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Method and device for determining viewpoint area and controlling screen luminance

A screen brightness and screen technology, which is applied in the field of determining the viewing point area and controlling the screen brightness, can solve the problems of limited application range and inapplicability, and achieve the effect of wide application range, easy implementation, and high accuracy

Inactive Publication Date: 2014-11-05
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] However, the above-mentioned LED backlight control method is only limited to LCD display screens with backlight light sources, and is not suitable for LCDs that do not use backlight technology, so the application range is limited.

Method used

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  • Method and device for determining viewpoint area and controlling screen luminance
  • Method and device for determining viewpoint area and controlling screen luminance
  • Method and device for determining viewpoint area and controlling screen luminance

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Embodiment Construction

[0040] The basic idea of ​​the present invention is: the terminal obtains an image containing face information, and determines the position information related to the eyeball according to the image; according to the size of the terminal screen, the position information related to the eyeball, and the preset terminal screen The size of the eyeball and the distance information related to the eyeball determine the viewpoint area.

[0041] The embodiment of the present invention proposes a method for determining the viewpoint area, such as figure 1 As shown, the method includes:

[0042] Step 101: The terminal obtains an image containing face information, and according to the image, determines the vertical distance between the eyeball and the terminal screen, the offset orientation and offset distance of the eyeball's landing point on the terminal screen relative to the center point of the screen, and the relative distance between the pupils. The offset orientation and offset dis...

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Abstract

The invention discloses a method and a device for determining a viewpoint area and controlling screen luminance. The method comprises the following steps: a terminal obtains an image which contains human face information and determines position information relevant to eyeballs according to the image; and according to the size of the terminal screen, the position information relevant to the eyeballs, the preset size of the terminal screen and distance information relevant to the eyeballs, the viewpoint area is determined. The human face image of a user is captured through a camera of the terminal and is analyzed to determine the viewpoint area so as to omit auxiliary equipment, and the viewpoint area can be easily determined; when the viewpoint area is determined, influence on the viewpoint area by vertical distance between human eyes and the screen is considered so as to bring high accuracy; and the invention is suitable for various display screens so as to exhibit a wide application range.

Description

technical field [0001] The present invention relates to the field of terminal applications, in particular to a method and device for determining a viewpoint area and controlling screen brightness. Background technique [0002] At present, viewpoint tracking technology can be divided into two categories according to the means of implementation, which are based on hardware and software. Hardware-based viewpoint tracking technology requires users to wear special helmets, glasses and other devices, relying on the viewpoint sensors provided by these devices to obtain viewpoint data. The software method only needs the camera to assist in obtaining the human eye or face image, and then through various image processing algorithms to realize the detection, positioning and tracking of the human face and human eye in the image. The disadvantage of the hardware method is that it is highly dependent on special devices, which limits the freedom of the user. The disadvantage of the pure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/01G09G5/10
Inventor 潘诚
Owner CHINA MOBILE COMM GRP CO LTD
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