Paths to Graphics: Scanning

There are many software packages you can use to convert paper images to digital files via the scanner. In the EIS lab, I recommend scanning using the scanner's native software and then doing image correction in Adobe Photoshop.


Scanning Paper (photographs, drawings, etc)

Open DESKSCAN

Select preview image

A scanner window will appear and the scanner will activate. When the preliminary scan is complete, check to make sure the menu-bar near the top says "millions of colors" (NOT black and white image or some other option). Select the desired scan area by dragging a box around it with your mouse and click on Final.

Once the image is scanned,save it as a "tiff" or "pict" file.

IF YOU ARE SCANNING ON THE MAC, YOU MUST ADD THE FILE EXTENSION .TIF TO TIFF IMAGES FOR THEM TO BE RECONGIZED BY PHOTOSHOP ON THE PC's

Open Photoshop

Select "open" from the file pull-down menu

In the dialog box which appears, select the file you just created with the scanner.

Under the Image pull-down menu, select Image size and make sure the resolution is set to 72 dpi. You can also adjust the dimensions of the image at this time.

To save as a .gif:

Pull down the Image menu, select the Mode pop-out menu, and select Indexed color. In the window that appears, select either 8-bit or other for the resolution. If you choose "other", you must indicate the number of colors you want the file to contain by typing the number in the "colors" box. If you are unsure, go with the default. Select Adaptive Palette and either None or Diffusion (your choice) for the Dither mode. Click OK.

Now, select File, Save As, and Compuserve *.GIF as the format type. Enter you file name in the appropriate box, and click on OK.

To save as a .jpeg:

Make sure you only have one active layer in Photoshop. To do this, use the merge layers command on your layers control window.

Pull down the File menu and "save as" .jpeg.


Scanning Slides

Use the Nikon COOLSCAN slide scanner.

Open COOLSCAN

A scanner window will appear and the scanner will activate. Click on Preview. When the preliminary scan is complete, check to make sure the image size is 6 inches by 9 inches (smaller, if you like), and the file size is constrained. You can rotate and mirror the image at this point. Select the desired scan area and click on Save.

Once the image is scanned, open Photoshop. Now, you can change the image size and adjust color/contrast/brightness.

Under the Image pull-down menu, select Image size and make sure the resolution is set to 72 dpi.

To save as a .gif:

Pull down the Image menu, select the Mode menu and select Indexed color. In the window that appears, select other for the resolution and type 256 in the "colors" box. Select Adaptive Palette and either None or Diffusion (your choice) for the Dither mode. Click OK.

Now, select File, Save As, and Compuserve *.GIF as the format type. Enter you file name in the appropriate box, and click on OK.

To save as a .jpeg:

Make sure you only have one active layer in Photoshop. To do this, use the merge layers command on your layers control window.

Pull down the File menu and "save as" .jpeg. 


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