Altami Software - software for image analysis
Altami Software
Software for image analysis

8.5.7 Black Hat transformation

The filter subtracts the original image from the closed one (“Black Hat” transformation). In fact, it shows areas which are darker than others and is used for their isolation.

Filter Black Hat transformation is suited to marking the details in halftone images, for example, by restoring the images, etc. You can use Top Hat and Black Hat transformations together for increasing the contrast.

Filter parameters:

  • Size;
  • Iteration.

Size (size) parameter determines the area of filter influence around each point.

Iteration (iteration) parameter determines the amount of iterations.


Altami software products work under the most popular modern operating system such as Windows, Linux и Macintosh.

Need to develop?

If our products do not solve your problems, we are ready to develop "from scratch" or modify existing applications.

USB 3.0

Tired of the slow camera work? Keep up with progress! The camera on USB 3.0! operates at a speed of up to 180 fps.