Use the View tab to position the projector inside WATCHOUT in roughly the same way.
![nview projectors nview projectors](https://cmtsoundsystems.com/content/uploads/2015/06/Viewsonic-3K.jpg)
Place the physical projector so it illuminates the object as desired.Display the 3D model using a Cue on a timeline.Have a 3D model that accurately matches the physical object.Have a physical object to map images onto.
![nview projectors nview projectors](https://www.projectorcentral.com/images/projectors2/img876.jpg)
In order to get optimal results, the width / distance ratio (zoom) must be known from the projector specification. A small value here indicates a wide angle lens, while a larger value indicates a long throw lens.Ĭhecking this option will improve end-results if you are projecting onto objects that will vary in their distance from the projector. The focal length of the projector’s lens, expressed as the ratio between the image width and projection distance. Always check the documentation before using a projector in any other orientation than horizontally. Rotates the projector, allowing you to use the optimal angle to cover the projection object.ĬAUTION: Some projectors have restrictions on how they may be mounted or rotated, due to air-flow and heat reasons. Alternatively, use the “ View” tab in this dialog box to move the projector while viewing the scene from the projector. To orient the projector in 3D space, use the “View” commands on the Stage menu to rotate the Stage window in order to look from the top or from the side. Likewise, to change the target position, drag the yellow point in the Stage window. To change the position interactively, drag the projector in the Stage window. The target position of a selected projector is indicated by a yellow point at the end of the projection beam in the Stage window. Specifies the position and target position of the projector, in 3D space. While the values may be edited numerically, you typically use the “ Calibrate” tab instead to determine all these values automatically. This tab in the dialog box specifies the location, target point, rotation and focal length of the projector. This stops WATCHOUT from attempting to calculate these parameters, which may simplify the calibration procedure. Select this option if you’ve determined the lens shift accurately ahead of time. That works well for projectors with a fixed lens shift, but may sometimes be harder when using variable lens shift in an installation. In general, it is best to measure the lens shift ahead of time, and enter it manually. The lens shift can either be determined and entered manually, or it may be derived as part of the projector calibration (see “ Calibrate”). Entering an incorrect value may impede your ability to use WATCHOUT’s calibration feature to align the projector. You’re advised to make your own assessment of this value rather than relying on the manufacturer’s stated lens shift. Furthermore, the lens shift stated by the projector manufacturer is often an approximation. NOTE: Some projector manufacturers refer to a shift of half the image height as “100%”. The same applies in the horizontal direction, where a positive percentage value shifts the image to the right and negative to the left.
![nview projectors nview projectors](http://www.passioncompassion1418.com/Canons/ImagesCanons/Angleterre/Minen/LivensProjectorHooge5.jpg)
That is, the image is shifted upwards by 50% of its total height. If the image is shifted so that its bottom coincides with the projector’s center line, it is said to be 50%. Hence, for a vertical lens shift upwards from the projector’s center (as shown in the illustration to the right above), you specify a positive shift value. The lens shift is described as a percentage of the total image height and width.
![nview projectors nview projectors](https://images.onlinebiz.com.au/additional/pj/sony/h13vplphz50.jpg)
When mapping images onto a three-dimensional object, it is important to account for the lens shift in order to obtain a correct mapping.