CN116033130B - Color temperature adjusting method and system for laser projection picture - Google Patents
Color temperature adjusting method and system for laser projection picture Download PDFInfo
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Abstract
The present disclosure relates to the field of projection, and in particular, to a method and system for adjusting color temperature of a laser projection screen. The method comprises the following steps: training an initial color temperature adjustment model based on the training data set to obtain a trained picture color temperature adjustment model; inputting the received video to be played into the picture color temperature adjustment model, and marking the color temperature of the video frame picture data to be played; reading a color temperature mark of video frame picture data, and inquiring the current for driving the laser in a comparison table of the color temperature and the current; and sequentially outputting video frame pictures of the video to be played, which display different color temperatures. The method and the device can solve the problem that the video frame picture projected by single color temperature adjustment has poor display effect in the playing process and does not meet the visual requirement of the user, so that the visual experience of the user is improved.
Description
Technical Field
The present disclosure relates to the field of projection, and in particular, to a method and system for adjusting color temperature of a laser projection screen.
Background
With the continuous development of science and technology, laser projectors are widely used for displaying better image quality expressive force such as high brightness and high color gamut compared with the traditional projection display. The light source module of the existing laser projector generally comprises a laser and a fluorescent wheel serving as a wavelength conversion device, wherein the laser can be a single-color laser or a double-color laser, so that one or two colors of laser are emitted, fluorescent powder is arranged on the fluorescent wheel and can be excited to emit fluorescence with corresponding colors, and the fluorescent powder and the colors of the laser emitted by the laser form three primary colors together and serve as a projection light source to provide illumination for an optical machine part so as to realize projection.
When the projector projects a display picture, as different users perceive different color temperatures of the display picture, for example, some people like the color temperature of about 6500k of warm tone, some people like the color temperature of about 7500k of cold tone, and the like, the color temperature needs to be finely adjusted to match the requirements of the users according to the difference of the people, but most of the current of driving the laser to emit laser is adjusted based on the color temperature in the current adjusting mode to achieve the aim of adjusting the played video frame based on a single target color temperature, but some video frame pictures cannot better reflect the picture effect based on the target color temperature, so that the display effect of the projected video picture is poor in the playing process, the visual requirement of the users is not met, and the visual experience of the users is affected.
Disclosure of Invention
In order to solve the problem that the display effect of video frame pictures projected by single color temperature adjustment is poor in the playing process and does not meet the visual requirement of a user, the visual experience of the user is improved, and the application provides a color temperature adjustment method and a color temperature adjustment system of a laser projection picture.
In a first aspect, the present application provides a method for adjusting a color temperature of a laser projection screen, which adopts the following technical scheme:
a color temperature adjusting method of a laser projection picture comprises the following steps: training an initial color temperature adjustment model based on the training data set to obtain a trained picture color temperature adjustment model; inputting the received video to be played into the picture color temperature adjustment model, and marking the color temperature of the video frame picture data to be played; reading a color temperature mark of video frame picture data, and inquiring the current for driving the laser in a comparison table of the color temperature and the current; and sequentially outputting video frame pictures of the video to be played, which display different color temperatures.
Through adopting above-mentioned technical scheme, through training initial colour temperature adjustment model based on training dataset, can obtain training completion's picture colour temperature adjustment model, through the video that waits to broadcast of will receiving is input in picture colour temperature adjustment model, can carry out colour temperature mark to the video frame picture data that waits to broadcast, and the rethread reads the colour temperature mark of video frame picture data, in colour temperature and electric current's contrast table, inquires the electric current of drive laser, again based on the electric current of drive laser, can output in proper order and demonstrate different colour temperatures the video frame picture of waiting to broadcast the video, and then solve and adjust the video frame picture of projection with single colour temperature and show the effect poor in the broadcast in-process, do not accord with user's vision demand's problem to improve user's visual experience.
Optionally, before the reading the color temperature mark of the video frame picture data and inquiring the current for driving the laser in the comparison table of the color temperature and the current, the method further includes:
recording color temperature adjustment behaviors, identifying the type of the played video, and acquiring habit color temperature adjustment information of a user;
based on the habit of a user, adjusting color temperature information, and acquiring reference color temperature values corresponding to different types of video frames;
judging whether the difference value between the color temperature of each video frame picture mark of the video to be played and the color temperature regulating reference is within a preset difference value threshold, if so, not changing the color temperature of the frame picture data frame head mark, and if not, changing the reference color temperature value as the color temperature of the frame picture data frame head mark.
By adopting the technical scheme, the color temperature information is regulated according to the habit of the user, the reference color temperature value corresponding to different types of video frames is obtained, whether the difference value between the color temperature of each video frame mark of the video to be broadcast and the color temperature regulation reference is within the preset difference value threshold value is judged, the color temperature of the frame head mark of the frame data is changed, the watching types of different users can be aimed, the marked color temperature of the video frames is regulated, the picture display effect is ensured during display, and the vision requirement of multiple people during watching simultaneously is met.
Optionally, the color temperature marking of the video frame picture data to be played specifically includes: and marking the color temperature of the field header of the video frame picture data to be played.
By adopting the technical scheme, the color temperature mark is carried out on the field header of the video frame picture data, so that the color temperature matched with the frame picture can be read when the video frame picture is read, the driving current of the laser is inquired based on the color temperature, and the current switching efficiency of the laser can be improved.
Optionally, the querying the current of the driving laser specifically includes: the current driving the laser to irradiate each color region on the fluorescent wheel is queried.
Through adopting above-mentioned technical scheme, through inquiring the electric current that the drive laser shines each colour region on the fluorescent wheel, the laser is based on drive current is different, can realize shining the laser beam of different energy sizes to the different colour region of fluorescent wheel, realizes the different chromatic light of outgoing, and then makes the picture that shows demonstrate different colour temperature.
Optionally, the inputting the received video to be played into the picture color temperature adjustment model, and performing color temperature marking on the picture data of the video frame to be played specifically includes:
and inputting the received video to be played into the picture color temperature adjustment model, and marking the field header of the picture data of the video frame to be played with the same color temperature based on a preset interval frame.
By adopting the technical scheme, the same color temperature mark is carried out on the preset interval frames, so that the frequency of color temperature adjustment can be reduced to a great extent, and the video frame picture is ensured to be displayed with the matched color temperature.
Optionally, the marking of the same color temperature based on the preset interval frame specifically includes:
inputting a first video frame picture in a preset interval frame into the picture color temperature adjustment model according to a play time sequence, and obtaining a mark color temperature matched with the first video frame picture;
and marking the video frame pictures in the preset interval frame with the same color temperature based on the marking color temperature matched with the first video frame picture.
Through adopting above-mentioned technical scheme, through the first video frame picture that obtains in the interval frame of predetermineeing, can obtain the mark colour temperature that first video frame picture matches, can carry out same colour temperature mark to the video frame picture in the interval frame of predetermineeing through the mark colour temperature that first video frame picture matches, can ensure that the electric current of the drive laser that the colour temperature corresponds can in time switch, guarantees that video frame picture shows with the colour temperature of matching.
Optionally, the reading the color temperature mark of the video frame picture data, and querying the current for driving the laser in a comparison table of the color temperature and the current specifically includes:
and inquiring the current of each color area irradiated on the fluorescent wheel by the driving laser based on the color temperature correspondence of the mark so as to delay the frame switching time and output the video frame of the video to be played.
By adopting the technical scheme, the video frame picture of the video to be broadcast is output by delaying the frame picture switching time, so that the current of the driving laser corresponding to the color temperature can be switched in time, and the video frame picture is further ensured to be displayed with the matched color temperature.
Optionally, after the receiving the video to be played is input to the picture color temperature adjustment model, the same color temperature marking is performed on the field header of the picture data of the video frame to be played based on a preset interval frame, the method further includes:
calculating a color temperature difference value based on the first color temperature and the second color temperature matched with the adjacent fixed frames;
judging whether the color temperature difference is within a preset difference threshold, if so, not changing the marked first color temperature and second color temperature; if not, the marked first color temperature is not changed, and the mark change is carried out by taking the maximum value obtained by adding the preset difference threshold value to the minimum value in the first color temperature and the second color temperature as the target second color temperature.
Through adopting above-mentioned technical scheme, through the first colour temperature and the second colour temperature that match based on adjacent fixed frame, calculate the colour temperature difference, judge with preset difference threshold value again and update colour temperature mark, can avoid the colour temperature value gap that adjacent picture matches too big, appear colour temperature jump when projection display, influence user's visual experience.
In a second aspect, the present application provides a system for adjusting a color temperature of a laser projection screen, which adopts the following technical scheme:
a laser projection picture color temperature adjustment system, comprising:
the picture color temperature adjustment model building module is used for training the initial color temperature adjustment model based on the training data set to obtain a trained picture color temperature adjustment model;
the video input module to be played is used for inputting the received video to be played into the picture color temperature adjustment model and marking the color temperature of the video frame picture data to be played;
the laser driving current inquiring module is used for reading color temperature marks of video frame picture data and inquiring current of a driving laser in a comparison table of color temperature and current;
and the video frame picture output module is used for sequentially outputting video frame pictures of the video to be played, which show different color temperatures, based on the current for driving the laser.
Through adopting above-mentioned technical scheme, through picture colour temperature adjustment model establishment module, can based on training dataset, training initial colour temperature adjustment model obtains training completion's picture colour temperature adjustment model, through waiting to play video input module can with receiving wait to play the video and input into in the picture colour temperature adjustment model, carry out colour temperature marking to waiting to play video frame picture data, through laser drive electric current inquiry module, can be used for reading the colour temperature marking of video frame picture data, in colour temperature and electric current's contrast table, the electric current of inquiry drive laser, rethread video frame picture output module can be based on the electric current of drive laser, the video frame picture of waiting to broadcast the video in proper order, and then solve with single colour temperature regulation projection video frame picture display effect poor in the broadcast in-process, do not accord with user's vision demand's problem to improve user's visual experience.
Optionally, the system for adjusting color temperature of a laser projection screen further includes:
the user habit color temperature adjustment information acquisition module is used for recording color temperature adjustment behaviors, identifying the type of the played video and acquiring habit color temperature adjustment information of the user;
the reference color temperature value acquisition module is used for acquiring reference color temperature values corresponding to different types of video frame pictures based on the habit adjustment color temperature information of the user;
the mark color temperature changing module is used for judging whether the difference value between the color temperature of each video frame picture mark of the video to be played and the color temperature regulating reference is within a preset difference value threshold, if so, the color temperature of the data frame head mark is not changed, and if not, the reference color temperature value is changed to be used as the color temperature of the data frame head mark.
Through adopting above-mentioned technical scheme, through user habit adjustment colour temperature information acquisition module, can record user habit adjustment colour temperature information, through benchmark colour temperature value acquisition module, can obtain the benchmark colour temperature value that different grade type video frame picture corresponds, through mark colour temperature change module, can judge whether the colour temperature of each video frame picture mark of waiting to broadcast video and colour temperature adjust the difference of benchmark in the preset difference threshold value, change the colour temperature of frame picture data frame head mark, and then realize looking the type to different users, adjust the mark colour temperature of its video frame picture, in order to ensure the picture display effect when showing, and satisfy the vision demand when many people watch simultaneously.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through training initial colour temperature adjustment model based on training dataset, can obtain training completion's picture colour temperature adjustment model, through the video input of waiting to broadcast to picture colour temperature adjustment model, can carry out colour temperature mark to the video frame picture data of waiting to broadcast, rethread reads the colour temperature mark of video frame picture data, in colour temperature and electric current's contrast table, inquire about the electric current of drive laser, again based on the electric current of drive laser, can output in proper order and demonstrate different colour temperatures the video frame picture of waiting to broadcast the video of colour temperature, and then solve and adjust projected video frame picture with single colour temperature and display poor effect in the broadcast in-process, do not accord with user's vision demand's problem to improve user's visual experience.
2. By marking the color temperature on the field header of the video frame picture data, the color temperature matched with the frame picture can be read when the video frame picture is read, the driving current of the laser is inquired based on the color temperature, and the current switching efficiency of the laser can be improved.
3. The color temperature difference value is calculated based on the first color temperature and the second color temperature matched with the adjacent fixed frames, and then the color temperature difference value is judged and updated with the preset difference value, so that the situation that the color temperature value difference of the adjacent picture matching is too large can be avoided, and the color temperature jump occurs during projection display to influence the visual experience of a user.
4. The color temperature information is regulated according to the habit of the user, the reference color temperature value corresponding to different types of video frames is obtained, whether the difference value between the color temperature of each video frame mark of the video to be played and the color temperature regulation reference is within the preset difference value threshold value is judged, the color temperature of the frame head mark of the frame data is changed, the view types of different users can be aimed at, the marked color temperature of the video frames can be regulated, the display effect of the frames is ensured during display, and the visual requirement of multiple people during simultaneous view is met.
Drawings
FIG. 1 is a schematic view of a scenario in which a user performs single color temperature adjustment in the related art;
FIG. 2 is a schematic diagram of an operation flow of color temperature adjustment performed by a user in the scene shown in FIG. 1;
FIG. 3 is a graph showing the intention of comparing the color temperature with the current of the laser beam of the driving laser irradiated on each color region of the fluorescent wheel during the color temperature adjustment;
FIG. 4 is a schematic diagram of a display screen output after implementing different color temperature adjustment for different video frames by applying the method for adjusting color temperature of a laser projection screen disclosed in an embodiment of the present application;
FIG. 5 is a schematic flow chart of a color temperature adjustment method for a laser projection screen according to an embodiment of the present disclosure;
FIG. 6 is a schematic flow chart of a color temperature adjustment method for a laser projection screen disclosed in FIG. 5;
fig. 7 is a schematic diagram of a state of preset output and actual output after application of the method for adjusting color temperature of a laser projection screen disclosed in an embodiment of the present application;
FIG. 8 is a schematic flow chart of a color temperature adjustment method for a laser projection screen disclosed in an embodiment of the present application when outputting;
FIG. 9 is a schematic flow chart of a color temperature adjustment method for a laser projection screen according to an embodiment of the present disclosure;
FIG. 10 is a schematic flow chart of a color temperature adjustment method for a laser projection screen according to an embodiment of the present disclosure;
FIG. 11 is a schematic view of a scene of a projection screen viewed by a plurality of users in the related art;
FIG. 12 is a schematic diagram of color temperature adjustment for different age groups for different video types;
FIG. 13 is a schematic flow chart of a color temperature adjustment method of a laser projection screen according to an embodiment of the present disclosure;
FIG. 14 is a schematic flow chart of another method for adjusting color temperature of a laser projection screen according to an embodiment of the present disclosure;
fig. 15 is a block diagram of a color temperature adjustment system for a laser projection screen according to another embodiment of the present application.
Reference numerals illustrate:
10. a picture color temperature adjustment model building module; 20. the video input module is used for inputting video to be played; 30. a laser driving current query module; 40. a video frame picture output module; 50. a user habit adjustment color temperature information acquisition module; 60. a reference color temperature value acquisition module; 70. the color temperature changing module is marked.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, a flow chart of color temperature adjustment in the related art is shown, which includes the following steps:
s101: the user adjusts the default color temperature of the projector by using the remote controller;
wherein, the color temperature is a unit of measure which indicates that the light contains color components, and is used for indicating the spectrum components of the light, and the different color temperatures show different colors; the mentioned projector can default to a projector with a blue laser transmitter to realize the image projection function; the blue laser emitter is used for generating lasers with different energy magnitudes through the magnitude of the driving current to irradiate on the fluorescent wheel to excite colored light, wherein the colored light can be three primary colors, namely red, green and blue, so that the synthesized light presents a picture with a certain color temperature, the corresponding relation between the current and the color temperature can be obtained, the corresponding relation between the current and the color temperature can be used as a mapping table, the current value corresponding to the color temperature can be inquired, and the color temperature can be regulated, and can be shown in fig. 3.
S102, a projector receives a color temperature adjusting instruction and determines a default color temperature;
the color temperature is understood to be the color temperature value exhibited by a picture formed by light synthesized from three primary colors.
For example, when the projector is turned on and used, the color temperature of the default picture is a, when the laser emitted by the laser emitter irradiates the red, yellow and blue areas on the fluorescent wheel respectively through the mapping table of the current and the color temperature, the corresponding currents for driving the laser emitter to emit, for example, A1, A2 and A3, respectively, when the user adjusts the default color temperature from a to Y through adjusting the default color temperature, the corresponding currents for driving the laser emitter to emit, for example, B1, B2 and B3, respectively, when the laser emitted by the laser emitter irradiates the red, yellow and blue areas on the fluorescent wheel respectively through the mapping table of the current and the color temperature.
S103: the projector projects the display screen according to the default color temperature.
From the above, in the technical solutions of steps S101 to S103, when playing the video frame, the current level of the laser emitted by the driving laser is adjusted based on the single color temperature to adjust the played video frame.
In the projection industry, the standard color temperature is 6500K, but based on the perception capability of different users, the standard color temperature is not suitable for all users, and the standard color temperature is regulated according to the personal vision requirement of the users, and it is also unavoidable that the scene in some video frames can not better present the effect of each video frame based on the standard color temperature or the regulated color temperature because the scene is suitable for high or low color temperature, so that the display effect of the projected video frames is poor in the playing process, does not meet the vision requirement of the users, and influences the vision experience of the users.
In view of the above problems, an embodiment of the present application discloses a method for adjusting color temperature of a laser projection screen, referring to the visual effects of a single color temperature adjusting video frame and a multi-color temperature adjusting video frame in fig. 4, by adjusting different color temperatures of different video frames in a video, each video frame presents an optimal color temperature, and visual experience of a user is improved.
Referring to fig. 5, a method for adjusting color temperature of a laser projection screen specifically includes the following steps:
s201: acquiring a training data set;
the training data set may include a plurality of sets of color temperature training data, where a set of color temperature training data includes a correspondence between an original color temperature training image and a color temperature training completion image.
S202: based on the training data set, training the initial color temperature adjustment model to obtain a trained picture color temperature adjustment model.
S203: inputting the received video to be played into the picture color temperature adjustment model to mark the color temperature of the field header of the picture data of the video frame to be played;
the color temperature marking is understood to mean marking a matched color temperature value on the data field table of the video frame picture, namely an optimal color temperature value so as to best represent the color temperature of the video frame picture effect; the color temperature mark is carried out on the field header of the video frame picture data, so that the color temperature matched with the frame picture can be read when the video frame picture is read, the driving current of the laser is inquired based on the color temperature, and the current switching efficiency of the laser can be improved.
For example, a video frame is displayed with trees, and after being preprocessed by the frame color temperature adjustment model, the best output color temperature is matched to 6800K, and the best output color temperature is marked on the field table header of the video frame data, as can be seen in fig. 5.
S204: inquiring the current of each color area irradiated on the fluorescent wheel by the driving laser in a comparison table of the color temperature and the current based on the color temperature of the data frame head mark;
wherein each color region on the fluorescent wheel includes a yellow region, a green region, and a transparent region, a blue laser is used by default in this embodiment, and a blue laser beam is irradiated; the arrangement of the transparent region is understood here to mean that the blue laser irradiation projects a blue light beam at the transparent region.
S205: and sequentially outputting video frame pictures of the video to be played based on the current of the drive laser which is correspondingly inquired and irradiates each color area on the fluorescent wheel.
The video frame picture of the video to be broadcast is output, which can be understood as that the projector reads the video frame picture data to be broadcast, and obtains the color temperature of the field header mark in the picture data, and the laser is driven to switch different currents based on the color temperature, so that laser beams with different energy are irradiated on different color areas on the fluorescent wheel to emit color light to synthesize a projection picture with the color temperature, the color temperature is the color temperature of the field header mark, and further different color temperature editing marks based on different video frame pictures are realized, the effect that different video frame pictures are displayed with different color temperatures is realized, the visual requirement of a user is met, and the visual experience of the user is improved.
For example, referring to fig. 6, first, the video frame 1~i is input into the frame color temperature adjustment model to perform the matching of the best color temperature, so as to output the video frame whose field header of the video frame 1~i is marked with the color temperature; then reading the color temperature of the mark, and inquiring the currents of the yellow area, the green area and the transparent area, which are irradiated on the fluorescent wheel, of the driving laser corresponding to the color temperature in a comparison report of the color temperature and the currents; and outputting video frames according to the matched color temperature based on the inquired laser current.
Referring to fig. 7, fig. 7 (a) may be understood as a preset output state, and the color temperature adjustment frequency of the video frame picture can be matched in the processing performance of the projection, and fig. 7 (b) may be understood as that the color temperature adjustment frequency of the video frame picture cannot be matched in the processing performance of the projection, resulting in a delay of the color temperature matched when the video frame picture is output, and in this case, the frame picture is not matched with the color temperature actually presented, that is, a dislocation phenomenon occurs, so that in order to avoid this, step S203 specifically includes:
s2031: and inputting the received video to be played into the picture color temperature adjustment model, and marking the same color temperature of the field header of the picture data of the video frame to be played based on a preset interval frame.
The preset interval frame may be 3 frames, 5 frames, etc., which is not limited herein; the same color temperature marking is performed based on the preset interval frame, which can be understood as inputting the first video frame picture in the preset interval frame into the picture color temperature adjustment model according to the playing time sequence, obtaining the marking color temperature matched with the first video frame picture, and then performing the same color temperature marking on all the video frame pictures in the preset interval frame based on the marking color temperature matched with the first video frame picture so as to ensure that the video frame pictures are displayed with the matched color temperature.
Further, in another embodiment, step S205 specifically includes: based on the current of the drive laser which is correspondingly inquired by the color temperature and irradiates each color area on the fluorescent wheel, delaying the frame switching time and outputting the video frame of the video to be played;
the delay frame switching time can be understood as the time of reading the color temperature of the frame mark and switching the current of the driving laser based on the color temperature, so as to ensure that the current of the driving laser corresponding to the color temperature can be switched in time, and ensure that the video frame is displayed with the matched color temperature.
For example, referring to fig. 8, the video frames are preprocessed by matching a single color temperature every 3 frames, the time is set to be T1, and the video frames 1 to i, T3 and T1 are sequentially output at the time of T3, which is the phase difference time, i.e. the delay time.
Further, based on the above-mentioned processing of S2031, in order to avoid that the color temperature value gap between adjacent pictures is too large, when the projection display is performed, color temperature jump occurs, which affects the visual experience of the user, in another embodiment, referring to fig. 9, after step S2031, the method further includes:
s2032: a color temperature difference is calculated based on the first color temperature Wi-1 and the second color temperature Wi matched by the adjacent fixed frames.
S2033, judging whether the color temperature difference is within a preset difference threshold, if so, not changing the marked first color temperature Wi-1 and second color temperature Wi; if not, the marked first color temperature Wi-1 is not changed, and the mark change is carried out by taking the minimum value of the first color temperature Wi-1 and the second color temperature Wi plus the maximum value of the preset difference threshold value as the final second color temperature Wi 1.
For example, when Wi-1 is 6420K and Wi is 6480K, the difference between the two is 60K, if Wi-1 is not within the preset difference threshold, wi-1 is 6420K, wi is changed to 6420k+40k=6460K, the color temperature mark updating of the color temperature of 6460K is performed on the video frame frames in the preset interval frames including Wi, and then the difference between the color temperature value matched with the next video frame and 6460K is continuously determined;
when Wi-1 is 6420K, wi is 6440K, the difference between the two is 20K, the first color temperature Wi-1 and the second color temperature Wi of the mark are not changed within the preset difference value threshold, then the difference value between the color temperature value corresponding to the adjacent video frame picture of the video frame picture matched with the second color temperature Wi and Wi is judged according to the video frame picture time sequence, if the difference value is still within the preset difference value threshold, the judgment of one frame by one frame is continuously carried out according to the time sequence until the difference value of the color temperature matched with the adjacent frame is judged not to be within the preset difference value threshold, and single color temperature updating of a preset interval frame which starts with the frame is carried out.
For example, referring to fig. 10, the preset interval frame is 3 frames, firstly, the video frame 1-i of the video to be played is marked with the color temperature of the video frame, then it is judged whether the color temperature difference value of the adjacent fixed frame is within the preset difference value threshold, after the judgment processing, the single color temperature W1 of the frame 1-3 frame is obtained, after the time delay T3-T1, the output frame display and the frame 4 frame are performed, the difference value and the preset difference value threshold are judged based on the matched optimal color temperature and W1, the matched color temperature W21 is updated, and meanwhile, based on the preset interval frame, the single color temperature W21 is marked on the frame 4-6 frames, and after the time delay T3-T1, the output frame display is performed.
Through the technical scheme, the adjacent video frame pictures and the adjacent video frame pictures at the preset interval are subjected to color temperature matching adjustment based on the preset difference threshold, the situation that vision jumps due to large adjacent matching color temperature difference can be avoided, and the visual experience sense is improved.
In addition, referring to fig. 11 and fig. 12, for users in different ages, children, young people and old people have different color temperature perceptibility and different types of biased projection videos, the optimal color temperature matched by the picture color temperature adjustment model in the above technical scheme does not necessarily meet the vision requirement of all people, for example, the projection video biased by the children is an animation, an entertainment, a game and the like, and the projection picture is adjusted to D1 based on the requirement vision requirement; the projection video biased by young people is shopping, variety, stars and the like, and the projection picture is adjusted to D2 based on the visual demand; the projected video biased by the elderly is ancient dress, drama and the like, and the projected picture is adjusted to be D3 based on the demand vision demand.
Based on the above-mentioned color temperature requirements of different clients for different video types, in another embodiment of the present application, referring to fig. 13, based on the above-mentioned embodiment, before step S204, the method further includes:
s211: recording color temperature adjustment behaviors, identifying the type of the played video, and acquiring habit color temperature adjustment information of a user;
the recording of the color temperature adjustment behavior may be recording the previous behavior of the user for adjusting the color temperature of different types of projection pictures, where the user habit adjusts the color temperature information to include the adjusted color temperature and the video type of the corresponding projection picture, and the user may be multiple, which is not limited herein.
S212: based on the habit of a user, adjusting color temperature information, and acquiring reference color temperature values corresponding to different types of video frames;
it can be understood here that, by recording the habit of the user of previous adjustment, a color temperature value corresponding to each video type is obtained, and the color temperature value is used as an adjustment reference for the subsequent picture.
S213: judging whether the difference value between the color temperature of each video frame picture mark of the video to be played and the color temperature regulating reference is within a preset difference value threshold, if so, not changing the color temperature of the frame picture data frame head mark, and if not, changing the reference color temperature value as the color temperature of the frame picture data frame head mark.
The color temperature of the video frame picture mark to be broadcast is updated by judging whether the difference value of the color temperature of each video frame picture mark and the color temperature regulating reference is within a preset difference value threshold value, so that the mark color temperature of the video frame picture can be regulated according to the watching types of different users, the picture display effect is ensured during display, and the visual requirement of multiple people during simultaneous watching is met.
For example, referring to fig. 14, the optimal color temperatures marked by the video frames 1 to 3 to be played are A1, A2 and A3 in sequence, the judgment of the preset difference threshold is performed based on the video type and the corresponding reference value, and for the video frame 1, the difference between the A1 and the D2 is within the preset difference threshold, the video frame 1 is marked with the color temperature by the D2 and output; for the video frame picture 2, the difference value between A2 and D3 is not within the preset difference value threshold, and the video frame picture 2 is marked with the color temperature of A2 and output; for the video frame 3, the difference between A3 and D1 is within the preset difference threshold, and the video frame 1 is marked with the color temperature of D1 and output.
The embodiment can meet the visual requirement of watching the projection video by multiple people, can ensure the effect of picture display and increase the visual experience of users.
In another embodiment of the present application, a system for adjusting color temperature of a laser projection screen is disclosed, comprising: the system comprises a picture color temperature adjustment model building module 10, a video input module 20 to be played, a laser driving current inquiring module 30, a video frame picture output module 40, a user habit adjustment color temperature information obtaining module 50, a reference color temperature value obtaining module 60 and a mark color temperature changing module 70.
The picture color temperature adjustment model building module 10 is used for training an initial color temperature adjustment model based on a training data set to obtain a trained picture color temperature adjustment model;
the video input module 20 to be played is configured to input the received video to be played into the picture color temperature adjustment model, and mark the color temperature of the video frame picture data to be played;
the laser driving current inquiring module 30 is used for reading color temperature marks of video frame picture data, and inquiring current for driving the laser in a comparison table of color temperature and current;
a video frame output module 40, configured to sequentially output video frames of the video to be played based on a current for driving the laser;
the user habit color temperature adjustment information obtaining module 50 is used for recording color temperature adjustment behaviors, identifying the type of the video to be played, and obtaining habit color temperature adjustment information of the user;
the reference color temperature value obtaining module 60 is configured to obtain reference color temperature values corresponding to different types of video frames based on the custom adjustment color temperature information of the user;
the mark color temperature changing module 70 is configured to determine whether a difference between a color temperature of each video frame picture mark of the video to be played and a color temperature adjustment reference is within a preset difference threshold, if so, not changing the color temperature of the data frame head mark, and if not, changing the reference color temperature value as the color temperature of the data frame head mark.
It should be noted that, the color temperature adjustment system of the laser projection screen disclosed in the embodiments of the present application is used to implement the above-mentioned color temperature adjustment method of the laser projection screen, so that detailed description thereof will not be given here. Alternatively, each module in the present embodiment and the other operations or functions described above are respectively for realizing the method in the foregoing embodiment.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments may be arbitrarily combined and matched without conflict in technical features, contradiction in structure, and departure from the purpose of the present invention.
In the several embodiments provided in the present invention, it should be understood that the disclosed methods and systems may be implemented in other ways. For example, the modules included in the systems described above are merely illustrative, the division of modules is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit/module in the embodiments of the present invention may be integrated in one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated in one unit/module. The integrated units/modules may be implemented in hardware or in hardware plus software functional units/modules.
The integrated units/modules implemented in the form of software functional units/modules described above may be stored in a computer readable storage medium. The software functional units described above are stored in a storage medium and include instructions for causing one or more processors of a computer device (which may be a personal computer, a server, or a network device, etc.) to perform some steps of the methods described in the various 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 (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for adjusting color temperature of a laser projection screen, comprising:
training an initial color temperature adjustment model based on the training data set to obtain a trained picture color temperature adjustment model;
inputting the received video to be played into the picture color temperature adjustment model, and marking the color temperature of the picture data of the video frame to be played;
recording color temperature adjustment behaviors, identifying the type of the played video, and acquiring habit color temperature adjustment information of a user;
based on the habit of a user, adjusting color temperature information, and acquiring reference color temperature values corresponding to different types of video frames;
judging whether the difference value between the color temperature of each video frame picture mark of the video to be played and the color temperature regulating reference is within a preset difference value threshold, if so, not changing the color temperature of the data frame head mark, and if not, changing the reference color temperature value as the color temperature of the data frame head mark;
reading a color temperature mark of video frame picture data, and inquiring the current for driving the laser in a comparison table of the color temperature and the current;
and sequentially outputting video frame pictures of the video to be played, which display different color temperatures, based on the current for driving the laser.
2. The method for adjusting color temperature of a laser projection screen according to claim 1, wherein the color temperature marking of the video frame screen data to be played specifically comprises:
and marking the color temperature of the field header of the video frame picture data to be played.
3. The method for adjusting color temperature of a laser projection screen according to claim 1, wherein the querying the current of the driving laser specifically comprises:
the current driving the laser to irradiate each color region on the fluorescent wheel is queried.
4. The method according to claim 2, wherein the inputting the received video to be played into the frame color temperature adjustment model, the marking the color temperature of the frame data of the video to be played, specifically comprises:
and inputting the received video to be played into the picture color temperature adjustment model, and marking the same color temperature of the field header of the picture data of the video frame to be played based on a preset interval frame.
5. The method for adjusting color temperature of a laser projection screen according to claim 4, wherein the same color temperature marking is performed based on a preset interval frame, specifically comprising:
inputting a first video frame picture in a preset interval frame into the picture color temperature adjustment model according to a play time sequence, and obtaining a mark color temperature matched with the first video frame picture;
and marking the video frame pictures in the preset interval frame with the same color temperature based on the marking color temperature matched with the first video frame picture.
6. The method for adjusting color temperature of a laser projection screen according to claim 3, wherein the reading of the color temperature mark of the video frame screen data includes querying the current driving the laser in a color temperature versus current table, specifically including:
and inquiring the current of each color area irradiated on the fluorescent wheel by the driving laser based on the color temperature correspondence of the mark so as to delay the frame switching time and output the video frame of the video to be played.
7. The method according to claim 4, wherein after the receiving the video to be played is input to the picture color temperature adjustment model, the field header of the picture data of the video frame to be played is marked with the same color temperature based on a preset interval frame, further comprising:
calculating a color temperature difference value based on the first color temperature and the second color temperature matched with the adjacent fixed frames;
judging whether the color temperature difference is within a preset difference threshold, if so, not changing the marked first color temperature and second color temperature; if not, the marked first color temperature is not changed, and the mark change is carried out by taking the maximum value obtained by adding the preset difference threshold value to the minimum value in the first color temperature and the second color temperature as the target second color temperature.
8. A laser projection screen color temperature adjustment system, comprising:
the picture color temperature adjustment model building module is used for training the initial color temperature adjustment model based on the training data set to obtain a trained picture color temperature adjustment model;
the video input module to be played is used for inputting the received video to be played into the picture color temperature adjustment model, and marking the color temperature of the picture data of the video frame to be played;
the laser driving current inquiring module is used for reading color temperature marks of video frame picture data and inquiring current of a driving laser in a comparison table of color temperature and current;
the video frame picture output module is used for sequentially outputting video frame pictures of the video to be played, which show different color temperatures, based on the current for driving the laser;
the user habit color temperature adjustment information acquisition module is used for recording color temperature adjustment behaviors, identifying the type of the played video and acquiring habit color temperature adjustment information of the user;
the reference color temperature value acquisition module is used for acquiring reference color temperature values corresponding to different types of video frame pictures based on the habit adjustment color temperature information of the user;
the mark color temperature changing module is used for judging whether the difference value between the color temperature of each video frame picture mark of the video to be played and the color temperature regulating reference is within a preset difference value threshold, if so, the color temperature of the data frame head mark is not changed, and if not, the reference color temperature value is changed to be used as the color temperature of the data frame head mark.
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| CN113766341A (en) * | 2020-06-04 | 2021-12-07 | 深圳市万普拉斯科技有限公司 | Television image quality adjusting method, device and system and television equipment |
| CN114567813A (en) * | 2022-03-08 | 2022-05-31 | 深圳创维－Rgb电子有限公司 | Image quality improving method and device, playing equipment and computer readable storage medium |
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| CN113766341A (en) * | 2020-06-04 | 2021-12-07 | 深圳市万普拉斯科技有限公司 | Television image quality adjusting method, device and system and television equipment |
| CN114567813A (en) * | 2022-03-08 | 2022-05-31 | 深圳创维－Rgb电子有限公司 | Image quality improving method and device, playing equipment and computer readable storage medium |
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