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Light source control method and device

A light source control and light source technology, applied in the field of image processing, can solve problems such as inaccurate gaze point estimation

Active Publication Date: 2018-11-06
BEIJING 7INVENSUN TECH
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  • Abstract
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Problems solved by technology

[0004] The embodiment of the present application provides a light source control method and device to solve the problem of inaccurate gaze point estimation in the prior art when the eyes are relatively close to the image acquisition device

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0032] The inventors of the present application have found through research that in the prior art, the light in the infrared frequency band is reflected on the cornea and enters the image acquisition device, so that the eye image obtained by the image acquisition device photographing the eye includes a light spot, combined with the position of the light spot and the...

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Abstract

The embodiment of the invention discloses a light source control method and device. The method comprises the following steps: judging whether a first light spot exists in an eye image, wherein the eyeimage is obtained by an image collection system by shooting the eyes of a target object, and the first light spot is formed by the light generated by a first light source and reflected by the corneain the eyes into the image collection system; if it is judged that the first light spot does not exist in the eye image, opening a second light source, so that the light generated by the second lightsource is reflected by the cornea in the eyes into the image collection system to form a second light spot, wherein the second light source and the first light source are located on the two sides of the image collection system respectively, and / or, the distance between the second light source and the image collection system is smaller than the distance between the first light source and the imagecollection system. The light generated by the second light source can be reflected by the cornea into the image collection system to form the second light spot in the eye image, so that the calculation of a fixation point is performed according to the second light spot and the eye features, thereby improving the calculation accuracy of the fixation point.

Description

technical field [0001] The present application relates to the field of image processing, in particular to a light source control method and device. Background technique [0002] Eye tracking technology refers to the technology of obtaining the user's gaze point by analyzing the user's eye movement. The mainstream technology mainly relies on eye images based on infrared frequency bands, analyzes eye feature information, and then obtains the user's gaze point. [0003] In the prior art, light spots in the infrared band can be reflected on the cornea to determine the user's gaze point by combining the spot position in the eye image and eye feature information, but when the eyes are close to the image acquisition device, it is easy to lose the light spots , leading to inaccurate gaze point estimation. Contents of the invention [0004] Embodiments of the present application provide a light source control method and device to solve the problem in the prior art that gaze point...

Claims

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Application Information

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IPC IPC(8): G06F3/01
CPCG06F3/013
Inventor 姜欣付阳王云飞黄通兵
Owner BEIJING 7INVENSUN TECH
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