by RT studios·VFX
Images © RT studios. Used for product review; image policy.
Stands out in the superhive library because it solves a camera pose from a single still picture using ground-truth 3D locations, rather than the vanishing points or parallel lines other perspective matching tools depend on.
Camera PnPoint brings a Perspective-n-Point solver to Blender's camera tracking workbench. PnP is the problem of estimating the pose of a calibrated camera from a given set of 3D points and their 2D projections in the image plane, and the add-on solves it directly inside Blender.
Alongside the pose solver, it includes a camera calibration solver that adjusts lens parameters such as focal length and radial distortion using projection data from 3D and 2D markers. Unlike other perspective matching tools, it does not require pictures with multiple vanishing points or objects with parallel lines. And unlike Blender's built-in camera motion solver, it relies on ground-truth 3D locations and needs only one still picture to find a camera pose.
The add-on uses the OpenCV library, which can be installed from its preference panel, though you may need to start Blender with elevated privileges for that to work. Reprojection error for the last solve is displayed, and the pose solver automatically sets up a camera with the resulting extrinsics, intrinsics, and background image. It is distributed under the GPL license.
Camera Pnpoint - Perspective Matching And Lens Calibration is best for blender artists matching a camera to a reference photo from known 3D point locations and calibrating lens parameters like focal length and radial distortion.
Camera Pnpoint - Perspective Matching And Lens Calibration is completely free to download and use.
Camera PnPoint lists compatibility with Blender 4.0, 3.6, 3.5, 3.4, 3.3, 3.2, 3.1, 3.0, and 2.93, so it covers a broad range of releases from 2.93 through the 4.0 series. The add-on is distributed under the GPL license. If you run a version outside this list, check the developer's page to confirm whether newer builds are supported before you install it.
Camera PnPoint uses the OpenCV library, which you can install directly from the add-on's preference panel inside Blender. Depending on your system, you may need to start Blender with elevated privileges for that installation to complete. Once OpenCV is in place, the pose and calibration solvers can run. If the install does not go through, launching Blender with elevated privileges is the documented step to try.
Camera PnPoint differs from Blender's built-in camera motion solver by relying on ground-truth 3D locations and requiring only one still picture to find a camera pose. It also sets itself apart from other perspective matching tools by not needing pictures with multiple vanishing points, or objects with parallel lines. Instead, it estimates the pose of a calibrated camera from a set of 3D points and their 2D projections in the image plane.
Camera PnPoint is listed as free in this catalog. Pricing and licensing can change over time, so check the developer's page on superhive for the current terms before you download. The add-on is distributed under the GPL license, which governs how you can use and modify it. For the most accurate and up-to-date details, the developer's page is the place to confirm.
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