CN115223514B - Liquid crystal display driving system and method capable of intelligently adjusting parameters - Google Patents
Liquid crystal display driving system and method capable of 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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- 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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- G09G5/14—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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- 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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- G09G2360/00—Aspects of the architecture of display systems
- 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 a method for intelligently adjusting parameters, wherein the liquid crystal display driving method comprises the following steps: acquiring personnel data on the front surface 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 according to the face distribution data; dividing a display area of the liquid crystal display into a plurality of subareas according to the spatial relationship data; and setting display driving parameters for each subarea respectively to drive each subarea to display. According to the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency can be improved by determining the personnel data and then carrying out face recognition; according to personnel data watched on the front side of the liquid crystal display, the liquid crystal display is subjected to regional regulation and control, so that the liquid crystal display is more intelligent and efficient.
Description
Technical Field
The invention relates to the technical field of display driving, in particular to a liquid crystal display driving system and method capable of intelligently adjusting parameters.
Background
With the development of display technology, the lcd panel plays an increasingly important role in the present life, and the lcd panel needs a complex display driving system to realize its display function, so that the configuration and adjustment of driving parameters are more complex. Currently, there are many schemes for automatically adjusting driving parameters of a liquid crystal display panel, in which a sensor is disposed outside the liquid crystal display panel to obtain information of external environmental conditions, and then the internal driving parameters of the liquid crystal display panel are 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 brightness sensor are arranged outside the liquid crystal display device, and temperature and brightness information of an external environment are acquired through the sensors, so that driving parameters of the liquid crystal panel are adjusted. However, the existing scheme cannot adjust the driving parameters of the liquid crystal display panel in a partitioning manner according to the personnel distribution situation in front of the liquid crystal display panel.
Disclosure of Invention
Based on the problems, the invention provides a liquid crystal display driving system and a liquid crystal display driving method for intelligently adjusting parameters, and the pressure of a face recognition algorithm can be reduced and the efficiency can be improved by firstly determining personnel data and then carrying out face recognition; according to personnel data watched on the front side of the liquid crystal display, the liquid crystal display is subjected to regional regulation and control, so that the liquid crystal display is more intelligent and efficient.
In view of this, an aspect of the present invention proposes a liquid crystal display driving system for intelligently adjusting parameters, including: the device 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 surface 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 space relation 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 into a plurality of subareas according to the spatial relationship data;
the control module is further used for setting display driving parameters for the subareas respectively to drive the subareas to display.
Optionally, the collecting module is configured to obtain personnel data on the front surface of the liquid crystal display screen, and includes:
acquiring image data in a preset angle range of the front surface of the liquid crystal display screen;
performing 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 quantity and the position relation among all the personnel.
Optionally, the identification processing module is configured to identify 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 to identify a first person with all or part of the faces facing the liquid crystal display screen;
determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data;
wherein N is the number of the first personnel, and N is a positive integer.
Optionally, 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:
a three-dimensional rectangular coordinate system is established by taking the center of the liquid crystal display screen as a coordinate origin O, taking a horizontal line passing through the coordinate origin as an X axis, taking a vertical line passing through the coordinate origin as a Y axis, and taking a straight line passing through the coordinate origin and being vertical to the X axis and the Y axis at the same time as a Z axis;
selecting any one from the N first personnel as a basic personnel;
measuring the distance and angle from the origin of coordinates to the basic person;
calculating a basic coordinate value of the basic person 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 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 the 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 subareas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
Another aspect of the present invention provides a liquid crystal display driving method for intelligently adjusting parameters, which is applied to a liquid crystal display, and the liquid crystal display driving method includes:
acquiring personnel data on the front surface 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 according to the face distribution data;
dividing a display area of the liquid crystal display into a plurality of subareas according to the spatial relationship data;
and setting display driving parameters for each subarea respectively to drive each subarea to display.
Optionally, the step of acquiring personnel data on the front surface of the liquid crystal display screen includes:
acquiring image data in a preset angle range of the front surface of the liquid crystal display screen;
performing 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 quantity and the position relation among all the personnel.
Optionally, 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 to identify a first person with all or part of the faces facing the liquid crystal display screen;
determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data;
wherein N is the number of the first personnel, and N is a positive integer.
Optionally, the step of determining spatial relationship data between each face and the liquid crystal display according to the face distribution data includes:
a three-dimensional rectangular coordinate system is established by taking the center of the liquid crystal display screen as a coordinate origin O, taking a horizontal line passing through the coordinate origin as an X axis, taking a vertical line passing through the coordinate origin as a Y axis, and taking a straight line passing through the coordinate origin and being vertical to the X axis and the Y axis at the same time as a Z axis;
selecting any one from the N first personnel as a basic personnel;
measuring the distance and angle from the origin of coordinates to the basic person;
calculating a basic coordinate value of the basic person 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 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 the 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 subareas 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 face 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 space relation 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 into a plurality of subareas according to the spatial relationship data; the control module is further used for setting display driving parameters for the subareas respectively to drive the subareas to display. According to the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency can be improved by determining the personnel data and then carrying out face recognition; according to personnel data watched on the front side of the liquid crystal display, the liquid crystal display is subjected to regional regulation and control, so that the liquid crystal display is more intelligent and efficient.
Drawings
FIG. 1 is a schematic block diagram of a liquid crystal display driving system according to an embodiment of the present invention;
fig. 2 is a flow chart of a driving method of a liquid crystal display according to another embodiment of the invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
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 described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may 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 may be included in at least one embodiment of the present application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
A system and a method for driving a liquid crystal display with intelligently adjusted parameters according to some embodiments of the present invention are described below 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 device 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 surface 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 space relation 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 into a plurality of subareas according to the spatial relationship data;
the control module is further used for setting display driving parameters for the subareas respectively to drive the subareas to display.
It will be appreciated that, because the positions of the personnel in front of the lcd screen are different, the viewing angles are different, and the display effects seen by the eyes may be different, the display areas of the lcd screen need to be divided according to the distribution of the personnel, and each sub-area is individually adjusted. In the embodiment of the invention, the image data is identified and calculated by collecting the image data (preferably three-dimensional image data with depth information) on the front surface of the liquid crystal display screen, so as to obtain personnel data on the front surface of the liquid crystal display screen; 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 the faces to determine face distribution data; then, determining the 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 into a plurality of subareas according to the spatial relationship data, and respectively setting display driving parameters for each subarea to drive each subarea to display.
It should be noted that, in some possible embodiments of the present invention, the identifying face data from the person data and determining face distribution data may further include: identifying human eye data from the human face data, and determining the human face data of the audience with the sight 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 of the person not watching 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 face 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 space relation 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 into a plurality of subareas according to the spatial relationship data; the control module is further used for setting display driving parameters for the subareas respectively to drive the subareas to display. According to the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency can be improved by determining the personnel data and then carrying out face recognition; according to personnel data watched on the front side of the liquid crystal display, the liquid crystal display is subjected to regional regulation and control, so that the liquid crystal display is more intelligent and efficient.
It should be noted that the block diagram of the lcd driving system shown in fig. 1 is only schematic, and the number of the modules shown 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 personnel data on a front surface of the liquid crystal display, and includes:
acquiring image data in a preset angle range of the front surface of the liquid crystal display screen;
performing 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 quantity and the position relation among all the personnel.
It may be understood that there are various ways of acquiring the personnel data on the front surface of the liquid crystal display, in this embodiment of the present invention, by acquiring image data (preferably three-dimensional image data with depth information) within a preset angle (for example, 150 degrees, 160 degrees, 120 degrees, etc.) on the front surface of the liquid crystal display, for example, the three-dimensional measurement camera may be used to acquire the image data or the infrared camera may be used to acquire the image data, then the human body detection is performed on the image data (for example, the identification is performed through a preset human body identification model) to obtain the human body detection data, and further the personnel data including at least the personnel image, the number of personnel, the positional relationship among the personnel (which may be obtained through the identification and calculation of the three-dimensional image data) and the like are determined.
In some possible embodiments of the present invention, the identification processing module is configured to identify 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 to identify a first person with all or part of the faces facing the liquid crystal display screen;
determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data;
wherein N is the number of the first personnel, and N is a positive integer.
It will be appreciated that persons facing away from the lcd are not viewing the displayed content, and their person data is noise data in this embodiment, and need to be removed to improve accuracy. In this embodiment, the person image is obtained to perform face recognition on the person image, so as to identify a first person with all or part (for example, more than 30%) of the face facing the liquid crystal display screen; and determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data.
In some possible embodiments of the present invention, the spatial calculating module is configured to determine spatial relationship data between each face and the liquid crystal display according to the face distribution data, and includes:
a three-dimensional rectangular coordinate system is established by taking the center of the liquid crystal display screen as a coordinate origin O, taking a horizontal line passing through the coordinate origin as an X axis, taking a vertical line passing through the coordinate origin as a Y axis, and taking a straight line passing through the coordinate origin and being vertical to the X axis and the Y axis at the same time as a Z axis;
selecting any one from the N first personnel as a basic personnel;
measuring the distance and angle from the origin of coordinates to the basic person;
calculating a basic coordinate value of the basic person 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 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 positional relationship between the viewer 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 adopting a distance measurement algorithm, etc., so as to obtain spatial relationship data between all 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 the 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 subareas 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 more accurately and efficiently adjust the driving parameters of the liquid crystal display according to the personnel data, in this embodiment, the spatial relationship data between the audience and the liquid crystal display is determined by means of 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 angle between the vector projection and the Z axis is calculated, finally, a preset angle size distribution and subarea division planning (for example, the angle size distribution of the plane XOZ is in two areas of 30-60 degrees and 0-30 degrees, the liquid crystal display is quartered in the vertical direction) are utilized by using a mathematical statistics method, and the liquid crystal display is divided into a plurality of subareas in the vertical direction and/or the horizontal direction according to the distribution data of the angle size. Preferably, more accurate sub-region division can be performed by combining data such as the length of a line segment, the vector size and the like corresponding to the vector projection.
Referring to fig. 2, another embodiment of the present invention provides a method for driving a liquid crystal display with intelligently adjusted parameters, which is applied to a liquid crystal display, and the method for driving the liquid crystal display includes:
acquiring personnel data on the front surface 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 according to the face distribution data;
dividing a display area of the liquid crystal display into a plurality of subareas according to the spatial relationship data;
and setting display driving parameters for each subarea respectively to drive each subarea to display.
It will be appreciated that, because the positions of the personnel in front of the lcd screen are different, the viewing angles are different, and the display effects seen by the eyes may be different, the display areas of the lcd screen need to be divided according to the distribution of the personnel, and each sub-area is individually adjusted. In the embodiment of the invention, the image data is identified and calculated by collecting the image data (preferably three-dimensional image data with depth information) on the front surface of the liquid crystal display screen, so as to obtain personnel data on the front surface of the liquid crystal display screen; 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 the faces to determine face distribution data; then, determining the 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 into a plurality of subareas according to the spatial relationship data, and respectively setting display driving parameters for each subarea to drive each subarea to display.
It should be noted that, in some possible embodiments of the present invention, the identifying face data from the person data and determining face distribution data may further include: identifying human eye data from the human face data, and determining the human face data of the audience with the sight 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 of the person not watching 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 surface 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 according to the face distribution data; dividing a display area of the liquid crystal display into a plurality of subareas according to the spatial relationship data; and setting display driving parameters for each subarea respectively to drive each subarea to display. According to the scheme of the invention, the pressure of a face recognition algorithm can be reduced and the efficiency can be improved by determining the personnel data and then carrying out face recognition; according to personnel data watched on the front side of the liquid crystal display, the liquid crystal display is subjected to regional regulation and control, so that the liquid crystal display is more intelligent and efficient.
In some possible embodiments of the present invention, the step of obtaining personnel data on the front surface of the liquid crystal display screen includes:
acquiring image data in a preset angle range of the front surface of the liquid crystal display screen;
performing 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 quantity and the position relation among all the personnel.
It may be understood that there are various ways of acquiring the personnel data on the front surface of the liquid crystal display, in this embodiment of the present invention, by acquiring image data (preferably three-dimensional image data with depth information) within a preset angle (for example, 150 degrees, 160 degrees, 120 degrees, etc.) on the front surface of the liquid crystal display, for example, the three-dimensional measurement camera may be used to acquire the image data or the infrared camera may be used to acquire the image data, then the human body detection is performed on the image data (for example, the identification is performed through a preset human body identification model) to obtain the human body detection data, and further the personnel data including at least the personnel image, the number of personnel, the positional relationship among the personnel (which may be obtained through the identification and calculation of the three-dimensional image data) and the like are 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 to identify a first person with all or part of the faces facing the liquid crystal display screen;
determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data;
wherein N is the number of the first personnel, and N is a positive integer.
It will be appreciated that persons facing away from the lcd are not viewing the displayed content, and their person data is noise data in this embodiment, and need to be removed to improve accuracy. In this embodiment, the person image is obtained to perform face recognition on the person image, so as to identify a first person with all or part (for example, more than 30%) of the face facing the liquid crystal display screen; and determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data.
In some possible embodiments of the present invention, the step of determining spatial relationship data between each face and the lcd according to the face distribution data includes:
a three-dimensional rectangular coordinate system is established by taking the center of the liquid crystal display screen as a coordinate origin O, taking a horizontal line passing through the coordinate origin as an X axis, taking a vertical line passing through the coordinate origin as a Y axis, and taking a straight line passing through the coordinate origin and being vertical to the X axis and the Y axis at the same time as a Z axis;
selecting any one from the N first personnel as a basic personnel;
measuring the distance and angle from the origin of coordinates to the basic person;
calculating a basic coordinate value of the basic person 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 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 positional relationship between the viewer 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 adopting a distance measurement algorithm, etc., so as to obtain spatial relationship data between all N faces and the liquid crystal display screen.
In some possible embodiments of the present invention, the step of dividing the display area of the liquid crystal display 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 the 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 subareas 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 more accurately and efficiently adjust the driving parameters of the liquid crystal display according to the personnel data, in this embodiment, the spatial relationship data between the audience and the liquid crystal display is determined by means of 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 angle between the vector projection and the Z axis is calculated, finally, a preset angle size distribution and subarea division planning (for example, the angle size distribution of the plane XOZ is in two areas of 30-60 degrees and 0-30 degrees, the liquid crystal display is quartered in the vertical direction) are utilized by using a mathematical statistics method, and the liquid crystal display is divided into a plurality of subareas in the vertical direction and/or the horizontal direction according to the distribution data of the angle size. Preferably, more accurate sub-region division can be performed by combining data such as the length of a line segment, the vector size and the like corresponding to the vector projection.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a memory, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be implemented by a program that instructs associated hardware, and the program may be stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Although the present invention is disclosed above, the present invention is not limited thereto. Variations and modifications, including combinations of the different functions and implementation steps, as well as embodiments of the software and hardware, may be readily apparent to those skilled in the art without departing from the spirit and scope of the invention.
Claims (6)
1. An intelligent parameter-adjusting liquid crystal display driving system, comprising: the device 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 surface 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 space relation 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 into a plurality of subareas according to the spatial relationship data;
the control module is further used for setting display driving parameters for each sub-region respectively so as to drive each sub-region to display;
the acquisition module is used for acquiring personnel data on the front face of the liquid crystal display screen, and comprises:
acquiring image data in a preset angle range of the front surface of the liquid crystal display screen;
performing 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 quantity and the position relation among all the personnel;
the identification processing module is configured to identify face data from the person data, and determine face distribution data, and includes:
acquiring the personnel image, carrying out face recognition on the personnel image, identifying human eye data from the human eye data, and determining the human face data of a spectator with the sight concentrated on the liquid crystal display screen according to the human eye data so as to identify a first personnel with all or part of all the human faces facing the liquid crystal display screen;
determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data;
wherein N is the number of the first personnel, and N is a positive integer.
2. The lcd driving system according to claim 1, wherein the spatial calculating module for determining spatial relationship data between each face and the lcd according to the face distribution data comprises:
a three-dimensional rectangular coordinate system is established by taking the center of the liquid crystal display screen as a coordinate origin O, taking a horizontal line passing through the coordinate origin as an X axis, taking a vertical line passing through the coordinate origin as a Y axis, and taking a straight line passing through the coordinate origin and being vertical to the X axis and the Y axis at the same time as a Z axis;
selecting any one from the N first personnel as a basic personnel;
measuring the distance and angle from the origin of coordinates to the basic person;
calculating a basic coordinate value of the basic person 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 N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
3. The liquid crystal display driving system according to claim 2, wherein the control module for dividing the display area of the liquid crystal display into a plurality of sub-areas according to the spatial relationship data comprises:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating the 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 subareas in the vertical direction and/or the horizontal direction according to the first distribution data and/or the second distribution data.
4. The liquid crystal display driving method capable of intelligently adjusting parameters is characterized by being applied to a liquid crystal display screen, and comprises the following steps:
acquiring personnel data on the front surface 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 according to the face distribution data;
dividing a display area of the liquid crystal display into a plurality of subareas according to the spatial relationship data;
setting display driving parameters for each subarea respectively to drive each subarea to display;
the step of acquiring personnel data on the front surface of the liquid crystal display screen comprises the following steps:
acquiring image data in a preset angle range of the front surface of the liquid crystal display screen;
performing 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 quantity and the position relation among all the personnel;
the step of identifying face data from the personnel data and determining face distribution data comprises the following steps:
acquiring the personnel image, carrying out face recognition on the personnel image, identifying human eye data from the human eye data, and determining the human face data of a spectator with the sight concentrated on the liquid crystal display screen according to the human eye data so as to identify a first personnel with all or part of all the human faces facing the liquid crystal display screen;
determining the position relation of N first persons according to the position relation of the persons, and obtaining the face distribution data;
wherein N is the number of the first personnel, and N is a positive integer.
5. The method according to claim 4, wherein the step of determining spatial relationship data between each face and the liquid crystal display according to the face distribution data comprises:
a three-dimensional rectangular coordinate system is established by taking the center of the liquid crystal display screen as a coordinate origin O, taking a horizontal line passing through the coordinate origin as an X axis, taking a vertical line passing through the coordinate origin as a Y axis, and taking a straight line passing through the coordinate origin and being vertical to the X axis and the Y axis at the same time as a Z axis;
selecting any one from the N first personnel as a basic personnel;
measuring the distance and angle from the origin of coordinates to the basic person;
calculating a basic coordinate value of the basic person 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 N faces and the liquid crystal display screen according to the basic coordinate values and the coordinate values of the other N-1 faces.
6. The method according to claim 5, wherein the step of dividing the display area of the liquid crystal display into a plurality of sub-areas according to the spatial relationship data comprises:
determining N vectors from an origin O to the N faces respectively according to the spatial relationship data;
calculating the 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 subareas 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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