CameraCaliberation example computes NAN
I am using OpenCV 3.2.0's example project for achieving CameraCalibration. I have a chessboard checker printed which I use to check for a 4 x 6 pattern of checkers.
Here are my sample images: https://drive.google.com/open?id=1yq4StXabiu8UEBZVU2vdYlsKv-btkW9Y
The sample project is provided with the OpenCV Android SDK libraries. libraries directly from the OpenCV page: https://opencv.org/releases.html
or simply download the version (3.2.0) that I have attached a copy of it. am using: https://drive.google.com/open?id=1SpgKZLtjT5O14ISBc09ywk_Vle6ZthWi
To locate the sample project, select: opencv-3.2.0-android-sdk.zip > OpenCV-android-sdk > samples > camera-calibration
import the project camera-calibration. I have also attached the checkerboard sample images that I used with the project.
When I run the project, it computes NAN for (fx and fy) of the CameraMatrix as well as (k1 and k2) of the DistortionCoefficients.
Any advice would be greatly appreciated.
Thanks,
Helia