Last Updated by Paolo Marcuccetti on 2025-05-28
1. Plumb-Bob is a perspective rectifier useful in many fields: architectural survey, building renovation, furnishing design, estate agents, and it represents a real completion for the metric / photographic survey.
2. Once you have made the rectification, Plumb-Bob knows the parameters needed to know to convert every point on the image in real world coordinates.
3. These points have to lay on the same plan we want to survey and they have not to be on the same line (not collinear).
4. With Plumb-Bob you are able to transform an usual picture in a plan view.
5. Plumb-Bob provides also a tool for correcting lens distortion (an aberration that causes straight lines to curve).
6. A picture not too big (2 MegaPixels are enough), where 4 known key points are clearly visible.
7. The real coordinates of the 4 key points.
8. The algorithm can use correction parameters, for a large number of lenses, from the Lensfun database ( ), which is included in the software.
9. It is sufficent to know 4 key points of the plan to rectify.
10. As result you get a rectified image you can use as template in your CAD application, in order to retrace the drawing.
11. The more distant the points are and the less will be the margin of error.
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Or follow the guide below to use on PC:
Select Windows version:
Install Plumb-Bob app on your Windows in 4 steps below:
Download a Compatible APK for PC
Download | Developer | Rating | Current version |
---|---|---|---|
Get APK for PC → | Paolo Marcuccetti | 1 | 4.0 |
Get Plumb-Bob on Apple macOS
Download | Developer | Reviews | Rating |
---|---|---|---|
Get $4.99 on Mac | Paolo Marcuccetti | 0 | 1 |
Download on Android: Download Android
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What a fabulous idea
Nice for careful alignment of document scans if you have good reference points