This function additively inverts the gray values of the input image into the output image. Bright pixels get darker and vice versa.

Parameter

Description

Operand

The gray values of the input image are subtracted from this value: output gray value = Operand - input gray value

Use 255 for the "standard negative" of the input image. A lower value reduces the overall brightness of the output image.

Values outside boundaries

The resulting pixel values cannot be outside the value range of the corresponding pixel type, e.g. for an 8 Bit B/W image, the values cannot fall below 0 or exceed 255.

If the resulting value lies outside the value range, it is set to the maximum or minimum value.