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Yawcam -> Motion detection -> Settings

The Settings tab let you specify settings related to the motion detection. Here you decide how Yawcam shall detect motion. (You find the settings of how to take action under the Actions tab.)

 

[Motion Detection in]

Entire image - Select this option if you want the motion detection to take place over the entire image area.

Define area... - Click this button if you want to specify a smaller area of the image that Yawcam shall perform motion detection on. When the button is clicked a new dialog opens:

Draw a red square with the mouse to define the area you want to detect motion in. Click OK. You will notice that the preview area to the left changes to show your newly defined area.

 

[Detection level]

Below the preview area to the left are two bars. The upper one represents the current motion detected. The lower one shows the tolerance of when actions shall be taken. Notice that the upper bar is green when it has a lower value than the tolerance and red when the motion is greater than the tolerance. These bars are a great help when you specify the detection level!

Sensitivity - This slider specifies how sensitive Yawcam are for changes in the image area. A higher percentage will mark more pixels as changed. (Notice how the first bar below the preview area gets higher values when the sensitivity is increased.)

Tolerance - This slider specifies how much motion in the image that are allowed before the actions are taken. (Notice how the blue tolerance bar below the preview area changes according to the changes of the slider.) A higher percentage will tolerate more changes in the image before actions are taken.

Auto detect... - This button sets the values for sensitivity and tolerance automatically. It is important that there isn't any motion in front of your camera during the time the auto detection takes place.
It's not always the case that the auto detected values fit your needs. Then set the values by hand...

 

[Preview Appearance]

Mark color - The mark color shows the motion in the preview area. Click on the color to open a color chooser dialog to change the selected color.

Show image - Mark this checkbox if you want the image to be visible in the preview area. (Note that this requires some more CPU load.)

 

[Variations]

Invert... - Mark this checkbox if you want Yawcam to take action when the motion goes down. Notice that the color of the motion bar below the preview area changes to be red if the value is lower than the tolerance and green if it has a higher value.

Interval - Specify how often Yawcam shall analyze the image to see if something has moved. Enter the interval in milliseconds in the text field. (1000 milliseconds is 1 second.) A low interval will dramatically increase the CPU load. Only use a low value if you feel that your computer is powerful enough.

Don't save... - If this checkbox is marked new motion events will not be added to the list in the motion events tab. However the selected actions will still be performed as usual. This function is good if you expect a lot of motion events and don't want a long list.