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Topic: Cropping image parts through list of lists
Replies: 2   Last Post: Mar 19, 2013 1:51 AM

 Messages: [ Previous | Next ]
 Vince Virgilio Posts: 135 Registered: 4/30/05
Re: Cropping image parts through list of lists
Posted: Mar 19, 2013 12:04 AM

On Wednesday, March 13, 2013 4:18:03 AM UTC-4, TDMF HT wrote:
> Newbie with OOP way of thinking, so bear with me :) Thank you !
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>
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> Given - list of lists:
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>
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> myList = { { {0,100},{50,100},{800,600} } , { {{100,100},{150,100},{1024,768} } }
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> Using the above list of lists, I want to crop two different parts from a single image an resize the resulting partial image in the following way;
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> Cropped image 1:
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> cropXY: 0,100/50,100
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> resize: 800,600
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> Cropped image 2:
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> cropXY: 100,100/150,100
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> resize: 1024,768
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> My OOP way of thinking tells me to iterate/loop over the outer and inner lists.
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> This doesnt seem to be the Mathematica way, so I spent the last couple of hours messing around with
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> DO/TAKE etc. and all image related functions.
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> I dont seem to find the right way to sequentially go over the inner lists and crop/resize the two parts from the single image.
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> Id really appreciate a few tips on how to get this done.
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> Thanks a bunch !!!!

Maybe

newImages = MapThread[ cropFunction, { img1, img2 }, { parm1, parm2 } ];

where

cropFunction[img_, { cropX_, cropY_, resize_}] := Module[{...}, newImage = ...; newImage ];

does the work.

Date Subject Author
3/19/13 Vince Virgilio
3/19/13 Barrie Stokes