ddd_pylib.image_manip.

FindExtremaOperator

class ddd_pylib.image_manip.FindExtremaOperator

Bases: MeasurementsOperator

Searches for the local extrema (minima or maxima) on an image. These extrema are filtered by prominence, which is a measure of how much an extremum stands out from its surroundings.

Note: The prominence is always positive.

If you are looking for local maxima, set blackBackground to True. If you are looking for local minima, set blackBackground to False.

Settable parameters:

• blackBackground (setBlackBackground) – If True, the operator will look for local maxima.

• prominence (setProminence) – The minimum prominence of a local extremum.

Produces:

result (getResult) –

The extrema as a list of coordinates bundled in a pd.DataFrame.

Each line is a point and each column is an axis.

Methods

static defaultBlackBackground()

Return type:

bool

static defaultProminence()

Return type:

float

getPrefix()

Prefix added to the input image name to generate the output image name.

Return type:

str

setBlackBackground(value)

Set the blackBackground attribute, which defines if we are looking for minima or maxima

Parameters:

value (bool)

setProminence(value)

Set the minimum prominence of a local extremum.

Parameters:

value (float | int)