CN105578163B - Information processing method and electronic equipment - Google Patents
Information processing method and electronic equipment Download PDFInfo
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- CN105578163B CN105578163B CN201511032712.2A CN201511032712A CN105578163B CN 105578163 B CN105578163 B CN 105578163B CN 201511032712 A CN201511032712 A CN 201511032712A CN 105578163 B CN105578163 B CN 105578163B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/317—Convergence or focusing systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability
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Abstract
The invention discloses an information processing method and electronic equipment, wherein the information processing method comprises the following steps: when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged; if yes, determining a projection angle correction value corresponding to the pixel point; and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected. The method provided by the invention solves the technical problem that image distortion is easy to generate when the electronic equipment projects the image to be projected in the prior art.
Description
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to an information processing method and an electronic device.
Background
With the continuous development of science and technology, intelligent electronic devices such as smart phones and tablet computers are increasingly popularized in daily life of people. In order to meet the projection requirements of people, many intelligent electronic devices have a projection module for projection of users. When the projection function is implemented, in the prior art, when the electronic device projects a projection area of projection content, image distortion often occurs, such as: when a rectangular image is projected, the projected image projected to the projection area is trapezoidal. Therefore, the electronic equipment in the prior art is easy to generate image distortion when projecting an image to be projected.
Disclosure of Invention
The embodiment of the invention provides an information processing method and electronic equipment, which are used for solving the technical problem that image distortion is easy to generate when the electronic equipment projects an image to be projected in the prior art.
An embodiment of the present invention provides an information processing method, including:
when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged;
if yes, determining a projection angle correction value corresponding to the pixel point;
and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected.
Optionally, the determining whether the projection angle of the pixel point needs to be corrected specifically includes:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
Optionally, based on the included angle, it is determined whether the projection angle of the pixel point needs to be corrected, and the method specifically includes:
judging whether the included angle is larger than a preset angle or not;
and if the included angle is larger than the preset angle, determining that the projection angle of the pixel point needs to be corrected.
Optionally, the determining the projection angle correction amount corresponding to the pixel point specifically includes:
obtaining the position variation of the pixel point in the projection area relative to a reference pixel point when the pixel point is projected at the initial projection angle;
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and determining the projection angle correction amount based on the position variation and the included angle.
Optionally, the projecting the pixel point to the projection area according to the redetermined projection angle specifically includes:
adjusting the reflection angle of a reflection unit to the re-determined projection angle, so that laser light emitted by a laser emitter and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
Another aspect of an embodiment of the present invention provides an electronic device, including:
the at least one processor is used for judging whether the projection angle of each pixel point needs to be corrected or not when each pixel point in the image to be projected is projected in sequence through laser projection by obtaining and operating the at least one program module; if yes, determining a projection angle correction value corresponding to the pixel point; based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected;
and the projection lens is connected with the processor and receives a correction instruction of the processor.
Optionally, the at least one processor is further configured to:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
Optionally, the at least one processor is further configured to:
judging whether the included angle is larger than a preset angle or not;
and if the included angle is larger than the preset angle, determining that the projection angle of the pixel point needs to be corrected.
Optionally, the at least one processor is further configured to:
obtaining the position variation of the pixel point in the projection area relative to a reference pixel point when the pixel point is projected at the initial projection angle;
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and determining the projection angle correction amount based on the position variation and the included angle.
Optionally, the at least one processor is further configured to:
controlling a reflection angle of a reflection unit of the electronic equipment to be adjusted to the re-determined projection angle, so that laser light emitted by a laser emitter of the electronic equipment and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
Another aspect of an embodiment of the present invention provides an electronic device, including:
the first judgment unit is used for judging whether the projection angle of each pixel point needs to be corrected or not when each pixel point in the image to be projected is projected in sequence through laser projection;
a first determining unit, configured to determine a projection angle correction amount corresponding to the pixel point if yes;
and the first projection unit is used for re-determining the projection angle of the pixel point based on the projection angle correction value, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
1. according to the technical scheme in the embodiment of the application, when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged; if yes, determining a projection angle correction value corresponding to the pixel point; and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so as to carry out correction of the projection angle for each pixel point in the image to be projected. Therefore, when the electronic equipment projects the pixels in the image to be projected to the projection area in sequence at a high frequency in a laser projection mode, the projection angle of each pixel needs to be corrected, and the projection picture projected to the projection area cannot be distorted.
2. According to the technical scheme in the embodiment of the application, the included angle between the plane where the projection lens is located and the plane where the projection area is located is obtained; and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle. Therefore, when each pixel is projected, the electronic device needs to determine whether the electronic device is in a state of projection image distortion, and then when the electronic device is determined to be in the state of projection image distortion, the projection angle corresponding to each projected pixel is corrected, so that the projection image can be truly restored, therefore, the reality of the projection image is ensured, and the technical effect of user application experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a flowchart of an information processing method according to an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a distortion of a projected image projected by a laser projection apparatus according to a first embodiment of the present application;
fig. 3 is a structural diagram of an electronic device according to a second embodiment of the present application;
fig. 4 is a structural diagram of an electronic device in a third embodiment of the present application.
Detailed Description
The embodiment of the invention provides an information processing method and electronic equipment, which are used for solving the technical problem that image distortion is easy to generate when the electronic equipment projects an image to be projected in the prior art.
To solve the foregoing technical problem, an embodiment of the present invention provides an information processing method, and the general idea is as follows:
when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged;
if yes, determining a projection angle correction value corresponding to the pixel point;
and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected.
According to the technical scheme in the embodiment of the application, when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged; if yes, determining a projection angle correction value corresponding to the pixel point; and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so as to carry out correction of the projection angle for each pixel point in the image to be projected. Therefore, when the electronic equipment projects the pixels in the image to be projected to the projection area in sequence at a high frequency in a laser projection mode, the projection angle of each pixel needs to be corrected, and the projection picture projected to the projection area cannot be distorted.
The main implementation principle, the specific implementation mode and the corresponding beneficial effects of the technical scheme of the embodiment of the present application are explained in detail with reference to the accompanying drawings.
Example one
In a specific implementation process, the information processing method may be applied to an electronic device, which may be an electronic device such as a mobile phone, a tablet computer, and a projector provided with a laser projection device, and of course, may also be another electronic device, which is not limited herein. The electronic equipment can project each pixel point in the image to be projected to the projection area in sequence in a laser projection mode to form a projection picture. Because the frequency of the laser projection scanning pixel point is higher, the visual effect that human eyes see the projection picture in the projection area is a complete projection picture.
Referring to fig. 1, an embodiment of the present invention provides an information processing method, including:
s101: when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged;
s102: if yes, determining a projection angle correction value corresponding to the pixel point;
s103: and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected.
Specifically, in this embodiment, the electronic device includes a laser projection device, the laser projection device includes a laser emitter and a reflection unit, and a projection principle of the laser projection device is as follows: the single color laser beam generated by the laser tube in the laser emitter is modulated into three primary colors of red, green and blue after passing through a special crystal or a light guide, then the red, green and blue lasers are mixed, further, the brightness and scanning information of the three primary colors are controlled according to the sequence formed by the pixels in the image to be projected, and then the three primary colors are projected on a screen through a synthesizing device to realize projection.
In the prior art, when a laser projection device projects pixels in an image to be projected, the projection angle of every two adjacent pixels is fixed, so that trapezoidal distortion occurs in a projection picture. In this embodiment, when each pixel point in the image to be projected is projected, it is determined whether the projection angle of the pixel point needs to be corrected, and when it is determined that the projection angle of the pixel point needs to be corrected, a projection angle correction value of the pixel point is determined, the projection angle of the pixel point is determined again according to the projection angle correction value, and the projection is performed according to the determined projection angle.
Through the mode, when the electronic equipment projects the pixels in the image to be projected to the projection area in sequence according to higher frequency in a laser projection mode, the correction of the projection angle can be carried out on each pixel point, and then the projection picture projected to the projection area can not be distorted, so that the technical problem that the image distortion is easily generated when the electronic equipment projects the image to be projected in the prior art can be effectively solved, the reality of the projection picture is ensured, and the technical effect of the application experience of a user is improved.
Further, in the present embodiment, step S101: when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged, and the method can be realized through the following steps:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
Based on the included angle, whether the projection angle of the pixel point needs to be corrected is judged, and the method specifically includes:
judging whether the included angle is larger than a preset angle or not;
and if the included angle is larger than the preset angle, determining that the projection angle of the pixel point needs to be corrected.
Specifically, in this embodiment, an included angle between a plane where a projection lens of the laser projection apparatus is located and a plane where a projection area is located is detected, and if the included angle is smaller than or equal to a preset angle, it indicates that the electronic device is in a flat projection state, a projection picture projected to the projection area by the electronic device is not distorted, or the amount of distortion is small, and a user cannot perceive the distortion, at this time, the electronic device may project each pixel in the image to be projected according to a fixed projection angle, that is: the projection angle between two adjacent pixel points is a fixed angle. If the included angle is greater than the preset angle, it indicates that the electronic device is in an oblique projection state, and a projection picture projected to the projection area by the electronic device will have serious distortion, as shown in fig. 2, the image to be projected is a rectangular image 201, and when the electronic device is in an oblique projection state, the projection picture projected to the projection area is a trapezoidal image 202, and serious distortion occurs. At this time, the projection angle of each pixel point to be projected needs to be corrected, so that the projection picture of the projected projection area can restore the shape of the image to be projected, and the projection effect is ensured.
In the specific implementation process, the preset angle can be set to be 1 degree, 3 degrees, 5 degrees and other angles according to the actual situation, and of course, other angles can also be set. When the included angle between the plane where the projection lens of the laser projection device is located and the plane where the projection area is located is smaller than or equal to the preset angle, the distortion amount of the projection picture projected by the laser projection device is small and is not easy to be perceived by a user. When the included angle between the plane where the projection lens of the laser projection device is located and the plane where the projection area is located is larger than the preset angle, the distortion amount of the projection picture projected by the laser projection device is large, and the projection angle of each pixel needs to be corrected. By the mode, when each pixel is projected, the electronic equipment needs to determine whether the electronic equipment is in a state of projection picture distortion, and then when the electronic equipment is determined to be in the state of projection picture distortion, the projection angle corresponding to each projected pixel is corrected, so that the projection picture can be really restored, the reality of the projection picture is ensured, and the technical effect of user application experience is improved.
Further, in the present embodiment, step S102: determining a projection angle correction value corresponding to the pixel point, wherein the specific implementation process specifically comprises the following steps:
obtaining the position variation of the pixel point in the projection area relative to a reference pixel point when the pixel point is projected at the initial projection angle;
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and determining the projection angle correction amount based on the position variation and the included angle.
Specifically, in this embodiment, the laser projection mode is to sequentially project pixel points of the image to be projected to the projection area one by one at a higher frequency, so as to form a projection picture. During laser projection, the interval of the projection angle between two adjacent pixel points in the same row is a fixed angle, such as: the projection angle of the first pixel point in the first row is A degrees; the projection angle for projecting the second pixel point in the first row is A +5 degrees; the projection angle for projecting the third pixel point in the first row is A +10 degrees. Therefore, the interval of the projection angle between every two adjacent pixel points is fixed. Furthermore, if a plane where the projection area is located and a plane where the projection lens is located have a large included angle, keystone distortion may occur if the pixel points are still projected at fixed angular intervals. When the electronic device projects a certain pixel, it needs to determine a reference pixel, where the reference pixel may be a pixel that is in the same column as the pixel and has been corrected accurately, such as: when correcting the pixel points in the second row and the first column, the pixel points in the first row and the first column are taken as reference pixel points, and when correcting the pixel points in the third row and the first column, the pixel points in the first row and the first column can be taken as reference pixel points, and the corrected pixel points in the second row and the first column can also be taken as reference pixel points. In a specific implementation process, the determined reference pixel point may be set according to actual needs, and the present application is not limited herein.
After the reference pixel point is determined, the electronic equipment calculates and obtains the position variation of the pixel point in the projection area relative to the reference pixel point when the pixel point is projected at the initial projection angle; obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located; and determining the projection angle correction amount based on the position variation and the included angle.
For example, when the second row and the first column of pixels are projected, the first row and the first column of pixels are determined as the reference pixels, the coordinates of the reference pixels are the coordinates of the lower left corner and the first row and the first column of pixels (x11, y11), the abscissa x11 of the reference pixels is d11 tan (a11), and the y11 of the reference pixels is d11 tan (b11), where d11 is the vertical distance between the first row of pixels projected by the laser, a11 is the projection angle in the horizontal direction when the pixels are projected, and b11 is the projection angle perpendicular to the horizontal direction when the pixels are projected, when the projection lens is projected at the initial angle, when the plane where the projection lens is located has an inclined angle 11 with respect to the plane where the projection area is located, that when the projection image has an inclined angle 11, the projection image has a trapezoidal distortion, the first row and the first column of pixels are the reference coordinates unchanged, the vertical distance of the pixels projected when the first row and the second row of the first column of pixels projected image is the horizontal projection angle 11, the first row 11 is the horizontal projection angle 11, the projection angle of the first row 11 a11, when the first row of the projection pixel is the projection pixel 11, the first row of the first row 11, the projection angle is the horizontal projection pixel 11, and the horizontal projection angle of the projection pixel is the projection pixel 11, the first row of the first column of the projection pixel 11 is the projection angle 11, and the first column of the first row 11 is the projection angle of the projection angle 11 a11, and the vertical line 11 is the vertical line 11, and the projection angle of the first column of the projection pixel 11 is the projection angle of the projection pixel 11 a11 is vertical line 11 a11, and the.
Furthermore, the amount of change in the position of the pixel point with respect to the reference pixel point at the initial angle is x21 '-x 21 [ [ tan (β + b21) -1] d21 × (a21) >0 ] in order to perform the trapezoidal correction, it is necessary to change the projection angle from a21 to a 21' so that the abscissa x21 "═ d21 '× tan (a 21') of the pixel point in the second row and the first column when projected at the newly determined angle is determined, it is necessary to ensure x 21" ═ x21, the amount of change in the abscissa x21 "— x21 ═ 0" after the projection angle is newly determined, and further, it is possible to correct the second row in the x direction to be flush with the first row by calculating the newly determined projection angle a21 '═ arctan [ tan (a) 9)/tan (695 (2 + b21) ], and further, it is possible to perform the correction in such a manner that the projection angle of the second row in the x direction is not distorted by the projection angle of a 3653-a 21', a 3628-tan (a) and 367, a correction is not performed by the projection angle of each projection angle.
Further, in the present embodiment, step S103: projecting the pixel point to a projection area according to the redetermined projection angle, wherein the specific implementation process comprises the following steps:
adjusting the reflection angle of a reflection unit to the re-determined projection angle, so that laser light emitted by a laser emitter and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
Specifically, in this embodiment, a laser projection device in the electronic device includes a laser emitter and a reflection unit, a monochromatic laser beam generated by a laser tube in the laser emitter passes through a special crystal or a light guide to be modulated into three primary colors of red, green, and blue, the laser emitter outputs a color-combined laser composed of the three primary colors of red, green, and blue, a controller of the electronic device adjusts and controls brightness and scanning information of the three primary colors of red, green, and blue according to an input image to be projected, and the reflection unit changes a reflection angle according to a projection angle corresponding to each pixel point, so that the mixed color laser output by the laser emitter can scan each pixel point, and simultaneously reflects an image scanned to each pixel point to a projection area. The reflecting unit may be a micro-electromechanical system (MEMS) reflector. When the electronic equipment determines the projection angle again, a control signal is sent to the MEMS reflector, the MEMS reflector responds to the command and then controls the reflection angle of the MEMS reflector to determine the projection angle again for the electronic equipment, and then the laser corresponding to the pixel is projected to the projection area at the determined projection angle after passing through the MEMS reflector.
The reflecting unit in this embodiment is configured as a MEMS reflector, and a micro-electromechanical system (MEMS) refers to a small device with a size of a few centimeters or less, and is a self-contained intelligent system which mainly consists of three major parts, namely a sensor, an actuator and a micro-energy source. Microelectromechanical Systems (MEMS) are mass-produced micro devices or systems that incorporate micro-mechanisms, micro-sensors, micro-actuators, and signal processing and control circuitry, up to interfaces, communications, and power supplies. The MEMS is characterized in that: the MEMS device has small volume, light weight, low energy consumption, small inertia, high resonant frequency and short response time; the mechanical and electrical properties of the MEMS device are excellent; the mass production can be realized, and the production cost is greatly reduced; the integration of multiple sensors or actuators with different functions, different sensitive directions or actuating directions can be integrated into a whole, or a micro sensor array and a micro actuator array are formed, even devices with multiple functions are integrated together to form a complex micro system, and the integration of the micro sensors, the micro actuators and the microelectronic devices can manufacture the MEMS with high reliability and stability. Of course, in the implementation process, the reflecting unit may also be another type of reflector, and the application is not limited herein.
Example two
Referring to fig. 3, an embodiment of the present application further provides an electronic device, including:
the at least one processor 301 is used for judging whether the projection angle of each pixel point needs to be corrected when each pixel point in the image to be projected is projected in sequence through laser projection by obtaining and operating the at least one program module; if yes, determining a projection angle correction value corresponding to the pixel point; based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected;
and the projection lens 302 is connected with the processor and receives a correction instruction of the processor.
Optionally, the at least one processor is further configured to:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
Optionally, the at least one processor is further configured to:
judging whether the included angle is larger than a preset angle or not;
and if the included angle is larger than the preset angle, determining that the projection angle of the pixel point needs to be corrected.
Optionally, the at least one processor is further configured to:
obtaining the position variation of the pixel point in the projection area relative to a reference pixel point when the pixel point is projected at the initial projection angle;
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and determining the projection angle correction amount based on the position variation and the included angle.
Optionally, the at least one processor is further configured to:
controlling a reflection angle of a reflection unit of the electronic equipment to be adjusted to the re-determined projection angle, so that laser light emitted by a laser emitter of the electronic equipment and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
EXAMPLE III
Referring to fig. 4, an embodiment of the present application further provides an electronic device, including:
the first judging unit 401 is configured to judge whether a projection angle of each pixel point in the image to be projected needs to be corrected when each pixel point is projected in sequence through laser projection;
a first determining unit 402, configured to determine a projection angle correction amount corresponding to the pixel point if yes;
the first projection unit 403 is configured to re-determine the projection angle of the pixel point based on the projection angle correction amount, and project the pixel point to the projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected.
Optionally, the first determining unit specifically includes:
the first acquisition module is used for acquiring an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and the first judgment module is used for judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
Optionally, the first determining module specifically includes:
the first judgment submodule is used for judging whether the included angle is larger than a preset angle or not;
and the first determining submodule is used for determining that the projection angle of the pixel point needs to be corrected if the included angle is larger than the preset angle.
Optionally, the first determining unit specifically includes:
the second obtaining module is used for obtaining the position variation of the pixel point in the projection area relative to the reference pixel point when the pixel point is projected at the initial projection angle;
the third acquisition module is used for acquiring an included angle between a plane where the projection lens is located and a plane where the projection area is located;
a first determining module, configured to determine the projection angle correction amount based on the position variation and the included angle.
Optionally, the first projection unit specifically includes:
the first adjusting module is used for adjusting the reflection angle of the reflection unit to the re-determined projection angle, so that the laser light emitted by the laser emitter and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
Through one or more technical solutions in the embodiments of the present application, one or more of the following technical effects can be achieved:
1. according to the technical scheme in the embodiment of the application, when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged; if yes, determining a projection angle correction value corresponding to the pixel point; and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so as to carry out correction of the projection angle for each pixel point in the image to be projected. Therefore, when the electronic equipment projects the pixels in the image to be projected to the projection area in sequence at a high frequency in a laser projection mode, the projection angle of each pixel needs to be corrected, and the projection picture projected to the projection area cannot be distorted.
2. According to the technical scheme in the embodiment of the application, the included angle between the plane where the projection lens is located and the plane where the projection area is located is obtained; and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle. Therefore, when each pixel is projected, the electronic device needs to determine whether the electronic device is in a state of projection image distortion, and then when the electronic device is determined to be in the state of projection image distortion, the projection angle corresponding to each projected pixel is corrected, so that the projection image can be truly restored, therefore, the reality of the projection image is ensured, and the technical effect of user application experience is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Specifically, the computer program instructions corresponding to the information processing method in the embodiment of the present application may be stored on a storage medium such as an optical disc, a hard disc, a usb disk, or the like, and when the computer program instructions corresponding to the information processing method in the storage medium are read or executed by an electronic device, the method includes the following steps:
when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged;
if yes, determining a projection angle correction value corresponding to the pixel point;
and based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected.
Optionally, the step of storing in the storage medium: judging whether a computer program instruction corresponding to the correction of the projection angle of the pixel point is needed or not, and specifically comprising the following steps when the computer program instruction is executed:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
Optionally, the step of storing in the storage medium: based on the included angle, judging whether a computer program instruction corresponding to the correction of the projection angle of the pixel point is needed or not, and specifically comprising the following steps when the computer program instruction is executed:
judging whether the included angle is larger than a preset angle or not;
and if the included angle is larger than the preset angle, determining that the projection angle of the pixel point needs to be corrected.
Optionally, the step of storing in the storage medium: when executed, the computer program instruction for determining the projection angle correction amount corresponding to the pixel point specifically includes the following steps:
obtaining the position variation of the pixel point in the projection area relative to a reference pixel point when the pixel point is projected at the initial projection angle;
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and determining the projection angle correction amount based on the position variation and the included angle.
Optionally, the step of storing in the storage medium: when the computer program instruction corresponding to the projection region for projecting the pixel point according to the redetermined projection angle is executed, the method specifically comprises the following steps:
adjusting the reflection angle of a reflection unit to the re-determined projection angle, so that laser light emitted by a laser emitter and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. An information processing method comprising:
when each pixel point in the image to be projected is projected in sequence through laser projection, whether the projection angle of the pixel point needs to be corrected is judged;
if yes, determining a projection angle correction value corresponding to the pixel point;
based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected;
whether the projection angle of the pixel point needs to be corrected or not is judged, and the method specifically comprises the following steps:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
2. The method according to claim 1, wherein the determining whether the projection angle of the pixel point needs to be corrected based on the included angle specifically includes:
judging whether the included angle is larger than a preset angle or not;
and if the included angle is larger than the preset angle, determining that the projection angle of the pixel point needs to be corrected.
3. The method according to claim 1, wherein the determining the projection angle correction amount corresponding to the pixel point specifically includes:
obtaining the position variation of the pixel point in the projection area relative to a reference pixel point when the pixel point is projected at the initial projection angle;
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and determining the projection angle correction amount based on the position variation and the included angle.
4. The method according to any one of claims 1 to 3, wherein said projecting the pixel point to the projection area according to the re-determined projection angle specifically comprises:
adjusting the reflection angle of a reflection unit to the re-determined projection angle, so that laser light emitted by a laser emitter and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
5. An electronic device, comprising:
the at least one processor is used for judging whether the projection angle of each pixel point needs to be corrected or not when each pixel point in the image to be projected is projected in sequence through laser projection by obtaining and operating the at least one program module; if yes, determining a projection angle correction value corresponding to the pixel point; based on the projection angle correction value, re-determining the projection angle of the pixel point, and projecting the pixel point to a projection area according to the re-determined projection angle, so that the projection angle is corrected for each pixel point in the image to be projected;
the projection lens is connected with the processor and receives a correction instruction of the processor;
the at least one processor is further configured to:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
6. The electronic device of claim 5, wherein the at least one processor is further to:
judging whether the included angle is larger than a preset angle or not;
and if the included angle is larger than the preset angle, determining that the projection angle of the pixel point needs to be corrected.
7. The electronic device of claim 5, wherein the at least one processor is further to:
obtaining the position variation of the pixel point in the projection area relative to a reference pixel point when the pixel point is projected at the initial projection angle;
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and determining the projection angle correction amount based on the position variation and the included angle.
8. The electronic device of any of claims 5-7, wherein the at least one processor is further configured to:
controlling a reflection angle of a reflection unit of the electronic equipment to be adjusted to the re-determined projection angle, so that laser light emitted by a laser emitter of the electronic equipment and corresponding to the pixel is projected to the projection area at the re-determined projection angle after passing through the reflection unit; the reflection unit is used for projecting the laser emitted by the laser emitter to the projection area at different projection angles to form a projection picture.
9. An electronic device, comprising:
the first judgment unit is used for judging whether the projection angle of each pixel point needs to be corrected or not when each pixel point in the image to be projected is projected in sequence through laser projection;
a first determining unit, configured to determine a projection angle correction amount corresponding to the pixel point if yes;
the first projection unit is used for re-determining the projection angle of the pixel point based on the projection angle correction value and projecting the pixel point to a projection area according to the re-determined projection angle so as to correct the projection angle for each pixel point in the image to be projected;
the first judging unit is further configured to:
obtaining an included angle between a plane where the projection lens is located and a plane where the projection area is located;
and judging whether the projection angle of the pixel point needs to be corrected or not based on the included angle.
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| CN103096006B (en) * | 2011-11-02 | 2016-08-03 | 海信集团有限公司 | A kind of projector equipment and projected picture correcting method thereof |
| US9607363B2 (en) * | 2012-06-19 | 2017-03-28 | Ricoh Company, Ltd. | Projector, trapezoidal distortion correction method, and storage medium storing trapezoidal distortion correction program |
| JP6299071B2 (en) * | 2013-03-27 | 2018-03-28 | セイコーエプソン株式会社 | Projector, image correction method and program |
| CN104243879A (en) * | 2013-06-24 | 2014-12-24 | 中兴通讯股份有限公司 | Image correcting method for projection terminal and projection terminal |
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