CN103323218A - Method and system for luminance detection and correction of projector - Google Patents
Method and system for luminance detection and correction of projector Download PDFInfo
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- CN103323218A CN103323218A CN201310248520XA CN201310248520A CN103323218A CN 103323218 A CN103323218 A CN 103323218A CN 201310248520X A CN201310248520X A CN 201310248520XA CN 201310248520 A CN201310248520 A CN 201310248520A CN 103323218 A CN103323218 A CN 103323218A
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- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 230000001915 proofreading effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0228—Control of working procedures; Failure detection; Spectral bandwidth calculation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
- G01J1/28—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source
- G01J1/30—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors
- G01J1/32—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors adapted for automatic variation of the measured or reference value
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a method for luminance detection and correction of a projector. The method comprises the steps that an initial luminance estimation model of the projector is obtained, wherein the initial luminance estimation model comprises current values and luminance estimation sections corresponding to the current values; multiple times of luminance detection are conducted under a preset adjusted current value, a plurality of corresponding adjusted luminance values are obtained, and the average value of the adjusted luminance values is obtained; the average value of the adjusted luminance values is compared with a middle point value, corresponding to one adjusted current value, of each luminance estimation section in the initial luminance estimation model, and an adjustment error is obtained; each luminance estimation section corresponding to one current value in the initial luminance estimation model is adjusted according to the adjustment error, and the adjusted luminance estimation model is obtained; according to the adjusted luminance estimation model, the detected luminance value is corrected and output. The invention further provides a system for luminance detection and correction of the projector, the luminance value detected by a luminance sensor in the projector is corrected and the luminance value with high accuracy is output.
Description
Technical field
The present invention relates to projector's brightness adjustment technical field, the brightness that particularly relates to a kind of projector detects bearing calibration, and a kind of brightness of projector detects corrective system.
Background technology
Projector can pass through LED (Light Emitting Diode, light emitting diode) light source with image or video-projection output.Brightness is a base attribute of LED projector, serious luminance deviation can produce demonstration partially secretly, partially bright or colour cast phenomenon.Obtaining projector's brightness by luminance sensor is a kind of means commonly used, but the brightness that luminance sensor estimates and projector's intrinsic brilliance have error, and the brightness estimation precision of different luminance sensors is different, and precision more high price is more expensive.
There is error in luminance sensor to the brightness testing result of LED projector, and some errors reach ± more than 2%, namely in same current value, the same brightness situation, and have an appointment about 4% error of the minimum and maximum brightness value that luminance sensor obtains constantly in difference.This detects for the brightness of LED projector and has brought very large problem, and the brightness testing result that error is excessive is so that a lot of undesirable based on the projector applications expression effect of brightness.
Summary of the invention
Based on this, the brightness that the invention provides a kind of projector detects bearing calibration and system, can proofread and correct to the brightness value that the luminance sensor in the projector is measured the brightness value that output accuracy is higher.
A kind of brightness of projector detects bearing calibration, comprises the steps:
Obtain the original intensity appraising model of projector, comprise each current value and corresponding brightness estimation interval thereof in the described original intensity appraising model;
Under default adjustment current value, carry out repeatedly brightness and detect, obtain corresponding a plurality of adjustment brightness values, ask for the mean value of a plurality of adjustment brightness values;
The size of the midrange that the corresponding brightness estimation in described original intensity appraising model of the mean value of more described a plurality of adjustment brightness values and described adjustment current value is interval is adjusted error;
Adjust the brightness estimation that each current value is corresponding in the described original intensity appraising model according to described alignment error interval, the brightness appraising model after being adjusted;
According to the brightness appraising model after the described adjustment, the brightness value that detects is proofreaied and correct rear output.
A kind of brightness of projector detects corrective system, comprising:
Acquisition module for the original intensity appraising model that obtains projector, comprises each current value and corresponding brightness estimation interval thereof in the described original intensity appraising model;
Ask for module, be used under default adjustment current value, carrying out repeatedly brightness and detect, obtain corresponding a plurality of adjustment brightness values, ask for the mean value of a plurality of adjustment brightness values;
Comparison module is used for the mean value of more described a plurality of adjustment brightness values and described adjustment current value is estimated interval midrange in brightness corresponding to described original intensity appraising model size, is adjusted error;
Adjusting module is used for adjusting brightness estimation corresponding to described each current value of original intensity appraising model according to described alignment error interval, the brightness appraising model after being adjusted;
Output module is used for according to the brightness appraising model after the described adjustment, and the brightness value that detects is proofreaied and correct rear output.
The brightness of above-mentioned projector detects bearing calibration and system, detect the higher average brightness of precision that obtains by under default adjustment current value, carrying out repeatedly brightness, relatively should adjust brightness value corresponding to current value in this average brightness and the original intensity appraising model, the original intensity appraising model that error is larger is adjusted, obtain the brightness appraising model after the less adjustment of error, the brightness value of detection can be proofreaied and correct rear output according to this model; The average brightness that the present invention is based on repeated detection has been adjusted the original intensity appraising model, and the effective error rate of Dimming valuation has improved the precision of brightness value and implementation procedure Simple fast.
Description of drawings
Fig. 1 is that the brightness of projector of the present invention detects bearing calibration schematic flow sheet in one embodiment.
Fig. 2 is the schematic diagram of a kind of original intensity appraising model among Fig. 1.
Fig. 3 be among Fig. 1 single brightness detect and repeatedly brightness detect the error schematic diagram.
Fig. 4 is the schematic diagram of Fig. 1 original intensity appraising model adjustment process.
Fig. 5 is that the brightness of projector of the present invention detects corrective system structural representation in one embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As shown in Figure 1, be that the brightness of projector of the present invention detects bearing calibration schematic flow sheet in one embodiment, comprise the steps:
S11, obtain the original intensity appraising model of projector, comprise in the described original intensity appraising model that each current value and corresponding brightness estimation thereof are interval;
Luminance sensor to the brightness of LED projector estimation exist error, some errors reach ± more than 2%.Be in same current value, the same brightness situation, have an appointment about 4% error of the minimum and maximum brightness value that luminance sensor obtains constantly in difference, therefore a certain current value can corresponding brightness value set;
Original intensity appraising model in the present embodiment, can obtain according to the historical image data of projector, also this projector can be carried out the brightness collecting test and get access to, it is interval that this original intensity appraising model records a brightness estimation corresponding to each different current values, as shown in Figure 2, this figure is the schematic diagram of a kind of original intensity appraising model of getting access to, curve H21 and H22 have consisted of brightness estimation interval corresponding to each current value, are the error range of the brightness value that detects by luminance sensor under this current value between curve H21 and the H22.
In a preferred embodiment, described original intensity appraising model is data list, each described current value and corresponding maximum original intensity value and minimum original intensity value thereof are stored in described data list, it is interval that the maximum original intensity value that each described current value is corresponding and minimum original intensity value consist of brightness estimation corresponding to each described current value, by data list storing initial brightness appraising model, can carry out more quickly data and process.In addition, this original intensity appraising model also can be coordinate diagram or arranges by other modes such as equations.
S12, under default adjustment current value, carry out repeatedly brightness and detect, obtain corresponding a plurality of adjustment brightness values, ask for the mean value of a plurality of adjustment brightness values;
Although the estimation of the luminance sensor of single has error, but in same current value, the same brightness situation, brightness estimation mean value repeatedly can tend to stable, estimate that with brightness repeatedly mean value is higher than the brightness estimated value precision of single as the brightness estimated value, error is little, and the average that number of times is more, error is less;
As shown in Figure 3, in same electric current, same brightness situation, two dotted lines represent the brightness estimated value scope H31 of an estimated value; Article two, solid line represents repeatedly the estimated value scope H32 of estimated value average, and therefore repeatedly the method for average estimation can effectively improve brightness estimation precision, Dimming estimation error.
After getting access to the original intensity appraising model from step S11, because the error of this model is larger, need adjust it, reduce error; In this step, according to default adjustment current value, utilize luminance sensor to carry out repeatedly brightness and detect, obtain a plurality of adjustment brightness values corresponding with this adjustment current value, ask for the mean value of a plurality of adjustment brightness values.
The size of the midrange that the corresponding brightness estimation in described original intensity appraising model of the mean value of S13, more described a plurality of adjustment brightness values and described adjustment current value is interval is adjusted error;
From step S12, obtained adjusting the mean value of brightness value a plurality of adjustment brightness values of acquisition under repeatedly brightness detects, because higher than the brightness estimated value precision of single as the brightness estimated value with brightness estimation mean value repeatedly, error is little, and the average that number of times is more, error is less, therefore can think that the error of the mean value of a plurality of adjustment brightness values of acquisition is less under repeatedly brightness detects, precision is higher;
In described original intensity appraising model, read original intensity corresponding to default adjustment brightness value interval, ask this interval midrange, the error of this brightness value is larger; Because the precision of the mean value of a plurality of adjustment brightness values that obtain under repeatedly brightness detects is higher, therefore compare both sizes, can be adjusted error;
In a preferred embodiment, can be with the midrange in described adjustment current value corresponding brightness estimation interval in described original intensity appraising model, divided by the mean value of described a plurality of adjustment brightness values, the ratio that obtains is as described alignment error.
S14, to adjust each current value is corresponding in the described original intensity appraising model brightness estimation according to described alignment error interval, the brightness appraising model after being adjusted;
After from step S13, being adjusted error, adjust accordingly the brightness estimation that each current value is corresponding in the described original intensity appraising model interval, the brightness appraising model after being adjusted, this model is higher compared to original intensity appraising model precision, and error is less.
In a preferred embodiment, maximum original intensity value and minimum original intensity that each described current value in the described original intensity appraising model is corresponding are on duty with described alignment error, obtain the brightness appraising model after the described adjustment; Step S13 falls into a trap to let it pass and adjusts current value at the ratio of the mean value that obtains after the repeated detection with brightness value corresponding in described original intensity appraising model, accordingly corresponding maximum original intensity value and the minimum original intensity value of each current value that records in the data list multiplied each other with this ratio, thereby realized reducing the purpose of the error of original intensity appraising model, obtained the brightness appraising model after the adjustment of degree of precision.
As shown in Figure 4, adjustment current value default among Fig. 4 a is C0, according to C0 brightness estimation interval (interval that C0 is corresponding among the figure [B1, B2]) in the original intensity appraising model, calculates this interval midrange, obtains B0;
Adjusting under the current value C0, utilize the luminance sensor circulation repeatedly to obtain brightness, calculate mean value B_c, shown in Fig. 4 b, adjust current value C0 to two different brightness value B0 and brightness value B_c should be arranged, there is certain error in the mean value of original intensity appraising model and repeated detection;
With B_c divided by the ratio of B0 as alignment error, the original intensity appraising model being carried out (two dotted line H4b1 and H4b2) adjusts, corresponding maximum original intensity value and the minimum original intensity value of each current value that records in the data list multiplied each other the brightness appraising model after finally being adjusted (two solid line H4b3 and H4b4) with this ratio.
Be a data tabulation in the following table, stored original intensity appraising model four groups of data wherein:
| Current value | Minimum original intensity value | Maximum original intensity value |
| 13 | 8 | 18 |
| 14 | 10 | 20 |
| 15 | 12 | 22 |
| 16 | 14 | 24 |
In the present embodiment, default adjustment current value C0 is 14 in the upper table, carry out repeated detection, the mean value B_c that calculates is 13, in the original intensity appraising model in upper table, adjusting brightness estimation interval corresponding to current value C0 is [10,20], getting this interval midrange B0 is 15, so alignment error is 13/15; According to alignment error, corresponding maximum original intensity value and the minimum original intensity value of each current value that records in the data list multiplied each other with this ratio, the brightness appraising model after finally being adjusted is as follows:
| Current value | Minimum original intensity value | Maximum original intensity value |
| 13 | 6.93 | 15.6 |
| 14 | 8.67 | 17.33 |
| 15 | 10.4 | 19.07 |
| 16 | 12.13 | 20.8 |
In the present embodiment, said process is set forth is that the adjustment current value preset is one situation, in fact, also can be according to the size of original intensity appraising model, model is divided into a plurality of parts, default a plurality of adjustment current values, corresponding one of each part is adjusted current value, each part is adjusted accordingly afterwards, and the precision of model is higher after then adjusting.
S15, according to the brightness appraising model after the described adjustment, the brightness value that detects is proofreaied and correct rear output;
Obtained brightness appraising model after the higher adjustment of precision from step S14, detect brightness value afterwards after, again output after can proofreading and correct brightness value according to this model, output brightness value precision is higher;
In the present embodiment, can compare in the brightness estimation interval that the brightness value that detect under the current current value is corresponding with current current value in the brightness appraising model after described adjustment;
If in the brightness that current current value is corresponding in the brightness appraising model of the brightness value that gets access under the current current value after the described adjustment estimation interval, then export the brightness value that detects under the described current current value;
If the brightness value that gets access under the current current value greater than maximum brightness value corresponding to current current value in the brightness appraising model after described adjustment, is then exported maximum brightness value corresponding to current current value in the described brightness appraising model after described adjustment;
If the brightness value that gets access under the current current value less than minimum luminance value corresponding to current current value in the brightness appraising model after described adjustment, is then exported minimum luminance value corresponding to current current value in the described brightness appraising model after described adjustment.
The present invention also provides a kind of brightness of projector to detect corrective system, comprising:
Luminance sensor to the brightness of LED projector estimation exist error, some errors reach ± more than 2%.Be in same current value, the same brightness situation, have an appointment about 4% error of the minimum and maximum brightness value that luminance sensor obtains constantly in difference, therefore a certain current value can corresponding brightness value set;
Original intensity appraising model in the present embodiment, can obtain according to the historical image data of projector, also this projector can be carried out the brightness collecting test and get access to, it is interval that this original intensity appraising model records a brightness estimation corresponding to each different current values, as shown in Figure 2, this figure is the schematic diagram of a kind of original intensity appraising model of getting access to, curve H21 and H22 have consisted of brightness estimation interval corresponding to each current value, are the error range of the brightness value that detects by luminance sensor under this current value between curve H21 and the H22.
In a preferred embodiment, described original intensity appraising model in the described acquisition module 51 is stored by data list, each described current value and corresponding maximum original intensity value and minimum original intensity value thereof are stored in described data list, it is interval that the maximum original intensity value that each described current value is corresponding and minimum original intensity value consist of brightness estimation corresponding to each described current value, by data list storing initial brightness appraising model, can carry out more quickly data and process.
Ask for module 52, be used under default adjustment current value, carrying out repeatedly brightness and detect, obtain corresponding a plurality of adjustment brightness values, ask for the mean value of a plurality of adjustment brightness values;
Although the estimation of the luminance sensor of single has error, but in same current value, the same brightness situation, brightness estimation mean value repeatedly can tend to stable, estimate that with brightness repeatedly mean value is higher than the brightness estimated value precision of single as the brightness estimated value, error is little, and the average that number of times is more, error is less;
As shown in Figure 3, in same electric current, same brightness situation, two dotted lines represent the brightness estimated value scope H31 of an estimated value; Article two, solid line represents repeatedly the estimated value scope H32 of estimated value average, and therefore repeatedly the method for average estimation can effectively improve brightness estimation precision, Dimming estimation error.
After getting access to the original intensity appraising model from acquisition module 51, because the error of this model is larger, need adjust it, reduce error; In this step, according to default adjustment current value, utilize luminance sensor to carry out repeatedly brightness and detect, obtain a plurality of adjustment brightness values corresponding with this adjustment current value, ask for the mean value of a plurality of adjustment brightness values.
From ask for module 52, obtained adjusting the mean value of brightness value a plurality of adjustment brightness values of acquisition under repeatedly brightness detects, because higher than the brightness estimated value precision of single as the brightness estimated value with brightness estimation mean value repeatedly, error is little, and the average that number of times is more, error is less, therefore can think that the error of the mean value of a plurality of adjustment brightness values of acquisition is less under repeatedly brightness detects, precision is higher;
In described original intensity appraising model, read original intensity corresponding to default adjustment brightness value interval, ask this interval midrange, the error of this brightness value is larger; Because the precision of the mean value of a plurality of adjustment brightness values that obtain under repeatedly brightness detects is higher, therefore compare both sizes, can be adjusted error;
In a preferred embodiment, described comparison module also is used for: with the midrange of described adjustment current value in brightness estimation interval corresponding to described original intensity appraising model, divided by the mean value of described a plurality of adjustment brightness values, the ratio that obtains is as described alignment error.
Adjusting module 54 is used for adjusting brightness estimation corresponding to described each current value of original intensity appraising model according to described alignment error interval, the brightness appraising model after being adjusted;
After from comparison module 53, being adjusted error, adjust accordingly the brightness estimation that each current value is corresponding in the described original intensity appraising model interval, brightness appraising model after being adjusted, this model is higher compared to original intensity appraising model precision, and error is less; In the present embodiment, adjusting module 54 can be in running background, carry out the repeatedly adjustment of original intensity appraising model according to the default time interval, certain interval of time upgrades the brightness appraising model after adjusting, and can improve brightness under the prerequisite that does not affect brightness estimation efficient and detect the precision of proofreading and correct.
In a preferred embodiment, it is on duty with described alignment error that described adjusting module also is used for maximum original intensity value and minimum original intensity that each described current value of described original intensity appraising model is corresponding, obtains the brightness appraising model after the described adjustment; Comparison module 53 is fallen into a trap to let it pass and is adjusted current value at the ratio of the mean value that obtains after the repeated detection with brightness value corresponding in described original intensity appraising model, accordingly corresponding maximum original intensity value and the minimum original intensity value of each current value that records in the data list multiplied each other with this ratio, thereby realized reducing the purpose of the error of original intensity appraising model, obtained the brightness appraising model after the adjustment of degree of precision.
In a preferred embodiment, described output module 55 also is used for:
The brightness estimation interval that the brightness value that detects under the current current value is corresponding with current current value in the brightness appraising model after described adjustment compares;
If in the brightness that current current value is corresponding in the brightness appraising model of the brightness value that gets access under the current current value after the described adjustment estimation interval, then export the brightness value that detects under the described current current value;
If the brightness value that gets access under the current current value greater than maximum brightness value corresponding to current current value in the brightness appraising model after described adjustment, is then exported maximum brightness value corresponding to current current value in the described brightness appraising model after described adjustment;
If the brightness value that gets access under the current current value less than minimum luminance value corresponding to current current value in the brightness appraising model after described adjustment, is then exported minimum luminance value corresponding to current current value in the described brightness appraising model after described adjustment.
The brightness of projector of the present invention detects bearing calibration and system, detect the higher average brightness of precision that obtains by under the adjustment current value of presetting, carrying out repeatedly brightness, relatively should adjust brightness value corresponding to current value in this average brightness and the original intensity appraising model, the original intensity appraising model that error is larger is adjusted, obtain the brightness appraising model after the less adjustment of error, the brightness value of detection can be proofreaied and correct rear output according to this model; The average brightness that the present invention is based on repeated detection has been adjusted the original intensity appraising model, and the effective error rate of Dimming valuation has improved the precision of brightness value and implementation procedure Simple fast.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the brightness of a projector detects bearing calibration, it is characterized in that, comprises the steps:
Obtain the original intensity appraising model of projector, comprise each current value and corresponding brightness estimation interval thereof in the described original intensity appraising model;
Under default adjustment current value, carry out repeatedly brightness and detect, obtain corresponding a plurality of adjustment brightness values, ask for the mean value of a plurality of adjustment brightness values;
The size of the midrange that the corresponding brightness estimation in described original intensity appraising model of the mean value of more described a plurality of adjustment brightness values and described adjustment current value is interval is adjusted error;
Adjust the brightness estimation that each current value is corresponding in the described original intensity appraising model according to described alignment error interval, the brightness appraising model after being adjusted;
According to the brightness appraising model after the described adjustment, the brightness value that detects is proofreaied and correct rear output.
2. the brightness of projector according to claim 1 detects bearing calibration, it is characterized in that, described original intensity appraising model is data list, each described current value and corresponding maximum original intensity value and minimum original intensity value thereof are stored in described data list, and it is interval that the maximum original intensity value that each described current value is corresponding and minimum original intensity value consist of brightness estimation corresponding to each described current value.
3. the brightness of projector according to claim 2 detects bearing calibration, it is characterized in that, the size of the midrange that the corresponding brightness estimation in described original intensity appraising model of the mean value of described a plurality of adjustment brightness values and described adjustment current value is interval, the step that is adjusted error is:
With the midrange in described adjustment current value corresponding brightness estimation interval in described original intensity appraising model, divided by the mean value of described a plurality of adjustment brightness values, the ratio that obtains is as described alignment error.
4. the brightness of projector according to claim 3 detects bearing calibration, it is characterized in that, described to adjust each current value is corresponding in the described original intensity appraising model brightness estimation according to described alignment error interval, and the step of the brightness appraising model after being adjusted is:
Maximum original intensity value and minimum original intensity that each described current value in the described original intensity appraising model is corresponding are on duty with described alignment error, obtain the brightness appraising model after the described adjustment.
5. according to claim 2 to the brightness detection bearing calibration of 4 each described projectors, it is characterized in that, described according to the brightness appraising model after the described adjustment, the step of the brightness value that detects being proofreaied and correct rear output is:
The brightness estimation interval that the brightness value that detects under the current current value is corresponding with current current value in the brightness appraising model after described adjustment compares;
If in the brightness that current current value is corresponding in the brightness appraising model of the brightness value that gets access under the current current value after the described adjustment estimation interval, then export the brightness value that detects under the described current current value;
If the brightness value that gets access under the current current value greater than maximum brightness value corresponding to current current value in the brightness appraising model after described adjustment, is then exported maximum brightness value corresponding to current current value in the described brightness appraising model after described adjustment;
If the brightness value that gets access under the current current value less than minimum luminance value corresponding to current current value in the brightness appraising model after described adjustment, is then exported minimum luminance value corresponding to current current value in the described brightness appraising model after described adjustment.
6. the brightness of a projector detects corrective system, it is characterized in that, comprising:
Acquisition module, what be used for projector obtains the original intensity appraising model, comprises in the described original intensity appraising model that each current value and corresponding brightness estimation thereof are interval;
Ask for module, be used under default adjustment current value, carrying out repeatedly brightness and detect, obtain corresponding a plurality of adjustment brightness values, ask for the mean value of a plurality of adjustment brightness values;
Comparison module is used for the mean value of more described a plurality of adjustment brightness values and described adjustment current value is estimated interval midrange in brightness corresponding to described original intensity appraising model size, is adjusted error;
Adjusting module is used for adjusting brightness estimation corresponding to described each current value of original intensity appraising model according to described alignment error interval, the brightness appraising model after being adjusted;
Output module is used for according to the brightness appraising model after the described adjustment, and the brightness value that detects is proofreaied and correct rear output.
7. the brightness of projector according to claim 6 detects corrective system, it is characterized in that, described original intensity appraising model in the described acquisition module is data list, each described current value and corresponding maximum original intensity value and minimum original intensity value thereof are stored in described data list, and it is interval that the maximum original intensity value that each described current value is corresponding and minimum original intensity value consist of brightness estimation corresponding to each described current value.
8. the brightness of projector according to claim 7 detects corrective system, it is characterized in that, described comparison module also is used for: with the midrange of described adjustment current value in brightness estimation interval corresponding to described original intensity appraising model, divided by the mean value of described a plurality of adjustment brightness values, the ratio that obtains is as described alignment error.
9. the brightness of projector according to claim 8 detects corrective system, it is characterized in that, it is on duty with described alignment error that described adjusting module also is used for maximum original intensity value and minimum original intensity that each described current value of described original intensity appraising model is corresponding, obtains the brightness appraising model after the described adjustment.
10. according to claim 7 to the brightness detection corrective system of 9 each described projectors, it is characterized in that, described output module also is used for:
The brightness estimation interval that the brightness value that detects under the current current value is corresponding with current current value in the brightness appraising model after described adjustment compares;
If in the brightness that current current value is corresponding in the brightness appraising model of the brightness value that gets access under the current current value after the described adjustment estimation interval, then export the brightness value that detects under the described current current value;
If the brightness value that gets access under the current current value greater than maximum brightness value corresponding to current current value in the brightness appraising model after described adjustment, is then exported maximum brightness value corresponding to current current value in the described brightness appraising model after described adjustment;
If the brightness value that gets access under the current current value less than minimum luminance value corresponding to current current value in the brightness appraising model after described adjustment, is then exported minimum luminance value corresponding to current current value in the described brightness appraising model after described adjustment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310248520.XA CN103323218B (en) | 2013-06-20 | 2013-06-20 | The brightness of projector detects bearing calibration and system |
| PCT/CN2013/089096 WO2014201813A1 (en) | 2013-06-20 | 2013-12-11 | Luminance detection and correction method and system of projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310248520.XA CN103323218B (en) | 2013-06-20 | 2013-06-20 | The brightness of projector detects bearing calibration and system |
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| CN103323218A true CN103323218A (en) | 2013-09-25 |
| CN103323218B CN103323218B (en) | 2016-04-13 |
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| WO (1) | WO2014201813A1 (en) |
Cited By (6)
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| CN104023209A (en) * | 2014-06-12 | 2014-09-03 | 浙江宇视科技有限公司 | Method and device of self-adaptive video diagnosis |
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| CN105911807A (en) * | 2016-06-03 | 2016-08-31 | 青岛海信电器股份有限公司 | Laser projection method and laser projector |
| CN106597788A (en) * | 2016-12-15 | 2017-04-26 | 广东威创视讯科技股份有限公司 | Color channel adjustment, light source brightness adjustment, splicing wall brightness method and system |
| CN110031186A (en) * | 2019-05-17 | 2019-07-19 | 歌尔股份有限公司 | Projector ray machine test macro and method |
| CN110769231A (en) * | 2019-08-02 | 2020-02-07 | 成都极米科技股份有限公司 | Projection picture light uniformity control method and control system based on trapezoidal correction |
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| WO2014201813A1 (en) * | 2013-06-20 | 2014-12-24 | 广东威创视讯科技股份有限公司 | Luminance detection and correction method and system of projector |
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| CN106597788B (en) * | 2016-12-15 | 2018-07-10 | 广东威创视讯科技股份有限公司 | Adjusting, light-source brightness adjusting, combination brightness method and the system of Color Channel |
| CN110031186A (en) * | 2019-05-17 | 2019-07-19 | 歌尔股份有限公司 | Projector ray machine test macro and method |
| CN110769231A (en) * | 2019-08-02 | 2020-02-07 | 成都极米科技股份有限公司 | Projection picture light uniformity control method and control system based on trapezoidal correction |
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| Publication number | Publication date |
|---|---|
| CN103323218B (en) | 2016-04-13 |
| WO2014201813A1 (en) | 2014-12-24 |
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