An orthophotoplan is a geometrically accurate, two-dimensional map that you can create from photographic data. Their use is often essential for accurate spatial analysis in fields like urban planning, surveying, agriculture, and disaster management. Agisoft Metashape is a powerful software tool that can streamline this process, and here we can show you how.
Video Chapters:
Introduction - 00:01:10
Step 1 Add photos - 00:01:44
Step 2 Create masks - 00:02:11
Step 3 Align photos - 00:04:03
Step 4 Build a dense point cloud - 00:05:02
Step 5 Build a polygonal model - 00:06:15
Step 6 Create an Orthophotoplan - 00:07:30
Step 1: Add Photos
Import your photos into Metashape by navigating to Workflow - Add Photos or using the toolbar. Ensure your images are well-captured with significant overlap and complete coverage of the area you want to process.
Step 2: Create Masks
Masks are used to exclude unnecessary elements in the photos, such as the background or unwanted objects, which might interfere with the workflow. To create masks, go to Tools - Create Mask, and define the areas to exclude. This helps improve the precision of the alignment and subsequent outputs. Create masks for all the pictures.
Step 3: Align Photos
To establish the spatial relationships between the images, align them by selecting Workflow - Align Photos. This process generates a sparse point cloud that outlines the structure of the photographed area.
Step 4: Build a Dense Point Cloud
Refine the sparse point cloud into a dense point cloud for greater detail. Use Workflow - Build Dense Cloud, and choose the quality settings based on your intended level of detail.
Step 5: Build a Polygonal Model
Convert the dense point cloud into a 3D surface by creating a mesh. This step involves selecting Workflow - Build Mesh. Choose the source data (e.g., dense cloud) and the surface type for the model.
Step 6: Create the Orthophotoplan
To create an orthophotoplan, the processed data is projected onto a flat plane. Once the orthophotoplan is generated, we advise you to review the result to ensure accuracy and quality. Make any necessary adjustments to the projection or resolution before exporting it in the required format for analysis or presentation.
Now, you can efficiently create high-quality orthophotoplans for various applications, such as mapping, surveying, or construction planning. Contact us at sales@general-laser.at to get a license.
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