Keywords: front-page

# Image Overlaying I

[Laboratory]

Overlaying a line-grid on top of an image is a very common operation. Image A is a 8x8 image expanded by a factor of 20 using pixel replication. The grid is built using the negation of the maximum of a vertical grid and a horizontal grid:

Zoomed Image

a)Vertical Grid; b)Horizontal Grid
a) | b)

a)White Grid: Maximum between Vertical and Horizontal Grids; b)Black Grid: 255 - White Grid (Negation)
a) | b)

Minimum between Zoomed Image and Black Grid

- Lab: Image Overlaying I
- Other Examples