NetModel
ImageColorSpace
ColorCombine
ColorNegate
SetAlphaChannel
ImageApply
Colorize

Image Processing
Life Sciences

Colorize Electron Microscopy Images

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Train neural networks to automatically colorize monochrome electron microscopy images

Load a neural network for image colorization from the Wolfram Neural Net Repository:

In[1]:=

net=NetModel["Colorful Image Colorization Trained on ImageNet Competition Data"]

Out[1]=

NetChain



Input port:	image
Output port:	array (size: 2×56×56)



Implement a utility function to apply colorization to any grayscale image:

In[2]:=

addColor[img_Image/;ImageColorSpace[img]==="Grayscale"]:=ColorCombine[{img,ImageResize[Image[net[img],InterleavingFalse],ImageDimensions[img]]},"LAB"]

Consider an image of magnified chalk particles:

In[3]:=

img=

;

Colorize the image:

In[4]:=

cimg=addColor[img]

Out[4]=

Change the color scheme by rotating the Lab color space:

In[5]:=

AnimateWith[{R=RotationMatrix[φ,{1,0,0}]},ImageApply[R.#&,cimg]],{{φ,0},-π,π},

...



Out[5]=

Segment and colorize the image of a leaf-cutter ant's eye:

In[6]:=

antEye=

;

In[7]:=

colAntEye=addColor[antEye]

Out[7]=

Change the hue of the background:

In[8]:=

mask=

;

In[9]:=

background=SetAlphaChannel[With[{R=RotationMatrix[60°,{1,0,0}]},ImageApply[R.#&,colAntEye]],ColorNegate@Blur@mask]

Out[9]=

Combine foreground and background:

In[10]:=

ImageCompose[colAntEye,background]

Out[10]=

Related Symbols

NetModel
ImageColorSpace
ColorCombine
ColorNegate
SetAlphaChannel
ImageApply
Colorize

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Contributed by: Wolfram Staff

Wolfram Language Example Repository

Colorize Electron Microscopy Images

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