Bio and Biochem Image Scanning and Acquisition
Keywords:
 
  Calendar
Calendar 		  Classifieds
Classifieds 		  Club Center
Club Center 		  Forums
Forums 		  Map
Map 		  News
News 		  Email
Email 		  Etc.
Etc. 		 

Questions List

  1. What's this all about?
  2. Do we have a slide scanner?
  3. Is there a paper scanner?
  4. What resolution should I use? How many dpi?

Questions and Answers

  1. Q: What's this all about?

    A: This FAQ aims to be a repository of answer relating to image acquisition by various means in Biology and Biochemistry at Brandeis. There's quite a lot of labs doing many variations on this, and there's no way I can answer all the questions.

    Contributions to this FAQ would be welcomed. E-mail karelsf@brandeis.edu


    Back to Top

  2. Q: Do we have a slide scanner?

    A: Yes, there is a Nikon Coolscan LS-1000 with a auto feeder attached to a Mac (peacock) in the Confocal Lab across from the Biology Office.


    Back to Top

  3. Q: Is there a paper scanner?

    A: Yes, there is an old but still functional H-P DeskJet scanner in the Contocal Lab. Many of the labs have fancier scanners.

    Actually, as of May 2002, there seems to be a new 1600x3200 dpi scanner attached to junco (an iMac).


    Back to Top

  4. Q: What resolution should I use? How many dpi?

    A: That depends on the resolution at which you want to use the images, and how much you want to process them.

    If you're going to use the images on a computer screen, your final image needn't be more than about 1024 pixels wide by 768 pixels high (the resolution of the best projectors we have available right now).

    If you're going to print an image (a photo or a microscope image, for example), you probably want something like 300 dots per inch (dpi) at the final size.

    If you're scanning something that's a line drawing or text, and you want to print it back out, go for the highest resolution you can get; the visual system is well suited to pick out small imperfections in text, etc.


    Back to Top