These relative displacements of the features within the frames can be utilized to estimate the movement of the options relative to the optical navigation system or the movement of the optical navigation system relative to the features. This sort of optical navigation method can be referred to herein as a beacon-primarily based navigation method. Beacon-based mostly navigation strategies are at present used in pc gaming items to trace movement of remote enter devices for the gaming items. A concern with conventional beacon-based navigation methods is that further hardware is required to offer the beacons, which provides price and undesired complexity to the general system. Another concern is that non-beacon gentle sources in the field of view, iTagPro smart device e.g., iTagPro smart tracker candles and reflections of mild, can be mistaken for the beacons, iTagPro smart tracker which may introduce navigation errors. One of these optical navigation technique will likely be referred to herein as a scene-based navigation method. Scene-primarily based navigation techniques are just like the navigation techniques employed in optical computer mice.
Positional modifications of the distinguishing features captured in successive frames of image data are used to trace the motion of the optical navigation system. Scene-primarily based navigation techniques may also be used in pc gaming models to track motion of distant input units for the gaming items. Such navigation errors may not be important for functions that aren't time-delicate, such as cursor control for phrase processing applications. However, for time-sensitive applications, such as pc gaming, iTagPro smart tracker such navigation errors might not be tolerable. FIG. 1 exhibits an optical navigation system in accordance with an embodiment of the invention. FIG. 2B illustrates an imaged display screen in captured image frames when the hand-held controller unit is moved laterally at a hard and fast distance from the display display in accordance with an embodiment of the invention. FIG. Three is a block diagram of the hand-held controller unit of the optical navigation system of FIG. 1 in accordance with an embodiment of the invention. FIG. 4 illustrates a means of finding the imaged show screen in a captured picture body by thresholding in accordance with some embodiments of the invention.
FIG. 5 illustrates a means of finding the imaged display screen in a captured picture body by trying to find a body of a show gadget within the image body in accordance with different embodiments of the invention. FIG. 6 illustrates a technique of discovering the imaged show display screen in a captured image body by searching for a quadrilateral area having a dominant color within the image body in accordance with different embodiments of the invention. FIG. 7 illustrates a technique of discovering the imaged display display in a captured image frame by evaluating the picture frame with a reference image in accordance with other embodiments of the invention. FIG. 8 is a course of stream diagram of a technique for tracking an input device in accordance with an embodiment of the invention. 100 features a hand-held controller unit 102 , iTagPro smart tracker a display machine 104 and a console unit 106 . 102 and the console unit 106 are part of a pc gaming system the place the hand-held controller unit is an input system of the system to manipulate graphical parts displayed on the show system 104 .
One hundred is used to implement other kinds of techniques. For example, some embodiments of the optical navigation system one hundred may be used to supply an accessible person interface for a pc system. One hundred operates to trace the movements of the hand-held controller unit 102 of the system using a show display 108 of the display device 104 in frames of picture knowledge captured by the hand-held controller unit 102 . Positional data of the imaged version of the display display screen 108 in captured image frames is then used to determine the current position of the hand-held controller unit 102 . 108 in a captured image frame might embody the situation and iTagPro smart tracker dimension of the imaged display display in the captured image body with respect to the captured picture body, as nicely as the form of the imaged display display screen in the captured picture body. 102 will be the place of the hand-held controller unit relative to absolutely the coordinate system with respect to the show display screen 108 .
102 could be the position of the hand-held controller unit relative to the previous position of the hand-held controller unit with respect to the display display screen 108 . This type of tracking using the imaged display screen in a captured picture body will generally be referred to herein as a display screen-primarily based navigation. FIGS. 2A-2C illustrate how the positional info of an imaged display display screen in a captured picture body can be used to determine the relative place of the hand-held controller unit 102 with respect to the show display 108 . FIG. 2A illustrates an imaged display display 210 in captured picture frames 212 A, 212 B and 212 C when the hand-held controller unit 102 is moved closer or bluetooth keychain tracker farther from the display display screen 108 . 212 A when the hand-held controller unit 102 is positioned near the show display 108 , iTagPro smart tracker the size of the imaged display display screen 210 is comparatively giant. 210 is rectangular in shape.