pimsviewer 1.0

Starting the viewer

You can start the viewer as follows:

from pimsviewer import Viewer
viewer = Viewer()
viewer.show()

Optionally you may include a reader:

import pims
from pimsviewer import Viewer
viewer = Viewer(pims.open('path/to/file'))
viewer.show()

Example: evaluating the effect of a processing function

This example adds a processing function that adds an adjustable amount of noise to an image. The amount of noise is tunable with a slider, which is displayed on the right of the image window.

import numpy as np
import pims
from pimsviewer import Viewer, ProcessPlugin, Slider

reader = pims.open('path/to/file')

def add_noise(img, noise_level):
    return img + np.random.random(img.shape) * noise_level / 100 * img.max()

AddNoise = ProcessPlugin(add_noise, 'Add noise', dock='right')
AddNoise += Slider('noise_level', low=0, high=100, value=10,
                   orientation='vertical')
viewer = Viewer(reader) + AddNoise
viewer.show()

Example: annotating features on a video

This example annotates features that were obtained via trackpy onto a video.

import trackpy as tp
from pimsviewer import Viewer, AnnotatePlugin
reader = pims.open('path/to/file')
f = tp.batch(reader, diameter=15)
(Viewer(reader) + AnnotatePlugin(f)).show()

Example: selecting features on a video

This example annotates features on a video, allows to hide and move features, and returns the adapted dataframe.

import trackpy as tp
from pimsviewer import Viewer, SelectionPlugin
reader = pims.open('path/to/file')
f = tp.batch(reader, diameter=15)
f = tp.link_df(f, search_range=10)
viewer = Viewer(reader) + SelectionPlugin(f)
f_result = viewer.show()

Example: designing a custom plotting function

This dynamically shows the effect of tp.locate.

import trackpy as tp
from pimsviewer import Viewer, Slider, PlottingPlugin

def locate_and_plot(image, radius, minmass, separation, ax):
    f = tp.locate(image, diameter=radius * 2 + 1, minmass=minmass,
                  separation=separation)
    if len(f) == 0:
        return
    return ax.plot(f['x'], f['y'], markersize=15, markeredgewidth=2,
                   markerfacecolor='none', markeredgecolor='r',
                   marker='o', linestyle='none')

reader = pims.open('path/to/file')
Locate = PlottingPlugin(locate_and_plot, 'Locate', dock='right')
Locate += Slider('radius', 2, 20, 7, value_type='int', orientation='vertical')
Locate += Slider('separation', 1, 100, 7, value_type='float', orientation='vertical')
Locate += Slider('minmass', 1, 10000, 100, value_type='int', orientation='vertical')
viewer = Viewer(reader) + Locate
viewer.show()