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Add distortion example images for calib3d documentation.

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catree 2016-10-09 20:35:58 +02:00
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modules/calib3d/include/opencv2/calib3d.hpp
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@ -118,6 +118,10 @@ v = f_y*y'' + c_y
tangential distortion coefficients. \f$s_1\f$, \f$s_2\f$, \f$s_3\f$, and \f$s_4\f$, are the thin prism distortion tangential distortion coefficients. \f$s_1\f$, \f$s_2\f$, \f$s_3\f$, and \f$s_4\f$, are the thin prism distortion
coefficients. Higher-order coefficients are not considered in OpenCV. coefficients. Higher-order coefficients are not considered in OpenCV.
The next figure shows two common types of radial distortion: barrel distortion (typically \f$ k_1 > 0 \f$ and pincushion distortion (typically \f$ k_1 < 0 \f$).
![](pics/distortion_examples.png)
In some cases the image sensor may be tilted in order to focus an oblique plane in front of the In some cases the image sensor may be tilted in order to focus an oblique plane in front of the
camera (Scheimpfug condition). This can be useful for particle image velocimetry (PIV) or camera (Scheimpfug condition). This can be useful for particle image velocimetry (PIV) or
triangulation with a laser fan. The tilt causes a perspective distortion of \f$x''\f$ and triangulation with a laser fan. The tilt causes a perspective distortion of \f$x''\f$ and