📑 File Exchange Workout 01. Image Processing

file_exchange_01.html

Image Processing

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import warnings; warnings.filterwarnings('ignore')

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from skimage import io,color,measure

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@interact

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def _vector(file=slider([1,2,..,24],default=16),

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            cm=slider(['ocean','cool','hsv','gnuplot2',

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                       'terrain','flag','winter','spring',

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                       'summer','autumn'],default='hsv'),

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            level=slider([round(.9-.03*i,2) 

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                          for i in range(15)],default=.81)):

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    file_path='https://raw.githubusercontent.com/'+\

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              'OlgaBelitskaya/data/main/decors/'

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    file_name='00_00_%03d'%(file)+'.png'

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    img=io.imread(file_path+file_name); level=float(level)

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    gray_img=color.colorconv.rgb2gray(

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        color.colorconv.rgba2rgb(img))

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    contours=measure.find_contours(gray_img,level)

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    n=len(contours)

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    p=sum([list_plot(list(zip(contours[i][:,1],contours[i][:,0])),

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                     color=colormaps[cm](i/n)[:3],plotjoined=True,

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                     flip_y=True,alpha=.7) for i in range(n)])

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    g=multi_graphics([matrix_plot(img/255),p])

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    g.show(frame=False,axes=False,aspect_ratio=1,transparent=True,

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           xmin=0,ymin=0,xmax=img.shape[1],ymax=img.shape[0])

Language: Sage Gap GP HTML Macaulay2 Maxima Octave Python R Singular

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