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from ipywidgets import IntSlider


    

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slider = IntSlider()


    

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slider


    

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slider.value


    

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slider.value = 20


    

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slider


    

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from ipywidgets import Checkbox


    

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checkbox = Checkbox(description='Check me')
checkbox


    

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checkbox.value


    

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checkbox.value = False


    

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from ipywidgets import IntText, IntSlider, link, HBox


    

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text = IntText()

slider = IntSlider()

link((text, 'value'), (slider, 'value'))
HBox([text, slider])


    

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from ipywidgets import ToggleButton


    

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button = ToggleButton(description='Click me!', button_style='danger')

def update_style(change):
    button.button_style = 'info' if change['new'] else 'danger'

button.observe(update_style, 'value')
button


    

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from ipywidgets import ColorPicker, DatePicker, IntProgress, Play, VBox, link


    

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progress = IntProgress()
play = Play()
link((play, 'value'), (progress, 'value'))

VBox([ColorPicker(value='red'), DatePicker(), progress, play])


    

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from ipywidgets import Image

import PIL.Image
import io
import numpy as np
from skimage.filters import sobel
from skimage.color.adapt_rgb import adapt_rgb, each_channel
from skimage import filters


    

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image = Image.from_file("src/marie.png")
image


    

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im_in = PIL.Image.open(io.BytesIO(image.value))
im_array = np.array(im_in)[...,:3]
im_array


    

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im_array_edges = adapt_rgb(each_channel)(sobel)(im_array)
im_array_edges = ((1-im_array_edges) * 255).astype(np.uint8)
im_out = PIL.Image.fromarray(im_array_edges)
f = io.BytesIO()
im_out.save(f, format='png')
image.value = f.getvalue()


    

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from ipywidgets import Video, Image
from IPython.display import display
import numpy as np
import cv2
import base64


    

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video = Video.from_file('src/Big.Buck.Bunny.mp4')
video


    

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cap = cv2.VideoCapture('src/Big.Buck.Bunny.mp4')

frames = []

while(1):
    try:
        _, frame = cap.read()

        fgmask = cv2.Canny(frame, 100, 100)

        mask = fgmask > 100
        frame[mask, :] = 0

        frames.append(frame)
    except Exception:
        break

width = int(cap.get(3))
height = int(cap.get(4))

filename = 'src/output.mp4'

fourcc = cv2.VideoWriter_fourcc(*'avc1')
writer = cv2.VideoWriter(filename, fourcc, 25, (width, height))

for frame in frames:
    writer.write(frame)

cap.release()
writer.release()

with open(filename, 'rb') as f:
    video.value = f.read()


    

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from ipywidgets import Widget
Widget.close_all()