I would look to a java solution.  I am sure there is something within the
Java Image (I think that is the name of it...or be what I named the object
when I created it...been a long day... hehehe)that is capable of comparison.

-----Original Message-----
From: Phillip Vector [mailto:vec...@mostdeadlygame.com] 
Sent: Monday, January 09, 2012 10:04 AM
To: cf-talk
Subject: Re: How to compare images programmatically


Hrm..

Most software that allows uploads can also set the filename to the time and
date it was taken. Have you tried this? If so, I presume then that the
filenames stay the same as it doesn't take a new picture?

On Mon, Jan 9, 2012 at 7:54 AM, Mike Kear <afpwebwo...@gmail.com> wrote:
>
> Thanks for all your helpful responses ...
>
> @phillip:    The symptom we get is that images are uploaded every 30 
> seconds ok, but at some point during the day instead of uploading new 
> images, it uploads the same image again and again.   The problem is 
> with the computer that's providing the images, not coldfusion or the 
> web server, but what we're trying to pin down is exactly when this 
> occurs, so we can look at what's happening in our network at that time 
> to cause the software to hang.
>
> We know the web server's working ok, and we know the ftp server's 
> working ok.   The images are identical, but with different creation 
> times.   So that means we're getting 'new' images every 30 seconds, 
> but at some time in the day instead of the content being a new 
> snapshot from the broadcast studio, it's the same snapshot being 
> uploaded again and again.    If we can learn that the software hangs 
> at (say) 2.17am, we can look at what happened around the station at 
> 2.17am and work out what's causing the problem - either human or IT based.
>
> That's why we want to pin down at what exact time (plus or minus a few
> minutes) do the images uploaded stop changing each time.   I want to 
> compare this current image, with the last one that was uploaded - 
> about 30 seconds ago,  and see if the image content is the same or not.
>
> So in short, we know the ColdFusion and web aspects of this 
> functionality are working ok, but we want to use it to trace back in 
> our system and see where/when the webcam software is going haywire.
>
> Cheers
> Mike Kear
> Windsor, NSW, Australia
> Adobe Certified Advanced ColdFusion Developer AFP Webworks 
> http://afpwebworks.com ColdFusion 9 Enterprise, PHP, ASP, ASP.NET 
> hosting from AUD$15/month
>
>
> On Tue, Jan 10, 2012 at 2:38 AM, Phillip Vector
> <vec...@mostdeadlygame.com>wrote:
>
>>
>> This may seem like a stupid question, but what do you mean exactly 
>> that the webcam hangs? You mean the software.. right?
>>
>> If it's the software that hangs (since hardware can't really hang), 
>> that means it doesn't upload a file or is it a different FTP program 
>> that does it?
>>
>> You could always set up something on cfschedule to check the most 
>> recent file and see if the time changed on it..
>>
>>
>
>
> 



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