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Re: area threshold [message #94383 is a reply to message #94381]

Tue, 02 May 2017 22:55

gunvicsin11
Messages: 93
Registered: November 2012

Member

On Tuesday, May 2, 2017 at 2:53:16 PM UTC+5:30, Nikola Vitas wrote:
> On Monday, May 1, 2017 at 11:37:55 AM UTC+1, gunvi...@gmail.com wrote:
>> On Monday, May 1, 2017 at 3:29:49 PM UTC+5:30, Nikola Vitas wrote:
>>> On Monday, May 1, 2017 at 9:00:01 AM UTC+1, sid wrote:
>>>> hi all,
>>>> can anyone give some ideas for giving area threshold. Right now I am using
>>>> label_region, histogram and array_indices. Inorder to discard a region which is of n x n pixel area. But in this method some pixels are left without discarding and if I go for higher pixel area then the useful data also gets discarded.
>>>> Therefore anyone has any better idea for area thresholding.
>>>> thanks
>>>
>>> How is your n x x patch defined? By the values it contain or by position in a bigger image?
>>>
>>> Anyway, check for the logical operators, EQ, NE, GT, LT and similar and for the function WHERE. It's all in the IDL help files including useful examples.
>>
>> My n x n patch are defined by a position in a bigger image.
>
> You should specify your problem more specifically. What do you want to get as a result? Some statistics of the rest of the image or you just need to display the image with this patch masked out.

I have got a binary image in that the region which is less than 10 x 10 pixels has to be discarded or shud be made zero from the patch. I want to estimate the total area of the rest of the region of the patch.

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[Message index]

		area threshold By: gunvicsin11 on Mon, 01 May 2017 00:59
		Re: area threshold By: Nikola on Mon, 01 May 2017 02:59
		Re: area threshold By: gunvicsin11 on Mon, 01 May 2017 03:37
		Re: area threshold By: Nikola on Tue, 02 May 2017 02:23
		Re: area threshold By: gunvicsin11 on Tue, 02 May 2017 22:55
		Re: area threshold By: Helder Marchetto on Wed, 03 May 2017 05:55
		Re: area threshold By: Dick Jackson on Wed, 03 May 2017 09:04
		Re: area threshold By: gunvicsin11 on Mon, 08 May 2017 03:52
		Re: area threshold By: Dick Jackson on Mon, 08 May 2017 09:37
		Re: area threshold By: gunvicsin11 on Tue, 09 May 2017 03:45

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