Remote sensing comes into play when there is a need for large-scale digital interpretation likes forest stock estimation, forest density mapping, biodiversity and land use mapping followed by change detection over large geo-graphics. Each of these mappings is carried out with the help of a remote sensing data supported with ground truth information using a GPS data. This entire technique is broadly classified into two major types, which are as follows:
It is the science of making measurements from photographs. The digital Photogrammetry works by taking many images from different locations with the help of a standard digital camera or even your smartphones, which are then processed using programs in order to determine the exact location from where these pictures were taken. This outcome is typically a map, drawing, measurement or a 3D model of a real-world object or site. Today, most of the maps which we use are prepared with this technique, where photographs are taken from the aircraft and using special software this imagery is processed into 3D models. Without a doubt, it is the best way to get a better visual representation of textures
Coming over to LIDAR, it stands for Light Detection And Ranging, is a surveying technology that is used for measuring a distance by illuminating a target with laser light.Known for collecting highly accurate latitudinal and longitudinal measurements, this technique is very useful in making high- resolution aerial maps. Ideal for mapping both natural and manmade features, it can produce more accurate shoreline maps and can make digital elevation models to be used in geographic information systems, Digital Terrain Model and Digital Surface Model etc.
In this process, automatic measurement of tie points and interactive measurements of control points is taken with the help of photographs clicked in a different orientation and in an overlapping of the same area. With aerial triangulation in aerial photogrammetry we might be able to calculate 3-dimensional coordinates for object elements on almost any object. We need at least some points with known position that are visible in at least some of the photographs. These points we call ground control points, or any control points, the control points have to be a part of the aerial triangulation. We are using Orima, Match-AT,ISST for correlation as per clients requirement
Our Company can help you create fully detailed digital terrain models for Orthophoto rectification, contour generation, and digital elevation models for specialized applications. We will help you in mapping high-resolution digital representation of ground topography and terrain.
In many cases, you may need to convert a DEM from a digital surface model (DSM) to a digital terrain model (DTM). A DSM represents the elevation surface, including objects, such as buildings and trees, whereas a DTM represents a bare-Earth elevation surface. For this reason, using a DTM to perform orthorectification generally produces better results. However, a DEM extracted from overlapping images is a DSM; it first should be converted to a DTM, and then edited before using it for orthorectification.
You can use a bitmap or vector mask to identify specific areas of the DEM you want to edit. The mask itself does not change the values in the area that it covers: use the tools available in the DEM Editing window to modify the data under the mask.
There are certain processes which are following before deliveries.
If you are looking for consistency, unmatched quality, and timely delivery then we can be of great help to you. Our team of experienced cartographers will execute accurate stereo data compilation of the Planimetric features according to your satisfaction. We use the combination of imagery processing techniques for extracting the accurate data features for you.
The objective of Planimetric collection is preparation of base map for different applications with complete, accurate and correct feature coded data set in full compliance to the project specification. We implement extensive stereo-data compilation skills, combined with customized tools, providing excellent accuracy, completeness and correct coding of digital vector data. We provide the collected Planimetric data in a wide range of industry standard output formats. Main categories of features usually captured by us are Structures, Transportation, Hydrographic, Vegetation, Utility and Hypsographic & Others. Our stereo data compilation extends into different scales of film based, digital photographs and high resolution satellite images.
Our Planimmetry Services include
We have proven our expertise in providing the highest quality orthophoto production services and are capable of meeting any large scale requirements irrespective of the topography, in a way, ensuring you smooth operations and reliable results.
As well as Orthorectification allows elements such as roads, plan views of buildings, railway lines, woodland, rivers and lakes etc. to be accurately positioned in two-dimensional maps. Digitization and analysis then means different cartographic layers and filters can be applied with consistent scale and geometry.
Our Orthophoto generation Services include
Our range of comprehensive processing offerings can support all LIDAR platforms. By using the latest LIDAR processing software and our extensive project experiences, we will meet your project deadlines in the fastest turnaround times. LiDAR classification and Vectorization staffs. LiDAR technology for Powerline corridor mapping is widely accepted as compared to the conventional techniques. LiDAR technology has proved to be highly accurate and reliable in mapping corridors in complex terrains.
LiDAR Classifications terms:-
• Transmission lines
• Towers (tower top and tower base)
• Road and railway lines
• Signs and sign boards
• Poles and masts including their wires and other categorized wires
• Other structures (Objects like Temp structures, structural Pylons etc.)
• Major and minor water bodies
• Low, medium and high vegetation
• Falling trees
We deliver next-generation solutions for automatic point cloud classification and feature extraction. From classifying vegetation, building roofs to ground points, the unique ability of our workflow will automatically classify point clouds with high accuracy.
With our classified cloud modeling solutions you can now visualize, process, classify, segment, animate, and edit Point clouds in one single software, which will allow you to work with your Point Clouds in one single file.
At Fervent Technologies, we seamlessly integrate LIDAR data with other data sets for producing complex geomorphic-structure mapping products, earthwork profiles, and a range of other high-value mapping products.
The complex science of studying the geographical features and terrains need an expert for simplifying the concepts. And, we at Fervent Technologies lead the way when it comes to advanced contour mapping with LIDAR. Our expertise in Spatial Technology and Geographic Information Systems will deliver you reliable geospatial solutions.
We are a trusted source for your 3D modeling solutions using the LIDAR technology, which aims at maximizing your efficiencies and improving your process. Let us partner you in creating accurate master plans and helping you to perform analysis of your chosen environment. A comprehensive survey on 3D building modeling& meshing that contains methods from all these fields will be beneficial. This term attempts to survey the state-of-the-art 3D building modeling methods in the areas of photogrammetry, computer vision, and computer graphics. The existing methods are grouped into three categories: 3D reconstruction from images, 3D modeling using range data, and 3D modeling using images and range data. The use of both data for 3D modeling is a sensor fusion approach, in which methods of image-to-LiDAR registration, up sampling, and image-guided segmentation are reviewed. For each category, the key problems are identified and solutions are addressed.