DCam User Guide-Troubleshooting

The following are troubleshooting procedures for some possible issues.

Sections:

Troubleshooting Color Calibration, Extra-White Documents
Troubleshooting Single-Step Calibration (Color Only)
Troubleshooting Focus Calibration
Troubleshooting LSI Calibration (Grayscale Only)
Troubleshooting Whiteboard Calibration (Grayscale Only)
Addressing a Places Error
Addressing a Windows Defender Error
Addressing a Locality Service Error

Troubleshooting Color Calibration, Extra-White Documents

If you are working with documents that are whiter than the A patch of the grayscale card, check the bright white sampler check box. DCam uses the bright white sample area instead of the A patch for calibration. Place a bright white document onto the copyboard next to the grayscale card, and then click and drag the Bright White sampler target onto the document.

Troubleshooting Single-Step Calibration (Color Only)

To troubleshoot any problems that may arise with single-step calibration, check the following:

• From your view on the screen, verify that the targets on the copyboard are within the camera’s view.
• Verify that the correct grayscale and color targets are selected in DCam.
• If those do not remedy the situation, complete the manual calibration steps. (See Multistep (Manual) Calibration.)
  

Troubleshooting Focus Calibration

Out of focus is a quality control characterization that may lead to recapturing images. This result is characterized by blurring in all directions—as opposed to a single direction, as with motion blurring.

Out of focus images can result when the camera lens is not calibrated to have a large enough “depth of field.” The depth of field is the distance between the nearest and farthest points from the camera where an image is in focus. If calibration did not provide a large enough depth of field for the variance of documents in the collection, as is necessary especially with books, images may lose their crisp focus as pages are turned. Loss of focus usually occurs in the same location, image after image.

The F-stop on a camera affects the depth of field. Smaller numbers, such as F-2 and F-4, have less depth of field. Larger numbers, such as F-11 and F-16, have a greater depth of field.

Generally, when the lens is set at F-8, at least 0.5 inches (1.27 centimeters) is in focus. This is important when capturing a book. For a thick book, you need to occasionally reset the focus, since some pages are outside of the depth of field. Put wedges under the front and back covers so the entire surface of the book is in focus. Open the book to a middle page, and put the calibration tools on the book when calibrating.

Troubleshooting LSI Calibration (Grayscale Only)

The only way you can improve LSI is to increase the number of dots per inch (DPI) that the system is detecting across the sample of thin text you have chosen. Do this by lowering the camera. Select the largest document that you have in the group of records on which you are basing the folder. Complete the following steps:

Step 1: Move the camera down to maximize the array for the largest document and refocus.

Step 2: Click Next until you can check the LSI with the chosen text. Click Next again.

Step 3: If the LSI score still does not pass, contact your supervisor. You may need to request an exception.

• If capturing 2 pages at once, discuss how to resolve the LSI issue with your supervisor or manager. You may be asked to capture single pages instead of 2 pages at once.
• If you choose the single-page option, move the camera height down to capture images at a higher DPI.
• Redo all calibration steps, and check the LSI again. (Only capture in this way if you are directed to do so by your supervisor.)
• If you are working with the largest, single document in the group of records and have adjusted the camera height prior to calibration—making sure the longest side of the document is along the longest side of the camera viewing area—then lowering the camera will not work as a solution. That is, the LSI will be as good as you will be able to get it. To let the Quality team know why LSI is unacceptable, complete the following steps to request an exception:
  
  • From the screen where you see the failing score, click Back.
  • Place the largest document on the copy board to fill the camera’s viewing area.
  • Place the chosen document with the thin text visible.
  • Click Next.
  • Change the green highlighted area to show only the text you have chosen.
  • Click Next.
    

Troubleshooting Whiteboard Calibration (Grayscale Only)

You may see a number of common problems with Whiteboard Calibration.

• Bright white halo shapes on images can indicate dust, spots, dents, or other imperfections with the foam-core board. Ensure that the whiteboard is free of dust, spots, dents, smudges, or anything else. Additionally, if there are dust spots or hairs on the camera lens, they can show faintly in the background on every captured image.

Note: Use Tools to zoom in on a problem area to inspect more closely.

• A common problem occurs when the whiteboard is placed on the copyboard at a skewed angle, leaving one corner dark.
• An item left on the whiteboard can trigger 3 warnings in the left panel.
• Sometimes it is difficult to get even lighting. Be aware of light coming from windows because it changes throughout the day as the sun moves. Also be aware of overhead lights that automatically turn on and off because of movement sensors.
• Whiteboard calibration detects hot spots and cool spots in the lighting distribution and tries to compensate so that the lighting is even. If, however, the system is unable to calibrate the whiteboard, DCam will display an error message. To fix the problem, use the tables below, and address environmental lighting sources. Adjust the light bars in the control panel for more or less light. The following are some examples of lighting problems:

Problem	Example
Whiteboard with red means too much light
Whiteboard with red spot may point to an area of bright light reflection
Whiteboard with red section may mean too much light in 1 area
Whiteboard with blue may mean not enough light is available

The following table suggests solutions for correcting hot and cold spots:

Addressing a Places Error

If the Places localities database zip file cannot be found during installation, an error message displays.

To continue the installation without installing the Places database on the local workstation computer, click OK, and continue with the installation. (See Installing DCam Software.)

To install the Places database on the local workstation computer as part of the DCam installation, click Cancel, and complete the following steps:

Step 1: Make sure the PlacesDCAM-xxxx.zip file is in the same directory as the DCAM installer.

Step 2: Repeat the DCam installation. (See Installing DCam Software.)

Note: Contact your field supervisor for questions and support options.

Addressing a Windows Defender Error

If a screen that says Windows protected your PC displays during installation, follow these steps:

Step 1: Click More Info. Another screen that says Windows protected your PC displays.

Step 2: Click Run anyway.

Step 3: Continue with the DCam installation. (See Installing DCam Software.)

Addressing a Locality Service Error

If a screen that refers to a Locality Service Error displays on your PC during installation, follow these steps:

Step 1: Turn off the workstation’s Wi-Fi.

Step 2: Open DCam, and from the home screen, click Preferences.

Step 3: From any of the tabs on the preferences dialog, hold down the Shift key, and right-click. From the menu that displays, click Show Locality. Locality displays as a tab.

Step 4: Click the Locality tab.

Step 5: Uncheck the option to automatically detect online availability.

Step 6: Verify that the Use local service option is selected.

Step 7: Click Save.

Step 8: Install DCam. (See Installing DCam Software.)

Step 9: Turn on your Wi-Fi once again.