Scanned Image Processing
Dear GIMP Gurus, I am facing a long-standing problem. I would be most grateful if any of you can give me some ideas or point me to some source of help about the solution of this problem. I have just browsed through the avaiable plug-ins in GIMP but it seems that none of them can solve my problem. I want do image analysis of some colour logos. I try to scan some logos from magazines, books, promotional brochures and catalogs. Perceptually, these logos are very simple and usually contain several patches homogeneous colors. My image analysis software depends on this assumption to be successful. However, in practice, the scanned images might have many pixels with very different colours due to the following possiblities that I guess: 1. Dithering when the publication is produced 2. Anti-aliasing effect when the publication is produced 3. The "texture" of the publication paper I want to do automatic or semi-automatic pre-processing with GIMP so that the above three effects can be removed before my image analysis algorithm is applied. I have no idea on how to do the preprocessing efficiently and accurately. Could any one give me some ideas of how to perform the above three tasks efficiently and accurately? Thank you for your attention. Kent.
RE: Scanned Image Processing
Title: RE: Scanned Image Processing Perhaps doing Posterization (Image/Color/posterize) -Message d'origine- De: Cheung Koon Tung, Kent [mailto:[EMAIL PROTECTED]] Date: vendredi 02 février 2001 10:31 À: GIMP Objet: Scanned Image Processing Dear GIMP Gurus, I am facing a long-standing problem. I would be most grateful if any of you can give me some ideas or point me to some source of help about the solution of this problem. I have just browsed through the avaiable plug-ins in GIMP but it seems that none of them can solve my problem. I want do image analysis of some colour logos. I try to scan some logos from magazines, books, promotional brochures and catalogs. Perceptually, these logos are very simple and usually contain several patches homogeneous colors. My image analysis software depends on this assumption to be successful. However, in practice, the scanned images might have many pixels with very different colours due to the following possiblities that I guess: 1. Dithering when the publication is produced 2. Anti-aliasing effect when the publication is produced 3. The texture of the publication paper I want to do automatic or semi-automatic pre-processing with GIMP so that the above three effects can be removed before my image analysis algorithm is applied. I have no idea on how to do the preprocessing efficiently and accurately. Could any one give me some ideas of how to perform the above three tasks efficiently and accurately? Thank you for your attention. Kent.
Re: magnifying tool
Richard Mansfield wrote: How do I get back to the regular size after using the magnifier on an image? That is to say, what is the gimp equivalent of double clicking on the hand in PhotoShop? SHFT+click HTH ~C~ www.gimp.org - grokking the gimp
Re: magnifying tool
On Fri, Feb 02, 2001 at 01:24:11PM -0500, Richard Mansfield wrote: How do I get back to the regular size after using the magnifier on an image? That is to say, what is the gimp equivalent of double clicking on the hand in PhotoShop? Type '1' and that will get you back to a 1:1 zoom. - Tal -- -- -- | Tal Danzig | Libranet Linux | | [EMAIL PROTECTED] | The TOP Desktop! | | http://tal.thepenismightier.net/ | http://www.libranet.com/ | -- -- Beneath the rule of men entirely great, the pen is mightier than the sword. -- Edward G Bulwer
Re: Scanned Image Processing
I haven't tried this, but maybe fiddling with indexed mode and limiting the number of colors would help. My experience with posterization has been that it doesn't partition the image colors the way I would. -Jeff T
Re: magnifying tool
At 01:24 PM 2/2/01 -0500, you wrote: How do I get back to the regular size after using the magnifier on an image? That is to say, what is the gimp equivalent of double clicking on the hand in PhotoShop? using both the - and the + key affects the magnification - whether or not you are using magnifier.
Re: magnifying tool
[EMAIL PROTECTED] (2001-02-02 at 1324.11 -0500): How do I get back to the regular size after using the magnifier on an image? That is to say, what is the gimp equivalent of double clicking on the hand in PhotoShop? No idea of PS method, but in Gimp you can press Ctrl while using the Mag tool to zoom out, or change zoom via menus or keycombos (Image / View / Zoom In | Zoom Out | Zoom / ). I personally use for Zoom In, Ctrl + for Zoom Out, 1 for Zoom / 1:1, 2 .. 5 for Zoom / 2:1 .. 16:1, and Ctrl + 2 .. 5 for Zoom / 1:2 .. 1:16. My keyboard has near the 1, the = does not work (it is Shift + 0, as in most European kbd I believe) and - is far, so using the first six keys of that row alone or with Ctrl is the best for me and easy to remember (keys alone mean bigger, keys with Ctrl mean smaller size on screen). GSR
Re: Scanned Image Processing
"Cheung Koon Tung, Kent" wrote: 1. Dithering when the publication is produced 2. Anti-aliasing effect when the publication is produced 3. The "texture" of the publication paper I want to do automatic or semi-automatic pre-processing with GIMP so that the above three effects can be removed before my image analysis algorithm is applied. You might want to try the non-linear filter (nlfilt). It is designed to (on some settings) smooth out small variations in colour, while not blurring edges between different colours. -- David Hodson -- [EMAIL PROTECTED] -- this night wounds time
Brand New E-Mail pager for FR-EE!
Brand New E-Mail pager for FREE! No long term contract No activation fee No big prepayment of airtime No credit check PAGING AMERICA is going to give you absolutely Free the Brand new Motorola Accessmate E-Mail display pager. This is the top of the line PCS technology pager made today. This side viewable display pager has a retail value of $189.00and comes with its own e-mail address so you can receive your e-mails as well as alpha-numeric and numeric messages instantly where ever you are. Your new e-mail pager has features like 50,000 character memory, message time stamping, automatic garbled message correction, beeps or vibrates, incandescent backlight, saved message folder, a unique never out of range feature that allows your pager to retrieve messages sent earlier when your pager was out of range or turned completely off. You can also receive weather, news and sports .The Motorola e-mail pager is very small and uses only a single double A battery. All we ask before we ship you your Free pager is for you to allow us to provide the airtime for you. There is no long term contract or credit check. Airtime is month to month and can be cancelled at any time. This pager will comes pre-programmed with its own e-mail address as well as a local telephone number to receive numeric pages. This pager comes with a complete 30 day money back guarantee, if after receiving this pager you're not completely happy, send it back and receive a full refund. For immediate delivery call Paging America at toll free at 877-699-8545 Brand New E-Mail pager for FREE! No long term contract No activation fee No big prepayment of airtime
