When performing post-classification comparison using images of different sensors, change detection is still possible even if images have different resolutions. However, in this case, change pixels are detected in the pixel size of coarser resolution image. This problem can be solved using higher resolution aerial photographs or panchromatic images if available. In multi sensor image fusion, ima...

Ophthalmic photography is a system of information transferral. In fundus photography, a visual description of the three-dimensional retinal and choroidal tissues is transferred to film. This twodimensional representation is used by the physician to make judgments concerning the health and treatment of the patient's retina. An accurate representation of the retinal and choroidal tissues is the g...

This paper addresses the potential of a color infrared aerial photograph to provide spatially distributed information for site specific management. In this process digitized color infrared aerial photographs were used to extract vegetation index information. In addition, important crop and soil information were also collected using a grid sampling technique. Crop and soil information contributi...

Rendering terrain data is an important application area in computer graphics. Much early work in computer graphics was motivated by building flight simulators. This is a very taxing application, which requires real-time rendering of potentially very large databases. In addition, terrain rendering is important for geographic information systems and architectural landscape previewing systems. The...

The photographs taken at excavation fields are one of most important materials. It is expected to digitize and save these photographs in the computer system because of difficulty of management to many photographs and losing color problem. We designed and implemented prototype of archaeological photograph library. The library is designed based on Dublin Core Metadata Element set and XML We descr...

We propose a method of image enhancement, based on a spatial domain technique called histogram equalization. Traditional histogram equalization is only useful for images with backgrounds and foregrounds that are both bright or both dark, whereas our method works for images with high dynamic range. The technique is to segment the image into large regions with high contrast separations which are ...

Accurate mapping and effective monitoring of benthic habitat in the Florida Keys are critical in developing management strategies for this valuable coral reef ecosystem. For this study, a framework was designed for automated benthic habitat mapping by combining multiple data sources (hyperspectral, aerial photography, and bathymetry data) and four contemporary imagery processing techniques (dat...

Terrain and obstacle detection is very important for the safety of aircraft operation. The International Civil Aviation Organization (ICAO) issued the requirements for electronic Terrain and Obstacle Data (eTOD) in 2004. The requirements request all countries to finish the survey of eTOD around large airports by 2010. Nevertheless, no traditional surveying approaches satisfy the required precis...

The summering areas of the Eastern Canada-West Greenland (EC-WG) population of Bowhead Whales (Balaena mysticetus) are large and remote, making it difficult to conduct a systematic aerial survey of the entire range in a short period of time. Surveys conducted in different parts of the Bowhead Whales' summer range at different times or in different years cannot be used to obtain a robust estimat...