WO2018095147A1 - Method and device for labeling location of light point - Google Patents

Method and device for labeling location of light point Download PDF

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Publication number
WO2018095147A1
WO2018095147A1 PCT/CN2017/105026 CN2017105026W WO2018095147A1 WO 2018095147 A1 WO2018095147 A1 WO 2018095147A1 CN 2017105026 W CN2017105026 W CN 2017105026W WO 2018095147 A1 WO2018095147 A1 WO 2018095147A1
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projection point
display screen
light intensity
beam projection
color
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PCT/CN2017/105026
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French (fr)
Chinese (zh)
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运如靖
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广州视源电子科技股份有限公司
广州视睿电子科技有限公司
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Publication of WO2018095147A1 publication Critical patent/WO2018095147A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques

Definitions

  • the present invention relates to the field of computer technology, and in particular, to a method and apparatus for position marking of a beam projection point.
  • the presenter when using a large display for display, the presenter often needs to use a laser pointer to indicate the content on the large display to emphasize the content being explained and deepen the impression of the listener. Achieve better display results.
  • a laser pointer to indicate content in some displays (eg, liquid crystal display)
  • the laser spot projected by the laser pen cannot be displayed in the display due to the absorption of light by the display screen, or the laser spot displayed is very Blurring, unable to achieve the effect of indicating content, resulting in a bad user experience.
  • the invention provides a position marking method and device for a beam projection point, which can display a projection point of a laser beam projected into the display screen in a display screen, thereby improving the user experience.
  • the method for marking a position of a beam projection point specifically includes:
  • a position of the beam projection point on the display screen is determined based on each of the predicted distances, and a position marker is generated at the position.
  • calculating a beam projection point of the laser beam projected on the display screen and a pre-pressure of each of the light intensity detectors Measuring distance including:
  • the calculating according to the illumination intensity detected by each of the light intensity detectors, calculating a projection point of the beam projected on the display screen and a prediction of each of the intensity detectors Distance, including:
  • Light intensity I and second distance formula detected according to each of the intensity detectors Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
  • the determining, according to each of the predicted distances, a position of the beam projection point on the display screen, and generating a position mark on the position specifically including:
  • a position marker is generated at the location in a second color that is different from the default color of the default color.
  • the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
  • the present invention also provides a position marking device for a beam projection point, which specifically includes:
  • a light intensity obtaining module configured to receive, by the at least three light intensity detectors located at different positions of the display screen, respectively, corresponding to the light intensity of the laser beam projected on the display screen;
  • a prediction distance obtaining module configured to calculate, according to the illumination intensity detected by each of the light intensity detectors, a beam projection point on which the laser beam is projected on the display screen and each of the light intensity detectors Predicted distance;
  • a position marker generating module configured to determine a position of the beam projection point on the display screen according to each of the predicted distances, and generate a position marker at the position.
  • the prediction distance obtaining module specifically includes:
  • a parameter obtaining unit configured to obtain an angular frequency ⁇ and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors as well as,
  • a first distance obtaining unit for arranging the angular frequency ⁇ and the corresponding optical phase according to each And the first distance formula Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
  • the prediction distance obtaining module specifically includes:
  • a second distance obtaining unit configured to detect the light intensity I and the second distance formula according to each of the light intensity detectors Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
  • the location mark generating module specifically includes:
  • a position determining unit configured to determine a position of the beam projection point on the display screen according to each of the predicted distances
  • a position color obtaining unit for obtaining a hue of the first color at the position in the display screen
  • a chromatic phase difference judging unit configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold
  • a first position mark generating unit configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is greater than the threshold
  • a second position mark generating unit configured to: when the difference between the hue of the default color and the hue of the first color is not greater than the threshold, the second color is different from the preset second color Narrative Set the generation location marker.
  • the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
  • the method and device for position marking of a beam projection point obtained by the invention obtains a position of a beam projection point on a display screen according to the illumination intensity detected by the light intensity detector, and generates a corresponding position mark at the position, thereby enabling The projection point of the laser beam projected into the display is displayed in the display so that the user can clearly see the position pointed by the laser beam and improve the user experience.
  • FIG. 1 is a schematic flow chart of an embodiment of a method for marking a position of a beam projection point provided by the present invention
  • FIG. 2 is a schematic structural view of an embodiment of a position marking device for a beam projection point provided by the present invention.
  • FIG. 1 is a schematic flowchart of an embodiment of a method for marking a position of a beam projection point provided by the present invention, including steps S11 to S13, as follows:
  • S11 receiving, by the at least three light intensity detectors located at different positions of the display screen, respectively, the light intensity corresponding to the laser beam projected on the display screen;
  • S12 Calculate, according to the illumination intensity detected by each of the light intensity detectors, a predicted distance between a beam projection point projected by the laser beam on the display screen and each of the light intensity detectors;
  • S13 Determine, according to each of the predicted distances, a position of the beam projection point on the display screen, and generate a position mark at the position.
  • the position marking method of the beam projection point is performed by the system of the device.
  • the device has a display screen.
  • the system obtains the illumination of the beam projected onto the light detector by the beam projection point on the display by the light intensity detector disposed on the display.
  • the intensity and after determining the position of the beam projection point on the display screen based on the illumination intensity detected by each light intensity detector, generates a corresponding mark at the position to display the position of the beam projection point in the display screen.
  • the preset light intensity detector detects the light intensity of the light beam projected onto the light intensity detector on the display screen and will The detected light intensity is sent to the system for subsequent processing.
  • the number of light intensity detectors is not less than three, and different light intensity detectors are disposed at different positions of the display screen.
  • the system predicts the distance between the beam projection point and each of the intensity detectors based on the illumination intensity detected by each of the intensity detectors. Taking the distance between the system projection beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity sent by the light intensity detector, the system calculates and obtains the beam projection point and the light intensity detection according to the illumination intensity.
  • the predicted distance between the beam projection point and the other individual intensity detectors is calculated according to the same method.
  • the system obtains the pixel points in the display screen that are the predicted distances corresponding to the respective light intensity detectors, and the position of the pixel points is the light beam.
  • the location of the projection point is the system.
  • the system generates a position marker at the location of the determined beam projection point to display the position of the beam projection point in the display.
  • the system calculates the predicted distance d_A between the beam projection point and the light intensity detector A according to the illumination intensity a, and sequentially according to the illumination intensity b, c and in the same way.
  • d Calculate the predicted distance d_B between the beam projection point and the intensity detectors B, C and D, d_C and d_D. Subsequently, the system finds in the display screen that the distance from the light intensity detector A is d_A, the distance from the light intensity detector B is d_B, and the distance between the light intensity detector C is d_C, and The distance between the light intensity detectors D is the pixel point of d_D, and the position where the pixel point is located is determined as the position where the beam projection point is located. Finally, the system generates a location marker at that location.
  • the process of calculating the predicted distance between the beam projection point and the respective intensity detectors can be performed by the MCU in the device.
  • the calculating according to the illumination intensity detected by each of the light intensity detectors, calculating a projection point of the beam projected on the display screen and a prediction of each of the intensity detectors Distance, including:
  • the system predicts the distance between the beam projection point and each light intensity detector according to each light intensity. Taking the distance between the system projection beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity detected by the light intensity detector, the system calculates the projection from the beam projection point to the light according to the illumination intensity calculation. The angular frequency ⁇ and optical phase of the beam on a strong detector Subsequently, the system will calculate the angular frequency ⁇ and the optical phase of the obtained light. Substituting the first distance formula Medium, thereby calculating the predicted distance D between the beam projection point and the intensity detector. The predicted distance D between the beam projection point and the other individual intensity detectors is calculated in the same way.
  • c in the first distance formula is the speed of light
  • n is the refractive index of the atmosphere
  • the values are all preset in the system, and are all internationally recognized values.
  • the calculating according to the illumination intensity detected by each of the light intensity detectors, calculating a projection point of the beam projected on the display screen and a prediction of each of the intensity detectors Distance, including:
  • Light intensity I and second distance formula detected according to each of the intensity detectors Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
  • the system predicts the distance between the beam projection point and each light intensity detector according to each light intensity. Taking the distance between the system projection beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity I detected by the light intensity detector, the system substitutes the illumination intensity I into the second distance formula. Medium, thereby calculating the predicted distance d between the beam projection point and the intensity detector. The predicted distance d between the beam projection point and the other individual intensity detectors is calculated in the same way.
  • t in the second distance formula is atmospheric transmittance
  • H is the irradiance of the laser beam projected by the user
  • the values are all preset in the system, and are all internationally recognized values.
  • the determining the position of the beam projection point on the display screen according to each of the predicted distances, and generating a position marker on the position specifically includes:
  • a position marker is generated at the location in a second color that is different from the default color of the default color.
  • the system determines the position of the beam projection point in the display screen at this position. Generate a location marker. The system first obtains the hue of the color of the pixel at the position where the beam projection point is located in the display screen by using a tool such as a color picker or by pixel recognition, that is, the hue of the first color. Subsequently, the hue of the default color of the position marker to be generated at that position is obtained. The hue of the default color is preset by the user or administrator and stored in the system.
  • the system compares the obtained hue of the default color with the obtained hue of the first color, and if the difference between the hue of the default color and the hue of the first color is greater than a preset threshold, the position mark to be generated is considered
  • the color contrasts strongly with the background color, so a position mark with a default color is generated at the position where the beam projection point is located; if the difference between the hue of the default color and the hue of the first color is not greater than a preset threshold, then It is considered that the color of the position mark to be generated is weakly contrasted with the background color, so that the position mark of the second color of the preset color is generated at the position where the beam projection point is located.
  • the second color has a strong color difference from the default color (eg, when the default color is red, the second color is green).
  • corresponding position information for example, coordinate information, chromaticity information, etc.
  • the position where the projection point of the laser beam projected onto the screen can be displayed more clearly, thereby further improving the user experience.
  • the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
  • the laser beam projected by the user is usually an infrared laser beam, but in some application scenarios, the laser beam may also be a green laser beam, a blue laser beam, or the like. Each light intensity detector is placed on a different corner of the display.
  • the position marking method of the beam projection point obtained by the embodiment of the invention obtains the position of the beam projection point on the display screen according to the illumination intensity detected by the light intensity detector, and generates a corresponding position mark at the position, thereby enabling The projection point of the laser beam projected into the display is displayed in the display so that the user can clearly see the position pointed by the laser beam and improve the user experience.
  • the position where the projection point of the laser beam is projected onto the screen can be displayed more clearly, thereby further enhancing the user experience.
  • the present invention also provides a position marking device for a beam projection point, which is capable of realizing all the processes of the position marking method of the beam projection point in the above embodiment.
  • FIG. 2 is a schematic structural diagram of an embodiment of a position marking device for a beam projection point provided by the present invention, as follows:
  • the illumination intensity obtaining module 21 is configured to receive, by the at least three light intensity detectors located at different positions of the display screen, respectively, the illumination intensity corresponding to the laser beam projected on the display screen;
  • a prediction distance obtaining module 22 configured to calculate, according to the illumination intensity detected by each of the light intensity detectors, a beam projection point of the laser beam projected on the display screen and each of the light intensity detection Predicted distance of the device;
  • the position mark generating module 23 is configured to determine a position of the beam projection point on the display screen according to each of the predicted distances, and generate a position mark on the position.
  • the prediction distance obtaining module 22 specifically includes:
  • a parameter obtaining unit configured to obtain an angular frequency ⁇ and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors as well as,
  • a first distance obtaining unit for arranging the angular frequency ⁇ and the corresponding optical phase according to each And the first distance formula Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
  • the prediction distance obtaining module 22 specifically includes:
  • a second distance obtaining unit configured to detect the light intensity I and the second distance formula according to each of the light intensity detectors Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
  • the location mark generating module 23 specifically includes:
  • a position determining unit configured to determine a position of the beam projection point on the display screen according to each of the predicted distances
  • a position color obtaining unit for obtaining a hue of the first color at the position in the display screen
  • a chromatic phase difference judging unit configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold
  • a first position mark generating unit configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is greater than the threshold
  • a second position mark generating unit configured to: when the difference between the hue of the default color and the hue of the first color is not greater than the threshold, the second color is different from the preset second color A position marker is generated at the position.
  • the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
  • the position marking device for the beam projection point calculates the position of the beam projection point on the display screen according to the illumination intensity detected by the light intensity detector, and generates a corresponding position mark at the position, thereby enabling The projection point of the laser beam projected into the display is displayed in the display so that the user can clearly see the position pointed by the laser beam and improve the user experience.
  • the position where the projection point of the laser beam projected onto the screen can be more clearly displayed, thereby further improving user experience.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Position Input By Displaying (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

A method and device for labeling a location of a light projection point. The method of labeling a location of a light projection point comprises: receiving luminous intensities of a laser beam projected on the display screen and detected respectively by three or more luminous intensity detectors located at different locations at a display screen; computing, according to the luminous intensities detected by the luminous intensity detectors, predicted distances from the light projection point to the respective luminous intensity detectors at the display screen; and determining, according to the predicted distances, the location of the light projection point on the display screen, and generating at the location a location label. The embodiment can be utilized to display, at a display screen, a light projection point projected on the display screen, thereby enhancing user experience.

Description

光束投射点的位置标记方法和装置Position marking method and device for beam projection point 技术领域Technical field
本发明涉及计算机技术领域，尤其涉及一种光束投射点的位置标记方法和装置。The present invention relates to the field of computer technology, and in particular, to a method and apparatus for position marking of a beam projection point.
背景技术Background technique
在日常的教学或者商务会议等场景中，展示者在使用大显示屏进行展示的时候，常常需要使用激光笔指示该大显示屏上的内容，以强调正在讲解的内容，加深听众的印象，从而达到更好的展示效果。但是在采用激光笔在一些显示屏(如，液晶显示屏)中指示内容时，由于显示屏对光的吸收，在显示屏中无法显示激光笔所投射的激光点，或者所显示的激光点十分模糊，无法达到指示内容的效果，从而带来不好的用户体验。In daily teaching or business meetings, when using a large display for display, the presenter often needs to use a laser pointer to indicate the content on the large display to emphasize the content being explained and deepen the impression of the listener. Achieve better display results. However, when using a laser pointer to indicate content in some displays (eg, liquid crystal display), the laser spot projected by the laser pen cannot be displayed in the display due to the absorption of light by the display screen, or the laser spot displayed is very Blurring, unable to achieve the effect of indicating content, resulting in a bad user experience.
发明内容Summary of the invention
本发明提出一种光束投射点的位置标记方法和装置，能够在显示屏中显示激光束投射至该显示屏中的投射点，从而提高用户体验。The invention provides a position marking method and device for a beam projection point, which can display a projection point of a laser beam projected into the display screen in a display screen, thereby improving the user experience.
本发明提供的一种光束投射点的位置标记方法，具体包括：The method for marking a position of a beam projection point provided by the present invention specifically includes:
接收位于显示屏的不同位置的至少三个光强检测器分别检测到的相应于投射在所述显示屏上的激光束的光照强度；Receiving, by the at least three light intensity detectors located at different positions of the display screen, respectively, the light intensity corresponding to the laser beam projected on the display screen;
根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离；Obtaining, according to the illumination intensity detected by each of the light intensity detectors, obtaining a predicted distance between a beam projection point of the laser beam projected on the display screen and each of the light intensity detectors;
根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记。A position of the beam projection point on the display screen is determined based on each of the predicted distances, and a position marker is generated at the position.
进一步地，所述根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预 测距离，具体包括：Further, according to the illumination intensity detected by each of the light intensity detectors, calculating a beam projection point of the laser beam projected on the display screen and a pre-pressure of each of the light intensity detectors Measuring distance, including:
根据每个所述光强检测器检测得到的所述光照强度，获得每个所述光强检测器检测到的光束的角频率ω和光相位
Figure PCTCN2017105026-appb-000001
Obtaining an angular frequency ω and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors
Figure PCTCN2017105026-appb-000001
根据每个所述角频率ω和相应的所述光相位
Figure PCTCN2017105026-appb-000002
以及第一距离公式
Figure PCTCN2017105026-appb-000003
计算获得所述光束投射点与每个所述光强检测器的预测距离D；其中，c为光速；n为大气折射系数。According to each of said angular frequency ω and corresponding said optical phase
Figure PCTCN2017105026-appb-000002
And the first distance formula
Figure PCTCN2017105026-appb-000003
Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
进一步地，所述根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离，具体包括：Further, the calculating, according to the illumination intensity detected by each of the light intensity detectors, calculating a projection point of the beam projected on the display screen and a prediction of each of the intensity detectors Distance, including:
根据每个所述光强检测器检测得到的光照强度I及第二距离公式
Figure PCTCN2017105026-appb-000004
计算获得所述光束投射点与每个所述光强检测器的预测距离d；其中，t为大气透射率；H为所述激光束的辐照度。Light intensity I and second distance formula detected according to each of the intensity detectors
Figure PCTCN2017105026-appb-000004
Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
进一步地，所述根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记，具体包括：Further, the determining, according to each of the predicted distances, a position of the beam projection point on the display screen, and generating a position mark on the position, specifically including:
根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置；Determining, according to each of the predicted distances, a position of the beam projection point on the display screen;
获得所述显示屏中的所述位置上的第一颜色的色相；Obtaining a hue of the first color at the location in the display screen;
判断将要在所述位置上生成的位置标记的默认颜色的色相与所述第一颜色的色相的差是否大于预设的阈值；Determining whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
若是，则以所述默认颜色在所述位置上生成位置标记；If yes, generating a position marker at the position in the default color;
若否，则以相异于所述默认颜色的预设的第二颜色在所述位置上生成位置标记。If not, a position marker is generated at the location in a second color that is different from the default color of the default color.
进一步地，所述激光束为红外激光束；所述光强检测器设置于所述显示屏的不同的边角上。Further, the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
相应地，本发明还提供了一种光束投射点的位置标记装置，具体包括：Correspondingly, the present invention also provides a position marking device for a beam projection point, which specifically includes:
光照强度获得模块，用于接收位于显示屏的不同位置的至少三个光强检测器分别检测到的相应于投射在所述显示屏上的激光束的光照强度； a light intensity obtaining module, configured to receive, by the at least three light intensity detectors located at different positions of the display screen, respectively, corresponding to the light intensity of the laser beam projected on the display screen;
预测距离获得模块，用于根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离；以及，a prediction distance obtaining module, configured to calculate, according to the illumination intensity detected by each of the light intensity detectors, a beam projection point on which the laser beam is projected on the display screen and each of the light intensity detectors Predicted distance; and,
位置标记生成模块，用于根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记。And a position marker generating module, configured to determine a position of the beam projection point on the display screen according to each of the predicted distances, and generate a position marker at the position.
进一步地，所述预测距离获得模块，具体包括：Further, the prediction distance obtaining module specifically includes:
参数获得单元，用于根据每个所述光强检测器检测得到的所述光照强度，获得每个所述光强检测器检测到的光束的角频率ω和光相位
Figure PCTCN2017105026-appb-000005
以及，a parameter obtaining unit, configured to obtain an angular frequency ω and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors
Figure PCTCN2017105026-appb-000005
as well as,
第一距离获得单元，用于根据每个所述角频率ω和相应的所述光相位
Figure PCTCN2017105026-appb-000006
以及第一距离公式
Figure PCTCN2017105026-appb-000007
计算获得所述光束投射点与每个所述光强检测器的预测距离D；其中，c为光速；n为大气折射系数。a first distance obtaining unit for arranging the angular frequency ω and the corresponding optical phase according to each
Figure PCTCN2017105026-appb-000006
And the first distance formula
Figure PCTCN2017105026-appb-000007
Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
进一步地，所述预测距离获得模块，具体包括：Further, the prediction distance obtaining module specifically includes:
第二距离获得单元，用于根据每个所述光强检测器检测得到的光照强度I及第二距离公式
Figure PCTCN2017105026-appb-000008
计算获得所述光束投射点与每个所述光强检测器的预测距离d；其中，t为大气透射率；H为所述激光束的辐照度。a second distance obtaining unit, configured to detect the light intensity I and the second distance formula according to each of the light intensity detectors
Figure PCTCN2017105026-appb-000008
Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
进一步地，所述位置标记生成模块，具体包括：Further, the location mark generating module specifically includes:
位置确定单元，用于根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置；a position determining unit, configured to determine a position of the beam projection point on the display screen according to each of the predicted distances;
位置颜色获得单元，用于获得所述显示屏中的所述位置上的第一颜色的色相；a position color obtaining unit for obtaining a hue of the first color at the position in the display screen;
色相差判断单元，用于判断将要在所述位置上生成的位置标记的默认颜色的色相与所述第一颜色的色相的差是否大于预设的阈值；a chromatic phase difference judging unit, configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
第一位置标记生成单元，用于当所述默认颜色的色相与所述第一颜色的色相的差大于所述阈值时，以所述默认颜色在所述位置上生成位置标记；或者，a first position mark generating unit, configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is greater than the threshold; or
第二位置标记生成单元，用于当所述默认颜色的色相与所述第一颜色的色相的差不大于所述阈值时，以相异于所述默认颜色的预设的第二颜色在所述位 置上生成位置标记。a second position mark generating unit, configured to: when the difference between the hue of the default color and the hue of the first color is not greater than the threshold, the second color is different from the preset second color Narrative Set the generation location marker.
进一步地，所述激光束为红外激光束；所述光强检测器设置于所述显示屏的不同的边角上。Further, the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
实施本发明，具有如下有益效果：The implementation of the present invention has the following beneficial effects:
本发明提供的光束投射点的位置标记方法及装置，通过根据光强检测器检测到的光照强度计算获得光束投射点在显示屏上的位置，并在该位置上生成相应的位置标记，从而能够在显示屏中显示激光束投射至该显示屏中的投射点，使得用户能够清晰地看到激光束所指的位置，提高用户体验。The method and device for position marking of a beam projection point provided by the invention obtains a position of a beam projection point on a display screen according to the illumination intensity detected by the light intensity detector, and generates a corresponding position mark at the position, thereby enabling The projection point of the laser beam projected into the display is displayed in the display so that the user can clearly see the position pointed by the laser beam and improve the user experience.
附图说明DRAWINGS
图1是本发明提供的光束投射点的位置标记方法的一个实施例的流程示意图；1 is a schematic flow chart of an embodiment of a method for marking a position of a beam projection point provided by the present invention;
图2是本发明提供的光束投射点的位置标记装置的一个实施例的结构示意图。2 is a schematic structural view of an embodiment of a position marking device for a beam projection point provided by the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
参见图1，是本发明提供的光束投射点的位置标记方法的一个实施例的流程示意图，包括步骤S11至S13，具体如下：1 is a schematic flowchart of an embodiment of a method for marking a position of a beam projection point provided by the present invention, including steps S11 to S13, as follows:
S11：接收位于显示屏的不同位置的至少三个光强检测器分别检测到的相应于投射在所述显示屏上的激光束的光照强度；S11: receiving, by the at least three light intensity detectors located at different positions of the display screen, respectively, the light intensity corresponding to the laser beam projected on the display screen;
S12：根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离； S12: Calculate, according to the illumination intensity detected by each of the light intensity detectors, a predicted distance between a beam projection point projected by the laser beam on the display screen and each of the light intensity detectors;
S13：根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记。S13: Determine, according to each of the predicted distances, a position of the beam projection point on the display screen, and generate a position mark at the position.
需要说明的是，本实施例提供的光束投射点的位置标记方法由设备的系统执行。其中，该设备具有显示屏。当用户将激光束投射至显示屏上以指示显示屏中的内容时，系统通过设置在显示屏上的光强检测器获得显示屏上的光束投射点投射至光强检测器上的光束的光照强度，并在根据各个光强检测器检测到的光照强度确定光束投射点在显示屏上的位置之后，在该位置上生成相应的标记，从而在显示屏中显示出光束投射点的位置。It should be noted that the position marking method of the beam projection point provided by this embodiment is performed by the system of the device. Among them, the device has a display screen. When the user projects a laser beam onto the display to indicate what is in the display, the system obtains the illumination of the beam projected onto the light detector by the beam projection point on the display by the light intensity detector disposed on the display. The intensity, and after determining the position of the beam projection point on the display screen based on the illumination intensity detected by each light intensity detector, generates a corresponding mark at the position to display the position of the beam projection point in the display screen.
在一个优选地实施方式中，当用户将激光束投射至显示屏上时，预先设置的光强检测器检测显示屏上的光束投射点投射至光强检测器上的光束的光照强度，并将所检测到的光照强度发送至系统中进行后续处理。其中，光强检测器的数量不少于三个，且不同光强检测器设置于显示屏的不同位置上。随后，系统根据各个光强检测器所检测到的光照强度预测光束投射点与各个光强检测器之间的距离。以系统预测光束投射点与其中一个光强检测器之间的距离为例，系统在接收到该光强检测器发送的光照强度之后，根据该光照强度，计算获得光束投射点与该光强检测器之间的预测距离。光束投射点与其他各个光强检测器之间的预测距离均依照相同的方法计算获得。随后，系统根据计算获得的各个预测距离，获得显示屏中的与各个光强检测器之间的距离为各个光强检测器所对应的预测距离的像素点，该像素点所在的位置即为光束投射点所在的位置。最后，系统在所确定的光束投射点所在的位置上生成位置标记，从而在显示屏中显示光束投射点的位置。In a preferred embodiment, when the user projects the laser beam onto the display screen, the preset light intensity detector detects the light intensity of the light beam projected onto the light intensity detector on the display screen and will The detected light intensity is sent to the system for subsequent processing. Wherein, the number of light intensity detectors is not less than three, and different light intensity detectors are disposed at different positions of the display screen. Subsequently, the system predicts the distance between the beam projection point and each of the intensity detectors based on the illumination intensity detected by each of the intensity detectors. Taking the distance between the system projection beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity sent by the light intensity detector, the system calculates and obtains the beam projection point and the light intensity detection according to the illumination intensity. The predicted distance between the devices. The predicted distance between the beam projection point and the other individual intensity detectors is calculated according to the same method. Then, according to the calculated prediction distances obtained by the system, the system obtains the pixel points in the display screen that are the predicted distances corresponding to the respective light intensity detectors, and the position of the pixel points is the light beam. The location of the projection point. Finally, the system generates a position marker at the location of the determined beam projection point to display the position of the beam projection point in the display.
例如，假设显示屏的四个角分别设置有光强检测器A、B、C和D，那么当用户将激光束投射至显示屏上时，光强检测器A、B、C和D分别检测到光照强度a、b、c和d。光强检测器A、B、C和D将所各自所检测到的光照强度发送给系统。系统在接收到光照强度a、b、c和d后，根据光照强度a计算获得光束投射点与光强检测器A之间的预测距离d_A，并以相同的方法依次根据光照强度b、c和d计算获得光束投射点与光强检测器B、C和D之间的预测距离d_B、 d_C和d_D。随后，系统在显示屏中查找到与光强检测器A之间的距离为d_A、与光强检测器B之间的距离为d_B、与光强检测器C之间的距离为d_C，且与光强检测器D之间的距离为d_D的像素点，并将该像素点所在的位置确定为光束投射点所在的位置。最后，系统在该位置上生成位置标记。For example, assuming that the four corners of the display are respectively provided with light intensity detectors A, B, C and D, then when the user projects the laser beam onto the display, the light intensity detectors A, B, C and D respectively detect To the light intensity a, b, c and d. Light intensity detectors A, B, C and D transmit the respective detected light intensities to the system. After receiving the illumination intensity a, b, c and d, the system calculates the predicted distance d_A between the beam projection point and the light intensity detector A according to the illumination intensity a, and sequentially according to the illumination intensity b, c and in the same way. d Calculate the predicted distance d_B between the beam projection point and the intensity detectors B, C and D, d_C and d_D. Subsequently, the system finds in the display screen that the distance from the light intensity detector A is d_A, the distance from the light intensity detector B is d_B, and the distance between the light intensity detector C is d_C, and The distance between the light intensity detectors D is the pixel point of d_D, and the position where the pixel point is located is determined as the position where the beam projection point is located. Finally, the system generates a location marker at that location.
需要进一步说明的是，计算光束投射点与各个光强检测器之间的预测距离的过程可以由设备中的MCU执行。It should be further noted that the process of calculating the predicted distance between the beam projection point and the respective intensity detectors can be performed by the MCU in the device.
通过根据光强检测器检测到的光照强度计算获得光束投射点在显示屏上的位置，并在该位置上生成相应的位置标记，从而能够在显示屏中显示激光束投射至该显示屏中的投射点，使得用户能够清晰地看到激光束所指的位置，提高用户体验。Calculating the position of the beam projection point on the display screen according to the illumination intensity detected by the light intensity detector, and generating a corresponding position mark at the position, so that the laser beam can be projected into the display screen in the display screen. The projection point allows the user to clearly see the position pointed by the laser beam and improve the user experience.
进一步地，所述根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离，具体包括：Further, the calculating, according to the illumination intensity detected by each of the light intensity detectors, calculating a projection point of the beam projected on the display screen and a prediction of each of the intensity detectors Distance, including:
根据每个所述光强检测器检测得到的所述光照强度，获得每个所述光强检测器检测到的光束的角频率ω和光相位
Figure PCTCN2017105026-appb-000009
Obtaining an angular frequency ω and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors
Figure PCTCN2017105026-appb-000009
根据每个所述角频率ω和相应的所述光相位
Figure PCTCN2017105026-appb-000010
以及第一距离公式
Figure PCTCN2017105026-appb-000011
计算获得所述光束投射点与每个所述光强检测器的预测距离D；其中，c为光速；n为大气折射系数。According to each of said angular frequency ω and corresponding said optical phase
Figure PCTCN2017105026-appb-000010
And the first distance formula
Figure PCTCN2017105026-appb-000011
Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
需要说明的是，系统在接收到各个光强检测器检测到的光照强度后，根据各个光照强度预测光束投射点与各个光强检测器之间的距离。以系统预测光束投射点与其中一个光强检测器之间的距离为例，系统在接收到该光强检测器检测到的光照强度之后，根据该光照强度计算获得从光束投射点投射至该光强检测器上的光束的角频率ω和光相位
Figure PCTCN2017105026-appb-000012
随后，系统将计算获得的光的角频率ω和光相位
Figure PCTCN2017105026-appb-000013
代入第一距离公式
Figure PCTCN2017105026-appb-000014
中，从而计算获得光束投射点与该光强检测器之间的预测距离D。光束投射点与其他各个光强检测器之间的预测距离D均依照相同的方法计算获得。其中，该第一距离公式中的c为光速，n为大 气折射率，其数值均预先设置于系统中，且均为国际公认值。It should be noted that after receiving the light intensity detected by each light intensity detector, the system predicts the distance between the beam projection point and each light intensity detector according to each light intensity. Taking the distance between the system projection beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity detected by the light intensity detector, the system calculates the projection from the beam projection point to the light according to the illumination intensity calculation. The angular frequency ω and optical phase of the beam on a strong detector
Figure PCTCN2017105026-appb-000012
Subsequently, the system will calculate the angular frequency ω and the optical phase of the obtained light.
Figure PCTCN2017105026-appb-000013
Substituting the first distance formula
Figure PCTCN2017105026-appb-000014
Medium, thereby calculating the predicted distance D between the beam projection point and the intensity detector. The predicted distance D between the beam projection point and the other individual intensity detectors is calculated in the same way. Wherein, c in the first distance formula is the speed of light, and n is the refractive index of the atmosphere, and the values are all preset in the system, and are all internationally recognized values.
进一步地，所述根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离，具体包括：Further, the calculating, according to the illumination intensity detected by each of the light intensity detectors, calculating a projection point of the beam projected on the display screen and a prediction of each of the intensity detectors Distance, including:
根据每个所述光强检测器检测得到的光照强度I及第二距离公式
Figure PCTCN2017105026-appb-000015
计算获得所述光束投射点与每个所述光强检测器的预测距离d；其中，t为大气透射率；H为所述激光束的辐照度。Light intensity I and second distance formula detected according to each of the intensity detectors
Figure PCTCN2017105026-appb-000015
Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
需要说明的是，系统在接收到各个光强检测器检测到的光照强度后，根据各个光照强度预测光束投射点与各个光强检测器之间的距离。以系统预测光束投射点与其中一个光强检测器之间的距离为例，系统在接收到该光强检测器检测到的光照强度I之后，将该光照强度I代入第二距离公式
Figure PCTCN2017105026-appb-000016
中，从而计算获得光束投射点与该光强检测器之间的预测距离d。光束投射点与其他各个光强检测器之间的预测距离d均依照相同的方法计算获得。其中，该第二距离公式中的t为大气透射率，H为用户所投射的激光束的辐照度，其数值均预先设置于系统中，且均为国际公认值。It should be noted that after receiving the light intensity detected by each light intensity detector, the system predicts the distance between the beam projection point and each light intensity detector according to each light intensity. Taking the distance between the system projection beam projection point and one of the light intensity detectors as an example, after receiving the illumination intensity I detected by the light intensity detector, the system substitutes the illumination intensity I into the second distance formula.
Figure PCTCN2017105026-appb-000016
Medium, thereby calculating the predicted distance d between the beam projection point and the intensity detector. The predicted distance d between the beam projection point and the other individual intensity detectors is calculated in the same way. Wherein, t in the second distance formula is atmospheric transmittance, and H is the irradiance of the laser beam projected by the user, and the values are all preset in the system, and are all internationally recognized values.
在另一个优选地实施方式中，所述根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记，具体包括：In another preferred embodiment, the determining the position of the beam projection point on the display screen according to each of the predicted distances, and generating a position marker on the position, specifically includes:
根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置；Determining, according to each of the predicted distances, a position of the beam projection point on the display screen;
获得所述显示屏中的所述位置上的第一颜色的色相；Obtaining a hue of the first color at the location in the display screen;
判断将要在所述位置上生成的位置标记的默认颜色的色相与所述第一颜色的色相的差是否大于预设的阈值；Determining whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
若是，则以所述默认颜色在所述位置上生成位置标记；If yes, generating a position marker at the position in the default color;
若否，则以相异于所述默认颜色的预设的第二颜色在所述位置上生成位置标记。If not, a position marker is generated at the location in a second color that is different from the default color of the default color.
需要说明的是，系统在确定光束投射点在显示屏中的位置后，在该位置上 生成位置标记。系统首先采用取色器等工具或者通过像素识别等方式获得显示屏中的光束投射点所在的位置的像素点的颜色的色相，即为第一颜色的色相。随后，获得将要在该位置上生成的位置标记的默认颜色的色相。该默认颜色的色相由用户或者管理员预先设置并存储于系统中。系统将所获得的默认颜色的色相与所获得的第一颜色的色相进行对比，若默认颜色的色相与第一颜色的色相之间的差值大于预设的阈值，则认为将要生成的位置标记的颜色与背景颜色对比强烈，因此在光束投射点所在的位置上生成颜色为默认颜色的位置标记；若默认颜色的色相与第一颜色的色相之间的差值不大于预设的阈值，则认为将要生成的位置标记的颜色与背景颜色对比微弱，因此在光束投射点所在的位置上生成颜色为预设的第二颜色的位置标记。其中，该第二颜色与默认颜色具有强烈的色差(如，当默认颜色为红色时，第二颜色为绿色)。It should be noted that the system determines the position of the beam projection point in the display screen at this position. Generate a location marker. The system first obtains the hue of the color of the pixel at the position where the beam projection point is located in the display screen by using a tool such as a color picker or by pixel recognition, that is, the hue of the first color. Subsequently, the hue of the default color of the position marker to be generated at that position is obtained. The hue of the default color is preset by the user or administrator and stored in the system. The system compares the obtained hue of the default color with the obtained hue of the first color, and if the difference between the hue of the default color and the hue of the first color is greater than a preset threshold, the position mark to be generated is considered The color contrasts strongly with the background color, so a position mark with a default color is generated at the position where the beam projection point is located; if the difference between the hue of the default color and the hue of the first color is not greater than a preset threshold, then It is considered that the color of the position mark to be generated is weakly contrasted with the background color, so that the position mark of the second color of the preset color is generated at the position where the beam projection point is located. Wherein, the second color has a strong color difference from the default color (eg, when the default color is red, the second color is green).
需要进一步说明的是，在光束投射点所在的位置上生成位置标记的同时，还可以生成并显示相应的位置信息(如，坐标信息、色度信息等)。It should be further explained that at the same time as the position mark is generated at the position where the beam projection point is located, corresponding position information (for example, coordinate information, chromaticity information, etc.) can be generated and displayed.
通过在显示屏中的光束投射点所在的位置上生成与背景颜色具有强烈色差的位置标记，使得激光束投射至屏幕上的投射点所在的位置能够更加清晰地被显示出来，从而进一步提高用户体验。By creating a position mark with a strong color difference from the background color at the position where the beam projection point in the display screen is located, the position where the projection point of the laser beam projected onto the screen can be displayed more clearly, thereby further improving the user experience. .
进一步地，所述激光束为红外激光束；所述光强检测器设置于所述显示屏的不同的边角上。Further, the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
需要说明的是，用户所投射的激光束通常为红外激光束，但在某些应用场景中，该激光束还可以为绿激光束、蓝激光束等。每个光强检测器设置于显示器的不同的边角上。It should be noted that the laser beam projected by the user is usually an infrared laser beam, but in some application scenarios, the laser beam may also be a green laser beam, a blue laser beam, or the like. Each light intensity detector is placed on a different corner of the display.
本发明实施例提供的光束投射点的位置标记方法，通过根据光强检测器检测到的光照强度计算获得光束投射点在显示屏上的位置，并在该位置上生成相应的位置标记，从而能够在显示屏中显示激光束投射至该显示屏中的投射点，使得用户能够清晰地看到激光束所指的位置，提高用户体验。另外，通过在显示屏中的光束投射点所在的位置上生成与背景颜色具有强烈色差的位置标记， 使得激光束投射至屏幕上的投射点所在的位置能够更加清晰地被显示出来，从而进一步提高用户体验。The position marking method of the beam projection point provided by the embodiment of the invention obtains the position of the beam projection point on the display screen according to the illumination intensity detected by the light intensity detector, and generates a corresponding position mark at the position, thereby enabling The projection point of the laser beam projected into the display is displayed in the display so that the user can clearly see the position pointed by the laser beam and improve the user experience. In addition, by generating a position mark having a strong color difference from the background color at the position where the beam projection point in the display screen is located, The position where the projection point of the laser beam is projected onto the screen can be displayed more clearly, thereby further enhancing the user experience.
相应地，本发明还提供一种光束投射点的位置标记装置，能够实现上述实施例中的光束投射点的位置标记方法的所有流程。Accordingly, the present invention also provides a position marking device for a beam projection point, which is capable of realizing all the processes of the position marking method of the beam projection point in the above embodiment.
参见图2，是本发明提供的光束投射点的位置标记装置的一个实施例的结构示意图，具体如下：2 is a schematic structural diagram of an embodiment of a position marking device for a beam projection point provided by the present invention, as follows:
光照强度获得模块21，用于接收位于显示屏的不同位置的至少三个光强检测器分别检测到的相应于投射在所述显示屏上的激光束的光照强度；The illumination intensity obtaining module 21 is configured to receive, by the at least three light intensity detectors located at different positions of the display screen, respectively, the illumination intensity corresponding to the laser beam projected on the display screen;
预测距离获得模块22，用于根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离；以及，a prediction distance obtaining module 22, configured to calculate, according to the illumination intensity detected by each of the light intensity detectors, a beam projection point of the laser beam projected on the display screen and each of the light intensity detection Predicted distance of the device; and,
位置标记生成模块23，用于根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记。The position mark generating module 23 is configured to determine a position of the beam projection point on the display screen according to each of the predicted distances, and generate a position mark on the position.
进一步地，所述预测距离获得模块22，具体包括：Further, the prediction distance obtaining module 22 specifically includes:
参数获得单元，用于根据每个所述光强检测器检测得到的所述光照强度，获得每个所述光强检测器检测到的光束的角频率ω和光相位
Figure PCTCN2017105026-appb-000017
以及，a parameter obtaining unit, configured to obtain an angular frequency ω and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors
Figure PCTCN2017105026-appb-000017
as well as,
第一距离获得单元，用于根据每个所述角频率ω和相应的所述光相位
Figure PCTCN2017105026-appb-000018
以及第一距离公式
Figure PCTCN2017105026-appb-000019
计算获得所述光束投射点与每个所述光强检测器的预测距离D；其中，c为光速；n为大气折射系数。a first distance obtaining unit for arranging the angular frequency ω and the corresponding optical phase according to each
Figure PCTCN2017105026-appb-000018
And the first distance formula
Figure PCTCN2017105026-appb-000019
Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
进一步地，所述预测距离获得模块22，具体包括：Further, the prediction distance obtaining module 22 specifically includes:
第二距离获得单元，用于根据每个所述光强检测器检测得到的光照强度I及第二距离公式
Figure PCTCN2017105026-appb-000020
计算获得所述光束投射点与每个所述光强检测器的预测距离d；其中，t为大气透射率；H为所述激光束的辐照度。a second distance obtaining unit, configured to detect the light intensity I and the second distance formula according to each of the light intensity detectors
Figure PCTCN2017105026-appb-000020
Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
在另一个优选地实施方式中，所述位置标记生成模块23，具体包括：In another preferred embodiment, the location mark generating module 23 specifically includes:
位置确定单元，用于根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置； a position determining unit, configured to determine a position of the beam projection point on the display screen according to each of the predicted distances;
位置颜色获得单元，用于获得所述显示屏中的所述位置上的第一颜色的色相；a position color obtaining unit for obtaining a hue of the first color at the position in the display screen;
色相差判断单元，用于判断将要在所述位置上生成的位置标记的默认颜色的色相与所述第一颜色的色相的差是否大于预设的阈值；a chromatic phase difference judging unit, configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
第一位置标记生成单元，用于当所述默认颜色的色相与所述第一颜色的色相的差大于所述阈值时，以所述默认颜色在所述位置上生成位置标记；或者，a first position mark generating unit, configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is greater than the threshold; or
第二位置标记生成单元，用于当所述默认颜色的色相与所述第一颜色的色相的差不大于所述阈值时，以相异于所述默认颜色的预设的第二颜色在所述位置上生成位置标记。a second position mark generating unit, configured to: when the difference between the hue of the default color and the hue of the first color is not greater than the threshold, the second color is different from the preset second color A position marker is generated at the position.
进一步地，所述激光束为红外激光束；所述光强检测器设置于所述显示屏的不同的边角上。Further, the laser beam is an infrared laser beam; the light intensity detector is disposed on different corners of the display screen.
本发明实施例提供的光束投射点的位置标记装置，通过根据光强检测器检测到的光照强度计算获得光束投射点在显示屏上的位置，并在该位置上生成相应的位置标记，从而能够在显示屏中显示激光束投射至该显示屏中的投射点，使得用户能够清晰地看到激光束所指的位置，提高用户体验。另外，通过在显示屏中的光束投射点所在的位置上生成与背景颜色具有强烈色差的位置标记，使得激光束投射至屏幕上的投射点所在的位置能够更加清晰地被显示出来，从而进一步提高用户体验。The position marking device for the beam projection point provided by the embodiment of the present invention calculates the position of the beam projection point on the display screen according to the illumination intensity detected by the light intensity detector, and generates a corresponding position mark at the position, thereby enabling The projection point of the laser beam projected into the display is displayed in the display so that the user can clearly see the position pointed by the laser beam and improve the user experience. In addition, by generating a position mark having a strong color difference with the background color at the position where the beam projection point in the display screen is located, the position where the projection point of the laser beam projected onto the screen can be more clearly displayed, thereby further improving user experience.
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。 The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. The scope of protection of the present invention.

Claims (10)

  1. 一种光束投射点的位置标记方法，其特征在于，包括：A position marking method for a beam projection point, comprising:
    接收位于显示屏的不同位置的至少三个光强检测器分别检测到的相应于投射在所述显示屏上的激光束的光照强度；Receiving, by the at least three light intensity detectors located at different positions of the display screen, respectively, the light intensity corresponding to the laser beam projected on the display screen;
    根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离；Obtaining, according to the illumination intensity detected by each of the light intensity detectors, obtaining a predicted distance between a beam projection point of the laser beam projected on the display screen and each of the light intensity detectors;
    根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记。A position of the beam projection point on the display screen is determined based on each of the predicted distances, and a position marker is generated at the position.
  2. 如权利要求1所述的光束投射点的位置标记方法，其特征在于，所述根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离，具体包括：The position marking method of a beam projection point according to claim 1, wherein the laser beam is projected on the display screen according to the illumination intensity detected by each of the light intensity detectors. The predicted distance between the beam projection point and each of the intensity detectors includes:
    根据每个所述光强检测器检测得到的所述光照强度，获得每个所述光强检测器检测到的光束的角频率ω和光相位
    Figure PCTCN2017105026-appb-100001
    Obtaining an angular frequency ω and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors
    Figure PCTCN2017105026-appb-100001
    根据每个所述角频率ω和相应的所述光相位
    Figure PCTCN2017105026-appb-100002
    以及第一距离公式
    Figure PCTCN2017105026-appb-100003
    计算获得所述光束投射点与每个所述光强检测器的预测距离D；其中，c为光速；n为大气折射系数。    According to each of said angular frequency ω and corresponding said optical phase
    Figure PCTCN2017105026-appb-100002
    And the first distance formula
    Figure PCTCN2017105026-appb-100003
    Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
  3. 如权利要求1所述的光束投射点的位置标记方法，其特征在于，所述根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离，具体包括：The position marking method of a beam projection point according to claim 1, wherein the laser beam is projected on the display screen according to the illumination intensity detected by each of the light intensity detectors. The predicted distance between the beam projection point and each of the intensity detectors includes:
    根据每个所述光强检测器检测得到的光照强度I及第二距离公式
    Figure PCTCN2017105026-appb-100004
    计算获得所述光束投射点与每个所述光强检测器的预测距离d；其中，t为大气透射率；H为所述激光束的辐照度。    Light intensity I and second distance formula detected according to each of the intensity detectors
    Figure PCTCN2017105026-appb-100004
    Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
  4. 如权利要求1所述的光束投射点的位置标记方法，其特征在于，所述根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述 位置上生成位置标记，具体包括：The position marking method of a beam projection point according to claim 1, wherein said determining a position of said beam projection point on said display screen according to each of said predicted distances, and Generate location markers on the location, including:
    根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置；Determining, according to each of the predicted distances, a position of the beam projection point on the display screen;
    获得所述显示屏中的所述位置上的第一颜色的色相；Obtaining a hue of the first color at the location in the display screen;
    判断将要在所述位置上生成的位置标记的默认颜色的色相与所述第一颜色的色相的差是否大于预设的阈值；Determining whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
    若是，则以所述默认颜色在所述位置上生成位置标记；If yes, generating a position marker at the position in the default color;
    若否，则以相异于所述默认颜色的预设的第二颜色在所述位置上生成位置标记。If not, a position marker is generated at the location in a second color that is different from the default color of the default color.
  5. 如权利要求1至4中任一项所述的光束投射点的位置标记方法，其特征在于，所述激光束为红外激光束；所述光强检测器设置于所述显示屏的不同的边角上。The position marking method of a beam projection point according to any one of claims 1 to 4, wherein the laser beam is an infrared laser beam; and the light intensity detector is disposed at different sides of the display screen On the corner.
  6. 一种光束投射点的位置标记装置，其特征在于，包括：A position marking device for a beam projection point, comprising:
    光照强度获得模块，用于接收位于显示屏的不同位置的至少三个光强检测器分别检测到的相应于投射在所述显示屏上的激光束的光照强度；a light intensity obtaining module, configured to receive, by the at least three light intensity detectors located at different positions of the display screen, respectively, corresponding to the light intensity of the laser beam projected on the display screen;
    预测距离获得模块，用于根据每个所述光强检测器检测得到的所述光照强度，计算获得所述激光束投射在所述显示屏上的光束投射点与每个所述光强检测器的预测距离；以及，a prediction distance obtaining module, configured to calculate, according to the illumination intensity detected by each of the light intensity detectors, a beam projection point on which the laser beam is projected on the display screen and each of the light intensity detectors Predicted distance; and,
    位置标记生成模块，用于根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置，并在所述位置上生成位置标记。And a position marker generating module, configured to determine a position of the beam projection point on the display screen according to each of the predicted distances, and generate a position marker at the position.
  7. 如权利要求6所述的光束投射点的位置标记装置，其特征在于，所述预测距离获得模块，具体包括：The position marking device of the beam projection point according to claim 6, wherein the prediction distance obtaining module comprises:
    参数获得单元，用于根据每个所述光强检测器检测得到的所述光照强度，获得每个所述光强检测器检测到的光束的角频率ω和光相位
    Figure PCTCN2017105026-appb-100005
    以及，    a parameter obtaining unit, configured to obtain an angular frequency ω and an optical phase of the light beam detected by each of the light intensity detectors according to the illumination intensity detected by each of the light intensity detectors
    Figure PCTCN2017105026-appb-100005
    as well as,
    第一距离获得单元，用于根据每个所述角频率ω和相应的所述光相位
    Figure PCTCN2017105026-appb-100006
    以及 第一距离公式
    Figure PCTCN2017105026-appb-100007
    计算获得所述光束投射点与每个所述光强检测器的预测距离D；其中，c为光速；n为大气折射系数。    a first distance obtaining unit for arranging the angular frequency ω and the corresponding optical phase according to each
    Figure PCTCN2017105026-appb-100006
    And the first distance formula
    Figure PCTCN2017105026-appb-100007
    Calculating a predicted distance D of the beam projection point and each of the intensity detectors; wherein c is the speed of light; n is the atmospheric refractive index.
  8. 如权利要求6所述的光束投射点的位置标记装置，其特征在于，所述预测距离获得模块，具体包括：The position marking device of the beam projection point according to claim 6, wherein the prediction distance obtaining module comprises:
    第二距离获得单元，用于根据每个所述光强检测器检测得到的光照强度I及第二距离公式
    Figure PCTCN2017105026-appb-100008
    计算获得所述光束投射点与每个所述光强检测器的预测距离d；其中，t为大气透射率；H为所述激光束的辐照度。    a second distance obtaining unit, configured to detect the light intensity I and the second distance formula according to each of the light intensity detectors
    Figure PCTCN2017105026-appb-100008
    Calculating a predicted distance d of the beam projection point and each of the intensity detectors; wherein t is an atmospheric transmittance; and H is an irradiance of the laser beam.
  9. 如权利要求6所述的光束投射点的位置标记装置，其特征在于，所述位置标记生成模块，具体包括：The position marking device of the beam projection point according to claim 6, wherein the position mark generating module comprises:
    位置确定单元，用于根据各个所述预测距离，确定所述光束投射点在所述显示屏上的位置；a position determining unit, configured to determine a position of the beam projection point on the display screen according to each of the predicted distances;
    位置颜色获得单元，用于获得所述显示屏中的所述位置上的第一颜色的色相；a position color obtaining unit for obtaining a hue of the first color at the position in the display screen;
    色相差判断单元，用于判断将要在所述位置上生成的位置标记的默认颜色的色相与所述第一颜色的色相的差是否大于预设的阈值；a chromatic phase difference judging unit, configured to determine whether a difference between a hue of a default color of a position mark to be generated at the position and a hue of the first color is greater than a preset threshold;
    第一位置标记生成单元，用于当所述默认颜色的色相与所述第一颜色的色相的差大于所述阈值时，以所述默认颜色在所述位置上生成位置标记；或者，a first position mark generating unit, configured to generate a position mark at the position in the default color when a difference between a hue of the default color and a hue of the first color is greater than the threshold; or
    第二位置标记生成单元，用于当所述默认颜色的色相与所述第一颜色的色相的差不大于所述阈值时，以相异于所述默认颜色的预设的第二颜色在所述位置上生成位置标记。a second position mark generating unit, configured to: when the difference between the hue of the default color and the hue of the first color is not greater than the threshold, the second color is different from the preset second color A position marker is generated at the position.
  10. 如权利要求6至9中任一项所述的光束投射点的位置标记装置，其特征在于，所述激光束为红外激光束；所述光强检测器设置于所述显示屏的不同的边角上。 A position marking device for a beam projection point according to any one of claims 6 to 9, wherein said laser beam is an infrared laser beam; said light intensity detector is disposed on a different side of said display screen On the corner.
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