HistEQ

Alters the histogram of the input image to be flat. This process is called histogram equalization. It can be useful for increasing the contrast in an image, for example, if the background and foreground in the image are both bright or both dark.

Inputs and Controls

Connection Type

Connection Name

Function

Input

unnamed

The image sequence to equalize.

Control (UI)

Knob (Scripting)

Default Value

Function

HistEQ Tab

Histogram Entries

histeqbins

4096

Adjust the number of entries in the histogram.

mask

N/A

disabled

Enables the associated mask channel to the right. Disabling this checkbox is the same as setting the channel to none.

maskChannelInput

none

The channel to use as a mask. By default, the color correction is limited to the non-black areas of this channel.

invert mask

invert_mask

disabled

Inverts the use of the mask channel so that the color correction is limited to the non-white areas of the mask.