, performance of object-oriented classification approach has been tested using medium resolution satellite dataset of Zonguldak testfield. For this purpose, Landsat 7 ETM+ and ASTER images were used because of their nearly similar ground sampling distance (GSD). As a first step, pan-sharpened images were created based on the combination of panchromatic and color bands available in ...

Seagrass meadows are an important coastal habitat serving as a good indicator of healthy coastal ecosystems. Object-based image classification is a new method of seagrass mapping. The goal of the project was to create a GIS model to classify seagrass in the Puck Bay Natura 2000 habitat protected area (Southern Baltic). The technique was used to analyze the seagrass density and fragmentation. To...

A fully operational automatic interior orientation (AUTO_IO) for digital aerial images based on a modified Hough Transform for rough localization of fiducial marks and Least Squares Matching for precise measurement is introduced in this paper. For cameras with fiducial mark identification symbols, e.g. as used in Leica RC30 cameras, the program is capable to determine the orientation of the pho...