# Commands

## Image processing

Image processing commands work on [image planes](image-planes) manipulating the input image plane and forwarding the newly image to the command output.
ImageC provides a set of image processing algorithm for different use cases.

In general, image preprocessing serves to minimize the image noise as far as possible (maximizing the signal-to-noise ratio) in order to enable separation between the background and the signal.
An [object segmentation command](commands-object-segmentation) is issued after the image preprocessing.

:::{hint}
Image processing commands get an image as input and have a manipulated image as output.
:::

:::{toctree}
:maxdepth: 3

command_color_filter
command_rolling_ball
command_blur
:::

(commands-object-segmentation)=
## Object segmentation

The aim of object segmentation is to convert a grey-scale image into a binary image in such a way that all background areas are converted to black and all areas of interest are converted to a value other than black.

:::{toctree}
:maxdepth: 3

command_threshold
:::