getDefaultNewCameraMatrix
import { getDefaultNewCameraMatrix } from '@banou/opencv-wasm'Use after await initOpenCV(). See the initialization and named imports guide.
Returns the default new camera matrix.
The function returns the camera matrix that is either an exact copy of the input cameraMatrix (when centerPrinicipalPoint=false ), or the modified one (when centerPrincipalPoint=true).
In the latter case, the new camera matrix will be:
\begin{bmatrix} f_x && 0 && ( \texttt{imgSize.width} -1)*0.5 \\ 0 && f_y && ( \texttt{imgSize.height} -1)*0.5 \\ 0 && 0 && 1 \end{bmatrix} ,
where f_x and f_y are (0,0) and (1,1) elements of cameraMatrix, respectively.
By default, the undistortion functions in OpenCV (see #initUndistortRectifyMap, #undistort) do not move the principal point. However, when you work with stereo, it is important to move the principal points in both views to the same y-coordinate (which is required by most of stereo correspondence algorithms), and may be to the same x-coordinate too. So, you can form the new camera matrix for each view where the principal points are located at the center.
getDefaultNewCameraMatrix(cameraMatrix: Mat, imgsize: Size, centerPrincipalPoint: boolean): Mat;3 available overloads
getDefaultNewCameraMatrix(cameraMatrix: Mat): Mat;getDefaultNewCameraMatrix(cameraMatrix: Mat, imgsize: Size): Mat;getDefaultNewCameraMatrix(cameraMatrix: Mat, imgsize: Size, centerPrincipalPoint: boolean): Mat;cameraMatrixInput camera matrix.
imgsizeCamera view image size in pixels.
centerPrincipalPointLocation of the principal point in the new camera matrix. The parameter indicates whether this location should be at the image center or not.
The Mat result. Release returned native handles with using or delete(), including handles nested in results.
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