DEM/DTM
The Digital Elevation Model (DEM) is a fundamental spatial dataset with numerous applications in geospatial surveys. Elevation information derived from DEM plays a crucial role in cadastral surveys, infrastructure planning, hydrological modeling, and environmental assessments.
DEM can be generated through photogrammetric techniques using stereo aerial images and high-resolution stereo images from satellites. Additionally, DEMs can be derived from Synthetic Aperture RADAR (SAR) images and LiDAR point clouds. It's important to note that the resolution and accuracy of DEMs vary depending on the method used.
SAR-based DEMs may not offer very high resolution, limiting their usability. On the other hand, generating DEMs from LiDAR point clouds has its own challenges, especially when dealing with vast areas.
Generating DEMs from stereo imagery, however, remains one of the most reliable methods to create seamless surface models of diverse terrains. Moreover, the constant and continuous coverage of the entire Earth's surface by very high-resolution stereo images enhances the availability and accessibility of valuable DEM data.
The advantage of DEM derived from stereo imagery lies in its seamless and continuous availability over vast areas, surpassing the DEM generated from aerial photographs and aerial LiDAR point clouds.
DEM created through stereo imageries exhibits exceptional vertical and horizontal accuracies, making it indispensable for watershed and hydrological modeling. Its applications extend to various fields, including Civil Engineering and Construction projects, RF Modeling in Wireless Communications, Military and Aviation Training & Simulation, Urban Planning, and Topographic Mapping.
Moreover, DEM from stereo imagery plays a crucial role in flood modeling and forecasting. Its elevation model, boasting utmost accuracy and precision, becomes particularly critical in flood modeling for low-lying regions susceptible to water accumulation. This aspect enhances the efficacy of flood mitigation and management strategies.
Our DEM products offer unparalleled accuracy and superior elevation information with extensive geographic coverage, making them ideal for meeting the diverse needs of critical projects. We take pride in delivering quick turnaround times without compromising on quality, ensuring that our multiple solutions not only cater to project requirements but also align with budget considerations.
As the demand for 3D models in smart cities and terrain models for natural resource management, disaster management, and planning continues to rise, our DEM from stereo imagery proves to be the ideal solution. Its coverage and accuracy perfectly suit the aforementioned applications.
Our team of experienced and quality-conscious image analysts excels in generating DEM from stereo imagery, customizing the results to meet both project specifications and our clients' preferences. The cost-effective DEM products boast high accuracy and extensive coverage, making them well-suited for use in cadastral surveys, infrastructure surveys, and utility surveys.
Three-dimensional viewing unveils intricate details that remain concealed in a 2D map. Beyond its visual appeal, 3D technology serves as a valuable tool for diverse professional analyses and applications, including watershed management, landslide hazard zonation, urban planning, and resource management.
At our disposal, we possess a skilled team dedicated to generating accurate 3D models using stereo images. Our comprehensive services encompass the generation of DEM from stereo imagery, ortho-rectification of images, 3D digitization, and the capture of contours at various intervals.
Leveraging topographic maps, GIS Consortium has successfully developed Digital Terrain Models (DTM), Digital Elevation Models (DEM), and Triangulated Irregular Network (TIN) to cater to the specific requirements of clients. Our expertise in 3D modeling and geospatial data ensures that we deliver results of the highest quality, meeting the diverse needs of our valued clientele.