Projection picture correction method of projector and projection equipment

Abstract

The invention discloses a projection picture correction method of a projector and projection equipment, and the method comprises the steps: projecting a calibration interface on a projection background, and displaying a manual focusing operation guide for focal length calibration and a manual correction operation guide for rectangle correction on the calibration interface; and in response to a manual focusing instruction corresponding to the manual focusing operation guide, performing focal length calibration on the calibration interface, and in response to a manual calibration instruction corresponding to the manual calibration operation guide, performing rectangular calibration on the calibration interface. In this way, the problem that image correction of the projector is inconvenient can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of projection equipment, and in particular to a projection picture correction method and a projection equipment of a projector. Background Art

[0002] A projector is a device that can project images or videos onto a screen and can be widely used in homes, offices, conference rooms, schools, cinemas or other entertainment venues. However, most current projectors have the problem of inconvenient image correction. Summary of the invention

[0003] The present application provides a projection picture correction method and a projection device of a projector, which can make the image correction of the projector more convenient.

[0004] To solve the above technical problems, in a first aspect, the present application provides a method for correcting a projection image of a projector, comprising: projecting a calibration interface on a projection background, and displaying manual focus operation instructions for focal length calibration and manual correction operation instructions for rectangular correction on the calibration interface; in response to a manual focus instruction corresponding to the manual focus operation instruction, performing focal length calibration on the calibration interface, and in response to a manual correction instruction corresponding to the manual correction operation instruction, performing rectangular calibration on the calibration interface.

[0005] The beneficial effect of the present application is that, different from the related art, the calibration interface projected by the projector may include a manual focus operation guide and a manual correction operation guide. During the process of the projector projecting the calibration interface, the projector may adjust the focus in response to the manual focus instruction, and may also perform rectangle calibration in response to the manual correction operation instruction. In this case, the projector can conveniently perform focus calibration and rectangle calibration.

[0006] Optionally, before projecting the calibration interface on the projection background, the method further includes: obtaining the number of times the intelligent calibration instruction is triggered within the first preset time period; determining whether the number is greater than or equal to a predetermined number; if so, projecting a prompt interface on the projection background, and displaying a prompt message on the prompt interface prompting the user to perform manual calibration; in response to the manual calibration instruction, projecting the calibration interface on the projection background. In this case, when multiple intelligent calibration instructions are identified, it can be intelligently determined that the projector is most likely not fully calibrated, and thus the user can be reminded to perform manual calibration.

[0007] Optionally, after the prompt interface is projected on the projection background, the method includes: determining whether a manual calibration instruction is received within a second preset time period after the prompt interface is projected; if so, executing in response to the manual calibration instruction, projecting the calibration interface on the projection background; if not, after the second preset time, the prompt interface is no longer projected or the prompt information is not displayed on the prompt interface. In this case, when the user responds in time and issues a manual calibration instruction, the calibration interface can be projected; when the user does not respond in time, it can be determined that the user is unlikely to have a need for manual calibration, and the prompt interface can no longer be projected or the prompt information can no longer be displayed on the prompt interface to reduce the impact of the prompt interface or the prompt information on the user's viewing experience.

[0008] Optionally, after projecting the prompt interface on the projection background, it includes: determining whether a cancellation command is received within a second preset time after projecting the prompt interface; if so, in response to the cancellation command, no longer projecting the prompt interface or not displaying the prompt information on the prompt interface.

[0009] Optionally, before projecting the calibration interface on the projection background, the method further includes: determining whether a manual calibration instruction is received, and if so, projecting the calibration interface on the projection background. In this case, the user can calibrate the projection device by actively issuing a manual calibration instruction.

[0010] Optionally, a manual focus operation guide for focal length calibration and a manual correction operation guide for rectangle correction are displayed on the calibration interface, including: displaying a manual focus operation guide, a manual correction operation guide, and a troubleshooting operation guide on the calibration interface; the projection picture correction method also includes: in response to a troubleshooting operation instruction corresponding to the troubleshooting operation guide, displaying a fault prompt information on the calibration interface, the fault prompt information is used to prompt the fault information and the corresponding solution. In this case, if the user manually performs focal length calibration and rectangle calibration, and there is still no way to make the calibration interface of the projection device meet expectations, the customer can be promptly reminded of possible fault information to facilitate the user to troubleshoot.

[0011] Optionally, the manual focus operation guide includes a focus prompt pattern of an adjustable focus range, and the focus prompt pattern displays a current focus position corresponding to the current focal length; and performing focus calibration on the calibration interface includes: performing focus calibration on the calibration interface and adjusting the position of the current focus position in the adjustable focus range of the focus prompt pattern accordingly. In this case, the focus calibration can be visualized, so that the user can intuitively understand the relationship between the current focus position and the adjustable focus range.

[0012] Optionally, the manual correction operation instructions include a correction prompt pattern, which includes a first button pattern for pitch angle adjustment and a second button pattern for yaw angle adjustment; in response to the manual correction instructions corresponding to the manual operation instructions, a rectangular calibration is performed on the calibration interface, including: in response to the pitch angle adjustment instruction corresponding to the first button pattern, a vertical rectangular calibration is performed on the calibration interface; in response to the yaw angle adjustment instruction corresponding to the second button pattern, a horizontal rectangular calibration is performed on the calibration interface.

[0013] Optionally, after projecting the calibration interface on the projection background, the method includes: projecting a fine-tuning interface on the projection background, the fine-tuning interface being used to display a projection position adjustment operation guide; and adjusting the position of the fine-tuning interface projected on the projection background in response to a position adjustment operation instruction corresponding to the position adjustment operation guide. In this case, the user can conveniently adjust the position of the fine-tuning interface after completing the focus calibration and / or rectangle calibration.

[0014] Optionally, before projecting the calibration interface on the projection background, the method includes: obtaining an intelligent calibration result, and if the intelligent calibration result is a calibration failure, projecting a prompt interface on the projection background, and displaying a prompt message on the prompt interface to prompt the user to perform manual calibration.

[0015] In a second aspect, the present application provides a projection device, which includes a projection component, a processor and a memory, the memory and the projection component are coupled to the processor, the memory is used to store program instructions, and the processor reads the program instructions to implement a projection image correction method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the working scene of the projection equipment;

[0017] Figure 2 It is a flow chart of the projection picture correction method;

[0018] Figure 3 It is a flow chart of a method for projecting image correction triggered by a projection device;

[0019] Figure 4 This is a schematic diagram of the pop-up prompt interface in the projection screen;

[0020] Figure 5 is a schematic diagram of the calibration interface;

[0021] Figure 6 It is a schematic diagram of the principle of vertical rectangular calibration of the calibration interface;

[0022] Figure 7 It is a schematic diagram of the principle of horizontal rectangular calibration of the calibration interface;

[0023] Figure 8It is a schematic diagram of the principle of adjusting the position of the fine-tuning interface projected on the projection background. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The following embodiment of the projection device of the present application describes an exemplary structure of the projection device 100 .

[0026] The projection device 100 is a device that can project an image or video onto a projection background 200 for display or playback. In some embodiments, the projection background 200 can be a wall or a curtain. The projection device 100 can specifically be a projector, or can be other electronic devices with a projection function. Specifically, the projector can also be a liquid crystal (LCD) projector, a digital light processing (DLP) projector, or a liquid crystal on silicon (LCOS, Liquid Crystal on Silicon) projector.

[0027] See also Figure 1 The projection device 100 generally includes a projection component 101, a processor 102 and a memory 103. The memory 103 and the projection component 101 are coupled to the processor 102. The memory 103 is used to store program instructions. The processor 102 reads the program instructions to implement the projection image correction method.

[0028] After long-term research, the inventor of the present application found that when most projectors are in manual correction mode, focus calibration and rectangle calibration are usually separated. That is, the focus calibration page and rectangle calibration page in the calibration interface usually appear independently of each other. If the user wants to perform both focus calibration and rectangle calibration, it is necessary to switch between different calibration pages, which is troublesome. In order to solve the above technical problems, the present application proposes the following embodiments.

[0029] The following embodiment of the projection picture correction method of the present application describes an exemplary process of the projection picture correction method of a projector.

[0030] See also Figure 2The method for correcting the projection image of the projector may include: step S10: projecting a calibration interface 300 on the projection background 200, and displaying a manual focus operation guide for focal length calibration and a manual correction operation guide for rectangular correction on the calibration interface 300; step S20: performing focal length calibration on the calibration interface 300 in response to a manual focus instruction corresponding to the manual focus operation guide, and performing rectangular calibration on the calibration interface 300 in response to a manual correction instruction corresponding to the manual correction operation guide.

[0031] Different from the related art, the calibration interface 300 projected by the projector may include a manual focus operation guide and a manual correction operation guide. During the process of the projector projecting the calibration interface 300, the projector may perform focus adjustment in response to the manual focus instruction, and may also perform rectangle calibration in response to the manual correction operation instruction. In this case, the projector can conveniently perform focus calibration and rectangle calibration.

[0032] In addition, in step S20, it can be further divided into responding to the manual focus instruction corresponding to the manual focus operation guide, performing focal length calibration on the calibration interface 300 (step S21); and responding to the manual correction instruction corresponding to the manual correction operation guide, performing rectangle calibration on the calibration interface 300 (step S22). Wherein, step S21 and step S22 are independent of each other.

[0033] This means that: if the projection device 100 only receives the manual focus instruction, only step S21 may be executed; if the projection device 100 only receives the manual correction instruction, only step S22 may be executed; if the projection device 100 first receives the manual focus instruction and then receives the manual correction instruction, step S21 may be executed first and then step S22 may be executed; if the projection device 100 first receives the manual correction instruction and then receives the manual focus instruction, step S22 may be executed first and then step S21 may be executed. In addition, if the projection device 100 receives both the manual focus instruction and the manual correction instruction, step S21 and step S22 may be executed at the same time, or any one of step S21 and step S22 may be executed, or step S21 and step S22 may not be executed.

[0034] It should be noted that the above-mentioned projection picture correction method can be performed when the projection device 100 is in the manual calibration mode. As a distinction, the projection device 100 can be in a working state or an automatic correction state (including focus calibration or rectangle calibration, etc.) when the above-mentioned calibration interface 300 is not projected, so as to perform projection playback of the object to be projected. When the projection device 100 is not in the above-mentioned manual calibration mode, it may not respond to the manual focus instruction and the manual correction instruction, thereby maintaining the stability of the picture projected by the projection device 100.

[0035] The above projection picture correction method is mainly for the user to manually calibrate the projection device 100. In addition, the projection device 100 can also perform intelligent calibration. For example, the projection device 100 can determine whether the clarity of the projection picture meets the requirements and whether the projection picture is a rectangle to perform intelligent calibration. The projection picture correction method involved in the present application can be a supplement to the intelligent calibration. For example, when the projection device cannot project a clear and square projection picture during intelligent calibration, the user can correct it through the projection picture correction method involved in the present application. Of course, the user can also actively choose intelligent calibration or the projection picture correction method involved in the present application for correction.

[0036] Optionally, before step S10, the method includes: obtaining the intelligent calibration result, and if the intelligent calibration result is a calibration failure, projecting a prompt interface on the projection background, and displaying a prompt message on the prompt interface to prompt the user to perform manual calibration. Of course, if the intelligent calibration result is a calibration success, the user does not need to perform manual calibration.

[0037] Among them, whether the intelligent correction is successful can be determined by obtaining the number of intelligent correction instructions issued by the user. Of course, in other examples, the intelligent correction result can also be determined by machine vision (for example, the projection device 100 monitors the image of the projection screen through an image acquisition device at all times).

[0038] See also Figure 3 , optionally, before step S10, the method further includes: step S01: obtaining the number of times the intelligent calibration instruction is triggered within a first preset time period; step S02: determining whether the number is greater than or equal to a predetermined number; if so, executing step S03: projecting a prompt interface 305 on the projection background 200, and displaying a prompt message prompting the user to perform manual calibration on the prompt interface 305 (see Figure 4 ); Step S05: In response to the manual calibration instruction, a calibration interface 300 is projected on the projection background 200.

[0039] In this case, when multiple intelligent correction instructions are recognized, it can be intelligently determined that the projector is most likely not fully calibrated, and the user can be reminded to calibrate manually.

[0040] That is to say, Figure 4As shown, if the projection device 100 recognizes the smart calibration instruction multiple times in a short period of time (for example, the user triggers the smart calibration function more than 3 times within 1 minute), it can be judged that the user is likely to encounter the problem that the projection screen is unclear or the projection screen is rectangular. At this time, the projection device 100 can pop up a prompt box (that is, the above-mentioned prompt interface 305) in the projection screen to prompt the user to manually calibrate the projection device 100. Among them, the projection screen can refer to the overall screen projected by the projection device 100 on the projection background 200. Optionally, the first preset time can be 1 minute, or 30 seconds or 2 minutes.

[0041] See also Figure 3 Optionally, after step S03, the following may be included: step S04: determining whether a manual calibration instruction is received within a second preset time period after the prompt interface 305 is projected; if so, executing step S05; if not, executing step S06: not projecting the prompt interface 305 or not displaying the prompt information on the prompt interface 305 after the second preset time has passed. In this case, when the user responds in time and issues a manual calibration instruction, the calibration interface 300 may be projected; when the user does not respond in time, it may be determined that the user has a high probability of not requiring manual calibration, and the prompt interface 305 may not be projected or the prompt information may not be displayed on the prompt interface 305 to reduce the impact of the prompt interface 305 or the prompt information on the user's viewing experience.

[0042] Optionally, after step S03, the following includes: step S07: determining whether a cancellation instruction is received within a second preset time after the prompt interface 305 is projected; if so, executing step S08: responding to the cancellation instruction, no longer projecting the prompt interface 305 or not displaying prompt information on the prompt interface 305.

[0043] Taking the second preset time as 10 seconds as an example, the prompt interface 305 may automatically disappear after 10 seconds, or be closed upon receiving a cancel instruction within 10 seconds. Optionally, the second preset time may be 5 to 20 seconds.

[0044] Considering that the projection device 100 also needs to be actively calibrated, in some examples, the user can also directly send a manual calibration instruction to the projection device 100 through a remote control or a mechanical switch (button) set on the projection device 100.

[0045] Optionally, before step S10, the method further includes: determining whether a manual calibration instruction is received, and if so, projecting a calibration interface 300 (see Figure 5 ). In this case, the user can calibrate the projection device 100 by actively issuing a manual calibration instruction.

[0046] Optionally, step S10 also includes: displaying manual focus operation instructions, manual correction operation instructions and troubleshooting operation instructions on the calibration interface 300. Correspondingly, the projection picture correction method also includes: step S23: in response to the troubleshooting operation instructions corresponding to the troubleshooting operation instructions, displaying fault prompt information on the calibration interface 300. Among them, the fault prompt information can be used to prompt fault information and corresponding solutions. In this case, if the user manually performs focal length calibration and rectangle calibration, and there is still no way to make the calibration interface 300 of the projection device 100 meet expectations, the customer can be promptly reminded of possible fault information to facilitate user troubleshooting.

[0047] In some examples, fault prompt information may include: 1: The position of the projection device 100 is unstable, please place the projector steadily; 2: The screen is uneven, please select a flat projection screen; 3: The lens is dirty, please clean the lens; 4: The parameters of the projection device 100 are set incorrectly, please refer to the manual to adjust the device parameters; 5: The projector is faulty, please contact the manufacturer for repair.

[0048] Optionally, the manual focus operation guide includes a focus prompt pattern 310 of an adjustable focus range, and the focus prompt pattern 310 displays a current focus position corresponding to the current focal length. Correspondingly, step S21 may include: performing a focus calibration on the calibration interface 300 and adjusting the position of the current focus position in the adjustable focus range of the focus prompt pattern 310 accordingly. In this case, the focus calibration can be visualized, so that the user can intuitively understand the relationship between the current focus position and the adjustable focus range. In addition, the relationship between the current focus position and the adjustable focus range can be displayed in real time to facilitate the user to make relevant decisions on focusing.

[0049] In addition, as mentioned above, the projector may be of different types, and thus the working principles of focus adjustment are different. For example, mechanical focus (controlling the movement of the focusing lens) or digital focus may be performed. Therefore, the projector can achieve focus calibration in a variety of ways, which are not specifically limited here.

[0050] Optionally, the manual calibration operation guide includes a calibration prompt pattern 320, and the calibration prompt pattern 320 includes a first button pattern 321 for pitch angle adjustment and a second button pattern 322 for yaw angle adjustment. Correspondingly, step S22 may include: in response to the pitch angle adjustment instruction corresponding to the first button pattern 321, performing a vertical rectangular calibration on the calibration interface 300; in response to the yaw angle adjustment instruction corresponding to the second button pattern 322, performing a horizontal rectangular calibration on the calibration interface 300.

[0051] In this case, if Figure 6As shown, when the calibration interface 300 (or the projection screen) is presented as having unequal widths on the upper and lower sides, the user can issue a vertical rectangular calibration instruction to the projection device 100 to adjust the calibration interface 300 (or the projection screen) to a rectangle. Figure 7 As shown, when the calibration interface 300 (or the projection screen) is presented with unequal heights on the left and right sides, the user can send a horizontal rectangle calibration instruction to the projection device 100 to adjust the calibration interface 300 (or the projection screen) to a rectangle.

[0052] As mentioned above, the projector device may be of different types, and thus the principles of rectangular calibration (also called trapezoidal calibration) may be different. For example, optical trapezoidal calibration (i.e., adjusting the physical position of the lens to achieve the purpose of adjusting the trapezoid) or digital trapezoidal calibration (i.e., using a software interpolation algorithm to scan the projection background 200, and then adjusting and compensating based on the scanning amplitude to achieve the purpose of correction) may be performed. Therefore, users may implement rectangular calibration in a variety of ways, and no specific restrictions are made herein.

[0053] Alternatively, if Figure 8 As shown, after the calibration interface 300 is projected on the projection background 200, the following steps are included: projecting a fine-tuning interface 350 on the projection background 200, the fine-tuning interface 350 being used to display a projection position adjustment operation guide; and adjusting the position of the fine-tuning interface 350 projected on the projection background 200 in response to a position adjustment operation instruction corresponding to the position adjustment operation guide. In this case, the user can conveniently adjust the position of the fine-tuning interface 350 after completing the focus calibration and / or the rectangle calibration.

[0054] Optionally, when the projection screen projected by the projection device 100 is not located at the desired position in the projection background 200 (for example, the center of the projection background 200), the user can control the corresponding buttons (for example, the up button, the down button, the left button, and the right button) according to the fine-tuning operation instructions to control the position of the fine-tuning interface 350 in the projection background 200, so that the projection screen projected by the projection device 100 is located as a whole at the desired position in the projection background 200 (for example, the center).

[0055] Optionally, in other embodiments, the position adjustment operation guide is used to prompt the user to adjust the positions of the four corner points of the fine-tuning interface 350 (or the projection screen). Correspondingly, the position adjustment operation instruction may include at least four corner point position adjustment instructions (e.g., a first corner point position adjustment instruction, a second corner point position adjustment instruction, a third corner point position adjustment instruction, and a fourth corner point position adjustment instruction).

[0056] Specifically, the first corner point position adjustment instruction can be used to adjust the position of the corner point of the upper left corner of the fine-tuning interface 350 (or the projected screen) to move left and right and up and down. The second corner point position adjustment instruction can be used to adjust the position of the corner point of the upper right corner of the fine-tuning interface 350 (or the projected screen) to move left and right and up and down. The third corner point position adjustment instruction can be used to adjust the position of the corner point of the lower left corner of the fine-tuning interface 350 (or the projected screen) to move left and right and up and down. The fourth corner point position adjustment instruction can be used to adjust the lower right corner of the fine-tuning interface 350 (or the projected screen) to move left and right and up and down.

[0057] In addition, considering that the projection screen needs to remain rectangular, if the up and down movement and left and right movement of the four corner points are not related to each other, the difficulty of adjusting the projection screen may be increased. Optionally, the first corner point position adjustment instruction is associated with the second corner point position adjustment instruction. Specifically, either of the first corner point position adjustment instruction and the second corner point position adjustment instruction can be used to control the corner point of the upper left corner and the corner point of the upper right corner to move up and down synchronously. Similarly, the third corner point position adjustment instruction is associated with the fourth corner point position adjustment instruction, so that either of the two can be used to control the corner point of the lower left corner and the corner point of the lower right corner to move up and down synchronously. The first corner point position adjustment instruction is associated with the third corner point position adjustment instruction, so that either of the two can be used to control the corner point of the upper left corner and the corner point of the lower left corner to move left and right synchronously. The second corner point position adjustment instruction is associated with the third corner point position adjustment instruction, so that either of the two can be used to control the corner point of the upper right corner and the corner point of the lower right corner to move left and right synchronously.

[0058] In addition, considering that the projection screen may need to be maintained as a rectangle with a preset aspect ratio (the preset aspect ratio refers to the ratio of the length and width of the rectangle) so that the projected object is distorted as much as possible, the first corner point position adjustment instruction can be associated with the second corner point position adjustment instruction and the third corner point position adjustment instruction at the same time. Specifically, the first corner point position adjustment instruction can control the corner point of the upper left corner and the corner point of the lower left corner to move left and right synchronously, and control the corner point of the upper left corner and the corner point of the upper right corner to move up and down synchronously, and the ratio of the distance of the corner point of the upper left corner (corner point of the lower left corner) moving left and right to the distance of the corner point of the upper left corner (corner point of the upper right corner) moving up and down synchronously is the preset aspect ratio. Similarly, the second corner point position adjustment instruction can be associated with the first corner point position adjustment instruction and the fourth corner point position adjustment instruction at the same time. The third corner point position adjustment instruction can be associated with the first corner point position adjustment instruction and the fourth corner point position adjustment instruction at the same time. The fourth corner point position adjustment instruction can be associated with the second corner point position adjustment instruction and the fourth corner point position adjustment instruction at the same time.

[0059] That is, in response to the position adjustment operation instruction corresponding to the position adjustment operation guide, adjusting the position of the fine-tuning interface 350 projected on the projection background 200 may include: corresponding to at least four corner point position adjustment instructions, adjusting the positions of the four corner points of the fine-tuning interface 350.

[0060] Optionally, after projecting the fine-tuning interface 350 or the calibration interface 300 on the projection background 200, it further includes: determining whether a cancel instruction or a completion instruction is received, and if so, no longer projecting the fine-tuning interface 350 or the calibration interface 300. In this case, the user can exit the calibration mode or the fine-tuning mode through an instruction.

[0061] Optionally, after projecting the fine-tuning interface 350 or the calibration interface 300 on the projection background 200, the method further includes: determining whether a position adjustment operation instruction, a troubleshooting operation instruction, a manual focus instruction, or a manual correction instruction is received within a third preset time, and if not, the fine-tuning interface 350 or the calibration interface 300 is no longer projected after the third preset time. The third preset time may be 5-30 seconds.

[0062] See also Figure 5 , the user can combine the relevant text description "use the volume button to calibrate the focus, the direction keys to calibrate the rectangle, long press the confirmation button to troubleshoot, and double-click the confirmation button to adjust the projection interface position". When the user presses the up button and the down button of the remote control corresponding to the first button pattern 321, an elevation adjustment instruction can be issued to the projection device 100; when the user presses the left button and the right button of the remote control corresponding to the second button pattern 322, a yaw adjustment instruction can be issued to the projection device 100; similarly, when the user long presses the confirmation button of the remote control, a troubleshooting operation instruction can be issued to the projection device 100; when the user double-clicks the confirmation button of the remote control, a position adjustment operation instruction can be issued to the projection device 100.

[0063] It should be noted that the fine-tuning interface 350 can be a new interface different from the calibration interface 300. In this case, when the projection device 100 projects the fine-tuning interface 350, it switches to the fine-tuning mode (different from the calibration mode). In this case, when the projection device 100 is in the calibration mode, the user can issue corresponding manual correction instructions to the projection device 100 through the up key, down key, left key and right key of the remote control to perform rectangular calibration; when the projection device 100 is in the fine-tuning mode, the user can also issue position adjustment operation instructions different from the manual correction instructions to the projection device 100 through the up key, down key, left key and right key of the remote control, thereby reducing the number of buttons of the remote control, making the structure of the remote control simpler and reducing the user's learning cost.

[0064] In addition, the fine-tuning interface 350 may be a part of the calibration interface 300 (e.g., a prompt box or a rectangular pattern), or may be equivalent to the calibration interface 300 (i.e., the fine-tuning interface 350 and the calibration interface 300 are only distinguished in words for the convenience of description). That is, in this case, the projection device 100 may not have the above-mentioned fine-tuning mode. In this case, the user may issue different instructions (e.g., position adjustment operation instructions, manual correction instructions, manual focus instructions) to the projection device 100 through different buttons, thereby enabling simultaneous adjustment of multiple parameters of the projection device 100.

[0065] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for correcting a projection image of a projector, characterized in that: include: Projecting a calibration interface on the projection background, and displaying a manual focus operation guide for focal length calibration and a manual correction operation guide for rectangle correction on the calibration interface; In response to a manual focus instruction corresponding to the manual focus operation guide, the calibration interface is subjected to focus calibration, and in response to a manual correction instruction corresponding to the manual correction operation guide, the calibration interface is subjected to rectangle calibration.

2. The projection image correction method according to claim 1, characterized in that: Before projecting the calibration interface on the projection background, the method further includes: Obtaining the number of times the intelligent correction instruction is triggered within a first preset time period; Determining whether the number is greater than or equal to a predetermined number; If yes, projecting a prompt interface on the projection background, and displaying prompt information on the prompt interface to prompt the user to perform manual calibration; In response to the manual calibration instruction, the step of projecting the calibration interface on the projection background is performed.

3. The projection image correction method according to claim 2, characterized in that: After the prompt interface is projected on the projection background, the method includes: Determining whether the manual calibration instruction is received within a second preset time period after the prompt interface is projected; If so, executing the step of projecting a calibration interface on the projection background in response to the manual calibration instruction; If not, the prompt interface is no longer projected or the prompt information is not displayed on the prompt interface after the second preset time has passed.

4. The projection image correction method according to claim 2, characterized in that: After the prompt interface is projected on the projection background, the method includes: Determining whether a cancellation instruction is received within a second preset time after the prompt interface is projected; If so, in response to the cancel instruction, the prompt interface is no longer projected or the prompt information is not displayed on the prompt interface.

5. The projection image correction method according to claim 1, characterized in that: Before projecting the calibration interface on the projection background, the method further includes: Determine whether a manual calibration instruction is received, and if so, execute the step of projecting a calibration interface on the projection background.

6. The projection image correction method according to claim 1, characterized in that: The step of displaying a manual focusing operation guide for focal length calibration and a manual correction operation guide for rectangle correction on the calibration interface includes: Displaying the manual focusing operation guide, the manual correction operation guide, and the troubleshooting operation guide on the calibration interface; The projection picture correction method also includes: In response to the troubleshooting operation instruction corresponding to the troubleshooting operation guide, fault prompt information is displayed on the calibration interface, and the fault prompt information is used to prompt fault information and corresponding solutions.

7. The projection image correction method according to claim 1, characterized in that: The manual focus operation guide includes a focus prompt pattern of an adjustable focus range, and the focus prompt pattern displays a current focus position corresponding to a current focal length; The step of calibrating the focus of the calibration interface comprises: The calibration interface is subjected to focus calibration and the position of the current focus position in the focus adjustable range of the focus prompt pattern is adjusted accordingly.

8. The projection image correction method according to claim 1, characterized in that: The manual correction operation guide includes a correction prompt pattern, and the correction prompt pattern includes a first button pattern for pitch angle adjustment and a second button pattern for yaw angle adjustment; The step of performing rectangular calibration on the calibration interface in response to the manual correction instruction corresponding to the manual operation guide comprises: In response to the pitch angle adjustment instruction corresponding to the first button pattern, performing vertical rectangular calibration on the calibration interface; In response to the yaw angle adjustment instruction corresponding to the second button pattern, the calibration interface is calibrated into a horizontal rectangle.

9. The projection image correction method according to claim 1, characterized in that: After projecting the calibration interface on the projection background, the method further comprises: Projecting a fine-tuning interface on the projection background, the fine-tuning interface being used to display a projection position adjustment operation guide; In response to a position adjustment operation instruction corresponding to the position adjustment operation guide, a position where the fine-tuning interface is projected on the projection background is adjusted.

10. The projection image correction method according to claim 1, characterized in that: Before projecting the calibration interface on the projection background, the method includes: The intelligent calibration result is obtained. If the intelligent calibration result is a calibration failure, a prompt interface is projected on the projection background, and prompt information prompting the user to perform manual calibration is displayed on the prompt interface.

11. A projection device, characterized in that: Projection component; A processor and a memory, wherein the memory and the projection component are coupled to the processor, the memory is used to store program instructions, and the processor reads the program instructions to implement the projection image correction method described in any one of claims 1-10.

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