Classify the Data

Database classify allows the user to review scan quality and identify any scans that should not be included in the project.

This tutorial will demonstrate how to classify the quality of a scanned subject. The instructions in this document apply to new scans and to previously saved scans that are included in the current project.

1. Select 'Database | Classify...'

DigiSize - Database Menu

The Classify function displays a list of scan subjects from the current project database showing the key, scan date (yyyymmdd), and quality classification for each scan. Scan quality is set to unprocessed at the time a scan is saved. Scans must have been saved using the Scan Manager. Each scan can be viewed to check for any problems that may cause inaccurate measurements. Only those scans that are classified as good will be available for processing by functions such as Measurement Batch, Statistics, etc.

Database Classify

2. First set the display list to the subjects of interest. The list of subjects displayed is based on the selector pop up menu. Select All from the pop up menu, then click the Okay button to display all of the subjects in the current project database.

Database Classify - Select All

• To display a list of subjects that were scanned on a specific date, select Scan Date from the pop up menu, enter the part of a date to match into the text field and click Okay. The date must be entered in the same form as it is displayed, yyyymmdd. The asterisk (*) can be used as a wildcard. As and example, entering a search date of 200511* would list only those subjects who were scanned in November of 2005.
• To display basic information about a scan subject, select the subject from the list with a single mouse click. The subject information is displayed in the lower section of the Database Classify window. The Next Record and Previous Record buttons can be used to step through the subjects in the list.
3. To view a scan, double-click a subject from the list. The scan will be displayed in the main DigiSize window where it can be rotated and viewed from different angles. For the purposes of this tutorial, double-click the scan with a Group of download and an ID of female2.

View Scan

4. It is now time to classify the scan. If there are no problems, the scan should be classified as good by using the drop down menu at the bottom of the window.

View Scan

If there is a problem with the scan, such as movement, external light interference, incorrect scan pose, etc., the scan quality should be set accordingly. Refer to this section of the user guide for examples of some of the more common problems with a scan.. A sampling of the choices available in the drop down menu are:

1. Clothing: Indicating a problem with the subject's clothing
2. Glasses: Showing a problem with reflections or artifacts caused by the subject wearing glasses.
3. Noise: Choose this descriptor if there is noise in the data, usually caused by ambient lighting conditions.
4. Position: This selection indicates that the subject was improperly positioned.

IMPORTANT:
Only those scans classified as good will be available for all other DigiSize functions.

5. After selecting the appropriate quality setting from the pop up menu at the lower left of the window, ensure the scan is selected in the scan list, then click the Update Quality button.

View Scan

6. Continue this process until all subjects have been classified.
7. Close the Database Classify window by clicking the Window Close Button at the top right of the window.
8. Continue to align the database.