.. _CameraCalibrationSettingsWidget:

Camera Calibration Settings
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This widget allows specifying parameters for camera calibration.

The checkbox **Fix principal point** - specifies whether the principal point should remain unchanged during the calibration (stays in the image center if no initial intrinsics provided).

**Fix aspect ratio** - the ratio fx/fy stays the same as in the initial intrinsics.

**Fix radial k1**, **Fix radial k2**, **Fix radial k3** - the corresponding radial distortion coefficient is not changed during the calibration.

**Zero tangential distortion** - tangential distortion coefficients (p1,p2) are set to zeros and stay zero.

**Recalibrate with inliers** - specifies whether calibration should be re-run with images that have per-frame MRE smaller than the one specified in **Max reprojection error**.

**Auto select images** - if selected a subset of images will be automatically selected, instead of using all images.

**Max reprojection error** - specifies maximum reprojection error for inliers to use in recalibration when **Recalibrate with inliers** is enabled.

**Min detections** - minimum number of detected points per image required to use image for calibration.

**Max selected images** - maximum number of images to select when **Auto select images** is enabled.