GirlTECH Assignment: Day 3

Scanning & Editing a Color Photo
for your Home Page


Equipment and Software Description

Scanning will be done on a Hewlett Packard Scan Jet IIcx flatbed scanner. This machine comes with Desk Scan II software that has been installed on a Compaq 486. After scanning, the picture will be edited on LView Pro 1.B2 for Windows 3.1.

Setting the Resolution, Type, and Path

    1. Turn the scanner on if needed (thes mall green light should be on.) It is usually left on all day to keep the lamp warmed up and ready to go.
    2. Raise the scanner lid, place your photo in the far upper right corner of the bed, then close the lid.
    3. Go to the attached computer and click on the Desk Scan icon.
    4. A control panel will appear as will menus at the top of the screen. Select Custom/Print Path ( meaning pull down Custom and click on Print Path.) In the dialog box that appears, go to the section called Resolution and make sure the two settings under Photo say 72 dpi (a recommended resolution for graphics on the Internet.)
    5. Go back to the main control panel and look at the two settings near the top. For Type choose Millions of Colors. This will give us the best image quality for a color photo. Set the Path to Screen so that the scanned image during Preview will go to the screen and not to a printer.

Preview Scanning and Adjusting the File Size and Picture Scale

    1. Click on the Preview button at the bottom of the control panel. The lamp will immediately start to warm up, and then the photo will be scanned. The Desk Scan II software has been set to automatically scan only the photo's area (not the whole bed) as well as choose the best exposure and select the image type best suited for the image it sees (in our case, Millions of Colors for a color photo.)
    2. Once the picture is scanned, the Size indicator will estimate the file size needed to store the image. Since we are using the Millions of Colors image type, it will be relatively large (the Black and White image type would give the smallest file size.)
    3. The Scaling control above the Size indicator can change the actual size of the image on screen. Before changing the scale, you may want to change the units from centimeters to inches. To do this pull down the Custom menu and click on Image Size. Change the Units on the left side to Inches.
    4. Back on the control panel you can move the Scaling lever and see the numbers for Width and Height change accordingly. The Scaling percentage above the lever will also vary as you move the lever, as will the file Size shown above the Preview button. For example, moving the lever so that it shows Scaling : 200% would produce an image twice as big as the original scan. The Size of the file would also have a larger number. Adjust the Scale lever so that the largest dimension is no more than 3 inches. If your file size is still too large, don't worry. You can also reduce it during LView editing.

Making the Final Scan and Saving the Image File:

    1. Click on the Final button and the Save a Picture to Disk dialog box will appear. Insert your disk and select a: in the Drives box. In the List Files of Type box choose MS Windows 3.0 Bitmap
    2. This is a type that will accept the Millions of Colors image type and yet be transportable to Lview Pro where we will save it as a JPEG file. The extension *.bmp should now appear in the File Name box. Give your file a name that includes .bmp at the end. Click on OK and the file will save. Close Desk Scan II.

Opening the file inside LView Pro and Croping the Image

    1. Click on the LView Pro icon and select File/Open. In the List Files of Type box highlight Windows (*bmp,*dmp). Open the file from the a: drive that you saved with Desk Scan II.
    2. You should now crop the picture both to delete the unnecessary areas of the picture and to reduce the size of the file. To do this move the cross-hair cursor to the upper left corner of the picture. Click and drag diagonally. As you do a red and white frame will grow. When you stop dragging, the frame is set. If you like the framed part, select Edit/Crop! If you did not like what was framed, click somewhere outside of the frame and it will disappear. Now you can redo the frame. If you have framed and clicked on Crop! but do not like the effect select Edit/Undo, and then redo the frame (Undo will reverse this editing and the enhancing that follows.).

Enhancing the Picture and Saving the Final Version

    1. To brighten or darken a picture select Retouch/Gamma Correction. Drag any scrollbar (all 3 should move together) to the right to brighten a picture and to the left to darken it. Click on OK.
    2. The next thing to change is the contrast. Select Retouch/Gamma. Scrolling to the right will increase the contrast, and going to the left will decrease it. Click on OK.
    3. If there is too much of one color (for example a green cast in an indoor shot) select Retouch/Color Balance. Scroll the R, G, and B (red, green, and blue) as needed. Click on OK.
    4. To sharpen the focus, select Retouch/Image Filters. In the Select Filter box, highlight Sharpen, then click on OK.
    5. The final editing will be to reduce the overall size of the picture if this is still needed. Select Edit/Resize. At the top of the dialog box change the largest dimension until it is no more than 300 pixels. Click on OK.
    6. You are now ready to save your revised file. Select File/Save As. In the List Files of Type box choose JPEG (*.jpg) The extension *.jpg should now appear after your file name in the File Name box. Be sure the a: drive is chosen, and then click on OK.


Acknowledgements: Thanks go to Jim Curtin, Dennis Donovan, and Carlos Solis for their scanning advice.

Copyright 1996 Barbara Christopher (bchristo@cs.rice.edu) Permission is hereby granted to reproduce part or all of this document for educational use, provided that this copyright notice is included.

[ CRPC GirlTECH '96 Training Materials Home Page - CRPC GirlTECH '96 Home Page
CRPC Women's Programs Home Page - CRPC Home Page]


GirlTECH '96 is maintained by Debbie Campbell (dcamp@cs.rice.edu).
URL http://www.crpc.rice.edu/CRPC/Women/GirlTECH/Materials/scanedit.html