Grihayan Limited PHOTOGRAMMETRY Photogrammetry Survey in Bangladesh

Photogrammetry Survey in Bangladesh

A Comprehensive Guide to Photogrammetry: The Tech of 3D Modeling and Mapping

Photogrammetry allows you to capture and analyze the geometry of real-world objects, such as a person or an object. The process also involves measuring the dimensions of that object. With Photogrammetry, you can create 3D models and maps from photographs. To perform Photogrammetry, you need an imaging device with multiple sensors (for example, a camera with a telephoto lens). It is important to note that aerial surveys are different from Photovidegraphy. While photography enables you to take pictures, Photogrammetry captures data from those pictures. In this article, we will look at some common applications of Photogrammetry and its subfields. Additionally, we will explore how Photogrammetry works and how it can be used for data capture in various fields such as architecture, agriculture, archaeology, construction, forestry, geodesy and many more…

Why is Photogrammetry Important?

Photogrammetry is an important technology for the following reasons: – Capturing the shape of objects – Photogrammetry allows you to capture the shape of objects in the real world to create accurate 3D models. You can use this technology for mapping buildings, monuments, and other objects. – Capturing the texture of objects – Photogrammetry also allows you to capture texture information from real-world objects. You can then use this information to texture your 3D model. – Accurate measurements – Photogrammetry also allows you to record accurate measurements of real-world objects. The technology can be used to measure the length and width of a building or the width of tree trunks. – Collecting data for large areas – Photogrammetry is a good alternative to aerial photography for mapping large areas. You can use it to create high-resolution 3D models and maps of large areas such as cities. – Capturing data in low-visibility conditions – Photogrammetry can also be used to capture data in low visibility conditions such as forests and underwater.

How Does Photogrammetry Work?

Photogrammetry is used to take measurements of real-world objects by capturing images. For Photogrammetry, you need to take multiple photos at different angles. The more images you take, the higher the precision of your results. – For example, let’s say you want to measure the height of a building. You can start by taking a picture of the building from the ground level. Next, you can take another picture of the building from a higher vantage point using a long-range camera. – Once you have captured images of the building, you can create a 3D model using these images. You can use specialized computer software to process the imagery. – The software will identify the points on the images where they overlap. It will then use these points to create a digital model of the building. – The software will also calculate the distance between each image by looking at the direction that each image was pointing.

Overview of 3D Modeling using Photogrammetry

– A 3D model of an object can be created by combining images with different perspectives and camera positions. – Many different techniques exist for creating a 3D model from images. – The main 3D modeling techniques used in Photogrammetry are: – The data collected from Photogrammetry can be used to create a 3D model with varying levels of detail. – High-quality 3D models created from Photogrammetry can be used to create virtual environments, animations and visualizations.

Overview of Mapping Using Photogrammetry

– When creating a map using Photogrammetry, you first capture photos of the area of interest. – You can then process the photos to create a map that shows the location of different features in the real world. – The features can include buildings, trees, roads, and rivers. – Depending on the level of detail required, you can create different types of maps. – You can create a topographic map that shows features such as mountains, valleys, and rivers. – You can also create a cadastral map that shows the boundaries and land ownership. – A hydrographic map can show bodies of water, such as lakes and rivers. – Finally, a photo mosaic can be used to create a high-resolution map of an area. – A photo mosaic is created by stitching together several images to form a single image.


Photogrammetry is an important technology that allows you to create 3D models and maps of real-world objects. It captures the geometry and texture of real-world objects by taking multiple images at different angles using photographing equipment. The data collected from Photogrammetry can be used to create high-resolution 3D models and maps of real-world objects. It can be used to create accurate measurements and maps of large areas.

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