2.2.2.3. Pre-processing techniques for a chessboard image

Chessboard images are often used to calibrate commercial cameras rather than scientific cameras. To get reference-points, users can apply some corner-detection methods available in Scikit-image (Fig. 14 (a)(b)), or convert the image to a line-pattern image (Fig. 1(c)) and use the similar routine as described in section 2.2.2.2.

Fig. 14 (a) Chessboard image. (b) Points extracted using a corner-detection method. (c) Converted image from image (a).