CN106502031A - Range finding, focusing process method and device - Google Patents
Range finding, focusing process method and device Download PDFInfo
- Publication number
- CN106502031A CN106502031A CN201510564692.7A CN201510564692A CN106502031A CN 106502031 A CN106502031 A CN 106502031A CN 201510564692 A CN201510564692 A CN 201510564692A CN 106502031 A CN106502031 A CN 106502031A
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- Prior art keywords
- curtain
- making
- light source
- grey decision
- distance
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
-
- 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
- G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
Abstract
The invention discloses a kind of range finding, focusing process method and device, wherein, the method includes：Obtain the grey decision-making for projecting to that the projection light source at curtain is produced；Determine that this projects to that the distance of curtain is interval or distance from predetermined mapping table according to the grey decision-making, wherein, the mapping table be the grey decision-making of the projection light source and this project to the mapping table between the distance of curtain；Distance interval for projecting to curtain or distance according to determining carries out focusing process, solve the problems, such as in correlation technique, to need the range unit of additional specialty to carry out focusing causing high cost, in the case where extra range finding cost is not increased, focusing speed is improve.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of range finding, focusing process method and device.
Background technology
Traditional projector automatic focusing, needs the form for moving motor and catching image by photographic head to be scanned, with
Search most clearly position.A motor is moved often, is needed to wait motor stable, then is waited picture synchronization signal, then
Capture, carries out image procossing.So, piece image can only be taken per frame.Due to needing to scan, focusing speed is slower.
On stream, find the distance that projector distance metope and curtain is not known when automatic focusing, need to scan
Whole motor stroke finds most clearly point, and focusing time is wanted as many as 3-5 seconds, had a strong impact on Consumer's Experience.
The range unit of additional specialty is needed in correlation technique, and such as infrared distance measurement, laser ranging need specialty
Receiving device, needs the process chip of specialty, complex structure, high cost.
Carrying out focusing for the range unit for needing additional specialty in correlation technique causes the problem of high cost, does not also carry
Go out effective solution.
Content of the invention
The invention provides a kind of range finding, focusing process method and device, additionally attached at least to solve to need in correlation technique
Plus the range unit of specialty carries out focusing and causes the problem of high cost.
According to an aspect of the invention, there is provided a kind of focusing process method, including：Acquisition projects to the throwing at curtain
The grey decision-making that shadow light source is produced；Project to according to the grey decision-making is determined from predetermined mapping table curtain away from
From interval or with a distance from, wherein, the mapping table be the grey decision-making of the projection light source and the distance for projecting to curtain it
Between mapping table；The distance interval or distance for projecting to curtain according to determining carries out focusing process.
Further, obtain and project to the grey decision-making that the projection light source at curtain produces and include：Acquisition projects to curtain
The grey decision-making that the environment light source at place is produced；Obtain after the ambient light and the projection light source projected at curtain is superimposed and produce
Raw grey decision-making；The grey decision-making produced after the ambient light and projection light source superposition is deducted the environment light source to produce
Grey decision-making obtain the grey decision-making for projecting to that the projection light source at curtain is produced.
Further, methods described also includes：Obtained according to the different distance for projecting to curtain respectively and project to curtain
The grey decision-making that the projection light source at place is produced；The grey decision-making that the projection light source according to obtaining is produced determines the mapping
Table.
Further, methods described also includes：Determine the mapping table under different patterns, wherein, described different
Pattern includes the projection light source of different lumens and/or different colours.
Further, project to described in determined from the predetermined mapping table according to the grey decision-making curtain away from
From interval or with a distance from before, methods described also includes：Mapping according to the pattern of the projection light source under different patterns
The mapping table under the pattern is determined in table.
According to a further aspect in the invention, there is provided a kind of distance-finding method, including：Acquisition projects to the projected light at curtain
The grey decision-making that source produces；The distance regions of curtain are projected to according to the grey decision-making is determined from predetermined mapping table
Between or distance, wherein, the mapping table is between the grey decision-making of the projection light source and the distance for projecting to curtain
Mapping table.
Further, obtain and project to the grey decision-making that the projection light source at curtain produces and include：Acquisition projects to curtain
The grey decision-making that the environment light source at place is produced；Obtain after the ambient light and the projection light source projected at curtain is superimposed and produce
Raw grey decision-making；The grey decision-making produced after the ambient light and projection light source superposition is deducted the environment light source to produce
Grey decision-making obtain the grey decision-making for projecting to that the projection light source at curtain is produced.
Further, methods described also includes：Obtained according to the different distance for projecting to curtain respectively and project to curtain
The grey decision-making that the projection light source at place is produced；The grey decision-making that the projection light source according to obtaining is produced determines the mapping
Table.
According to a further aspect in the invention, there is provided a kind of focusing process device, including：Acquisition module, throws for obtaining
The grey decision-making that projection light source at shadow to curtain is produced；Determining module, for reflecting from predetermined according to the grey decision-making
Distance interval or the distance of curtain is projected to described in determining in firing table, and wherein, the mapping table is the ash of the projection light source
Mapping table between rank value and the distance for projecting to curtain；Focusing module, for projecting to curtain according to determining
The distance of cloth is interval or distance carries out focusing process.
According to a further aspect in the invention, a kind of range unit is additionally provided, including：Acquisition module, for obtaining projection
The grey decision-making that projection light source at curtain is produced；Determining module, for according to the grey decision-making from predetermined mapping
Distance interval or the distance of curtain is projected to described in determining in table, and wherein, the mapping table is the GTG of the projection light source
Mapping table between value and the distance for projecting to curtain.
In accordance with a further aspect of the present invention, there is provided a kind of projector, including：Light-emitting device, for producing projection light source；
Photographic head, shoots for projecting to the image of curtain to the projection light source；Processor, photographs for basis
Picture obtains the grey decision-making for projecting to that the projection light source at curtain is produced, according to the grey decision-making from predetermined mapping table
Distance interval or the distance of curtain is projected to described in middle determination, and wherein, the mapping table is the grey decision-making of the projection light source
With the mapping table between the distance for projecting to curtain；Distance interval or the distance of curtain is projected to according to determining
Carry out focusing process.
By the present invention, the grey decision-making that the projection light source at curtain is produced is projected to using acquisition；According to the grey decision-making from
Distance interval or the distance of curtain is projected to described in determining in predetermined mapping table, and wherein, the mapping table is described
Mapping table between the grey decision-making of projection light source and the distance for projecting to curtain；Curtain is projected to according to determining
Distance interval or distance carries out focusing process, solving needs the range unit of additional specialty to carry out in correlation technique
Focusing causes the problem of high cost, in the case where extra range finding cost is not increased, improves focusing speed.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention
Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart one of focusing process method according to embodiments of the present invention；
Fig. 2 is the according to embodiments of the present invention schematic diagram being projected in by projection light source on curtain；
Fig. 3 is the schematic diagram of the grey decision-making of ambient light according to embodiments of the present invention and projection light source；
Fig. 4 is the flowchart 2 of focusing process method according to embodiments of the present invention；
Fig. 5 is the block diagram one of focusing process device according to embodiments of the present invention；
Fig. 6 is the block diagram two of focusing process device according to embodiments of the present invention.
Specific embodiment
Below with reference to accompanying drawing and in conjunction with the embodiments describing the present invention in detail.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
A kind of focusing process method is embodiments provided, Fig. 1 is focusing process method according to embodiments of the present invention
Flow chart one, as shown in figure 1, including：
Step S102, obtains the grey decision-making for projecting to that the projection light source at curtain is produced；
Step S104, according to the grey decision-making determine from predetermined mapping table this project to the distance of curtain interval or
Distance, wherein, the mapping table be the grey decision-making of the projection light source and this project to the mapping table between the distance of curtain；
Step S106, carries out focusing process according to the distance interval for projecting to curtain or distance for determining.
By above-mentioned steps, the grey decision-making for projecting to that the projection light source at curtain is produced is obtained；According to the grey decision-making from advance
Determine in the mapping table of determination that this projects to the distance of curtain interval or distance, wherein, the mapping table is the projection light source
Grey decision-making and this project to mapping table between the distance of curtain, grey decision-making is a kind of means for quantifying brightness, but not
It is the sole mode for judging brightness.Grey decision-making is a kind of embodiment mode of brightness；According to determine this project to curtain away from
From interval or with a distance from carry out focusing process, solving needs the range unit of additional specialty to be focused in correlation technique
Cause the problem of high cost, in the case where extra range finding cost is not increased, improve focusing speed.
Further, obtain and project to the grey decision-making that the projection light source at curtain produces and can include：Acquisition projects to curtain
The grey decision-making that environment light source at cloth is produced；Obtain after the ambient light and the projection light source projected at curtain is superimposed and produce
Grey decision-making；The grey decision-making produced after the ambient light and projection light source superposition is deducted the grey decision-making that the environment light source is produced
Obtain the grey decision-making for projecting to that the projection light source at curtain is produced.
Fig. 2 is the according to embodiments of the present invention schematic diagram being projected in by projection light source on curtain, as shown in Fig. 2
The picture of the different distance gathered in the case of ambient light interference, picture center are that the brightness of projection adds ambient light, and surrounding
It is ambient light.
Fig. 3 is the schematic diagram of the grey decision-making of ambient light according to embodiments of the present invention and projection light source, as shown in figure 3, per
The gray scale histogram for opening photo has two than larger spike, the GTG Distribution value and environment of difference representative picture ambient light
Light be superimposed with projection light source after GTG Distribution value, the rectangular histogram of grey decision-making is in two independent normal distributions, in normal state point
The center of cloth can obtain typical brightness value, i.e., determine in the value for just taking very much the corresponding abscissa of peak in scattergram
For typical brightness value, wherein, peak represents that the number of times in the grey decision-making is most, it is assumed that ambient light typical case's grey decision-making
For B1, it is B2 that ambient light adds the typical grey decision-making of projected light, then the grey decision-making that projection light source is produced is equal to B2-B1,
The B2-B1 obtained after being quantified by grey decision-making can be compensated to the interference that ambient light is produced.Under different distances
The value of B2-B1 is bigger in distance and less, value of the change of distance to B2-B1 when distance is nearer on overall trend
Impact bigger.Further, the GTG Value Data that closes under illuminating lamp and opening illuminating lamp can also be tested respectively, right
The grey decision-making that projection light source obtained above is produced is verified.
Further, obtain the projection light source projected at curtain respectively to produce according to the different distance for projecting to curtain
Grey decision-making, the distance of curtain can be projected to from the first preset distance in the second preset distance at this, choose the projection
Different distance to curtain obtains the grey decision-making that projects to that the projection light source at curtain is produced respectively, for example, it is possible to
Value is carried out between 50cm to 300cm, takes distance respectively for 66cm, 90cm, 120cm, 153cm, 183cm,
266cm, it should be noted that distance arbitrarily can be arranged, the more short number of times that tests in interval is more, subsequently according to B2-B1
The distance of determination is interval can be less, is more beneficial for the efficiency for improving focusing；The GTG that the projection light source according to obtaining is produced
Value determines the mapping table.
In an optional embodiment, it may be determined that the mapping table under different patterns, wherein, the different pattern
Including different lumens and/or the projection light source of different colours, for example, pattern one is 100LM, and the color of projection light source is
White；Pattern two is 200LM, and projection light source is blueness etc..In addition, can be in any face when determining mapping table
In the projected picture of color, white picture is it is not absolutely required to, can be user-defined any picture.
Further, determining that this projects to the distance of curtain interval from the predetermined mapping table according to the grey decision-making
Or distance is before, determines the pattern of projection light source, in the mapping table according to the pattern of the projection light source under different patterns
Determine the mapping table under the pattern, for example, the pattern of projection light source is above-mentioned pattern one, then true in pretreatment stage
Pattern mapping table once is determined in fixed all mapping tables.
The embodiment of the present invention additionally provides a kind of distance-finding method, and Fig. 4 is focusing process method according to embodiments of the present invention
Flowchart 2, as shown in figure 4, including：
Step S102, obtains the grey decision-making for projecting to that the projection light source at curtain is produced；
Step S104, according to the grey decision-making determine from predetermined mapping table this project to the distance of curtain interval or
Distance, wherein, the mapping table be the grey decision-making of the projection light source and this project to the mapping table between the distance of curtain.
By above-mentioned steps, on the product with photographic head, it is not necessary to which the range unit of additional professional can just be completed just
Pacing is away from completing junior range.
Further, obtain and project to the grey decision-making that the projection light source at curtain produces and include：Acquisition is projected at curtain
Environment light source produce grey decision-making；Obtain the ash produced after the ambient light and the projection light source projected at curtain is superimposed
Rank is worth；The grey decision-making produced after the ambient light and projection light source superposition is deducted the grey decision-making acquisition that the environment light source is produced
Project to the grey decision-making that the projection light source at curtain is produced.
Further, obtain the projection light source projected at curtain respectively to produce according to the different distance for projecting to curtain
Grey decision-making, the distance of curtain can be projected to from the first preset distance in the second preset distance at this, choose the projection
Different distance to curtain obtains the grey decision-making that projects to that the projection light source at curtain is produced respectively；According to the throwing for obtaining
The grey decision-making that shadow light source is produced determines the mapping table.
A kind of focusing process device is embodiments provided, Fig. 5 is focusing process device according to embodiments of the present invention
Block diagram one, as shown in figure 5, including：
Acquisition module 52, for obtaining the grey decision-making for projecting to that the projection light source at curtain is produced；
Determining module 54, for determined from predetermined mapping table according to grey decision-making the distance that projects to curtain interval or
Distance, wherein, mapping table for projection light source grey decision-making and project to curtain distance between mapping table；
Focusing module 56, for carrying out focusing process according to the distance interval for projecting to curtain or distance for determining.
The embodiment of the present invention additionally provides a kind of range unit, and Fig. 6 is focusing process device according to embodiments of the present invention
Block diagram two, as shown in fig. 6, including：
Acquisition module 52, for obtaining the grey decision-making for projecting to that the projection light source at curtain is produced；
According to the grey decision-making, determining module 54, for determining that from predetermined mapping table this projects to the distance regions of curtain
Between or distance, wherein, the mapping table be the grey decision-making of the projection light source and this project to the mapping table between the distance of curtain.
The embodiment of the present invention additionally provides a kind of projector, including：Light-emitting device, for producing projection light source；Photographic head,
Shoot for projecting to the image of curtain to the projection light source；Processor, throws for being obtained according to the picture for photographing
The grey decision-making that projection light source at shadow to curtain is produced, determines the projection from predetermined mapping table according to the grey decision-making
Distance to curtain is interval or distance, wherein, the mapping table be the projection light source grey decision-making with this project to curtain away from
Mapping table between；Distance interval for projecting to curtain or distance according to determining carries out focusing process.
The light-emitting device of projection produces projection light source, and light focusing is imaged on curtain, and the projector with camera focusing leads to
Cross photographic head and obtain projected picture.Having on the conventional equipment of photographic head, if necessary to junior range, need to increase auxiliary
Help light source.On a projector for having photographic head auto-focusing, because projector itself automatic light source, is not required to
Increase any hardware cost.
Above-mentioned projector can also provide a U/I interface button, when carrying out pretreatment and determining mapping table,
U/I interface button is clicked on, the projectorservice layers of framework receive test instruction, and pass through local interface (Java native
Interface Java, referred to as JNI) call projection driver, projection to open and be operated in 100LM patterns.
Projectorservice calls automatic focusing module by JNI, allows motor to move to region 1.Projectorservice drives
Photographic head, with specific light sensitivitys ISO, aperture, shutter sampled data, and is converted into GTG value histogram, obtains straight
The data of side figure B2-B1, and recorded in mapping table.The N number of region of repetitive operation is simultaneously recorded.In 200LM moulds
Said process is come again under formula, it is possible to obtain the mapping table under 200LM.
When triggering auto-focusing, projectorservice monitors to be currently 200LM.Projectorservice control projections
Projection white light, projectorservice are found and are previously obtained by the data of photographic head acquisition rectangular histogram B2-B1
Mapping table under 200LM, white light, the distance areas section for drawing grey decision-making in the table of tabling look-up.Projectorservice will
Motor areas end data notifies automatic focusing module, starts to be scanned in this region and find most clearly picture.
By above-mentioned projector, it is possible to achieve quick auxiliary focusing, in the case where extra range finding cost is not increased, fully
The effect for playing photographic head improves focusing speed, for carrying out junior range before scanning, is substantially determining projector distance curtain
After the distance of cloth, motor only needs to the distance calculated in junior range or carries out traditional scanning motion in distance interval,
Sweep limitss only need to control in the maximum of junior range error, can improve scanning accuracy in effective scope,
So the accuracy (being presented as the definition of projection) of focusing speed and focusing result can be improved.
Obviously, those skilled in the art should be understood that each module or each step of the above-mentioned present invention can be with general
Realizing, they can concentrate on single computing device computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to by they
Storage is executed by computing device in the storage device, and in some cases, can be held with the order being different from herein
The shown or described step of row, or they are fabricated to each integrated circuit modules respectively, or will be many in them
Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware
Combine with software.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the technology of this area
For personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any
Modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (11)
1. a kind of focusing process method, it is characterised in that include：
Obtain the grey decision-making for projecting to that the projection light source at curtain is produced；
Project to according to the grey decision-making is determined from predetermined mapping table curtain distance interval or away from
From wherein, the mapping table is reflecting between the grey decision-making of the projection light source and the distance for projecting to curtain
Firing table；
The distance interval or distance for projecting to curtain according to determining carries out focusing process.
2. method according to claim 1, it is characterised in that obtain the projection light source projected at curtain and produce
Grey decision-making include：
Obtain the grey decision-making for projecting to that the environment light source at curtain is produced；
Obtain the grey decision-making produced after the ambient light and the projection light source projected at curtain is superimposed；
The grey decision-making produced after the ambient light and projection light source superposition is deducted what the environment light source was produced
Grey decision-making obtains the grey decision-making for projecting to that the projection light source at curtain is produced.
3. method according to claim 1 and 2, it is characterised in that methods described also includes：
Obtain the projection light source projected at curtain respectively to produce according to the different distance for projecting to curtain
Grey decision-making；
The grey decision-making that the projection light source according to obtaining is produced determines the mapping table.
4. method according to claim 3, it is characterised in that methods described also includes：
Determine the mapping table under different patterns, wherein, the different pattern include different lumens and/or
The projection light source of different colours.
5. method according to claim 4, it is characterised in that described reflected from predetermined according to the grey decision-making
The distance interval of curtain is projected to described in determining in firing table or apart from before, methods described also includes：
The mapping under the pattern is determined in mapping table according to the pattern of the projection light source under different patterns
Table.
6. a kind of distance-finding method, it is characterised in that include：
Obtain the grey decision-making for projecting to that the projection light source at curtain is produced；
Project to according to the grey decision-making is determined from predetermined mapping table curtain distance interval or away from
From wherein, the mapping table is reflecting between the grey decision-making of the projection light source and the distance for projecting to curtain
Firing table.
7. method according to claim 6, it is characterised in that obtain the projection light source projected at curtain and produce
Grey decision-making include：
Obtain the grey decision-making for projecting to that the environment light source at curtain is produced；
Obtain the grey decision-making produced after the ambient light and the projection light source projected at curtain is superimposed；
The grey decision-making produced after the ambient light and projection light source superposition is deducted what the environment light source was produced
Grey decision-making obtains the grey decision-making for projecting to that the projection light source at curtain is produced.
8. the method according to claim 6 or 7, it is characterised in that methods described also includes：
Obtain the projection light source projected at curtain respectively to produce according to the different distance for projecting to curtain
Grey decision-making；
The grey decision-making that the projection light source according to obtaining is produced determines the mapping table.
9. a kind of focusing process device, it is characterised in that include：
Acquisition module, for obtaining the grey decision-making for projecting to that the projection light source at curtain is produced；
Determining module, for projecting to curtain described in determining from predetermined mapping table according to the grey decision-making
Distance interval or distance, wherein, the mapping table is that the grey decision-making of the projection light source projects to curtain with described
Mapping table between distance；
Focusing module, the distance for projecting to curtain according to determining is interval or distance carries out focusing process.
10. a kind of range unit, it is characterised in that include：
Acquisition module, for obtaining the grey decision-making for projecting to that the projection light source at curtain is produced；
Determining module, for projecting to curtain described in determining from predetermined mapping table according to the grey decision-making
Distance interval or distance, wherein, the mapping table is that the grey decision-making of the projection light source projects to curtain with described
Mapping table between distance.
11. a kind of projectors, it is characterised in that include：
Light-emitting device, for producing projection light source；
Photographic head, shoots for projecting to the image of curtain to the projection light source；
Processor, for obtaining the grey decision-making for projecting to that the projection light source at curtain is produced according to the picture for photographing,
Distance interval or the distance of curtain is projected to according to the grey decision-making is determined from predetermined mapping table, its
In, the mapping table is the mapping table between the grey decision-making of the projection light source and the distance for projecting to curtain；
The distance interval or distance for projecting to curtain according to determining carries out focusing process.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510564692.7A CN106502031A (en) | 2015-09-07 | 2015-09-07 | Range finding, focusing process method and device |
| PCT/CN2015/093609 WO2016145872A1 (en) | 2015-09-07 | 2015-11-02 | Distance measurement and focusing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510564692.7A CN106502031A (en) | 2015-09-07 | 2015-09-07 | Range finding, focusing process method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106502031A true CN106502031A (en) | 2017-03-15 |
Family
ID=56918281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510564692.7A Withdrawn CN106502031A (en) | 2015-09-07 | 2015-09-07 | Range finding, focusing process method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106502031A (en) |
| WO (1) | WO2016145872A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873241A (en) * | 2018-09-06 | 2018-11-23 | 广东万濠精密仪器股份有限公司 | A kind of rapid focus measurement method |
| TWI736971B (en) * | 2019-08-23 | 2021-08-21 | 中強光電股份有限公司 | Projection device and method for adjusting brightness thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0823501A (en) * | 1994-07-11 | 1996-01-23 | Fujitsu General Ltd | Projection type picture display device |
| CN101281289A (en) * | 2007-12-29 | 2008-10-08 | 青岛海信电器股份有限公司 | Automatic focusing method |
| CN101806895A (en) * | 2009-02-17 | 2010-08-18 | 宏碁股份有限公司 | Distance measurement system and method |
| CN103313007A (en) * | 2012-03-08 | 2013-09-18 | 精工爱普生株式会社 | Image processing apparatus, projector and control method of projector |
| CN103782232A (en) * | 2011-08-18 | 2014-05-07 | 株式会社理光 | Projector and control method thereof |
-
2015
- 2015-09-07 CN CN201510564692.7A patent/CN106502031A/en not_active Withdrawn
- 2015-11-02 WO PCT/CN2015/093609 patent/WO2016145872A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0823501A (en) * | 1994-07-11 | 1996-01-23 | Fujitsu General Ltd | Projection type picture display device |
| CN101281289A (en) * | 2007-12-29 | 2008-10-08 | 青岛海信电器股份有限公司 | Automatic focusing method |
| CN101806895A (en) * | 2009-02-17 | 2010-08-18 | 宏碁股份有限公司 | Distance measurement system and method |
| CN103782232A (en) * | 2011-08-18 | 2014-05-07 | 株式会社理光 | Projector and control method thereof |
| CN103313007A (en) * | 2012-03-08 | 2013-09-18 | 精工爱普生株式会社 | Image processing apparatus, projector and control method of projector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873241A (en) * | 2018-09-06 | 2018-11-23 | 广东万濠精密仪器股份有限公司 | A kind of rapid focus measurement method |
| TWI736971B (en) * | 2019-08-23 | 2021-08-21 | 中強光電股份有限公司 | Projection device and method for adjusting brightness thereof |
| US11218674B2 (en) | 2019-08-23 | 2022-01-04 | Coretronic Corporation | Projection device and brightness adjusting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016145872A1 (en) | 2016-09-22 |
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