slmsuite.holography.analysis.blob_detect

blob_detect(img, filter=None, plot=False, **kwargs)

Detect blobs in an image.

Wraps cv2.SimpleBlobDetector (see these links) Default parameters are optimized for bright spot detection on dark background, but can be changed with **kwargs.

Parameters:

• img (numpy.ndarray) – The image to perform blob detection on.

• filter ({"dist_to_center", "max_amp"} OR None) – One of dist_to_center or max_amp.

• plot (bool) – Whether to show a debug plot.

• title (str) – Plot title.

• fig (matplotlib.figure.Figure) – Figure for plotting.

• axs (list of matplotlib.axes.Axis or matplotlib.axes.Axis) – Axes for plotting.

• show (bool) – Whether or not to show the plot.

• **kwargs – Extra arguments for cv2.SimpleBlobDetector.

Returns:

• blobs (ndarray) – List of blobs found by detector.

• detector (cv2.SimpleBlobDetector) – A blob detector with customized parameters.