# View the detection statistics

The detection statistics are displayed in the Detection performance pane, which is, by default, displayed at the bottom of the screen.

If the Detection Performance pane is not displayed, click the Show/Hide button on the toolbar and select Detection Performance.

The Detection Performance pane shows immediate feedback when you change detection settings.

Missed samples

The percentage and number of samples that were skipped due to lack of processor time. This value tells you whether your PC can handle the sample rate specified (see Sample rate). See also Missed samples for tips on how to increase the maximum sample rate handled by the PC.

The value is reset to zero when you load another video file or click Save changes in the Detection Settings pane.

Interpolated samples

The percentage and number of missing samples due to missing video frames that were interpolated. This statistic is only available when in the Detection Settings under Smoothing the option Dropped frames correction is On. See Dropped frames correction

▪What is the maximum acceptable percentage of interpolated samples? Only accept a high value of interpolated samples when you are sure that the tracks represent the movement of the subject reliably. If the percentage is as high as 30% and the subject moves fast or makes sharp turns, the resulting track includes lots of artifacts and the statistics are unreliable. In Integrated Visualization check whether the tracks with high percentages of interpolated samples match the actual movement of the subject.

▪The value is reset to zero when you load another video file or click Save changes in the Detection Settings pane.

note This correction is not applied when the subject is not found for other reasons other than the dropped frames, for example when the subject is out of view.

Subject not found

The percentage and number of samples in which the subject was not found. This information is useful to check the quality of detection in general. When a subject is not found, it means that EthoVision XT processed the image, but did not find anything matching the current Detection Settings. Use Subject not found to assess the quality of tracking.

When you select another video file, or click Save changes, the value for Subject not found is reset to zero.

Warning colors thresholds

The percentages of missed samples, interpolated samples and samples where the subject is not found are usually displayed in green for each arena and subject. When the values are above the set threshold, they are highlighted in red. This helps you monitoring the quality of tracking, and spotting detection issues.

Click the button under Missed samples, Interpolated samples or Subject not found to change the thresholds.

See also

▪Detection statistics after acquiring data