CN117676107A - Image laser projection method and laser projection device - Google Patents
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Abstract
The application provides an image laser projection method and a laser projection device, the laser projection device includes: the image segmentation module and the parallel laser projection modules are used for carrying out image segmentation; the method comprises the following steps: the image segmentation module segments the image to be projected into a plurality of sub-images and sends the sub-images to the laser projection modules respectively; the laser projection module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected; the laser projection module controls a laser reflection module in the laser projection equipment to perform periodic angular movement according to the number of the pixel points of the sub-image, and controls a laser in the laser projection equipment to be turned on or turned off according to the target gray value corresponding to each pixel point in the sub-image in the process of the periodic angular movement of the laser reflection module. The resolution of laser projection and the projection efficiency are improved.
Description
Technical Field
The application relates to the technical field of laser projection, in particular to an image laser projection method and laser projection equipment.
Background
When the laser projection device is used for carrying out laser projection, each pixel in the image to be projected needs to be subjected to laser projection one by one.
At present, because the distance between adjacent pixels is relatively short, errors exist between the projection position and the laser projection time sequence, interference of the light spots between the adjacent pixels is easy to cause, and the resolution of an image is reduced. And the scanning pixel speed is low when projecting a large-resolution image, so that the laser projection efficiency is affected.
Disclosure of Invention
The present invention is directed to an image laser projection method and a laser projection device, which solve the problems of the prior art that the resolution of image laser projection is reduced and the projection efficiency is low.
In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:
in a first aspect, an embodiment of the present application provides an image laser projection method, applied to a laser projection device, where the laser projection device includes: the image segmentation module and the parallel laser projection modules are used for carrying out image segmentation; the method comprises the following steps:
the image segmentation module segments the image to be projected into a plurality of sub-images and sends the sub-images to the laser projection modules respectively;
The laser projection module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected;
the laser projection module controls a laser reflection module in the laser projection equipment to perform periodic angular movement according to the number of the pixel points of the sub-image, and controls a laser in the laser projection equipment to be turned on or turned off according to a target gray value corresponding to each pixel point in the sub-image in the process of the periodic angular movement of the laser reflection module.
As an optional implementation manner, the image segmentation module segments an image to be projected into a plurality of sub-images, including:
the image segmentation module segments the image to be projected into a plurality of sub-images according to a preset segmentation strategy, and sends the sub-images to the corresponding laser projection modules respectively according to the corresponding relation between the sub-images and the laser projection modules.
As an alternative implementation manner, the laser projection module includes: the device comprises a gray value processing module, a time sequence control module and a laser driving module;
The laser projection module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected, and the method comprises the following steps:
the gray value processing module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected, and sends the target gray value corresponding to each pixel point in the sub-image to the time sequence control module.
As an optional implementation manner, the gray value processing module determines, according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image, and a gray level corresponding to the image to be projected, a target gray value corresponding to each pixel point in the sub-image, including:
the gray value processing module determines a target parameter value according to a difference value between the gray level corresponding to the image to be projected and the gray level corresponding to the sub-image;
the gray value processing module takes the product of the target parameter value and the original gray value corresponding to each pixel point as the target gray value corresponding to each pixel point.
As an optional implementation manner, the laser projection module controls the laser reflection module in the laser projection device to perform periodic angular movement according to the number of pixels of the sub-image, and controls the laser in the laser projection device to be turned on or turned off according to the target gray value corresponding to each pixel in the sub-image in the process of performing the periodic angular movement by the laser reflection module, including:
the time sequence control module periodically sends a reflection control signal to the laser reflection module according to a preset time interval, the number of pixel points in the sub-image and the gray level corresponding to the image to be projected, so that the laser reflection module performs periodic angular movement;
and the time sequence control module determines whether the laser is lightened according to the current period of the laser reflection module and the target gray value corresponding to each pixel point in the process of periodically performing angular movement on the laser reflection module, and if so, sends a laser control signal to the laser driving module so that the laser driving module drives the laser to lighten.
As an optional implementation manner, the timing control module periodically sends a reflection control signal to the laser reflection module according to a preset time interval, the number of pixel points in the sub-image and a gray level corresponding to the image to be projected, so that the laser reflection module performs periodic angular movement, and the method includes:
The time sequence control module determines the periodic movement times according to the gray level corresponding to the image to be projected;
the time sequence control module periodically sends a reflection control signal to the laser reflection module according to the periodical motion times, the preset time interval and the pixel point number in the sub-image, so that the laser reflection module executes the periodical motion of the periodical motion times, and in the period of each periodical motion, the angular motion of the pixel point number times is executed according to the time interval.
As an optional implementation manner, the determining, by the timing control module, whether the laser is turned on according to a current period of the laser reflection module and the target gray value corresponding to each pixel point in the process of performing the periodic angular movement of the laser reflection module includes:
if the laser reflection module is currently located in the ith period of the periodic motion and is located in the jth angular motion in the ith period, the time sequence control module determines whether a target gray value of the jth pixel point in the sub-image is larger than i, if so, the laser is determined to be lighted, wherein i and j are integers larger than or equal to 0.
As an alternative implementation, the width of the laser control signal is less than half of the time interval and the laser control signal is aligned with the center of the time interval.
In a second aspect, embodiments of the present application provide a laser projection device, including: the system comprises an image segmentation module, a plurality of parallel laser projection modules, a laser reflection module and a laser;
the image segmentation module is used for executing the method steps of any one of the first aspect to carry out image segmentation;
each of the laser projection modules is configured to perform the method steps of any one of the first aspect above to control the laser reflection module and the laser to implement laser projection.
As an alternative implementation manner, the laser projection module includes: the device comprises a gray value processing module, a time sequence control module and a laser driving module;
the gray value processing module is used for executing the method steps of the first aspect so as to perform gray value processing;
the time sequence control module is used for executing the method steps of the first aspect to output control signals to the laser driving module and the laser reflecting module;
the laser driving module is used for driving the laser to be turned on or off under the control of the time sequence control module.
The beneficial effects of this application are:
the embodiment of the application provides an image laser projection method and laser projection equipment, wherein an image segmentation module segments an image to be projected into a plurality of sub-images according to the number of parallel laser projection modules preset in the laser projection equipment, and the sub-images are respectively sent to the laser projection modules. And each laser projection module obtains a target gray value corresponding to each pixel point in each sub-image through gray level conversion processing according to the original gray value corresponding to each pixel point in each sub-image, the gray level corresponding to the sub-image and the gray level corresponding to the preset image to be projected. The laser projection module controls the laser reflection module connected with the laser projection module to perform periodic angular movement according to the number of the pixel points in the sub-image, and controls the laser connected with the laser projection module to light or extinguish the laser when the laser reflection module performs periodic angular movement so as to reflect the laser to the position corresponding to each pixel point. The laser projection module determines the on-off state of the laser based on the target gray value corresponding to each pixel point in each sub-image, so that the gray value corresponding to each pixel point reaches the target gray value, the one-to-one projection of each pixel point is realized, in the projection process, the movement of the laser reflection module and the time position of the laser on which the laser is turned on are controlled, the phenomenon of spot interference between each adjacent pixel point is ensured, and the resolution of the image laser projection is improved. And a plurality of parallel laser projection modules respectively project each pixel in each sub-image, so that the efficiency of image laser projection is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a laser projection apparatus according to an embodiment of the present application;
fig. 2 is a schematic flow chart of an image laser projection method according to an embodiment of the present application;
fig. 3 is a schematic flow chart of determining a target gray value corresponding to each pixel point in a sub-image according to the image laser projection method provided in the embodiment of the present application;
fig. 4 is a schematic flow chart of controlling a laser in a laser projection device to turn on or off according to the image laser projection method provided in the embodiment of the present application;
fig. 5 is a schematic flow chart of controlling a laser reflection module to perform periodic angular movement according to the image laser projection method provided in the embodiment of the present application;
fig. 6 is a schematic cycle diagram of a reflection control signal of an image laser projection method according to an embodiment of the present application;
Fig. 7 is a schematic diagram of a reflection control signal and a period of a laser control signal in an image laser projection method according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it should be understood that the accompanying drawings in the present application are only for the purpose of illustration and description, and are not intended to limit the protection scope of the present application. In addition, it should be understood that the schematic drawings are not drawn to scale. A flowchart, as used in this application, illustrates operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be implemented out of order and that steps without logical context may be performed in reverse order or concurrently. Moreover, one or more other operations may be added to the flow diagrams and one or more operations may be removed from the flow diagrams as directed by those skilled in the art.
In addition, the described embodiments are only some, but not all, of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
At present, because the position distance between every two adjacent pixels of an image is relatively close, errors exist between the projection position and the laser projection time sequence, so that the interference of light spots between the adjacent pixels is easy to be caused, and the resolution of the image is reduced when the laser projection device is used for carrying out laser projection on the image to be projected. And the scanning pixel speed is low when projecting the image with large resolution, which affects the laser projection efficiency.
Based on the above-mentioned problems, the present embodiment provides an image laser projection method and a laser projection device, where an image segmentation module in the laser projection device segments an input image to be projected into a plurality of sub-images, and gray value processing is performed on each sub-image by a plurality of parallel laser projection modules in the laser projection device, respectively, and a timing control module in the laser projection module controls a laser reflection module to reflect laser emitted when a laser is turned on according to a target gray value corresponding to each pixel point and the number of pixel points after processing in each sub-image, so as to complete projection of the whole image to be projected. When each pixel point is projected one by one, the time of laser reflected by the laser reflection module and the time of laser lighting are strictly controlled, the phenomenon of light spot interference of adjacent pixel points is avoided, and the resolution of image laser projection is improved. And the parallel multiple laser projection modules project each sub-image respectively, so that the projection efficiency is improved.
Fig. 1 is a schematic structural diagram of a laser projection device according to the present embodiment, as shown in fig. 1, the laser projection device includes: an image splitting module 101, a plurality of laser projection modules 102 in parallel, a laser reflection module 103, and a laser 104. Wherein the laser projection module 102 comprises: a gray value processing module 1021, a timing control module 1022, and a laser driving module 1023.
Referring to fig. 1, the image dividing module 101 is connected to a plurality of parallel laser projection modules 102, and each laser projection module 102 is connected to each laser reflection module 103 and a laser 104. Specifically, the image dividing module 101 is respectively connected to the gray value processing modules 1021 in the parallel multiple laser projection modules 102, the image dividing module 101 performs dividing processing on the image to be projected, and the divided multiple sub-images are respectively sent to the gray value processing modules 1021 in the multiple laser projection modules 102. The gray value processing module 1021 is connected to the timing control module 1022, and the gray value processing module 1021 performs gray value processing on the sub-image to determine a target gray value corresponding to each pixel point in the sub-image, so as to send the target gray value corresponding to each pixel point in the sub-image to the timing control module 1022. The timing control module 1022 is respectively connected to the laser driving module 1023 and the laser reflection module 103, so as to respectively control the laser reflection module 103 to reflect laser light and the laser 104 to turn on or off the laser light according to the target gray scale value corresponding to each pixel point in the sub-image.
Fig. 2 is a schematic flow chart of an image laser projection method according to an embodiment of the present application, where an execution subject of the method is a laser projection device, and the laser projection device includes: the image segmentation module and the parallel laser projection modules. As shown in fig. 2, the method includes:
s201, the image segmentation module segments the image to be projected into a plurality of sub-images, and each sub-image is respectively sent to each laser projection module.
Alternatively, the image dividing module 101 receives an image to be projected, divides the image to be projected into a plurality of sub-images equal to the number of the laser projection modules 102 according to the number of parallel laser projection modules 102 preset in the laser projection device, and sends the plurality of sub-images to each laser projection module 102 connected with the image dividing module 101, wherein each laser projection module 102 projects each pixel point in each sub-image.
For example, if 4 parallel laser projection modules 102 are preset in the laser projection device, the image segmentation module 101 segments the received image to be projected into 4 sub-images, and sends the first sub-image, the second sub-image, the third sub-image, and the fourth sub-image to the first laser projection module 102, the second laser projection module 102, the third laser projection module 102, and the fourth laser projection module 102, respectively. The image dividing module 101 is respectively connected with 4 parallel laser projection modules 102.
S202, the laser projection module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected.
Optionally, the gray value and the gray level are used to describe the gray of the image, the gray value refers to the brightness value of each pixel point in the image, the brightness value indicates the number of times that the laser light is reflected to the corresponding position of the pixel point, the larger the gray value indicates the number of times that the laser light is reflected to the corresponding position of the pixel point, the higher the brightness of the pixel point, the smaller the gray value indicates the number of times that the laser light is reflected to the corresponding position of the pixel point, and the lower the brightness of the pixel point. The grey levels are represented in levels or segments, e.g. 8-bit grey levels represent a grey value in the image divided into 2 8 That is, 256 levels are represented by gray values of 0 to 255, black is represented by gray values of 0, the number of times the laser light is reflected to the corresponding position of the pixel is 0, white is represented by gray values of 255, the number of times the laser light is reflected to the corresponding position of the pixel is 255, and 0 to 255 are represented by 8-bit binary numbers. For another example, a 6-bit gray scale indicates that the gray value in the image is divided into 2 6 Namely 64 levels, the levels are represented by gray values of 0-63, black is represented by gray values of 0, the number of times of laser reflection to the corresponding position of the pixel point is 0, white is represented by gray values of 63, the number of times of laser reflection to the corresponding position of the pixel point is 63, and 0-63 are represented by 6-bit binary numbers. The higher the corresponding gray level of the image, the wider the displayable gray range of the image, and the higher the definition of the image and the contrast of the bright and dark details.
When the laser projection equipment receives an image to be projected, the original gray level value and the corresponding original gray level of each pixel point in the image to be projected are automatically identifieda. Each sub-image after segmentation comprisesPixels, original gray value of each pixel in each sub-image +.>The gray level corresponding to the sub-image is the same as the original gray level of each corresponding pixel point in the image to be projected, and the gray level corresponding to the sub-image is the original gray level corresponding to the image to be projected before segmentationaThe same applies.
After each laser projection module 102 receives each sub-image sent by the image dividing module 101, each sub-image is identifiedGray values corresponding to the individual pixels are taken as +.>Original gray value corresponding to each pixel point +.>And recognizes the gray level corresponding to the sub-imagea。
The user can preset proper gray level as the gray level corresponding to the image to be projected according to the projection display requirement and the performance of the laser projection device bThe display effect of the contrast of the brightness of the projected image to be projected is better. Wherein, the gray level corresponding to the image to be projected is presetbSo that after projectionbBit gray scale represents gray value division in an imageLevels, which are gray values +.>Representation, wherein black is represented when the gray value is 0, gray value is +.>The time indicates white, and the number +.>All are usedbA binary number of bits.
The laser projection module 102 receives a gray level corresponding to an image to be projected preset by a userbAnd according to the sub-imagesOriginal gray value corresponding to each pixel point +.>Gray level corresponding to sub-imageaAnd the corresponding grey level of the image to be projected, determining +.>Target gray value corresponding to each pixel point +.>. I.e. +.>Each pixel point carries out conversion processing of gray level, and corresponding gray level in the sub-image is converted fromaConversion to the corresponding grey level of the image to be projectedbThereafter, in the sub-imagemGray value corresponding to each pixel point is taken as target gray value +.>And calculates the target gray value +.>。
S203, the laser projection module controls the laser reflection module in the laser projection equipment to perform periodic angular movement according to the number of the pixels of the sub-image, and controls the laser in the laser projection equipment to be turned on or turned off according to the target gray value corresponding to each pixel in the sub-image in the process of the periodic angular movement of the laser reflection module.
Optionally, with continued reference to fig. 1, the laser projection device further includes a plurality of laser reflection modules 103 and lasers 104, and the number of laser reflection modules 103 and lasers 104 is the same as the number of laser projection modules 102 set in advance. And each laser projection module 102 is connected to one laser reflection module 103 and one laser 104, respectively. The laser reflection module 103 may be a Micro-Electro-mechanical system (MEMS) mirror, which is used as a Micro mirror for laser deflection, and reflects laser light to different angles through the deflection motion of the MEMS mirror.
The laser projection module 102 receives the number of pixels in the sub-imageThe laser reflection module 103 connected with the laser projection module 102 is controlled to perform periodic angular movement, and the laser 104 connected with the laser projection module 102 is controlled to light or extinguish the laser when the laser reflection module 103 performs periodic angular movement so as to reflect the laser to +.>And the positions corresponding to the pixel points. And the laser projection module 102 is based on the sub-imagesmTarget gray value corresponding to each pixel point +.>The on or off of the laser is determined, so that the gray value corresponding to each pixel point reaches the target gray value in the foregoing embodiment, the one-to-one projection of each pixel point is realized, and the movement of the laser reflection module 103 and the time position of the laser 104 for igniting the laser are strictly controlled in the projection process.
In this embodiment, the image dividing module divides the image to be projected into a plurality of sub-images according to the number of parallel laser projection modules preset in the laser projection device, and sends the plurality of sub-images to each laser projection module respectively. And each laser projection module obtains a target gray value corresponding to each pixel point in each sub-image through gray level conversion processing according to the original gray value corresponding to each pixel point in each sub-image, the gray level corresponding to the sub-image and the gray level corresponding to the preset image to be projected. The laser projection module controls the laser reflection module connected with the laser projection module to perform periodic angular movement according to the number of the pixel points in the sub-image, and controls the laser connected with the laser projection module to light or extinguish the laser when the laser reflection module performs periodic angular movement so as to reflect the laser to the position corresponding to each pixel point. The laser projection module determines the on-off state of the laser based on the target gray value corresponding to each pixel point in each sub-image, so that the gray value corresponding to each pixel point reaches the target gray value, the one-to-one projection of each pixel point is realized, in the projection process, the movement of the laser reflection module and the time position of the laser on which the laser is turned on are controlled, the phenomenon of spot interference between each adjacent pixel point is ensured, and the resolution of the image laser projection is improved. And a plurality of parallel laser projection modules respectively project each pixel in each sub-image, so that the efficiency of image laser projection is improved.
As an optional implementation manner, the step of dividing the image to be projected into a plurality of sub-images by the image dividing module in the step S201 includes:
the image segmentation module segments the image to be projected into a plurality of sub-images according to a preset segmentation strategy, and sends the sub-images to the corresponding laser projection modules respectively according to the corresponding relation between the sub-images and the laser projection modules.
Optionally, the image segmentation module 101 receives a preset segmentation policy, for example, a policy that an image to be projected is segmented into sub-images with the same number as the number of the laser projection modules 102 according to the average number of rows or columns, and performs a segmentation process on the image to be projected. Each sub-image has a unique correspondence with each laser projection module 102 in the laser projection device, and the image dividing module 101 sends each sub-image to each laser projection module 102 corresponding to each sub-image according to the correspondence.
For example, if 8 laser projection modules are arranged in the laser projection device in advance, to achieve fast projection of the 720P image to be projected, where the 720P image to be projected includes 1280×720= 921600 pixels. The preset division policy may be that the 720P image to be projected is divided into 8 sub-images according to the average number of lines, and the image division module 101 divides the 720P image to be projected into a first sub-image of 1-90 lines, a second sub-image of 91-180 lines, a third sub-image of 181-270 lines, a fourth sub-image of 271-360 lines, a fifth sub-image of 361-450 lines, a sixth sub-image of 451-540 lines, a seventh sub-image of 541-630 lines, and an eighth sub-image of 631-720 lines according to the division policy. And according to the correspondence between 8 sub-images and 8 laser projection modules 102, a first sub-image of 1-90 rows is sent to the first laser projection module 102, a second sub-image of 91-180 rows is sent to the second laser projection module 102, and so on, an eighth sub-image of 631-720 rows is sent to the eighth laser projection module 102. The 8 sub-images each include 1280×90=115200 pixels, and the 8 laser projection modules 102 respectively perform laser projection on the 115200 pixels in the 8 sub-images one by one to complete the projection of the 8 sub-images, so as to obtain the projected whole image.
In this embodiment, the image segmentation module performs segmentation processing on an image to be projected according to a preset segmentation strategy, averagely segments the image to be projected into a plurality of sub-images with the same number as the laser projection modules, and sends each sub-image to each laser projection module corresponding to each sub-image according to a unique correspondence between each sub-image and each laser projection module in the laser projection device, so that each laser projection module projects all pixels in each sub-image one by one, and a complete image after projection is obtained. The image segmentation module performs segmentation processing on the image to be projected, so that each parallel laser projection module performs parallel projection processing on each segmented sub-image, and the laser projection efficiency is improved.
As an alternative embodiment, the laser projection module includes: the device comprises a gray value processing module, a time sequence control module and a laser driving module.
The step S202 of determining, by the laser projection module, the target gray value corresponding to each pixel point in the sub-image according to the original gray value corresponding to each pixel point in the sub-image, the gray level corresponding to the sub-image, and the gray level corresponding to the image to be projected, includes:
The gray value processing module determines a target gray value corresponding to each pixel point in the sub-image according to the original gray value corresponding to each pixel point in the sub-image, the gray level corresponding to the sub-image and the gray level corresponding to the image to be projected, and sends the target gray value corresponding to each pixel point in the sub-image to the time sequence control module.
Optionally, with continued reference to fig. 1, the laser projection module 102 includes a gray value processing module 1021, a timing control module 1022, and a laser driving module 1023, where the gray value processing module 1021 is communicatively connected to the timing control module 1022.
The gray value processing module 1021 in the laser projection module 102 is connected to the image segmentation module 101, and is configured to receive the sub-image sent by the image segmentation module 101, where the gray value processing module 1021 identifies the sub-imageOriginal gray value corresponding to each pixel point +.>Gray level corresponding to sub-imagea. The gray value processing module 1021 also receives a gray level corresponding to the image to be projected preset by the userbPerforming gray level conversion processing on the sub-image, and calculating gray level of the sub-imageaConversion tobIn the post-sub-image +.>Target gray value corresponding to each pixel point +.>. The gray value processing module 1021 adds +_in the scaled sub-image >Target gray value corresponding to each pixel point +.>To the timing control module 1022 connected to the gray value processing module 1021, so that the timing control module 1022 can control the gray value according to the gray value>Target gray value corresponding to each pixel point +.>The laser in the laser projection device is controlled to be turned on or off.
Illustratively, if the gray value processing module in the first home laser projection module 102 identifies the first sub-image of lines 1-90The original gray value corresponding to each pixel point is +.>The gray level corresponding to the first sub-image is 6, the gray level corresponding to the image to be projected preset by a user is received to be 8, the gray level conversion processing is carried out by the gray level processing module, and after the gray level corresponding to the first sub-image is calculated to be changed from 6 to 8, the gray level corresponding to the first sub-image is more than 8 in the first sub-image>Target gray value of individual pixel dot +.>And the target gray value +.>To the timing control module 1022.
In this embodiment, a gray value processing module in the laser projection module is connected to the timing control module. The gray level processing module identifies an original gray level corresponding to each pixel point in the sub-image and a gray level corresponding to the sub-image, receives a preset gray level corresponding to the image to be projected, calculates a target gray level corresponding to each pixel point in the sub-image through gray level conversion processing, and sends the target gray level corresponding to each pixel point in the sub-image to the time sequence control module. The gray level conversion processing is carried out on the sub-images through the gray value processing module, so that the projection effect of the images to be projected is improved, and the contrast effect of the images to be projected after laser projection is better. The gray value processing module sends the target gray value corresponding to each pixel point in the sub-image after gray level conversion to the time sequence control module, so that the time sequence control module controls the on or off of the laser to realize the laser projection of each pixel point in the sub-image.
The following describes in detail the process of determining the target gray value corresponding to each pixel point in the sub-image by the gray value processing module according to the original gray value corresponding to each pixel point in the sub-image, the gray level corresponding to the sub-image and the gray level corresponding to the image to be projected.
Fig. 3 is a schematic flow chart of determining a target gray value corresponding to each pixel point in a sub-image according to the image laser projection method provided in the embodiment of the present application, as shown in fig. 3, the step of determining, by the gray value processing module, the target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image, and a gray level corresponding to an image to be projected, where the method includes:
s301, a gray value processing module determines a target parameter value according to a difference value between a gray level corresponding to an image to be projected and a gray level corresponding to a sub-image.
Alternatively, the gray value of each pixel is represented by binary digits, so that the gray value corresponding to each pixel is represented by an exponential power of 2, and when the gray level is converted, the gray level processing module 1021 calculates the gray level corresponding to the image to be projectedbGray scale corresponding to sub-imageaIs the difference of (2) b-aTaking the difference as an index in an exponential function based on 2, then the target parameter value
For example, if the gray level corresponding to the first sub-image of 1-90 rows is 6 and the gray level corresponding to the image to be projected preset by the user is 8, the maximum gray value corresponding to each pixel point in the first sub-image isI.e. 64. When converting the corresponding gray level of the first sub-image from 6 to 8, the target parameter value +.>。
S302, the gray value processing module takes the product of the target parameter value and the original gray value corresponding to each pixel point as the target gray value corresponding to each pixel point.
Optionally, the gray value processing module 1021 processes the target parameter valueAs a scaling factor for gray level conversion, the original gray values corresponding to m pixels +.>And target gray values +.>The relation between them can be expressed asBy calculating the target parameter value +.>Original gray value corresponding to m pixel pointsObtaining the target gray value corresponding to m pixel points>. Wherein the target parameter value->。
For example, when the first sub-image of 1-90 lines is projected, the gray value processing module 1021 in the first laser projection module 102 calculates the target gray value corresponding to 115000 pixels in the first sub-image to be 4 times of the original gray value corresponding to each pixel according to the original gray value corresponding to 115000 pixels in the identified first sub-image and the target parameter value 4. Similarly, the gray-scale conversion module 1021 in the remaining seven laser projection modules 102 processes the gray-scale conversion in parallel to obtain target gray-scale values corresponding to 115200 pixels in the remaining seven sub-images.
In this embodiment, the gray value processing module in the laser projection module calculates the difference between the gray level corresponding to the image to be projected and the gray level corresponding to the sub-image as an index in an exponential function based on 2, to obtain the target parameter value. And then calculating the product of the target parameter value and the original gray value corresponding to each pixel point to obtain the target gray value corresponding to each pixel point. Through parallel gray value conversion processing, the display effect and the projection efficiency of image projection are improved.
The process of controlling the laser reflection module in the laser projection device to perform periodic angular movement by the laser projection module according to the number of pixels in the sub-image, and controlling the laser in the laser projection device to be turned on or turned off according to the target gray value corresponding to each pixel in the sub-image in the process of performing the periodic angular movement by the laser reflection module is described in detail below.
Fig. 4 is a schematic diagram of a flow chart for controlling a laser in a laser projection device to turn on or off according to the image laser projection method provided in the embodiment of the present application, as shown in fig. 4, in the step S203, a laser projection module controls a laser reflection module in the laser projection device to perform periodic angular movement according to the number of pixels in a sub-image, and controls the laser in the laser projection device to turn on or off according to a target gray value corresponding to each pixel in the sub-image in the process of performing the periodic angular movement by the laser reflection module, where the flow chart includes:
S401, the time sequence control module periodically sends a reflection control signal to the laser reflection module according to a preset time interval, the number of pixel points in the sub-image and the gray level corresponding to the image to be projected, so that the laser reflection module performs periodic angle movement.
Optionally, with continued reference to fig. 1, the timing control module 1022 in the laser projection module 102 is connected to the gray value processing module 1021 and the laser reflection module 103, respectively.
The timing control module 1022 receives the sub-image after gray-scale conversion sent by the gray-scale processing module 1021, and under the drive of the high-frequency clock, the sub-image is processed according to the sub-imageNumber of pixels in an imageGray level corresponding to image to be projected preset by userbAnd a user-preset time interval +.>Generates a reflection control signal and transmits the reflection control signal to the laser reflection module 103 connected to the timing control module 1022, and the laser reflection module 103 is further connected to the laser 104 such that the laser reflection module 103 is at regular time intervals +.>The periodic angular movement is performed, and the laser light lighted by the laser 104 is reflected to the corresponding position of each pixel point one by one through the angular deflection.
S402, the time sequence control module determines whether the laser is lightened according to the current period of the laser reflection module and the target gray value corresponding to each pixel point in the process of periodically performing angular movement on the laser reflection module, and if yes, a laser control signal is sent to the laser driving module so that the laser driving module drives the laser to lighten.
Optionally, with continued reference to fig. 1, the timing control module 1022 is further connected to a laser driving module 1023, and the laser driving module 1023 is connected to the laser 104 in the laser projection device. When each pixel point is projected one by one, the timing control module 1022 firstly sends out a reflection control signal to control the laser reflection module 103 to perform periodic angular movement under the drive of the high-frequency clock, so that the laser reflection module 103 deflects to the position corresponding to the pixel point. And then according to the current period of the laser reflection module 103 and the target gray value corresponding to each pixel pointWhether the laser needs to be lightened is judged, if yes, the time sequence control module 1022 generates a laser control signal and sends the laser control signal to the laser driving module 1023 connected with the time sequence control module 1022. High speed internal to laser drive module 1023The switching circuit drives the laser 104 to light laser according to the laser control signal, and at this time, the laser reflection module 103 reflects the laser light lighted by the laser 104 to a position corresponding to the pixel point, so as to complete the projection of the pixel point.
In this embodiment, the timing control module generates the reflection control signal according to the number of pixel points in the sub-image after the received gray level conversion process, the preset time interval, and the gray level corresponding to the preset image to be projected, and sends the reflection control signal to the laser reflection module, so that the laser reflection module performs the periodic angular motion at the fixed time interval. When each pixel point is projected one by one, the time sequence control module firstly sends out a reflection control signal to control the laser reflection module to perform periodical angular movement, so that after the laser reflection module is deflected to a position corresponding to the pixel point, whether laser needs to be lightened or not is judged according to the current period of the laser reflection module and the target gray value corresponding to each pixel point, if so, a laser control signal is generated and sent to the laser driving module, and the laser driving module drives the laser to lighten the laser according to the laser control signal. The laser reflection module reflects the laser light lighted by the laser to the position corresponding to the pixel point to finish the projection of the pixel point. The laser reflection module deflects laser to the position corresponding to each pixel point and then reflects the laser, so that the laser lighted by the laser is ensured to be accurately reflected to the position corresponding to each pixel point, the facula interference phenomenon caused by errors between the projection positions of adjacent pixel points and the laser lighting time is avoided, and the image laser projection effect is improved.
The process of periodically performing angular movement by the laser reflection module is described in detail by periodically sending a reflection control signal to the laser reflection module by the timing control module according to a preset time interval, the number of pixel points in the sub-image and the gray level corresponding to the image to be projected.
Fig. 5 is a schematic flow chart of controlling a laser reflection module to perform periodic angular movement according to the image laser projection method provided in the embodiment of the present application, as shown in fig. 5, in the step S401, a timing control module periodically sends a reflection control signal to the laser reflection module according to a preset time interval, the number of pixels in a sub-image, and a gray level corresponding to an image to be projected, so that the step of enabling the laser reflection module to perform periodic angular movement includes:
s501, the time sequence control module determines the periodic movement times according to the gray level corresponding to the image to be projected.
Optionally, when each pixel point in the sub-image is projected one by one, the laser reflection module 103 sequentially performs laser reflection from the first pixel point to the last pixel point in the sub-image, so that the gray value corresponding to each pixel point reaches the target gray value, the gray value corresponding to each pixel point represents the brightness of the pixel point, and is the number of times that the laser is reflected to the corresponding position of the pixel point, so that the number of times that the laser reflection module 103 performs periodic motion depends on the target gray value of each pixel point. Since the gray value of each pixel point is represented by a binary number, the number of periodic movements performed by the laser reflection module 103 corresponds to the gray level of the image to be projected bRelated to the following.
The timing control module 1022 controls the gray level corresponding to the image to be projected according to the user preset gray levelbThe number of periodic movements is determined. Specifically, when the user presets the gray level corresponding to the image to be projected asbThe number of times the laser reflection module 103 needs to perform periodic movement is. For example, the first sub-image of the foregoing 0-90 lines is subjected to laser projection, and if the gray level corresponding to the image to be projected preset by the user is 8, the number of times the laser reflection module 103 needs to perform the periodic motion isAnd twice.
S502, the time sequence control module periodically sends a reflection control signal to the laser reflection module according to the periodic movement times, the preset time interval and the number of pixel points in the sub-image, so that the laser reflection module executes the periodic movement of the periodic movement times, and in each period of the periodic movement, the time sequence control module executes the angular movement of the number of the pixel points according to the time interval.
Optionally, the timing control module 1022 is driven by the high-frequency clock according to the number of periodic movementsThe preset time interval istThe number of pixel points in the sub-image ismA reflection control signal is generated and sent to the laser reflection module 103 connected to the timing control module 1022. Fig. 6 is a schematic periodic diagram of a reflection control signal of the image laser projection method according to the embodiment of the present application, as shown in fig. 6, a periodic time interval of the reflection control signal generated by the timing control module 1022 is a preset time interval t. The laser reflection module 103 receives the reflection control signal and controls the reflection control signal at fixed time intervalstGo->A plurality of periodic movements, each period having a predetermined angle of the laser reflection module 103mAnd the secondary angle deflection motion is performed so as to deflect to the corresponding position of each pixel point under the angle deflection motion.
For example, the laser projection is performed on the first sub-image of the foregoing 0-90 rows, and when the preset time interval is 100 ns and the preset gray level corresponding to the image to be projected is 8, the timing control module 1022 generates a periodic motion that controls the laser reflection module 103 to perform 128 times at a fixed time interval of 100 ns, and the laser reflection module 103 performs 115200 angular deflection motions in each period, that is, deflects to positions corresponding to 115200 pixel points.
In this embodiment, the timing control module obtains the periodic movement times of the laser reflection module according to the gray level corresponding to the image to be projected preset by the user. And generating a reflection control signal according to the periodical motion times, the preset time interval and the number of pixel points in the sub-image, and sending the reflection control signal to a laser reflection module connected with the time sequence control module. The laser reflection module performs periodic movement with the number of periodic movement at fixed time intervals under the control of the reflection control signal, and performs angle deflection movement with the preset angle and the same number of pixel points in each period, and deflects to the position corresponding to each pixel point.
As an optional implementation manner, in the step S402, the step of determining, by the timing control module, whether the laser is turned on according to the current period of the laser reflection module and the target gray value corresponding to each pixel point in the process that the laser reflection module performs the periodic angular motion includes:
if the laser reflection module is currently in the ith period of the periodic motion and in the jth angular motion in the ith period, the time sequence control module determines whether the target gray value of the jth pixel point in the sub-image is larger than i, and if so, determines that the laser is lightened, wherein i and j are integers larger than or equal to 0.
Optionally, the timing control module 1022 determines whether the laser reflection module 103 needs to be turned on to reach the target gray value corresponding to each pixel when the laser reflection module 103 deflects to the position corresponding to each pixel according to the current period of the laser reflection module 103 and the target gray value corresponding to each pixel. Specifically, if the laser reflection module is currently in the ith period of the periodic motion and the jth angular motion is in the ith period, i.e. the laser reflection module is ith deflected to the jth pixel point in the image, comparing the target gray value of the pixel point in the sub-image at the moment The relation of the size of i, if +.>i represents that the number of times the position corresponding to the jth pixel point in the image is reflected by the laser is smaller than the target gray value + ->The corresponding number of laser reflections requires the laser 104 to be turned on, and the laser reflection module 103 reflects the laser lightTo the position corresponding to the j-th pixel point so as to achieve the target gray value corresponding to the pixel point in the follow-up process>. If->i indicates that the number of times the position corresponding to the jth pixel point in the image is reflected by the laser reaches the target gray value +.>The corresponding number of laser reflections, at which time the laser 104 extinguishes the laser, the corresponding location of the pixel cannot be illuminated by the laser.
In this embodiment, the timing control module determines whether to send a laser control signal to the laser driving module to drive the laser to light when the laser reflection module is currently in the ith period of the periodic motion and is in the jth angular motion in the ith period, where the relationship between the target gray value of the jth pixel point in the sub-image and the number of periods i is determined. If the target gray value of the jth pixel point is greater than i, the number of times that the position corresponding to the jth pixel point is reflected by the laser is smaller than the number of times that the position corresponding to the target gray value is reflected by the laser, and a laser control signal needs to be sent to the laser driving module to drive the laser to light the laser. The correct display of the light and dark contrast ratio of each pixel point in the image projection is ensured, and the projection of each pixel point in the image is realized.
As an alternative embodiment, the width of the laser control signal is less than half of the time interval and the laser control signal is aligned with the center of the time interval.
Optionally, in order to ensure that the laser reflection module 103 accurately reflects the laser light emitted by the laser 104 onto the position corresponding to each pixel, the time of the deflection angle movement of the laser reflection module 103 and the time of the laser light emitted by the laser 104 need to be strictly controlled, and the width of the laser control signal is set to be smaller than a preset time intervalHalf of (1), and is excited byCenter and time interval of the optical control signal>Is aligned with the center of the lens.
For example, if the time interval preset by the user is 100 ns, the width of the laser control signal is set to be less than 50 ns, and the center of the laser control signal is aligned with the center of the time interval of 100 ns, that is, 45-55 ns of the 100 ns of the movement of the laser reflection module 103, the timing control module 1022 sends the laser control signal to the laser driving module 1023 to control the laser 104 to light.
FIG. 7 is a schematic diagram of a reflection control signal and a period of a laser control signal of an image laser projection method according to an embodiment of the present application, where the width of the laser control signal is less than half of the time interval as shown in FIG. 7 And laser control signal and time intervaltIs aligned with the center of the lens.
In this embodiment, the time center of the laser control signal sent to the laser driving module by the timing control module is aligned with the center of the preset time interval, and the width of the laser control signal is smaller than half of the time interval, so that the laser reflection module is ensured to accurately reflect the laser lightened by the laser to the position corresponding to each pixel point, the phenomenon of facula interference is avoided, and the resolution of image projection is improved.
The embodiment of the application further provides a laser projection device, and fig. 1 is a schematic structural diagram of the laser projection device provided in the embodiment of the application, as shown in fig. 1, the laser projection device includes an image segmentation module 101, a plurality of parallel laser projection modules 102, a laser reflection module 103, and a laser 104.
The image segmentation module 101 is configured to perform the method steps of the previous embodiments for image segmentation.
Each laser projection module 102 is configured to perform the method steps in the foregoing embodiments to control the laser reflection module 103 and the laser 104 to implement laser projection.
As an alternative embodiment, with continued reference to fig. 1, the laser projection module 102 includes: a gray value processing module 1021, a timing control module 1022, and a laser driving module 1023.
The gray value processing module 1021 is configured to perform the steps of the method in the foregoing embodiments to perform gray value processing.
The timing control module 1022 is used to perform the method steps in the foregoing embodiments to output control signals to the laser driving module 1023 and the laser reflection module 103.
The laser driving module 1023 is used to drive the laser 104 to be turned on or off under the control of the timing control module 1022.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system and apparatus may refer to corresponding procedures in the method embodiments, which are not described in detail in this application. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, and the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, and for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, indirect coupling or communication connection of devices or modules, electrical, mechanical, or other form.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are covered in the protection scope of the present application.
Claims (10)
1. An image laser projection method, characterized by being applied to a laser projection apparatus, the laser projection apparatus comprising: the image segmentation module and the parallel laser projection modules are used for carrying out image segmentation; the method comprises the following steps:
the image segmentation module segments the image to be projected into a plurality of sub-images and sends the sub-images to the laser projection modules respectively;
the laser projection module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected;
the laser projection module controls a laser reflection module in the laser projection equipment to perform periodic angular movement according to the number of the pixel points of the sub-image, and controls a laser in the laser projection equipment to be turned on or turned off according to a target gray value corresponding to each pixel point in the sub-image in the process of the periodic angular movement of the laser reflection module.
2. The method of claim 1, wherein the image segmentation module segments the image to be projected into a plurality of sub-images, comprising:
The image segmentation module segments the image to be projected into a plurality of sub-images according to a preset segmentation strategy, and sends the sub-images to the corresponding laser projection modules respectively according to the corresponding relation between the sub-images and the laser projection modules.
3. The method of claim 1, wherein the laser projection module comprises: the device comprises a gray value processing module, a time sequence control module and a laser driving module;
the laser projection module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected, and the method comprises the following steps:
the gray value processing module determines a target gray value corresponding to each pixel point in the sub-image according to an original gray value corresponding to each pixel point in the sub-image, a gray level corresponding to the sub-image and a gray level corresponding to the image to be projected, and sends the target gray value corresponding to each pixel point in the sub-image to the time sequence control module.
4. A method according to claim 3, wherein the gray value processing module determines the target gray value corresponding to each pixel in the sub-image according to the original gray value corresponding to each pixel in the sub-image, the gray level corresponding to the sub-image, and the gray level corresponding to the image to be projected, and includes:
The gray value processing module determines a target parameter value according to a difference value between the gray level corresponding to the image to be projected and the gray level corresponding to the sub-image;
the gray value processing module takes the product of the target parameter value and the original gray value corresponding to each pixel point as the target gray value corresponding to each pixel point.
5. The method of claim 3, wherein the laser projection module controls a laser reflection module in the laser projection device to perform periodic angular movement according to the number of pixels in the sub-image, and controls a laser in the laser projection device to be turned on or off according to a target gray value corresponding to each pixel in the sub-image during the periodic angular movement of the laser reflection module, including:
the time sequence control module periodically sends a reflection control signal to the laser reflection module according to a preset time interval, the number of pixel points in the sub-image and the gray level corresponding to the image to be projected, so that the laser reflection module performs periodic angular movement;
and the time sequence control module determines whether the laser is lightened according to the current period of the laser reflection module and the target gray value corresponding to each pixel point in the process of periodically performing angular movement on the laser reflection module, and if so, sends a laser control signal to the laser driving module so that the laser driving module drives the laser to lighten.
6. The method of claim 5, wherein the timing control module periodically sends a reflection control signal to the laser reflection module according to a preset time interval, the number of pixels in the sub-image, and a gray level corresponding to the image to be projected, so that the laser reflection module performs periodic angular movement, and the method comprises:
the time sequence control module determines the periodic movement times according to the gray level corresponding to the image to be projected;
the time sequence control module periodically sends a reflection control signal to the laser reflection module according to the periodical motion times, the preset time interval and the pixel point number in the sub-image, so that the laser reflection module executes the periodical motion of the periodical motion times, and in the period of each periodical motion, the angular motion of the pixel point number times is executed according to the time interval.
7. The method of claim 6, wherein the determining, by the timing control module, whether the laser is turned on or not according to a current period of the laser reflection module and the target gray value corresponding to each pixel point during the periodic angular movement of the laser reflection module includes:
If the laser reflection module is currently located in the ith period of the periodic motion and is located in the jth angular motion in the ith period, the time sequence control module determines whether a target gray value of the jth pixel point in the sub-image is larger than i, if so, the laser is determined to be lighted, wherein i and j are integers larger than or equal to 0.
8. The method of claim 5, wherein the laser control signal has a width less than half of the time interval and is aligned with a center of the time interval.
9. A laser projection device, the laser projection device comprising: the system comprises an image segmentation module, a plurality of parallel laser projection modules, a laser reflection module and a laser;
the image segmentation module is configured to perform the method steps of any one of claims 1-8 for image segmentation;
each of the laser projection modules is adapted to perform the method steps of any of claims 1-8 to control the laser reflection module and the laser to effect laser projection.
10. The apparatus of claim 9, wherein the laser projection module comprises: the device comprises a gray value processing module, a time sequence control module and a laser driving module;
The grey value processing module is used for executing the steps of the method of any one of claims 3 to 8 to perform grey value processing;
the timing control module is configured to perform the method steps of any one of claims 3-8 to output control signals to the laser driving module and the laser reflection module;
the laser driving module is used for driving the laser to be turned on or off under the control of the time sequence control module.
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Citations (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03172831A (en) * | 1989-12-01 | 1991-07-26 | Nippon Telegr & Teleph Corp <Ntt> | Projection type display device |
| JPH09116832A (en) * | 1995-10-17 | 1997-05-02 | Matsushita Joho Syst Kk | Image adjustment device |
| US20060071936A1 (en) * | 2002-11-27 | 2006-04-06 | Evgeniy Leyvi | Method of improving the perceptual contrast of displayed images |
| CN1913603A (en) * | 2005-08-10 | 2007-02-14 | 精工爱普生株式会社 | Image display apparatus and image adjusting method |
| CN1920907A (en) * | 2005-08-24 | 2007-02-28 | 精工爱普生株式会社 | Image display apparatus and control method for the same |
| US20070091118A1 (en) * | 2005-10-26 | 2007-04-26 | Allen William J | Image display system and method |
| KR20070054875A (en) * | 2005-11-24 | 2007-05-30 | 엘지전자 주식회사 | Image display apparatus and method |
| JP2007212946A (en) * | 2006-02-13 | 2007-08-23 | Casio Comput Co Ltd | Projector, projection method, and program |
| CN101151886A (en) * | 2005-03-29 | 2008-03-26 | 松下电器产业株式会社 | Image display and image displaying method |
| CN101795374A (en) * | 2009-11-23 | 2010-08-04 | 清投视讯(北京)科技有限公司 | Method and system for image display of true seamless projection type large screen |
| JP2010204673A (en) * | 2010-04-02 | 2010-09-16 | Seiko Epson Corp | Image display, projector, and image adjusting method of image display |
| US20100266189A1 (en) * | 2009-04-17 | 2010-10-21 | Riverain Medical Group, Llc | Multi-scale image normalization and enhancement |
| JP2011211276A (en) * | 2010-03-29 | 2011-10-20 | Seiko Epson Corp | Image processing apparatus, image display system, and image processing method |
| US20120120374A1 (en) * | 2010-11-15 | 2012-05-17 | Samsung Electronics Co., Ltd. | Projector and method for operating the projector |
| CN102841495A (en) * | 2011-06-22 | 2012-12-26 | 日立视听媒体股份有限公司 | Scan-type image display device |
| CN103037189A (en) * | 2012-12-05 | 2013-04-10 | 江苏清投视讯科技有限公司 | Method to achieve integrate output of large-size screen video images through much projection |
| JP2014142466A (en) * | 2013-01-23 | 2014-08-07 | Canon Inc | Projection device and control method of the same, program, and storage medium |
| CN104635408A (en) * | 2015-03-11 | 2015-05-20 | 青岛海信信芯科技有限公司 | Projection device, projection system and method for regulating projection brightness of projection system |
| US20150286123A1 (en) * | 2014-04-04 | 2015-10-08 | Canon Kabushiki Kaisha | Image projection apparatus and method of controlling image projection apparatus |
| CN106507075A (en) * | 2016-11-18 | 2017-03-15 | 海信集团有限公司 | A kind of projected image processing method, device and projection display system |
| CN107820067A (en) * | 2017-10-29 | 2018-03-20 | 苏州佳世达光电有限公司 | The joining method and splicing apparatus of more projected pictures |
| US20180173304A1 (en) * | 2016-12-15 | 2018-06-21 | Spy Eye, Llc | Brightness control for an augmented reality eye-mounted display |
| CN207560225U (en) * | 2017-12-04 | 2018-06-29 | 歌尔股份有限公司 | Projection device |
| CN207663203U (en) * | 2017-12-05 | 2018-07-27 | 成都优山光电技术有限公司 | A kind of projection arrangement of three colors laser light source |
| JP2019035939A (en) * | 2017-08-10 | 2019-03-07 | キヤノン株式会社 | Projector and control method thereof |
| CN208820949U (en) * | 2018-11-26 | 2019-05-03 | 长兴博泰电子科技股份有限公司 | A kind of laser cartoon projection arrangement |
| CN110177262A (en) * | 2019-05-24 | 2019-08-27 | 华中科技大学 | A kind of projection accelerated method, system and device based on bit depth segmentation |
| CN110868576A (en) * | 2018-08-27 | 2020-03-06 | 深圳光峰科技股份有限公司 | Laser light source based imaging system, modulation method thereof and storage medium |
| CN112019824A (en) * | 2019-05-30 | 2020-12-01 | 深圳光峰科技股份有限公司 | Display device |
| CN112118428A (en) * | 2019-06-19 | 2020-12-22 | 海信视像科技股份有限公司 | Image processing method and device and laser television |
| US20210092338A1 (en) * | 2019-09-20 | 2021-03-25 | Hisense Laser Display Co., Ltd. | Projection display system, controlling method thereof, and projection display device |
| JP2021063854A (en) * | 2019-10-10 | 2021-04-22 | 株式会社Ｊｖｃケンウッド | Correction table generation device, method for generating correction table, correction table generation program, and liquid crystal display device |
| CN113099197A (en) * | 2021-03-10 | 2021-07-09 | 山西汉威激光科技股份有限公司 | Dynamic black quick response laser projection control system |
| CN113141438A (en) * | 2021-04-13 | 2021-07-20 | 山东云海国创云计算装备产业创新中心有限公司 | Gray level image projection method, device, equipment and storage medium |
| CN113257162A (en) * | 2020-02-12 | 2021-08-13 | 北京小米移动软件有限公司 | Screen brightness adjusting method and device and storage medium |
| US20220030205A1 (en) * | 2019-03-12 | 2022-01-27 | Lumus Ltd. | Image projector |
| CN114035397A (en) * | 2014-08-29 | 2022-02-11 | 日亚化学工业株式会社 | Light source device and projector having the same |
| CN114339181A (en) * | 2021-12-29 | 2022-04-12 | 海信视像科技股份有限公司 | Laser projection equipment, projection image adjusting method and device |
| CN114459381A (en) * | 2022-02-21 | 2022-05-10 | 清华大学深圳国际研究生院 | Coding structure light projection method and system thereof |
| CN114500965A (en) * | 2021-12-28 | 2022-05-13 | 深圳市火乐科技发展有限公司 | Projection equipment control method and device, readable storage medium and projection equipment |
| CN115578984A (en) * | 2022-08-23 | 2023-01-06 | 北京京东方技术开发有限公司 | Display control method and device and display equipment |
| WO2023044786A1 (en) * | 2021-09-24 | 2023-03-30 | 华为技术有限公司 | Projection method and projection device |
| CN115880193A (en) * | 2021-09-28 | 2023-03-31 | 深圳光峰科技股份有限公司 | Image processing method, image processing device, electronic equipment and storage medium |
| CN116312305A (en) * | 2023-03-07 | 2023-06-23 | 宜宾市极米光电有限公司 | Brightness adjustment method and device, light source device and electronic equipment |
Patent Citations (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03172831A (en) * | 1989-12-01 | 1991-07-26 | Nippon Telegr & Teleph Corp <Ntt> | Projection type display device |
| JPH09116832A (en) * | 1995-10-17 | 1997-05-02 | Matsushita Joho Syst Kk | Image adjustment device |
| US20060071936A1 (en) * | 2002-11-27 | 2006-04-06 | Evgeniy Leyvi | Method of improving the perceptual contrast of displayed images |
| CN101151886A (en) * | 2005-03-29 | 2008-03-26 | 松下电器产业株式会社 | Image display and image displaying method |
| CN1913603A (en) * | 2005-08-10 | 2007-02-14 | 精工爱普生株式会社 | Image display apparatus and image adjusting method |
| CN1920907A (en) * | 2005-08-24 | 2007-02-28 | 精工爱普生株式会社 | Image display apparatus and control method for the same |
| US20070091118A1 (en) * | 2005-10-26 | 2007-04-26 | Allen William J | Image display system and method |
| KR20070054875A (en) * | 2005-11-24 | 2007-05-30 | 엘지전자 주식회사 | Image display apparatus and method |
| JP2007212946A (en) * | 2006-02-13 | 2007-08-23 | Casio Comput Co Ltd | Projector, projection method, and program |
| US20100266189A1 (en) * | 2009-04-17 | 2010-10-21 | Riverain Medical Group, Llc | Multi-scale image normalization and enhancement |
| CN101795374A (en) * | 2009-11-23 | 2010-08-04 | 清投视讯(北京)科技有限公司 | Method and system for image display of true seamless projection type large screen |
| JP2011211276A (en) * | 2010-03-29 | 2011-10-20 | Seiko Epson Corp | Image processing apparatus, image display system, and image processing method |
| JP2010204673A (en) * | 2010-04-02 | 2010-09-16 | Seiko Epson Corp | Image display, projector, and image adjusting method of image display |
| US20120120374A1 (en) * | 2010-11-15 | 2012-05-17 | Samsung Electronics Co., Ltd. | Projector and method for operating the projector |
| CN102841495A (en) * | 2011-06-22 | 2012-12-26 | 日立视听媒体股份有限公司 | Scan-type image display device |
| CN103037189A (en) * | 2012-12-05 | 2013-04-10 | 江苏清投视讯科技有限公司 | Method to achieve integrate output of large-size screen video images through much projection |
| JP2014142466A (en) * | 2013-01-23 | 2014-08-07 | Canon Inc | Projection device and control method of the same, program, and storage medium |
| US20150286123A1 (en) * | 2014-04-04 | 2015-10-08 | Canon Kabushiki Kaisha | Image projection apparatus and method of controlling image projection apparatus |
| CN114035397A (en) * | 2014-08-29 | 2022-02-11 | 日亚化学工业株式会社 | Light source device and projector having the same |
| CN104635408A (en) * | 2015-03-11 | 2015-05-20 | 青岛海信信芯科技有限公司 | Projection device, projection system and method for regulating projection brightness of projection system |
| CN106507075A (en) * | 2016-11-18 | 2017-03-15 | 海信集团有限公司 | A kind of projected image processing method, device and projection display system |
| US20180173304A1 (en) * | 2016-12-15 | 2018-06-21 | Spy Eye, Llc | Brightness control for an augmented reality eye-mounted display |
| JP2019035939A (en) * | 2017-08-10 | 2019-03-07 | キヤノン株式会社 | Projector and control method thereof |
| CN107820067A (en) * | 2017-10-29 | 2018-03-20 | 苏州佳世达光电有限公司 | The joining method and splicing apparatus of more projected pictures |
| CN207560225U (en) * | 2017-12-04 | 2018-06-29 | 歌尔股份有限公司 | Projection device |
| CN207663203U (en) * | 2017-12-05 | 2018-07-27 | 成都优山光电技术有限公司 | A kind of projection arrangement of three colors laser light source |
| CN110868576A (en) * | 2018-08-27 | 2020-03-06 | 深圳光峰科技股份有限公司 | Laser light source based imaging system, modulation method thereof and storage medium |
| CN208820949U (en) * | 2018-11-26 | 2019-05-03 | 长兴博泰电子科技股份有限公司 | A kind of laser cartoon projection arrangement |
| US20220030205A1 (en) * | 2019-03-12 | 2022-01-27 | Lumus Ltd. | Image projector |
| CN110177262A (en) * | 2019-05-24 | 2019-08-27 | 华中科技大学 | A kind of projection accelerated method, system and device based on bit depth segmentation |
| CN112019824A (en) * | 2019-05-30 | 2020-12-01 | 深圳光峰科技股份有限公司 | Display device |
| CN112118428A (en) * | 2019-06-19 | 2020-12-22 | 海信视像科技股份有限公司 | Image processing method and device and laser television |
| US20210092338A1 (en) * | 2019-09-20 | 2021-03-25 | Hisense Laser Display Co., Ltd. | Projection display system, controlling method thereof, and projection display device |
| JP2021063854A (en) * | 2019-10-10 | 2021-04-22 | 株式会社Ｊｖｃケンウッド | Correction table generation device, method for generating correction table, correction table generation program, and liquid crystal display device |
| CN113257162A (en) * | 2020-02-12 | 2021-08-13 | 北京小米移动软件有限公司 | Screen brightness adjusting method and device and storage medium |
| CN113099197A (en) * | 2021-03-10 | 2021-07-09 | 山西汉威激光科技股份有限公司 | Dynamic black quick response laser projection control system |
| CN113141438A (en) * | 2021-04-13 | 2021-07-20 | 山东云海国创云计算装备产业创新中心有限公司 | Gray level image projection method, device, equipment and storage medium |
| WO2023044786A1 (en) * | 2021-09-24 | 2023-03-30 | 华为技术有限公司 | Projection method and projection device |
| CN115880193A (en) * | 2021-09-28 | 2023-03-31 | 深圳光峰科技股份有限公司 | Image processing method, image processing device, electronic equipment and storage medium |
| CN114500965A (en) * | 2021-12-28 | 2022-05-13 | 深圳市火乐科技发展有限公司 | Projection equipment control method and device, readable storage medium and projection equipment |
| CN114339181A (en) * | 2021-12-29 | 2022-04-12 | 海信视像科技股份有限公司 | Laser projection equipment, projection image adjusting method and device |
| CN114459381A (en) * | 2022-02-21 | 2022-05-10 | 清华大学深圳国际研究生院 | Coding structure light projection method and system thereof |
| CN115578984A (en) * | 2022-08-23 | 2023-01-06 | 北京京东方技术开发有限公司 | Display control method and device and display equipment |
| CN116312305A (en) * | 2023-03-07 | 2023-06-23 | 宜宾市极米光电有限公司 | Brightness adjustment method and device, light source device and electronic equipment |
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