CN115223514A - Liquid crystal display driving system and method for intelligently adjusting parameters - Google Patents
Liquid crystal display driving system and method for intelligently adjusting parameters Download PDFInfo
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
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- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/14—Display of multiple viewports
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/37—Details of the operation on graphic patterns
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- G09G2320/00—Control of display operating conditions
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
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- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
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Abstract
The invention provides a liquid crystal display driving system and method for intelligently adjusting parameters, wherein the liquid crystal display driving method comprises the following steps: acquiring personnel data on the front side of the liquid crystal display screen; recognizing face data from the personnel data and determining face distribution data; determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data; dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data; and respectively setting display driving parameters for each sub-area to drive each sub-area to display. By the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency is improved by firstly determining the personnel data and then carrying out face recognition; according to the personnel's data that liquid crystal display openly watched, carry out subregion regulation and control, it is more intelligent and high-efficient to liquid crystal display.
Description
Technical Field
The invention relates to the technical field of display driving, in particular to a liquid crystal display driving system and method for intelligently adjusting parameters.
Background
With the development of display technology, liquid crystal display panels play an increasingly important role in life nowadays, and the liquid crystal display panels need complicated display driving systems for realizing display functions, and the configuration and adjustment of driving parameters are more complicated. At present, there are many schemes for automatically adjusting driving parameters of a liquid crystal display panel, and generally, a sensor is disposed outside the liquid crystal display panel to obtain information of external environmental conditions, and then, the liquid crystal display panel is adjusted according to the information of the external environmental conditions, so as to avoid the influence of the external environment on the liquid crystal display panel. For example, a temperature sensor and a luminance sensor are provided outside the liquid crystal display device, and the temperature and luminance information of the external environment is acquired by the sensors, thereby adjusting the driving parameters of the liquid crystal panel. However, the existing solution cannot adjust the driving parameters of the liquid crystal display panel in a partition manner according to the personnel distribution condition in front of the liquid crystal display panel.
Disclosure of Invention
The invention is based on the problems and provides a liquid crystal display driving system and a liquid crystal display driving method for intelligently adjusting parameters, wherein the pressure of a face recognition algorithm can be reduced and the efficiency can be improved by determining personnel data and then carrying out face recognition; according to the personnel's data that liquid crystal display openly watched, carry out subregion regulation and control, it is more intelligent and high-efficient to liquid crystal display.
In view of the above, an aspect of the present invention provides a liquid crystal display driving system for intelligently adjusting parameters, including: the system comprises an acquisition module, an identification processing module, a space calculation module and a control module; wherein,
the acquisition module is used for acquiring personnel data on the front side of the liquid crystal display screen;
the recognition processing module is used for recognizing face data from the personnel data and determining face distribution data;
the space calculation module is used for determining the spatial relationship data between each face and the liquid crystal display screen according to the face distribution data;
the control module is used for dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data;
the control module is further configured to set display driving parameters for each of the sub-regions respectively to drive each of the sub-regions to display.
Optionally, the acquisition module is configured to acquire the personnel data on the front side of the liquid crystal display screen, and includes:
acquiring image data within a preset angle range on the front surface of the liquid crystal display screen;
carrying out human body detection on the image data to obtain human body detection data;
determining the personnel data according to the human body detection data;
the personnel data at least comprise personnel images, personnel number and position relations among the personnel.
Optionally, the recognizing and processing module is configured to recognize face data from the person data and determine face distribution data, and includes:
acquiring the personnel image, and carrying out face recognition on the personnel image so as to recognize a first person with all or part of the face facing the liquid crystal display screen;
determining the position relations of N first persons according to the position relations of the persons to obtain the face distribution data;
wherein N is the number of the first people, and N is a positive integer.
Optionally, the space calculating module is configured to determine spatial relationship data between each face and the liquid crystal display screen according to the face distribution data, and includes:
establishing a three-dimensional rectangular coordinate system by taking the center of the liquid crystal display screen as a coordinate origin O, a horizontal line passing through the coordinate origin as an X axis, a vertical line passing through the coordinate origin as a Y axis and a straight line passing through the coordinate origin and simultaneously perpendicular to the X axis and the Y axis as a Z axis;
selecting any one of the N first persons as a basic person;
measuring the distance and the angle from the coordinate origin to the basic personnel;
calculating a basic coordinate value of the basic personnel in the three-dimensional rectangular coordinate system according to the distance and the angle;
determining coordinate values of other N-1 faces according to the basic coordinate values and the face distribution data;
and determining spatial relationship data between all the N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
Optionally, the control module is configured to divide a display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data, and includes:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating an included angle between the projection of each vector of the N vectors on the plane XOZ and/or the plane YOZ and the Z axis to obtain N first included angle values on the plane XOZ and/or N second included angle values on the plane YOZ;
calculating first distribution data and/or second distribution data of the N first included angle values and/or the N second included angle values;
and dividing the liquid crystal display screen into a plurality of sub-areas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
The invention provides a liquid crystal display driving method for intelligently adjusting parameters, which is applied to a liquid crystal display screen and comprises the following steps:
acquiring personnel data on the front side of the liquid crystal display screen;
recognizing face data from the personnel data and determining face distribution data;
determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data;
dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data;
and respectively setting display driving parameters for each sub-area to drive each sub-area to display.
Optionally, the step of acquiring the personal data on the front side of the liquid crystal display screen includes:
acquiring image data within a preset angle range on the front surface of the liquid crystal display screen;
carrying out human body detection on the image data to obtain human body detection data;
determining the personnel data according to the human body detection data;
the personnel data at least comprise personnel images, personnel number and position relations among all personnel.
Optionally, the step of recognizing the face data from the person data and determining the face distribution data includes:
acquiring the personnel image, and carrying out face recognition on the personnel image so as to recognize a first person with all or part of the face facing the liquid crystal display screen;
determining the position relations of N first persons according to the position relations of the persons to obtain the face distribution data;
wherein N is the number of the first people, and N is a positive integer.
Optionally, the step of determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data includes:
establishing a three-dimensional rectangular coordinate system by taking the center of the liquid crystal display screen as a coordinate origin O, a horizontal line passing through the coordinate origin as an X axis, a vertical line passing through the coordinate origin as a Y axis and a straight line passing through the coordinate origin and simultaneously perpendicular to the X axis and the Y axis as a Z axis;
selecting any one of the N first persons as a basic person;
measuring the distance and the angle from the coordinate origin to the basic personnel;
calculating a basic coordinate value of the basic personnel in the three-dimensional rectangular coordinate system according to the distance and the angle;
determining coordinate values of other N-1 faces according to the basic coordinate values and the face distribution data;
and determining spatial relationship data between all the N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
Optionally, the step of dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data includes:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating an included angle between the projection of each vector in the N vectors on the plane XOZ and/or the plane YOZ and the Z axis to obtain N first included angle values on the plane XOZ and/or N second included angle values on the plane YOZ;
calculating first distribution data and/or second distribution data of the N first included angle values and/or the N second included angle values;
and dividing the liquid crystal display screen into a plurality of sub-areas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
By adopting the technical scheme of the invention, the liquid crystal display driving system is provided with an acquisition module, an identification processing module, a space calculation module and a control module; the acquisition module is used for acquiring personnel data on the front side of the liquid crystal display screen; the identification processing module is used for identifying face data from the personnel data and determining face distribution data; the space calculation module is used for determining the spatial relationship data between each face and the liquid crystal display screen according to the face distribution data; the control module is used for dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data; the control module is further configured to set display driving parameters for each of the sub-regions respectively to drive each of the sub-regions to display. By the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency is improved by firstly determining the personnel data and then carrying out face recognition; according to the personnel's data that liquid crystal display openly watched, carry out subregion regulation and control, it is more intelligent and high-efficient to liquid crystal display.
Drawings
Fig. 1 is a schematic block diagram of a liquid crystal display driving system provided by an embodiment of the present invention;
fig. 2 is a flowchart of a liquid crystal display driving method according to another embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
A system and method for driving a liquid crystal display capable of intelligently adjusting parameters according to some embodiments of the present invention are described with reference to fig. 1 to 2.
As shown in fig. 1, an embodiment of the present invention provides a liquid crystal display driving system for intelligently adjusting parameters, including: the system comprises an acquisition module, an identification processing module, a space calculation module and a control module; wherein,
the acquisition module is used for acquiring personnel data on the front side of the liquid crystal display screen;
the identification processing module is used for identifying face data from the personnel data and determining face distribution data;
the space calculation module is used for determining the spatial relationship data between each face and the liquid crystal display screen according to the face distribution data;
the control module is used for dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data;
the control module is further configured to set display driving parameters for each of the sub-regions respectively to drive each of the sub-regions to display.
It can be understood that, because the viewing angle may be different and the display effect seen by the human eye may be different due to different positions of the people in front of the liquid crystal display, the display area of the liquid crystal display needs to be divided according to the distribution of the people, and each sub-area needs to be adjusted independently. In the embodiment of the invention, the image data (preferably three-dimensional image data with depth information) on the front surface of the liquid crystal display screen is collected, and the image data is identified and calculated to obtain the personnel data on the front surface of the liquid crystal display screen; then, by combining a face recognition algorithm and an image measurement technology, face data are recognized from the personnel data, and information such as the number, the position, the relative distance and the like of faces is obtained to determine face distribution data; then, determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data by means of a spatial coordinate system, a distance measurement technology and the like; and finally, dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data, and respectively setting display driving parameters for the sub-areas to drive the sub-areas to display.
It should be noted that, in some possible embodiments of the present invention, the recognizing the face data from the person data and determining the face distribution data may further include: identifying human eye data from the human face data, and determining audience human face data with a sight line concentrated on the liquid crystal display screen according to the human eye data; and determining the face distribution data according to the face data of the audience. By the scheme, the face which does not watch the liquid crystal display screen can be removed, so that the scheme is more accurate.
By adopting the technical scheme of the embodiment, the liquid crystal display driving system comprises an acquisition module, an identification processing module, a space calculation module and a control module; the acquisition module is used for acquiring personnel data on the front side of the liquid crystal display screen; the identification processing module is used for identifying face data from the personnel data and determining face distribution data; the space calculation module is used for determining the spatial relationship data between each face and the liquid crystal display screen according to the face distribution data; the control module is used for dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data; the control module is further configured to set display driving parameters for each of the sub-regions respectively to drive each of the sub-regions to display. By the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency is improved by firstly determining the personnel data and then carrying out face recognition; according to the personnel's data that liquid crystal display openly watched, carry out subregion regulation and control, it is more intelligent and high-efficient to liquid crystal display.
It should be understood that the block diagram of the liquid crystal display driving system shown in fig. 1 is only schematic, and the number of the modules is not limited to the protection scope of the present invention.
In some possible embodiments of the present invention, the acquiring module is configured to acquire the personal data on the front side of the liquid crystal display, and includes:
acquiring image data within a preset angle range on the front surface of the liquid crystal display screen;
carrying out human body detection on the image data to obtain human body detection data;
determining the personnel data according to the human body detection data;
the personnel data at least comprise personnel images, personnel number and position relations among the personnel.
In the embodiment of the present invention, image data (preferably, three-dimensional image data with depth information) within a preset angle range (for example, 150 degrees, 160 degrees, 120 degrees, and the like) on the front surface of the liquid crystal display screen is acquired, for example, a three-dimensional measurement camera may be used to acquire the image data or an infrared camera may be used to acquire the image data, then human body detection (for example, identification is performed through a preset human body identification model) is performed on the image data to obtain human body detection data, and further, the human body data at least including human body images, the number of people, and the position relationship among the people (which can be obtained through identification and calculation of the three-dimensional image data) is determined.
In some possible embodiments of the present invention, the recognizing and processing module is configured to recognize face data from the person data and determine face distribution data, and includes:
acquiring the personnel image, and carrying out face recognition on the personnel image so as to recognize a first person with all or part of the face facing the liquid crystal display screen;
determining the position relations of N first persons according to the position relations of the persons to obtain the face distribution data;
wherein N is the number of the first people, and N is a positive integer.
It will be appreciated that the person facing away from the liquid crystal display does not view the displayed content, whose person data is in this case noisy data, and needs to be removed to improve accuracy. In this embodiment, the person image is obtained, and face recognition is performed on the person image, so as to recognize a first person whose face is facing the liquid crystal display screen, in whole or in part (for example, more than 30%); and determining the position relations of the N first persons according to the position relations of the persons to obtain the face distribution data.
In some possible embodiments of the present invention, the spatial calculation module is configured to determine spatial relationship data between each face and the liquid crystal display according to the face distribution data, and includes:
establishing a three-dimensional rectangular coordinate system by taking the center of the liquid crystal display screen as a coordinate origin O, a horizontal line passing through the coordinate origin as an X axis, a vertical line passing through the coordinate origin as a Y axis and a straight line passing through the coordinate origin and simultaneously perpendicular to the X axis and the Y axis as a Z axis;
selecting any one of the N first persons as a base person;
measuring the distance and the angle from the coordinate origin to the basic personnel;
calculating a basic coordinate value of the basic personnel in the three-dimensional rectangular coordinate system according to the distance and the angle;
determining coordinate values of other N-1 faces according to the basic coordinate values and the face distribution data;
and determining spatial relationship data between all the N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
It can be understood that, in order to determine the position relationship between the audience and the display screen more efficiently and accurately, in this embodiment, the distances between the N faces and the origin, the included angles between the N faces and each plane, and the coordinate values of the N faces are calculated by establishing a three-dimensional coordinate system and using a distance measurement algorithm, so as to obtain spatial relationship data between all the N faces and the liquid crystal display screen.
In some possible embodiments of the present invention, the control module is configured to divide a display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data, and includes:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating an included angle between the projection of each vector in the N vectors on the plane XOZ and/or the plane YOZ and the Z axis to obtain N first included angle values on the plane XOZ and/or N second included angle values on the plane YOZ;
calculating first distribution data and/or second distribution data of the N first included angle values and/or the N second included angle values;
and dividing the liquid crystal display screen into a plurality of sub-areas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
It can be understood that, in order to adjust the driving parameters of the liquid crystal display screen more accurately and efficiently according to the personnel data, in this embodiment, the spatial relationship data between the audience and the liquid crystal display screen is determined by the three-dimensional coordinate system, then N vectors from the origin O to the N faces are determined according to the spatial relationship data, then the size of the included angle between the vector projection and the Z axis is obtained, and finally, by using a mathematical statistical method, the size distribution of the preset included angle and the sub-area division planning are performed (for example, the size of the included angle in the plane XOZ is distributed in two areas of 30 degrees to 60 degrees and 0 degree to 30 degrees, the liquid crystal display screen is divided into four equal parts in the vertical direction, and/or the horizontal direction of the liquid crystal display screen is divided into a plurality of sub-areas according to the size distribution data of the included angle. Preferably, the sub-region division can be performed more accurately by combining the length of the line segment corresponding to the vector projection, the vector size and other data.
Referring to fig. 2, another embodiment of the present invention provides a liquid crystal display driving method for intelligently adjusting parameters, which is applied to a liquid crystal display panel, and the liquid crystal display driving method includes:
acquiring personnel data on the front side of the liquid crystal display screen;
identifying face data from the personnel data and determining face distribution data;
determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data;
dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data;
and respectively setting display driving parameters for each sub-area to drive each sub-area to display.
It can be understood that, because the viewing angle may be different and the display effect seen by the human eye may be different due to different positions of the people in front of the liquid crystal display, the display area of the liquid crystal display needs to be divided according to the distribution of the people, and each sub-area needs to be adjusted independently. In the embodiment of the invention, the image data (preferably three-dimensional image data with depth information) on the front surface of the liquid crystal display screen is acquired, and the image data is identified and calculated to obtain the personnel data on the front surface of the liquid crystal display screen; then, by combining a face recognition algorithm and an image measurement technology, recognizing face data from the personnel data, and acquiring information such as the number, the position, the relative distance and the like of faces to determine face distribution data; then, determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data by means of a spatial coordinate system, a distance measurement technology and the like; and finally, dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data, and respectively setting display driving parameters for each sub-area to drive each sub-area to display.
It should be noted that, in some possible embodiments of the present invention, the recognizing the face data from the person data and determining the face distribution data may further include: identifying human eye data from the human face data, and determining audience human face data with a sight line concentrated on the liquid crystal display screen according to the human eye data; and determining the face distribution data according to the face data of the audiences. By the scheme, the face which does not watch the liquid crystal display screen can be removed, so that the scheme is more accurate.
With the technical solution of this embodiment, the liquid crystal display driving method includes: acquiring personnel data on the front side of the liquid crystal display screen; identifying face data from the personnel data and determining face distribution data; determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data; dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data; and respectively setting display driving parameters for each sub-area to drive each sub-area to display. By the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency is improved by firstly determining the personnel data and then carrying out face recognition; according to the personnel's data that liquid crystal display openly watched, carry out subregion regulation and control, it is more intelligent and high-efficient to liquid crystal display.
In some possible embodiments of the present invention, the step of acquiring the person data on the front side of the liquid crystal display screen includes:
acquiring image data within a preset angle range on the front surface of the liquid crystal display screen;
carrying out human body detection on the image data to obtain human body detection data;
determining the personnel data according to the human body detection data;
the personnel data at least comprise personnel images, personnel number and position relations among the personnel.
It can be understood that there are various ways to obtain the person data on the front surface of the liquid crystal display, in an embodiment of the present invention, image data (preferably, three-dimensional image data with depth information) within a range of a preset angle (for example, 150 degrees, 160 degrees, 120 degrees, and the like) on the front surface of the liquid crystal display is collected, for example, a three-dimensional measurement camera may be used to collect the image data or an infrared camera may be used to collect the image data, then human body detection (for example, identification is performed through a preset human body identification model) is performed on the image data to obtain human body detection data, and further, person data at least including a person image, a number of persons, a position relationship (which can be obtained through identification and calculation of three-dimensional image data) between the persons is determined.
In some possible embodiments of the present invention, the step of identifying face data from the person data and determining face distribution data includes:
acquiring the personnel image, and carrying out face recognition on the personnel image so as to recognize a first person with all or part of the face facing the liquid crystal display screen;
determining the position relations of N first persons according to the position relations of the persons to obtain the face distribution data;
wherein N is the number of the first people, and N is a positive integer.
It will be appreciated that the person facing away from the liquid crystal display does not view the displayed content, whose person data is in this case noisy data, and needs to be removed to improve accuracy. In this embodiment, the person image is obtained, and the person image is subjected to face recognition to recognize a first person whose face faces all or part (for example, more than 30%) of the first person facing the liquid crystal display screen; and determining the position relations of the N first persons according to the position relations of the persons to obtain the face distribution data.
In some possible embodiments of the present invention, the step of determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data includes:
establishing a three-dimensional rectangular coordinate system by taking the center of the liquid crystal display screen as a coordinate origin O, a horizontal line passing through the coordinate origin as an X axis, a vertical line passing through the coordinate origin as a Y axis and a straight line passing through the coordinate origin and being perpendicular to the X axis and the Y axis at the same time as a Z axis;
selecting any one of the N first persons as a basic person;
measuring the distance and the angle from the coordinate origin to the basic personnel;
calculating a basic coordinate value of the basic personnel in the three-dimensional rectangular coordinate system according to the distance and the angle;
determining coordinate values of other N-1 faces according to the basic coordinate values and the face distribution data;
and determining spatial relationship data between all the N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
It can be understood that, in order to determine the position relationship between the audience and the display screen more efficiently and accurately, in this embodiment, the distances between the N faces and the origin, the included angles between the N faces and each plane, the coordinate values of the N faces, and the like are calculated by establishing a three-dimensional coordinate system and using a distance measurement algorithm, and the like, so as to obtain spatial relationship data between all the N faces and the liquid crystal display screen.
In some possible embodiments of the present invention, the dividing the display area of the lcd into a plurality of sub-areas according to the spatial relationship data includes:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating an included angle between the projection of each vector of the N vectors on the plane XOZ and/or the plane YOZ and the Z axis to obtain N first included angle values on the plane XOZ and/or N second included angle values on the plane YOZ;
calculating first distribution data and/or second distribution data of the N first included angle values and/or the N second included angle values;
and dividing the liquid crystal display screen into a plurality of sub-areas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
It can be understood that, in order to adjust the driving parameters of the liquid crystal display screen more accurately and efficiently according to the personal data, in this embodiment, the spatial relationship data between the audience and the liquid crystal display screen is determined by using a three-dimensional coordinate system, then N vectors from the origin O to the N faces are determined according to the spatial relationship data, then the size of the included angle between the vector projection and the Z axis is calculated, and finally, by using a mathematical statistical method, the size distribution of the preset included angle and the subdivision planning are performed (for example, the size of the included angle in the plane XOZ is distributed in two areas of 30 degrees to 60 degrees and 0 degree to 30 degrees, the liquid crystal display screen is divided into four equal parts in the vertical direction), and the liquid crystal display screen is divided into a plurality of subregions in the vertical direction and/or the horizontal direction according to the size distribution data of the included angle. Preferably, the sub-region division can be performed more accurately by combining the length of the line segment corresponding to the vector projection, the vector size and other data.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solutions of the present application, which are essential or part of the technical solutions contributing to the prior art, or all or part of the technical solutions, may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the above methods of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps of the methods of the above embodiments may be implemented by a program, which is stored in a computer-readable memory, the memory including: flash Memory disks, read-Only memories (ROMs), random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions without departing from the spirit and scope of the invention, and all changes and modifications can be made, including different combinations of functions, implementation steps, software and hardware implementations, all of which are included in the scope of the invention.
Claims (10)
1. A liquid crystal display driving system for intelligently adjusting parameters is characterized by comprising: the system comprises an acquisition module, an identification processing module, a space calculation module and a control module; wherein,
the acquisition module is used for acquiring personnel data on the front side of the liquid crystal display screen;
the recognition processing module is used for recognizing face data from the personnel data and determining face distribution data;
the space calculation module is used for determining the spatial relationship data between each face and the liquid crystal display screen according to the face distribution data;
the control module is used for dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data;
the control module is further configured to set display driving parameters for each of the sub-regions respectively to drive each of the sub-regions to display.
2. The liquid crystal display driving system according to claim 1, wherein the collecting module is configured to obtain the personal data on the front side of the liquid crystal display screen, and comprises:
acquiring image data within a preset angle range on the front surface of the liquid crystal display screen;
carrying out human body detection on the image data to obtain human body detection data;
determining the personnel data according to the human body detection data;
the personnel data at least comprise personnel images, personnel number and position relations among the personnel.
3. The liquid crystal display driving system according to claim 2, wherein the recognition processing module is configured to recognize face data from the person data and determine face distribution data, and comprises:
acquiring the personnel image, and carrying out face recognition on the personnel image so as to recognize a first person with all or part of the face facing the liquid crystal display screen;
determining the position relations of N first persons according to the position relations of the persons to obtain the face distribution data;
wherein N is the number of the first persons, and N is a positive integer.
4. The lcd driving system of claim 3, wherein the spatial calculation module is configured to determine spatial relationship data between each face and the lcd according to the face distribution data, and comprises:
establishing a three-dimensional rectangular coordinate system by taking the center of the liquid crystal display screen as a coordinate origin O, a horizontal line passing through the coordinate origin as an X axis, a vertical line passing through the coordinate origin as a Y axis and a straight line passing through the coordinate origin and simultaneously perpendicular to the X axis and the Y axis as a Z axis;
selecting any one of the N first persons as a basic person;
measuring the distance and the angle from the coordinate origin to the basic personnel;
calculating a basic coordinate value of the basic personnel in the three-dimensional rectangular coordinate system according to the distance and the angle;
determining coordinate values of other N-1 faces according to the basic coordinate values and the face distribution data;
and determining spatial relationship data between all the N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
5. The liquid crystal display driving system of claim 4, wherein the control module is configured to divide a display area of the liquid crystal display into a plurality of sub-areas according to the spatial relationship data, and comprises:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating an included angle between the projection of each vector of the N vectors on the plane XOZ and/or the plane YOZ and the Z axis to obtain N first included angle values on the plane XOZ and/or N second included angle values on the plane YOZ;
calculating first distribution data and/or second distribution data of the N first included angle values and/or the N second included angle values;
and dividing the liquid crystal display screen into a plurality of sub-areas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
6. A liquid crystal display driving method for intelligently adjusting parameters is applied to a liquid crystal display screen, and comprises the following steps:
acquiring personnel data on the front side of the liquid crystal display screen;
recognizing face data from the personnel data and determining face distribution data;
determining spatial relationship data between each face and the liquid crystal display screen according to the face distribution data;
dividing the display area of the liquid crystal display screen into a plurality of sub-areas according to the spatial relationship data;
and respectively setting display driving parameters for each sub-area to drive each sub-area to display.
7. The liquid crystal display driving method according to claim 6, wherein the step of acquiring the person data on the front surface of the liquid crystal display panel includes:
acquiring image data within a preset angle range on the front surface of the liquid crystal display screen;
carrying out human body detection on the image data to obtain human body detection data;
determining the personnel data according to the human body detection data;
the personnel data at least comprise personnel images, personnel number and position relations among the personnel.
8. The liquid crystal display driving method according to claim 7, wherein the step of recognizing the face data from the person data and determining the face distribution data comprises:
acquiring the personnel image, and carrying out face recognition on the personnel image so as to recognize a first person with all or part of faces facing the liquid crystal display screen;
determining the position relations of N first persons according to the position relations of the persons to obtain the face distribution data;
wherein N is the number of the first persons, and N is a positive integer.
9. The liquid crystal display driving method according to claim 8, wherein the step of determining spatial relationship data between each face and the liquid crystal display screen based on the face distribution data includes:
establishing a three-dimensional rectangular coordinate system by taking the center of the liquid crystal display screen as a coordinate origin O, a horizontal line passing through the coordinate origin as an X axis, a vertical line passing through the coordinate origin as a Y axis and a straight line passing through the coordinate origin and simultaneously perpendicular to the X axis and the Y axis as a Z axis;
selecting any one of the N first persons as a basic person;
measuring the distance and the angle from the coordinate origin to the basic personnel;
calculating a basic coordinate value of the basic personnel in the three-dimensional rectangular coordinate system according to the distance and the angle;
determining coordinate values of other N-1 faces according to the basic coordinate values and the face distribution data;
and determining spatial relationship data between all the N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
10. The liquid crystal display driving method according to claim 9, wherein the step of dividing the display area of the liquid crystal display panel into a plurality of sub-areas according to the spatial relationship data includes:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating an included angle between the projection of each vector in the N vectors on the plane XOZ and/or the plane YOZ and the Z axis to obtain N first included angle values on the plane XOZ and/or N second included angle values on the plane YOZ;
calculating first distribution data and/or second distribution data of the N first included angle values and/or the N second included angle values;
and dividing the liquid crystal display screen into a plurality of sub-areas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
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