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DPChallenge Forums >> Current Challenge >> Perspective Correction Legal?
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AuthorThread
 04/08/2005 07:00:11 PM · #1
For the 'Abandoned Buildings' challenge - under basic editing rules, is the use of Perspective Correction tool legal?

Thanks in advance.
Barry
 04/08/2005 07:01:25 PM · #2
I would think so as long as you select the entire image and not just a section.
 04/08/2005 07:13:38 PM · #3
I know it's legal under advanced rules, but I don't want to make an improper assumption for basic. To use the tool you need to position the grid against the vertical lines you want to correct. While it applies to the whole image you need to set it first.

Anybody from SC able to contribute to this thread please? Thanks.
 04/08/2005 07:14:25 PM · #4
Oops...and by the way Jen, thanks for the feedback. ;^)
 04/08/2005 07:17:13 PM · #5
I was told long ago that perpective correction in basic editing is not allowed. Check with the s/c
 04/08/2005 07:32:01 PM · #6
Barry - You're welcome.

I'm not 100% sure of the answer, but the rules state:

"Post-shot Adjustments may be made to your image in a photo editing program, so long as the modification is applied to the whole image."

It seems to me that if you select the entire image and then use the perspective tool you are within the rules.
04/08/2005 07:45:06 PM · #7
Originally posted by ButterflySis:
"Post-shot Adjustments may be made to your image in a photo editing program, so long as the modification is applied to the whole image."

It seems to me that if you select the entire image and then use the perspective tool you are within the rules.


Not that I care one way or the other, but this could still be subject to interpretation because you are not applying the resizing equally to the whole image.

Of course there will never be anything that is not subject to interpretation, but this issue seems easily resolved by a clear answer from the SC.

Message edited by author 2005-04-08 19:45:39.
 04/08/2005 07:47:40 PM · #8
It is NOT allowed:

From basic editing rules:
Spot-Editing: Absolutely no spot-editing is allowed. This includes, but is not limited to drawing tools, dodging/burning tools, and cloning tools. Additionally, the use of any type of selection tool is prohibited except to select a non-feathered, non-anti-aliased rectangular area for cropping.

To me Cropping is allowed but only rectangular not perspective.
04/08/2005 07:50:03 PM · #9
Originally posted by SDW65:
It is NOT allowed:

From basic editing rules:
Spot-Editing: Absolutely no spot-editing is allowed. This includes, but is not limited to drawing tools, dodging/burning tools, and cloning tools. Additionally, the use of any type of selection tool is prohibited except to select a non-feathered, non-anti-aliased rectangular area for cropping.

To me Cropping is allowed but only rectangular not perspective.


Technically you don't need to use the selection tool at all to adjust perspective or "Transform" (CTRL+T)
 04/08/2005 07:50:29 PM · #10
To me, perspective correction moves pixels, and thus would not be allowed.
 04/08/2005 07:52:00 PM · #11
I don't actually see perspective correction as something being applied to the whole image, although it does change the whole image informtion, you are aiming to change part of the image which doesn't look right to you.
 04/08/2005 07:53:11 PM · #12
This has been discussed many times, the answer unfortunately is a definite no. I'm all for getting this changed though.
 04/08/2005 08:04:12 PM · #13
Under basic editing it has been accepted that moving pixels is not acceptable,

generally, perspective adjustment involves the movement of pixels......
 04/08/2005 08:46:54 PM · #14
Considering the original poster (glad2badad) recently won a blue ribbon with an excellent entry, and in an effort to reduce the competition by whatever means necessary, I would say go ahead and do the perspective correction edit. I promise I won't click the DQ Request. ;-)
 04/08/2005 11:38:25 PM · #15
Originally posted by kpriest:
Considering the original poster (glad2badad) recently won a blue ribbon with an excellent entry, and in an effort to reduce the competition by whatever means necessary, I would say go ahead and do the perspective correction edit. I promise I won't click the DQ Request. ;-)

I recently PM'd a site council member about use of perspective and distortion correction tools in an open challenge. I thought that if the entire image was selected that it would be OK. The reply was to the contrary. Their use is prohibited in an open challenge. It has something to do with moving pixels.

Message edited by author 2005-04-08 23:38:44.
 04/09/2005 08:19:11 AM · #16
Cute one Ken. ;^) I think I'll err on the side of caution here (being the ruleset this time is basic) and rework the item I'm working on - the perspective correction didn't impact the image that much anyway. I'm just kind of a stickler for details sometimes.

Sorry for the late response - had a family movie night last night. :P

Originally posted by kpriest:
Considering the original poster (glad2badad) recently won a blue ribbon with an excellent entry, and in an effort to reduce the competition by whatever means necessary, I would say go ahead and do the perspective correction edit. I promise I won't click the DQ Request. ;-)


Message edited by author 2005-04-09 08:30:07.
 05/03/2005 08:42:40 AM · #17
So you never got a ruling?
 05/03/2005 08:45:55 AM · #18
SC has consistently said it is NOT allowed in Basic Editing. Whether that's technically a "ruling" I donno, but I sure wouldn't risk it.

Robt.
 05/03/2005 08:50:40 AM · #19
I reviewed an old SC discussion on the matter... there was strong consensus that perspective correction is not legal for basic editing.
 05/03/2005 10:04:33 AM · #20
Niten - I err'd on the side of caution and did not use any perspective correction. As for a ruling - I never inquired 'officially' to any SC members, and none happened to see this thread and responded.

I see kirbic's post and given a choice again today, I would not take a chance of using any perspective correction tool for a basic challenge.

Originally posted by Niten:
So you never got a ruling?
05/03/2005 10:15:03 AM · #21
Can you correct lens distortions for basic challenge?

Nick
05/03/2005 10:16:34 AM · #22
Same answer, "no". This involves changing the relationship of pixels to each other. It's been mentioned before, and SC says no.

Robt.
 05/03/2005 12:00:36 PM · #23
To re-iterate a post in another thread.

DPC needs to re-word the statement on basic challenges.

And state what they actually mean:

"Post-shot Adjustments may be made to your image in a photo editing program, so long as the modification is applied to the whole image."
[[[This confuses too many people....they should just specify...

The following post-shot adjustments (levels, conversion to black and white, hue/saturation, sizing/rotating, curves and cropping) may be used , so long as they are applied to the entire image. Excepting sizing/rotation, no effects/filters/adjustments which relocate, move or shift pixels are allowed.
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