Results view - Object Filter

Use the Object Filter results view, in the Count and Measure Results tool window to define filter ranges for the measurement values and to thus filter the desired measurement values out. All of the measurement values that lie outside the defined measurement value area, won't be displayed, nor taken into account in any of the results views. Objects that have been filtered out won't count towards the class results, for example. This can make sense when unwanted objects are still detected after the segmentation.

Use the View > Tool Windows > Count and Measure Results command to have the tool window displayed. Should the Object Filter results view not yet be active, click the Object Filter tab to activate it.

Structure of the tool window

The tool window is made up of several groups. Click on one of the areas in the tool window shown schematically above to jump to the corresponding help topic.

(1) Toolbar in the results view

The following table lists the buttons that apply to object filters. The other buttons change the display of the measurement values in the chart.

	Select Detected Objects	Click this button to select an individual object, or also several objects.
	Toggle Object Filter	Click this button to switch the filter function on or off.
	Clear Filter	Delete all filters. All values in the Filter ranges table are reset to None. If you only want to switch off the object filters temporarily, use the Toggle Object Filter button.
	Load Filter	Load saved filter settings. Please note, the filter settings have to fit to the current measurement parameters. When you load filter settings that were defined for other measurement parameters, the loaded filter settings have no effect.
	Save Filter	Save the current filter settings as a parameter set. Then you can use this object filter again for other object analyses.
	Select Object Measurements	Select the measurement parameters with which you want to measure the found objects. In the Object Measurements and Object Filter results views, the same measurement parameters will be shown. Any changes you make in the one results view will automatically affect the other results view.

(2) Filter ranges

In the table you will see a list of all of the selected measurement parameters and their corresponding filter ranges. There will always only be one measurement parameter active. You can either enter the filter range directly in the list or you can interactively determine it, by selecting objects in the image.

Entering the filter range directly

1.In the table, click the measurement parameter for which you want to define a filter range.

2.Double click in the [Min. field, located next to the measurement parameter to enter the lower value for the filter range.

4.Double click in the [Max. field, then enter the higher value for the filter range.

6.You can delete individual values by double clicking the value, then pressing the [Del) key.

Defining the filter range interactively

1.In the table, click the measurement parameter for which you want to define a filter range.

2.Click the Select minimum value

button, above the Measurement list, to define the filter range's lower value.

3.Click an object whose measurement value is to be used as the lower value for the filter range. When you, for example, define a filter range for the Area parameter, click the smallest object that you still want to measure.

4.If you want to undo the selection you've made, click the Clear minimum value

button.

5.Click the Select maximum value

button to define the filter range's upper value.

6.Click an object whose measurement value is to be used as the upper value for the filter range. Click the largest object that you still wish to measure.

7.If you want to undo the selection you've made, click the Clear maximum value

button.

Saving and loading filter settings

1.Click the Save Filter

button to save your filter settings as a parameter set. A parameter set that has been saved can be exported and imported.

(3) Statistics

The results sheet with the statistics is located below the list with the filter ranges. The statistics will be shown for the active measurement parameter. If you choose the Area parameter, for example, the mean area for all found objects will be displayed. Only the values of objects within the current filter range are taken into account.

Showing and hiding statistical parameter

You can completely switch of the display of the statistical parameters, or also select only certain parameters. Open the Tools > Options > Measurement and ROI > Results dialog box. You can find the statistical parameters that are available in the Statistics group.

Standard deviation: The standard deviation is a measure for the spread of the measurement values around their mean value.

If you don't want to calculate any statistics, clear all of the check boxes. The results view now only contains the table with the filter ranges.

(4) Distribution of the measurement results

On the right-hand side of the tool window, the histogram shows the distribution of the current measurement parameter. The histogram shows the selected measurement parameter's distribution. The number of objects has been plotted along the Y-axis. The selected parameter has been plotted along the X-axis. The name of the current measurement parameter is displayed below the histogram. You can change the way the histogram is displayed, by using the zoom buttons on the toolbar.

Defining the filter range in the histogram

It's easy to change an existing filter range in a histogram. The filter range is depicted with two lines in the histogram. The line on the left shows the lower limit value, the line on the right the upper limit value.

2.When you move your mouse pointer onto one of the two black lines, the mouse pointer will change its shape into a double arrow.

2.Keep the left mouse button pressed. Now you can move the line and, by doing so, set a new value.

In the diagram, the line on the left shows the lower limit value, the line on the right, the upper limit value, for the filter range.

Changing the display of the histogram

Zoom Out

Zoom In

Use the zoom buttons in this toolbar to spread or compress the display along the chart's X-axis.

Adapting the view

Click the Zoom to Fit button to alter the chart's scaling so that all of the available values are displayed.

Logarithmic Scale

Linear Scale

Choose between a linear and a logarithmic display.

With a logarithmic representation, very small Y-values will be shown on a relatively large scale while greater Y-values will be relatively reduced in scale.