On 17/05/06, Bill Ensley <[EMAIL PROTECTED]> wrote:
You can't state that you have a tiff of 750 pixels by 900 pixels and Also say that it is 600dpi. It doesn't work that way.
You certainly can. DPI is a mandatory tiff tag, as are height and width (in pixels).
A 750 by 900 pixel image is 600 dpi at 1.26 inches by 1.5 inches. It is 300 dpi at 2.52 x 3 inches. The math is pixels/dpi = inches.
or inches * dpi = pixels or more "correctly" pixels/inches = dpi (dots per inch after all!)
> <>I have a Tiff file width: 750 pixels, height: 900 pixels, resolution > 600 dpi, bit depth 24. How can I scale the image to width: 100 > pixels, height: 120 pixels, and keep the resolution close to 600 dpi?
You could use an image manipulation library, like imagemagick to do a resample - though if you don't care about size then I would suggest just telling the pdf to show the image at 100/120 (I suppose this is possible with iText?)(this won't give you 600dpi but much more...). The point is that what you are talking about is quite a complicated thing to do. You need to get rid of a certain number of pixels, and the ones discarded *do* matter if you care about your image. Best leave that to a programme with that as its core focus (there are many algorithms that do things in different ways...). Cheers Antoine -- This is where I should put some witty comment. ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid0709&bid&3057&dat1642 _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions
