The concepts of triangulation and stereoscopy are the foundation of photogrammetry where triangulation entails calculating the angles created by the point being observed, another point with known coordinates and a camera. Contrarily, stereoscopy uses minute variations in perspective between two photos taken from various angles to produce the illusion of three dimensions. What is Photogrammetry? …
The field of Geographic Information Systems relies heavily on satellite imagery to collect, analyze, and interpret spatial data. Satellite photography which is the process of using images from man-made satellites orbiting the planet to represent features or objects on Earth’s surface, has become an indispensable tool for numerous industries. Applications of Satellite Imagery Disaster Management …
The term “satellite imagery” describes the picture of the Earth’s surface that is taken by imaging satellites in orbit around the planet where these satellites collect data at multiple wavelengths using a variety of sensors, including radar and optical ones, opening for a wide range of uses. Satellite photography has emerged as a crucial element …
Our everyday lives now wouldn’t be the same without satellite maps which offer a multitude of information for anything from environmental monitoring to navigation where satellite maps are essential for Geographic Information Systems because they provide an aerial perspective of the Earth. The visual depiction of Earth’s surface that orbiting satellites collect is called satellite …
Aerial photogrammetry is a cutting-edge method in Geographic Information Systems (GIS) that enhances mapping and spatial analysis with never-before-seen precision and efficiency and this cutting-edge technique produces incredibly accurate and detailed maps by fusing photogrammetric concepts, surveying and aerial images. What is Aerial Photography in Photogrammetry? Aerial photography in photogrammetry is a pivotal technique within …
A topographical survey is an intricate mapping procedure that records and depicts a landscape’s physical characteristics encompassing both natural and artificial components where making an accurate and thorough representation of the terrain’s surface is the main goal to facilitate precise spatial analysis and well-informed decision-making. Topographical surveys are essential foundations that offer priceless information for …
Land Use Land Cover Mapping – The term “land use” describes the uses and operations that are performed on a plot of land including commercial, industrial, agricultural and residential uses and in contrast, land cover refers to the biological and physical cover of the Earth’s surface including urban areas, agricultural fields, forests and water bodies. …
High-resolution satellite imagery obtained by Earth observation satellites allows for the detection and distinction of smaller objects and features on the surface of the planet and this type of photography is known as high-resolution satellite imaging. A crucial factor in determining an image’s level of detail is its spatial resolution which is commonly expressed in …
Synthetic Aperture Radar SAR is an active remote sensing technology that utilizes microwave signals to acquire detailed and precise images of the Earth’s surface and unlike optical sensors that rely on sunlight, SAR operates independently of weather conditions and can capture data day or night. The “synthetic aperture” refers to the creation of a virtual …
What is SAR data? Synthetic Aperture Radar Explained. Read More »
A collection of data points specified in three dimensions is called a point cloud. Concerning the physical world, every point in the cloud is uniquely identified by its X, Y and Z coordinates where these datasets are often gathered through the use of several remote sensing technologies such as photogrammetry or LiDAR (Light Detection and …
