Spot on forum header - Printable Version
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+----- Thread: Spot on forum header (/showthread.php?tid=53923)
Spot on forum header by haydos on 12-15-2005 at 03:51 PM
I only get the spot shown on the forum index and some other pages of the forum, including this one (the post a new thread page)
It doesnt appear on any other sites (so its not a bit of dirt on the screen
) and for some reason it only appears in firefox.
RE: Spot on forum header by absorbation on 12-15-2005 at 03:54 PM
I see no spot (firefox 1.5 1 024 by 1248 res) on all pages
RE: Spot on forum header by user27089 on 12-15-2005 at 03:54 PM
I can't see it on any of the pages on the forum 
...
RE: Spot on forum header by Jhrono on 12-15-2005 at 03:59 PM
Nope, opera 8.5 here
RE: Spot on forum header by zaher1988 on 12-15-2005 at 04:01 PM
Even though on IE
nothing
RE: Spot on forum header by -rafy- on 12-15-2005 at 04:01 PM
Nothing here either.
Firefox.
RE: Spot on forum header by wj on 12-15-2005 at 04:13 PM
Try cleaning your monitor
RE: Spot on forum header by absorbation on 12-15-2005 at 04:15 PM
quote:
Originally posted by wj
Try cleaning your monitor
* absorbation points at screenshot
yeyyycan we have some specs haydan maybe the theme your using?
RE: Spot on forum header by Sunshine on 12-15-2005 at 04:29 PM
Update firefox?
RE: Spot on forum header by CookieRevised on 12-15-2005 at 04:32 PM
quote:What do you mean by "some other pages"? Does it always appear on the logo, or does it only appear on some xmas logo's?
Originally posted by haydn
I only get the spot shown on the forum index and some other pages of the forum, including this one (the post a new thread page)
Also, what happens if you view the image alone in your browser (thus don't open it with a graphics program, but open it in your browser)?
http://shoutbox.menthix.net/images/topleft_xmas.gif
And do you see the same spot on the next image (again, test only in firefox)?
http://shoutbox.menthix.net/attachment.php?pid=577893
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quote:This seems like a tiny bug in the render engine of firefox.
Originally posted by haydn
and for some reason it only appears in firefox.
RE: Spot on forum header by CookieRevised on 12-15-2005 at 04:54 PM
PS: It also seems that actually all the colors shown in your screenshot are not the original colors as intended by the images.
Performing an arithmetic comparisson between the original images and your screenshot result in (top image):
And note that the black color in the original top image, are actually many different shades of black as you can see in the color stretched bottom image.
This result image should be totally black with RGB value 0 (except for the spot and your green circle).
This may be the result of how you saved the image as a PNG. But normally if you simply save an image/screenshot as PNG, it should preserve all color RGB values exactly as they are if you didn't alter anything in the PNG format and/or settings itself. eg: color reduction, anti-bleeding, dithering, etc can make colors slightly off. So even, if you save an image as PNG, always check the image format settings. Saving as a PNG doesn't automatically mean you preserve all colors.
RE: Spot on forum header by haydos on 12-16-2005 at 05:33 AM
I re-installed firefox and updated my theme (Noia 2.0) and I am not seeing the spot anymore.
Also, regarding Cookie's last post, is there a way I can check whether my browser is reading to colours of the header correctly (eg by Prt Screening it and performing a specific operation before saving it)? (Note I only have MS Paint to do this)
RE: Spot on forum header by CookieRevised on 12-16-2005 at 10:37 AM
quote:With the old theme in place, can you answer these questions:
Originally posted by haydn
I re-installed firefox and updated my theme (Noia 2.0) and I am not seeing the spot anymore.
quote:
Originally posted by CookieRevised
What do you mean by "some other pages"? Does it always appear on the logo, or does it only appear on some xmas logo's?
Also, what happens if you view the image alone in your browser (thus don't open it with a graphics program, but open it in your browser)?
http://shoutbox.menthix.net/images/topleft_xmas.gif
And, important, do you see the same spot on the next image (again, test only in firefox)?
http://shoutbox.menthix.net/attachment.php?pid=577893
---------------------------------
quote:Not with Paint though. But most other graphics editors have what is called "arithmetic functions".
Originally posted by haydn
Also, regarding Cookie's last post, is there a way I can check whether my browser is reading to colours of the header correctly (eg by Prt Screening it and performing a specific operation before saving it)? (Note I only have MS Paint to do this)
1) You make a picture with all possible colors (thus 24 bit = 2^24 possible colors), or you take a nice photograph or something.
2) Then open the image inside your browser
3) Take a screenshot (PRTSCRN) and copy/paste it as a new image in your graphics editor (and crop it to the original image's size).
4) You open the original image file in your graphics editor as a second image.
5) Now you have 2 images in your graphics editor, ready to perform the arithmetic function on.
Each pixel of the image has some RGB values, and thus you can do some calculations on those values (this is also how filters work). One of the basic arithmetic operations is calculating the difference between a pixel from one image and a pixel from the other. If the difference is RGB value 0, you know that both pixels are identical. If it isn't the resulting pixel gets the calculated value.
pixel image 1 RGB = 50 90 70
pixel image 2 RGB = 150 90 60
pixel Difference RGB = 100 0 10
Though, I don't know of any "trick" you can do in MS Paint to accomplish the same. So, I'm afraid you can't do this in MS Paint. But there must be a free graphic editors (or viewers) which can do it.
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EDIT: Since you mentionned you have only Paint, I assume you saved the screenshot from your first post also with Paint? This made me wonder if it was Paint itself which alters the colors slithly when saving as a PNG. (internally, as you can't set anything in Paint to alter colors, etc before saving an image).
So I took a screenshot (prtnscrn) of my desktop with the top of this thread showing, and pasted it in Paint and in PSP. I saved the image in Paint as a png and opened it up as a second image in PSP and did the comparisson, no differences at all.
So it means that Paint does not alter the colors (which is a good thing), so the altered colors from your screenshot aren't because of that. Thus this means that your screenshot is indeed proof that your browser is doing some fishy things with the colors though (unless the colordepth of your windows is 16bit instead of 24bit or 32bit?).
EDIT2: if you wanna know for sure (without downloading and installing something new), take again a screenshot (with your new browser theme in place) of that same xmas logo on top of forum pages and save it as PNG (in other words, just as you did before) and attach it to a post.