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Re: Extracting average pixel value [message #66171]

Fri, 24 April 2009 02:53

jameskuyper
Messages: 79
Registered: October 2007

Member

Bennett wrote:
> On Apr 23, 1:00 pm, Bennett <juggernau...@gmail.com> wrote:
...
>> In IDL you can do a
>> newArray = CONVOL(imageArray, [[1,1,1],[1,0,1],[1,1,1]], /CENTER)
>> This will compute the average value in a 3x3 box around each pixel
>> (except
>> the edge pixels which you can set to zero or truncate or handle
>> separately...
>> whatever you please really. Who needs edges anyway, right?)
>>
>> Bennett
>
> I forgot to say also divide your resulting newArray by 8.

Alternatively, you could divide the array of weighting factors by 8.

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[Message index]

		Re: Extracting average pixel value By: jameskuyper on Fri, 24 April 2009 02:53
		Re: Extracting average pixel value By: Juggernaut on Thu, 23 April 2009 10:11
		Re: Extracting average pixel value By: Juggernaut on Thu, 23 April 2009 10:00
		Re: Extracting average pixel value By: GP on Mon, 04 May 2009 00:46

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