Control method for projector adjustment

Abstract

The invention relates to the technical field of projectors, and discloses a control method for projector adjustment, and the method comprises the steps: starting a projector; acquiring initial projection data and audience data; forming initial adjustment judgment data through an initial adjustment judgment strategy; forming initial adjustment data through an initial adjustment strategy; performing projector picture playing at the target initial projection angle; obtaining midway character data; forming midway adjustment judgment data through a midway adjustment judgment strategy; and forming midway adjustment data through a midway adjustment strategy. According to the control method for projector adjustment, the projection angle of the projector can be adjusted before the projection picture is played, so that light rays of the projector cannot be projected to audiences in an audience area, and the possibility that the light rays of the projector damage the eyesight of the audiences is reduced; the projector picture can be adjusted in the projector picture playing process, and harm of projector light to human eyes is reduced.

Description

Technical Field

[0001] This invention relates to the field of projector technology, specifically to a control method for adjusting a projector. Background Technology

[0002] A projector, also known as a projector, is a device that can magnify and project images or videos onto a display surface. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. Projectors are increasingly widely used in daily life and work, and are widely used in classrooms, cinemas, conference rooms, exhibition halls, homes and other places. Currently, the light emitted by projectors can easily damage users' eyesight. When users enter the projection area, their eyes will be hurt by the light emitted by the projector, and even if the users leave the projection area later, their vision will be difficult to recover in a short period of time. In existing technologies, in some workplaces where multiple people are watching a projector, it is generally inconvenient to pre-adjust the projector according to the specific situation of the viewers before they arrive at the audience area. As a result, when the projector is in use, the projector light may be projected onto the viewers, which may cause eye damage. In addition, during the use of the projector, staff members may come to the projected screen to give presentations. These staff members may be sitting next to the projected screen for a long time, and it is inconvenient to adjust the projector according to their specific positions. This results in the projector light shining into the staff members' eyes for a long time, causing eye damage. Summary of the Invention

[0003] The present invention provides a control method for adjusting a projector to solve the problems mentioned in the background art.

[0004] This invention provides the following technical solution: a control method for adjusting a projector, comprising: Turn on the projector; Acquire initial projection data and audience data; The initial projection data includes the projection surface, the projector position, and the light path of the projector light source. The audience data includes audience area and audience height; Based on the projection data and audience data, initial adjustment judgment data is generated through an initial adjustment judgment strategy; If it is determined that the projector needs initial adjustment, then based on the initial adjustment determination data, initial adjustment data is generated through the initial adjustment strategy to adjust the projection angle of the projector. The initial adjustment data includes the initial projection angle of the target; The projector displays the image based on the initial projection angle of the target. Acquire data on characters during the journey; The data on characters along the way includes the number of characters and their location points; Based on the data of people involved in the middle of the journey, the judgment strategy is adjusted midway to form the judgment data for midway adjustment. If it is determined that the projector needs to be adjusted midway, then based on the midway adjustment determination data, midway adjustment strategy is used to generate midway adjustment data, and the projection brightness of the projector is adjusted accordingly.

[0005] As an optional embodiment of the control method for adjusting a projector according to the present invention, the initial adjustment determination strategy includes: Obtain the projection surface; Get the projector location; Obtain the light paths of all projector light sources; Obtain the audience area; Obtain the height of all viewers; Sort all audience heights from largest to smallest, and set the audience height with the largest value as the target height; Starting from the audience area, extend the target height upwards to form the target space; If the light path of the projector's light source does not coincide with the target space, no judgment is made; If the light path of the projector's light source coincides with the target space, the initial adjustment strategy will be executed.

[0006] As an optional embodiment of the control method for adjusting a projector according to the present invention, the initial adjustment strategy includes: The side of the projector containing the lens is identified and designated as the first target surface. Obtain the top edge of the first target surface and define it as the front top edge; Select any point on the top front edge and designate it as the top front target point; Using the previous target point as the origin, draw a perpendicular line downwards to the ground, and define it as the first perpendicular line; Obtain the intersection of the first vertical line and the ground, and designate it as the forward and downward target point; Obtain the distance between the front upper target point and the front lower target point, and define it as the front distance; Obtain the side of the projector that is opposite to the first target surface and designate it as the second target surface; Obtain the top edge of the second target surface and define it as the rear top edge; Select any point on the upper rear edge and designate it as the upper rear target point; From the target point above, take it as the origin and draw a perpendicular line downwards to the ground, which will be the second perpendicular line. Obtain the intersection of the second vertical line and the ground, and set it as the target point for the next downward movement; Obtain the distance between the target point above and the target point below, and define it as the "rear distance"; If the front distance is less than or equal to the back distance, then the first angle adjustment strategy is executed. If the front distance is greater than the back distance, then the second angle adjustment strategy is executed.

[0007] As an optional embodiment of the control method for adjusting the projector described in this invention, the first angle adjustment strategy includes: Connect the front upper target point and the rear upper target point to form the first target connection line; Obtain the angle between the first target connection line and the ground, and set it as the current projector tilt angle; Obtain the maximum tilt angle of the projector; Set the first unit adjustment angle change value; Starting from the current projector tilt angle, calculate the projector adjustment tilt angle between the current projector tilt angle and the projector's maximum tilt angle based on the first unit adjustment angle change value; The projector's tilt angle adjustment includes a first tilt angle adjustment... ... an nth tilt angle adjustment, where the first tilt angle adjustment = current projector tilt angle + unit adjustment angle change value... ... an nth tilt angle adjustment = current projector tilt angle + (unit adjustment angle change value × n); Integrate the first adjusted tilt angle...the nth adjusted tilt angle and the projector's maximum tilt angle to form a set of tilt angles; Extract elements from the set of depression angles one by one, and use them as the target to adjust the depression angle; S1. Adjust the projector's tilt angle to the first adjustable tilt angle; S2. Obtain the light path of the projector's light source and set it as the first adjustment path; S3. If the first adjustment path does not overlap with the target space, stop adjusting the projector; Obtain the projection angle when the projector stops adjusting, and set it as the initial projection angle of the target. If the first adjustment path overlaps with the target space, then obtain the target adjustment angle that is adjacent to the first adjustment angle and is greater than the first adjustment angle, and set it as the second adjustment angle. The first adjustment of the depression angle is defined as the adjustment of the depression angle again, and steps S1-S3 are repeated.

[0008] As an optional embodiment of the control method for adjusting the projector described in this invention, the second angle adjustment strategy includes: Connect the front upper target point and the rear upper target point to form the second target connection line; Obtain the angle between the second target connection line and the ground, and set it as the current projector elevation angle; Obtain the maximum tilt angle of the projector; Set the second unit adjustment angle change value; Starting from the current projector elevation angle, calculate the projector adjustment elevation angle between the current projector elevation angle and the projector's maximum elevation angle based on the second unit adjustment angle change value; The projector's elevation angle adjustment includes a first elevation angle adjustment... ... an nth elevation angle adjustment, where the first elevation angle adjustment = current projector elevation angle + unit adjustment angle change value... ... an nth elevation angle adjustment = current projector elevation angle + (unit adjustment angle change value × n); Integrate the first adjusted elevation angle...the nth adjusted elevation angle and the projector's maximum elevation angle to form an elevation angle set; Extract elements from the set of elevation angles one by one, and use them as the target to adjust the elevation angle; S4. Adjust the projector's tilt angle to the first adjustable tilt angle; S5. Obtain the light path of the projector's light source and set it as the second adjustment path; S6. If the second adjustment path does not overlap with the target space, stop adjusting the projector; Obtain the projection angle when the projector stops adjusting, and set it as the initial projection angle of the target. If the second adjustment path overlaps with the target space, then obtain the target adjustment elevation angle that is adjacent to and greater than the first adjustment elevation angle, and set it as the second adjustment elevation angle. The first adjustment of the elevation angle is defined as the second adjustment of the elevation angle, and steps S4-S6 are repeated.

[0009] As an optional solution to the control method for adjusting the projector described in this invention, the mid-process adjustment determination strategy includes: Obtain the initial projection angle of the target; The projector displays the image based on the initial projection angle of the target. Implement the monitoring area determination strategy to obtain the monitoring area; Real-time acquisition of the number of people within the monitored area; When the number of people in the monitored area is not equal to 0, the people in the monitored area are acquired and designated as target people. Obtain the target character's location and designate it as the first location point; Get the current time and set it as the first time; Set the judgment duration; Calculate the second time: Second time = First time + Judgment duration; Set the data collection interval; Starting from the first time point, calculate the collection time points between the first and second times points based on the collection interval; The data collection time points include the first time point, the second time point, ... the nth time point, where the first time point = the start time point + the data collection interval, the second time point = the start time point + (data collection interval × 2) ... the nth time point = the start time point + (data collection interval × n); Obtain the target person's location at each collection time point and designate it as the collection location point; Obtain the target's location at the second time point and designate it as the second location point; If the second location point is outside the monitoring area, no judgment is made; If the second location point is within the monitoring area, the mid-course adjustment strategy will be implemented.

[0010] As an optional solution to the control method for adjusting the projector described in this invention, the monitoring area determination strategy includes: Obtain the current light path of the projector's light source and set it as the usage path; Obtain the top surface of the target space; Obtain the projection surface; Obtain two edge lines on the top surface of the target space that are perpendicular to the projection plane, and designate them as the first target edge line and the second target edge line, respectively; Obtain the midpoints of the first target's edge line and the second target's edge line respectively, and define them as the midpoints of the first target and the second target respectively; Connect the midpoints of the first and second targets to form the third target connecting line; Translate the third target connection line toward the projection plane until the third target connection line intersects with the usage path; Select any point on the line connecting the third target and define it as arbitrary point; Take any point as the origin and draw a perpendicular line to the ground, which is defined as the third perpendicular line. Obtain the intersection of the third perpendicular line and the ground, and designate it as the first target intersection point; Using the first target intersection point as a reference point, draw a straight line and define it as the target parallel line, where the target parallel line is parallel to the projection plane and parallel to the ground. Acquire the projected image; Obtain the two corner points at the bottom of the projected image and designate them as the first target corner point and the second target corner point, respectively. Taking the inflection points of the first and second targets as origins, draw perpendicular lines to the ground, which are designated as the fourth and fifth perpendicular lines, respectively. Obtain the intersection points of the fourth and fifth perpendicular lines with the ground, and designate them as the intersection points of the second and third targets, respectively. With the intersection points of the second and third targets as origins, draw perpendicular lines to the parallel lines of the targets, and designate them as the sixth and seventh perpendicular lines respectively. Connect the intersection points of the second and third targets to form the fourth target connection line; The closed area formed by the target parallel line, the sixth perpendicular line, the seventh perpendicular line, and the line connecting the fourth target is defined as the monitoring area.

[0011] As an optional embodiment of the control method for adjusting the projector described in this invention, the mid-process adjustment strategy includes: The distance between the sampling locations corresponding to any two adjacent sampling time points is obtained and defined as the first moving distance. The distance between the sampling location point corresponding to the nth time point and the sampling location point corresponding to the second time point is defined as the second movement distance. Calculate the judgment time point: Judgment time point = Start time point + [Sampling interval duration × (n × 60%)] Obtain all the first movement distances from the judgment time point... to the nth time point, and define them as the judgment distance; Set a distance threshold; If the determined distance is less than or equal to the distance threshold, then the determined distance is defined as the close distance; If the determined distance is greater than the distance threshold, then the determined distance is defined as a long distance; Get the quantity over a long distance; If the number of far-distance moves is 0 and the second moving distance is less than or equal to the distance threshold, then a local adjustment strategy is executed. If the number of far-distance items is not equal to 0, or the second moving distance is greater than the distance threshold, then the overall brightness of the projector screen will be reduced.

[0012] As an optional embodiment of the control method for adjusting a projector according to the present invention, the local adjustment strategy includes: The projection of the target person on the projection screen when the target person is at the second position point is defined as the person's projection. Obtain the area of ​​the person's projection on the projected image and define it as the target adjustment area; This will reduce the brightness of the target adjustment area on the projector screen.

[0013] The present invention has the following beneficial effects: 1. The projector adjustment control method can determine whether the light from the projector will be projected onto the audience in the audience area after the projector is turned on and before the projected image is played. This determines whether the projector needs to be initially adjusted. If the initial adjustment is determined to be necessary, the projection angle of the projector is adjusted so that the projector light will not be projected onto the audience in the audience area, thereby reducing the possibility of the projector light being projected onto the eyes of the viewers and causing vision damage. 2. The projector's adjustment control method can detect whether a person remains in the area illuminated by the projector's light for an extended period during the projector's playback. When a person is detected in the area illuminated by the projector's light for a prolonged period, it can further determine whether the person is stationary or moving back and forth. If the person is determined to be moving back and forth in the area illuminated by the projector's light, the overall brightness of the projector image is reduced to minimize eye strain. If the person is determined to be stationary in the area illuminated by the projector's light, the projector image is adjusted according to the person's stationary position, minimizing eye strain while maintaining optimal projection quality. Attached Figure Description

[0014] Figure 1 This is a block diagram of the control method for adjusting the projector according to the present invention; Figure 2 This is a schematic diagram of the front and rear distances of the present invention; Figure 3 This is a schematic diagram of the projector's tilt angle according to the present invention; Figure 4 This is a schematic diagram of the elevation angle of the projector in this invention; Figure 5 This is a schematic diagram of the third target connection line of the present invention; Figure 6 This is a schematic diagram of the monitoring area of ​​the present invention. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example 1, please refer to Figure 1 A control method for adjusting a projector, comprising: Turn on the projector; Acquire initial projection data and audience data; The initial projection data includes the projection surface, the projector position, and the light path of the projector light source. The audience data includes audience area and audience height; Based on the projection data and audience data, an initial adjustment judgment strategy is used to generate initial adjustment judgment data, which is used to determine whether the current projector light will be projected onto the audience when the audience is in the audience area, thereby determining whether the projector needs to be initially adjusted. If it is determined that the projector needs to be initially adjusted, then based on the initial adjustment determination data, the initial adjustment strategy is used to generate initial adjustment data and adjust the projection angle of the projector to determine the target initial projection angle so that the projector light will not be projected onto the audience in the audience area. The initial adjustment data includes the initial projection angle of the target; The projector displays the image based on the initial projection angle of the target. Acquire data on characters during the journey; The data on characters along the way includes the number of characters and their location points; Based on the data of people in the middle of the process, the decision-making strategy for adjusting the middle of the process is used to form the decision-making data for adjusting the middle of the process. This data is used to determine whether people have been in the area that the projector's light can reach for a long time, and thus to determine whether the projector needs to be adjusted in the middle of the process. If it is determined that the projector needs to be adjusted midway, then based on the midway adjustment determination data, the midway adjustment strategy is used to generate midway adjustment data, and the projection brightness of the projector is adjusted to prevent the projector light from damaging people's eyes.

[0017] The aforementioned control method for projector adjustment allows for the initial determination, before the projected image is played, whether the projector's light will be projected onto the audience. This initial adjustment controls the projection angle to prevent direct light from hitting the audience, reducing the likelihood of eye strain. Furthermore, during image playback, the system can detect if anyone remains in the projector's field of vision for an extended period. If such a person is detected, the system adjusts the brightness of the projected image, minimizing eye strain while maintaining optimal projection quality.

[0018] Example 2 is an improvement on Example 1. The projector adjustment control method includes an initial adjustment determination strategy, comprising: Obtain the projection surface; Get the projector location; Obtain the light paths of all projector light sources; Obtain the audience area, which is the ground area where the audience is located; Obtain the height of all viewers; Sort all audience heights from largest to smallest, and set the audience height with the largest value as the target height; Starting from the audience area, extend the target height upwards to form the target space; If the path of the projector's light source does not coincide with the target space, it means that the projector's light will not pass through the target space and will not cause damage to the eyesight of the audience in the audience area, so no judgment is made. If the light path of the projector's light source coincides with the target space, it indicates that the projector's light will pass through the target space, and the projector's light may cause damage to the eyesight of the audience in the audience area. In this case, the initial adjustment strategy will be executed.

[0019] In this embodiment, for the initial adjustment strategy, please refer to [link / reference]. Figure 2 Specifically, it includes: The side of the projector containing the lens is identified and designated as the first target surface. Obtain the top edge of the first target surface and define it as the front top edge; Select any point on the top front edge and designate it as the top front target point; Using the previous target point as the origin, draw a perpendicular line downwards to the ground, and define it as the first perpendicular line; Obtain the intersection of the first vertical line and the ground, and designate it as the forward and downward target point; Obtain the distance between the front upper target point and the front lower target point, and define it as the front distance; Obtain the side of the projector that is opposite to the first target surface and designate it as the second target surface; Obtain the top edge of the second target surface and define it as the rear top edge; Select any point on the upper rear edge and designate it as the upper rear target point; From the target point above, take it as the origin and draw a perpendicular line downwards to the ground, which will be the second perpendicular line. Obtain the intersection of the second vertical line and the ground, and set it as the target point for the next downward movement; Obtain the distance between the target point above and the target point below, and define it as the "rear distance"; If the front distance is less than or equal to the back distance, it indicates that the projector is projecting downwards or horizontally, and the first angle adjustment strategy is executed. If the front distance is greater than the back distance, it indicates that the projector's projection direction is tilted upwards, and the second angle adjustment strategy will be executed.

[0020] In this embodiment, the first angle adjustment strategy specifically includes: Connect the front upper target point and the rear upper target point to form the first target connection line; Obtain the angle between the first target connection line and the ground, and define it as the current projector tilt angle. Figure 3 As shown; Obtain the maximum tilt angle of the projector, wherein the maximum tilt angle of the projector is the maximum tilt angle that the projector can be adjusted to. Set the first unit adjustment angle change value. The first unit adjustment angle change value is the angle change value between two adjacent projector adjustment tilt angles. For example, if the first unit adjustment angle change value is 1, then when adjusting the projector tilt angle, the projector tilt angle will change by 1 degree compared to before the adjustment. Starting from the current projector tilt angle, calculate the projector adjustment tilt angle between the current projector tilt angle and the projector's maximum tilt angle based on the first unit adjustment angle change value; The projector's tilt angle adjustment includes a first tilt angle adjustment... ... an nth tilt angle adjustment, where the first tilt angle adjustment = current projector tilt angle + unit adjustment angle change value... ... an nth tilt angle adjustment = current projector tilt angle + (unit adjustment angle change value × n); Integrate the first adjusted tilt angle...the nth adjusted tilt angle and the projector's maximum tilt angle to form a set of tilt angles; Extract elements from the set of depression angles one by one, and use them as the target to adjust the depression angle; S1. Adjust the projector's tilt angle to the first adjustable tilt angle; S2. Obtain the light path of the projector's light source and set it as the first adjustment path; S3. If the first adjustment path does not overlap with the target space, stop adjusting the projector; Obtain the projection angle when the projector stops adjusting, and set it as the initial projection angle of the target. If the first adjustment path overlaps with the target space, then obtain the target adjustment angle that is adjacent to the first adjustment angle and is greater than the first adjustment angle, and set it as the second adjustment angle. The first adjustment of the depression angle is defined as the adjustment of the depression angle again, and steps S1-S3 are repeated.

[0021] In this embodiment, the second angle adjustment strategy specifically includes: Connect the front upper target point and the rear upper target point to form the second target connection line; Obtain the angle between the second target connection line and the ground, and define it as the current projector elevation angle, such as... Figure 4 As shown; Obtain the maximum elevation angle of the projector, wherein the maximum elevation angle of the projector is the maximum elevation angle that the projector can be adjusted to; Set a second unit adjustment angle change value. The second unit adjustment angle change value is the angle change value between two adjacent projector elevation angles. For example, if the second unit adjustment angle change value is 1, it means that when adjusting the projector elevation angle, the projector elevation angle will change by 1 degree compared to the time before the adjustment. Starting from the current projector elevation angle, calculate the projector adjustment elevation angle between the current projector elevation angle and the projector's maximum elevation angle based on the second unit adjustment angle change value; The projector's elevation angle adjustment includes a first elevation angle adjustment... ... an nth elevation angle adjustment, where the first elevation angle adjustment = current projector elevation angle + unit adjustment angle change value... ... an nth elevation angle adjustment = current projector elevation angle + (unit adjustment angle change value × n); Integrate the first adjusted elevation angle...the nth adjusted elevation angle and the projector's maximum elevation angle to form an elevation angle set; Extract elements from the set of elevation angles one by one, and use them as the target to adjust the elevation angle; S4. Adjust the projector's tilt angle to the first adjustable tilt angle; S5. Obtain the light path of the projector's light source and set it as the second adjustment path; S6. If the second adjustment path does not overlap with the target space, it means that after the projector angle is adjusted, the projector light will not pass through the target space. Therefore, the projector light will not damage the eyesight of the audience in the audience area. Then stop adjusting the projector. Obtain the projection angle when the projector stops adjusting, and set it as the initial projection angle of the target. If the second adjustment path coincides with the target space, it indicates that after the projector angle is adjusted, the projector light will still pass through the target space. Therefore, the projector light may cause damage to the eyesight of the audience in the audience area. In this case, the target adjustment angle that is adjacent to the first adjustment angle and is greater than the first adjustment angle is obtained and is defined as the adjustment angle again. The first adjustment of the elevation angle is defined as the second adjustment of the elevation angle, and steps S4-S6 are repeated.

[0022] Example 3 is an improvement on Example 2. The projector adjustment control method includes a mid-process adjustment judgment strategy, comprising: The initial projection angle of the target is obtained. At the initial projection angle of the target, the projector light will not pass through the target space, so the projector light will not cause damage to the eyesight of the audience in the audience area. The projector displays the image based on the initial projection angle of the target. Implement the monitoring area determination strategy to obtain the monitoring area; Real-time acquisition of the number of people within the monitored area; When the number of people in the monitored area is not equal to 0, the people in the monitored area are acquired and designated as target people. Obtain the target character's location and designate it as the first location point; Get the current time and set it as the first time; Set the judgment duration, which is the time between the first time and the judgment time; Calculate the second time: Second time = First time + Judgment duration; Set the collection interval duration, which is the interval between collecting the location points of the target person, that is, the location point of the target person is collected once every collection interval duration, that is, the collection interval duration is the interval between two adjacent collection time points; Starting from the first time point, calculate the collection time points between the first and second times points based on the collection interval; The data collection time points include the first time point, the second time point, ... the nth time point, where the first time point = the start time point + the data collection interval, the second time point = the start time point + (data collection interval × 2) ... the nth time point = the start time point + (data collection interval × n); Obtain the target person's location at each collection time point and designate it as the collection location point; Obtain the target's location at the second time point and designate it as the second location point; If the second location point is outside the monitoring area, it indicates that the target person has left the monitoring area at the time of the judgment, thus indicating that the target person only briefly passed through the monitoring area, and no judgment is made. If the second location point is within the monitoring area, it indicates that the target person is still within the monitoring area, suggesting that the target person may stay within the monitoring area for a period of time, and thus the mid-way adjustment strategy will be implemented.

[0023] For the monitoring area determination strategy in this embodiment, please refer to [link / reference]. Figure 5 and Figure 6 Specifically, it includes: Obtain the current light path of the projector's light source and set it as the usage path; Obtain the top surface of the target space; Obtain the projection surface; Obtain two edge lines on the top surface of the target space that are perpendicular to the projection plane, and designate them as the first target edge line and the second target edge line, respectively; Obtain the midpoints of the first target's edge line and the second target's edge line respectively, and define them as the midpoints of the first target and the second target respectively; Connect the midpoints of the first and second targets to form the third target connecting line; Translate the third target connection line toward the projection plane until the third target connection line intersects with the usage path; Select any point on the line connecting the third target and define it as arbitrary point; Take any point as the origin and draw a perpendicular line to the ground, which is defined as the third perpendicular line. Obtain the intersection of the third perpendicular line and the ground, and designate it as the first target intersection point; Using the first target intersection point as a reference point, draw a straight line and define it as the target parallel line, where the target parallel line is parallel to the projection plane and parallel to the ground. Acquire the projected image; Obtain the two corner points at the bottom of the projected image and designate them as the first target corner point and the second target corner point, respectively. Taking the inflection points of the first and second targets as origins, draw perpendicular lines to the ground, which are designated as the fourth and fifth perpendicular lines, respectively. Obtain the intersection points of the fourth and fifth perpendicular lines with the ground, and designate them as the intersection points of the second and third targets, respectively. With the intersection points of the second and third targets as origins, draw perpendicular lines to the parallel lines of the targets, and designate them as the sixth and seventh perpendicular lines respectively. Connect the intersection points of the second and third targets to form the fourth target connection line; The closed area formed by the target parallel line, the sixth perpendicular line, the seventh perpendicular line, and the line connecting the fourth target is defined as the monitoring area.

[0024] In this embodiment, the mid-course adjustment strategy specifically includes: The distance between the sampling locations corresponding to any two adjacent sampling time points is obtained and defined as the first moving distance. The distance between the sampling location point corresponding to the nth time point and the sampling location point corresponding to the second time point is defined as the second movement distance. Calculate the judgment time point: Judgment time point = Start time point + [Sampling interval duration × (n × 60%)] Obtain all the first movement distances from the judgment time point... to the nth time point, and define them as the judgment distance; Set a distance threshold, which is used to determine the magnitude of the distance. If the judgment distance is less than or equal to the distance threshold, it means that the position of the target person has not changed significantly between the two adjacent collection time points corresponding to the judgment distance, and the judgment distance is defined as close distance. If the judgment distance is greater than the distance threshold, it indicates that the position of the target person has changed significantly between the two collection time points corresponding to the judgment distance, which means that the target person may need to move back and forth in the monitoring area. Therefore, the judgment distance is defined as the long distance. Get the quantity over a long distance; If the number of long-distance items is 0 and the second moving distance is less than or equal to the distance threshold, it indicates that the position of the target person has not changed significantly between any two adjacent collection time points after the judgment time point, or between the nth time point and the second time point. Only slight changes have occurred, indicating that the target person has not been moving significantly within the monitoring range. The target person may remain in a small position range for a long time, so a local adjustment strategy is implemented. If the number of long-distance measurements is not equal to 0, or the second moving distance is greater than the distance threshold, it indicates that the position of the target person has changed significantly between each two adjacent collection time points after the judgment time point, and between the nth time point and the second time point. This indicates that the target person may have moved significantly within the monitoring range, so the overall brightness of the projector screen should be reduced.

[0025] In this embodiment, the local adjustment strategy specifically includes: The projection of the target person on the projection screen when the target person is at the second position point is defined as the person's projection. Obtain the area of ​​the person's projection on the projected image and define it as the target adjustment area; This will reduce the brightness of the target adjustment area on the projector screen.

[0026] This disclosure also provides a non-transitory computer-readable storage medium that stores computer instructions for causing the computer to execute the projector adjustment control method in the foregoing method embodiments.

[0027] It should be noted that more specific examples of computer-readable storage media may include portable computer disks, hard disks, erasable programmable read-only memories (E2PROMs or flash memory), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this disclosure, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. The computer-readable medium may be included in the aforementioned electronic device or may exist independently, not assembled into the electronic device.

[0028] The aforementioned computer-readable medium carries one or more programs, which, when executed by the electronic device, enable the electronic device to implement the solution provided in the above-described method embodiments.

[0029] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for adjusting a projector, characterized in that: include: Turn on the projector; Acquire initial projection data and audience data; The initial projection data includes the projection surface, the projector position, and the light path of the projector light source. The audience data includes audience area and audience height; Based on the projection data and audience data, initial adjustment judgment data is generated through an initial adjustment judgment strategy; If it is determined that the projector needs initial adjustment, then based on the initial adjustment determination data, initial adjustment data is generated through the initial adjustment strategy to adjust the projection angle of the projector. The initial adjustment data includes the initial projection angle of the target; The projector displays the image based on the initial projection angle of the target. Acquire data on characters during the journey; The data on characters along the way includes the number of characters and their location points; Based on the data of people involved in the middle of the journey, the judgment strategy is adjusted midway to form the judgment data for midway adjustment. If it is determined that the projector needs to be adjusted midway, then based on the midway adjustment determination data, midway adjustment strategy is used to generate midway adjustment data, and the projection brightness of the projector is adjusted accordingly.

2. The control method for adjusting a projector according to claim 1, characterized in that: The initial adjustment determination strategy includes: Obtain the projection surface; Get the projector location; Obtain the light paths of all projector light sources; Obtain the audience area; Obtain the height of all viewers; Sort all audience heights from largest to smallest, and set the audience height with the largest value as the target height; Starting from the audience area, extend the target height upwards to form the target space; If the light path of the projector's light source does not coincide with the target space, no judgment is made; If the light path of the projector's light source coincides with the target space, the initial adjustment strategy will be executed.

3. The control method for adjusting a projector according to claim 2, characterized in that: The initial adjustment strategy includes: The side of the projector containing the lens is identified and designated as the first target surface. Obtain the top edge of the first target surface and define it as the front top edge; Select any point on the top front edge and designate it as the top front target point; Using the previous target point as the origin, draw a perpendicular line downwards to the ground, and define it as the first perpendicular line; Obtain the intersection of the first vertical line and the ground, and designate it as the forward and downward target point; Obtain the distance between the front upper target point and the front lower target point, and define it as the front distance; Obtain the side of the projector that is opposite to the first target surface and designate it as the second target surface; Obtain the top edge of the second target surface and define it as the rear top edge; Select any point on the upper rear edge and designate it as the upper rear target point; From the target point above, take it as the origin and draw a perpendicular line downwards to the ground, which will be the second perpendicular line. Obtain the intersection of the second vertical line and the ground, and set it as the target point for the next downward movement; Obtain the distance between the target point above and the target point below, and define it as the "rear distance"; If the front distance is less than or equal to the back distance, then the first angle adjustment strategy is executed. If the front distance is greater than the back distance, then the second angle adjustment strategy is executed.

4. The control method for adjusting a projector according to claim 3, characterized in that: The first angle adjustment strategy includes: Connect the front upper target point and the rear upper target point to form the first target connection line; Obtain the angle between the first target connection line and the ground, and set it as the current projector tilt angle; Obtain the maximum tilt angle of the projector; Set the first unit adjustment angle change value; Starting from the current projector tilt angle, calculate the projector adjustment tilt angle between the current projector tilt angle and the projector's maximum tilt angle based on the first unit adjustment angle change value; The projector's tilt angle adjustment includes a first tilt angle adjustment... ... an nth tilt angle adjustment, where the first tilt angle adjustment = current projector tilt angle + unit adjustment angle change value... ... an nth tilt angle adjustment = current projector tilt angle + (unit adjustment angle change value × n); Integrate the first adjusted tilt angle...the nth adjusted tilt angle and the projector's maximum tilt angle to form a set of tilt angles; Extract elements from the set of depression angles one by one, and use them as the target to adjust the depression angle; S1. Adjust the projector's tilt angle to the first adjustable tilt angle; S2. Obtain the light path of the projector's light source and set it as the first adjustment path; S3. If the first adjustment path does not overlap with the target space, stop adjusting the projector; Obtain the projection angle when the projector stops adjusting, and set it as the initial projection angle of the target. If the first adjustment path overlaps with the target space, then obtain the target adjustment angle that is adjacent to the first adjustment angle and is greater than the first adjustment angle, and set it as the second adjustment angle. The first adjustment of the depression angle is defined as the adjustment of the depression angle again, and steps S1-S3 are repeated.

5. The control method for adjusting a projector according to claim 3, characterized in that: The second angle adjustment strategy includes: Connect the front upper target point and the rear upper target point to form the second target connection line; Obtain the angle between the second target connection line and the ground, and set it as the current projector elevation angle; Obtain the maximum tilt angle of the projector; Set the second unit adjustment angle change value; Starting from the current projector elevation angle, calculate the projector adjustment elevation angle between the current projector elevation angle and the projector's maximum elevation angle based on the second unit adjustment angle change value; The projector's elevation angle adjustment includes a first elevation angle adjustment... ... an nth elevation angle adjustment, where the first elevation angle adjustment = current projector elevation angle + unit adjustment angle change value... ... an nth elevation angle adjustment = current projector elevation angle + (unit adjustment angle change value × n); Integrate the first adjusted elevation angle...the nth adjusted elevation angle and the projector's maximum elevation angle to form an elevation angle set; Extract elements from the set of elevation angles one by one, and use them as the target to adjust the elevation angle; S4. Adjust the projector's tilt angle to the first adjustable tilt angle; S5. Obtain the light path of the projector's light source and set it as the second adjustment path; S6. If the second adjustment path does not overlap with the target space, stop adjusting the projector; Obtain the projection angle when the projector stops adjusting, and set it as the initial projection angle of the target. If the second adjustment path overlaps with the target space, then obtain the target adjustment elevation angle that is adjacent to and greater than the first adjustment elevation angle, and set it as the second adjustment elevation angle. The first adjustment of the elevation angle is defined as the second adjustment of the elevation angle, and steps S4-S6 are repeated.

6. The control method for adjusting a projector according to claim 4 or 5, characterized in that: The mid-process adjustment judgment strategy includes: Obtain the initial projection angle of the target; The projector displays the image based on the initial projection angle of the target. Implement the monitoring area determination strategy to obtain the monitoring area; Real-time acquisition of the number of people within the monitored area; When the number of people in the monitored area is not equal to 0, the people in the monitored area are acquired and designated as target people. Obtain the target character's location and designate it as the first location point; Get the current time and set it as the first time; Set the judgment duration; Calculate the second time: Second time = First time + Judgment duration; Set the data collection interval; Starting from the first time point, calculate the collection time points between the first and second times points based on the collection interval; The data collection time points include the first time point, the second time point, ... the nth time point, where the first time point = the start time point + the data collection interval, the second time point = the start time point + (data collection interval × 2) ... the nth time point = the start time point + (data collection interval × n); Obtain the target person's location at each collection time point and designate it as the collection location point; Obtain the target's location at the second time point and designate it as the second location point; If the second location point is outside the monitoring area, no judgment is made; If the second location point is within the monitoring area, the mid-course adjustment strategy will be implemented.

7. The control method for adjusting a projector according to claim 6, characterized in that: The monitoring area determination strategy includes: Obtain the current light path of the projector's light source and set it as the usage path; Obtain the top surface of the target space; Obtain the projection surface; Obtain two edge lines on the top surface of the target space that are perpendicular to the projection plane, and designate them as the first target edge line and the second target edge line, respectively; Obtain the midpoints of the first target's edge line and the second target's edge line respectively, and define them as the midpoints of the first target and the second target respectively; Connect the midpoints of the first and second targets to form the third target connecting line; Translate the third target connection line toward the projection plane until the third target connection line intersects with the usage path; Select any point on the line connecting the third target and define it as arbitrary point; Take any point as the origin and draw a perpendicular line to the ground, which is defined as the third perpendicular line. Obtain the intersection of the third perpendicular line and the ground, and designate it as the first target intersection point; Using the first target intersection point as a reference point, draw a straight line and define it as the target parallel line, where the target parallel line is parallel to the projection plane and parallel to the ground. Acquire the projected image; Obtain the two corner points at the bottom of the projected image and designate them as the first target corner point and the second target corner point, respectively. Taking the inflection points of the first and second targets as origins, draw perpendicular lines to the ground, which are designated as the fourth and fifth perpendicular lines, respectively. Obtain the intersection points of the fourth and fifth perpendicular lines with the ground, and designate them as the intersection points of the second and third targets, respectively. With the intersection points of the second and third targets as origins, draw perpendicular lines to the parallel lines of the targets, and designate them as the sixth and seventh perpendicular lines respectively. Connect the intersection points of the second and third targets to form the fourth target connection line; The closed area formed by the target parallel line, the sixth perpendicular line, the seventh perpendicular line, and the line connecting the fourth target is defined as the monitoring area.

8. The control method for adjusting a projector according to claim 7, characterized in that: The mid-course adjustment strategy includes: The distance between the sampling locations corresponding to any two adjacent sampling time points is obtained and defined as the first moving distance. The distance between the sampling location point corresponding to the nth time point and the sampling location point corresponding to the second time point is defined as the second movement distance. Calculate the judgment time point: Judgment time point = Start time point + [Sampling interval duration × (n × 60%)] Obtain all the first movement distances from the judgment time point... to the nth time point, and define them as the judgment distance; Set a distance threshold; If the determined distance is less than or equal to the distance threshold, then the determined distance is defined as the close distance; If the determined distance is greater than the distance threshold, then the determined distance is defined as a long distance; Get the quantity over a long distance; If the number of far-distance moves is 0 and the second moving distance is less than or equal to the distance threshold, then a local adjustment strategy is executed. If the number of far-distance items is not equal to 0, or the second moving distance is greater than the distance threshold, then the overall brightness of the projector screen will be reduced.

9. The control method for adjusting a projector according to claim 8, characterized in that: The local adjustment strategy includes: The projection of the target person on the projection screen when the target person is at the second position point is defined as the person's projection. Obtain the area of ​​the person's projection on the projected image and define it as the target adjustment area; This will reduce the brightness of the target adjustment area on the projector screen.

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