The Affine Transform makes it possible for several rectangular world model screens to be defined on one video signal as a gaze mapping option. After choosing this gaze mapping, Smart Recorder is in the Affine WM-Gaze mapping setup-mode and the Edit... button will be visible. The properties panel on the right side shows the options for this gaze mapping. Click on the ...-button located right next to the [Collection]-parameter, to create a new or modify an existing collection of world model objects that can be seen in the video signal.
Click on the Edit... button next to AffineTransform dropdown list or ...-button next to the [Collection]-parameter to set up the rectangular regions.
The “AffineTransformDefinition Collection Editor” is then displayed where the rectangular world model screens can be set up by pressing the Addbutton. On the right side a number of gaze mapping options will then appear. Enter the name of the screen that is to be analysed as it is defined in the world model in the row WorldModelObjectName. Add the screen resolution in the row WorldModelObjectSize, where the figures should match those in the world model definition. Choose if the filtered or raw gaze data is to be used by selecting True or False as the value of the parameter UseFiltered. The Corners-parameters gives the opportunity to place the four corner marks in the video image with relative values for x and y ranging from 0 to 1. The corners can later be adjusted by dragging.
The color and dot size of the corner marks can also be changed to discern different objects.
Dialog where the rectangular world model screens can be set up for the affine transform.
Click OK to confirm the collection and close the dialog or click Add to add another object. The setup object collection will now be displayed on top of the video image. Drag each corner of each object to the appropriate position in the video signal, if the predefined positions do not fit.
Adjust the rectangular world model screen to its correct position.
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