CAD Overlay on Pix4Dcloud Advanced

 
Important:
  • The Overlay feature is only available on Pix4Dcloud Advanced.
  • The Overlay feature supports PDF (georeferenced or not), JPEG, JPG and PNG files.
  • Multiple CAD files can be uploaded and overlaid in a single project.

The Overlay tool allows the user to easily import and overlay design plans and maps on 2D orthomosaics in Pix4Dcloud Advanced. With the Overlay tool, the as-built can be quickly compared with the as-designed to easily check progress and identify as-built errors.

To use the Overlay tool

1. On the left panel, in correspondence with the Overlays layer, click add.png.
2. The wizard Import overlay opens. To upload a file either select Upload file and browse to the file or drag and drop the file.

 
Note: Ensure the file has a PDF (georeferenced or not), JPEG, JPG or PNG format and a high resolution for smooth display and zooming.

3. (Optional) If required, the uploaded file can be replaced by selecting Replace file.
4. A preview of the file is displayed.
5. Click Next to continue.
6. Define two points of reference on your plan, placing the blue and red markers on the image by drag-and-drop. To place markers more precisely or check the markers' placement:

  • Zoom in by scrolling the mouse scroll wheel forwards.
  • Zoom out by scrolling the mouse scroll wheel backward.
  • Pan by holding down the mouse left button.

7. Once the two markers are identified, select Next to align the uploaded file on the 2D map.
8. Align the imported Overlay by dragging the two markers to the same points of reference on the 2D orthomosaic. Match red to red and blue to blue.
It is also possible to manually edit the coordinates of the markers using the Site system coordinates of each marker.

Note:
  • Markers coordinates are based on the project coordinates.
  • If a georeferenced PDF is uploaded, the coordinates are automatically placed in, using the coordinates of the PDF.
  • Hit Reset to go back to the coordinates of the markers loaded by default.

9. Once each marker is in the correct position, select Complete to finalize the Overlay process and to return to the project page.

new_overlay.png

10. The imported Overlay appears on the left panel, within the Overlays layer. It may take a few minutes to process.

 
Note:
  • To enable large image upload without altering the user navigation, Pix4Dcloud Advanced generates tiles from the uploaded file. This may imply that processing can take a few minutes, depending on the size of the file.
  • A processing icon will be displayed during the tiling process.

11. (Optional) Existing Overlays can be re-positioned or replaced by clicking edit.png next to them on the left panel.

 
Important: Once the Overlay is added to a dataset within a Site, it will be shared with all datasets within the same Site. If the position of an Overlay is edited, it will be edited on all datasets within the Site. If an Overlay is deleted, it will be deleted on all datasets within the Site.

12. (Optional) The Overlay name can be changed, descriptions and tags can be added to the layer and its opacity adjusted. These changes won't be reflected in the other datasets of the Site.
13. (Optional) Multiple Overlays can be added to the same Site. To do so, repeat from step 1.

 
Note: If multiple files are uploaded, they can be reordered by drag-and-drop.
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