Equivalent ImageMagick <> Cloudinary unsharp mask values

Mike Wadhera

February 12, 2014 21:58

Hi, love the product!

I have a question regarding the unsharp transformation...

So I have an existing ImageMagick convert command that i'm bringing over to Cloudinary with an unsharp mask of:

-unsharp 2x0.5+0.5+0

For reference, the ImageMagick syntax for this is:

-unsharp Radiusx*Sigma+Amount+Threshold*

 

* What would be the equivalent unsharp mask option in the Cloudinary API?

* It looks as though only "amount" is available & it is on a different scale?

 

Thanks,

-Mike

 

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  Itay Taragano

  February 16, 2014 17:57

  Hi Mike,

  You can set the effect parameter to unsharp_mask ( e_unsharp_mask in URLs) to sharpen the image using the unsharp mask filter.

  The default values are:
  
  Radius - 0.0
  
  Amount - 1.0
  
  Threshold - 0.05

  Cloudinary supports customizing the sigma (level range: 1-2000, default level: 100), so that a 100 value is equivalent to ImageMagick's 1.0. 

  For example:
  
  http://res.cloudinary.com/demo/image/upload/c_fill,e_unsharp_mask:400,h_80,w_80/horses.jpg
  
  

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