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pupil tracking device

A pupil tracking and pupil technology, applied in the field of interactive systems, can solve problems such as the inability to correctly locate the pupil image Ip, the inability to correctly perform pupil tracking, and the vulnerability to the influence of environmental light sources, etc., to eliminate the influence and improve the accuracy.

Active Publication Date: 2016-12-28
PIXART IMAGING INC
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A problem with known pupil tracking devices is that they are susceptible to ambient light sources such as figure 1 A schematic diagram showing a human eye image 9, which includes a pupil image Ip and an ambient light source image Io, when the pupil image Ip and the ambient light source image Io overlap each other, it may not be possible to correctly locate the pupil image Ip, Therefore pupil tracking cannot be performed correctly

Method used

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Embodiment Construction

[0047] In order to make the above and other objects, features, and advantages of the present invention more obvious, the following will be described in detail with the accompanying drawings. In the description of the present invention, the same components are represented by the same symbols, and should be described in advance.

[0048] Please refer to Figure 2A As shown, it shows a schematic block diagram of the pupil tracking device 1 according to an embodiment of the present invention, which includes at least one active light source (for example, four active light sources 111-114 are displayed at this time), an image sensor 12, a control processing unit 13 and a storage unit 14. The pupil tracking device 1 of this embodiment mainly uses the active light source to project at least one active light source image on the eyeball 90 as a positioning reference point, and determines the relative relationship between the pupil position and the positioning reference point (ie, the active...

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Abstract

A pupil tracking device comprises an active light source, an image sensor and a control processing unit. The active light source emits light to an eyeball by a first luminance and a second luminance in turn. The image sensor acquires a first luminance image corresponding to the first luminance and a second luminance image corresponding to the second luminance. The control processing unit is used for identifying brightest areas of relative positions in the first luminance image and the second luminance image as active light source images.

Description

Technical field [0001] The present invention relates to an interactive system, in particular to a pupil tracking device that uses at least one active light source as a positioning reference point. Background technique [0002] The interactive control mechanism can provide users with a more user-friendly control method, so it has been widely used in various multimedia systems, especially in image display systems including display screens. [0003] Using a remote control capable of acquiring images as an interactive man-machine interface is a common method, and the remote control can be made into various props, such as bats, rackets, and clubs. Another type of interactive man-machine interface does not require any handheld device to perform, for example, a pupil tracking device can perform interactive operations according to the change of the user's line of sight. [0004] The problem with the known pupil tracking device is that it is easily affected by ambient light sources, such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/01
Inventor 黄昱豪高铭璨李宜方许恩峰谢孟寰陈念泽
Owner PIXART IMAGING INC