Spotrack system is patented system that gives followspot functionality to moving lights. It is 3D tracking system that allows single operator to track one stage performer, with up to, 20 moving lights in tracking mode. Spotrack system consists of video camera, computer and DMX interface. Video camera is placed in such position to give overall view of the stage, and video is displayed on computer screen (via TV capture card). Operator is following stage performer with computer mouse on screen, and, in real time, based on mouse position on screen, computer calculates pan and tilt values for each individual moving light, providing them with tracking functionality.
Spotrack system includes 3D stage correction and performer height correction. There are nine areas that can be defined for automatic 3D stage correction. When operator move computer mouse in one of this areas, computer will automatically include correction factor when calculating tilt and pan values. Area "0" is for performer height correction. Spotrack operator is following performer by targeting computer mouse at his/her feet. If this function is not activated, moving light, centre of beam will be at performer feet (stage floor). Activating this function, operator can choose where the centre of beam will be targeting. Performer waist, head or even, over head. Performer height correction is automatically added to 3D stage correction.
Spotrack system is integrated in DMX network. It receives DMX data from light desk and inserts pan and tilt values for each moving light, thus enabling light desk and Spotrack system to control moving lights at the same time. This way, effects, colours, gobos, and all other moving light parameter can be controlled by the light desk. Tracking, pan and tilt values, are controlled by spotrack operator. This functionality provides integration of light effects and tracking functionality, for a "that looks nice" effect.
Spotrack system is 21 DMX channel device. Each moving head can be attached (value >128) or detach (value <128) from tracking at any time, or tracking function, in general (for all moving lights) can be enabled or disabled. This way, for example, we can have only three moving lights in tracking mode during song and seventeen in effect mode (controlled by the light desk), and, at the end of the song we can use all twenty moving lights in tracking mode (all moving lights targeting stage performer).
Based on the performer distance from moving light, computer calculates dimmer value for each moving light. This function can be enabled or disabled.
Moving light calibration is done using two points on the stage floor. Spotrack and light desk operators can calibrate 20 moving lights in 60 minutes.
Spotrack system is modular system; this means that two or more systems can be configured in one show. It is possible to use several spotrack operators and one light desk, so that several performers can be tracked on the stage, individually.
Spotrack operator is free to choose what performer on stage will be tracked with moving lights in real time. During the show, operator can track, singer, guitar player, or it can focus with light, a drummer, back vocals, etc.