User:KCote/sandbox

This is the user sandbox of KCote. A user sandbox is a subpage of the user's user page. It serves as a testing spot and page development space for the user and is not an encyclopedia article. Create or edit your own sandbox here.

Other sandboxes: Main sandbox | Template sandbox

Finished writing a draft article? Are you ready to request review of it by an experienced editor for possible inclusion in Wikipedia? Submit your draft for review!

Filter type	Kernel or mask	Example
Original Image	${\begin{bmatrix}0&0&0\\0&1&0\\0&0&0\end{bmatrix}}$
Mean filter	${\frac {1}{9}}\times {\begin{bmatrix}1&1&1\\1&1&1\\1&1&1\end{bmatrix}}$
Laplacian	${\begin{bmatrix}0&-1&0\\-1&4&-1\\0&-1&0\end{bmatrix}}$
Fourier Representation	align="left"	MATLAB Script:	img=checkerboard(size);	F=fft2(img);	F=fftshift(F);	imshow(log(1+abs(F)))	File:Affine Transformation Rotated Checkerboard.jpg
Shear	${\begin{bmatrix}1&c_{x}=0.5&0\\c_{y}=0&1&0\\0&0&1\end{bmatrix}}$	File:Affine Transformation Shear Checkerboard.jpg

References

Berger, Marcel (1987), Geometry I, Berlin: Springer, ISBN 3-540-11658-3