CN109302595A - A kind of Atomatic focusing method and projection device of hotel's projection device - Google Patents
A kind of Atomatic focusing method and projection device of hotel's projection device Download PDFInfo
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- CN109302595A CN109302595A CN201811265497.4A CN201811265497A CN109302595A CN 109302595 A CN109302595 A CN 109302595A CN 201811265497 A CN201811265497 A CN 201811265497A CN 109302595 A CN109302595 A CN 109302595A
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- image
- curtain
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- coordinate
- projection device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/317—Convergence or focusing systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention relates to the Atomatic focusing methods and projection device of a kind of hotel's projection device, the present invention identifies the size of painting canvas using camera combination image processing unit, the distance for obtaining projection by laser emitter again receives the size for the projection painting canvas that image processing unit is sent by controller unit and controls the lens driving unit for adjusting the focal length of the projection lens group.Auto-focusing and projection may be implemented in the present invention, and the present invention can choose suitable canvas size during projection, after focusing, can be projected in picture on curtain completely, without departing from the range of curtain.
Description
Technical field
The present invention relates to the Atomatic focusing method of a kind of projection device focusing technical field, especially projection device and projections
Equipment.
Background technique
Need often to use projection device in hotel's meeting room, when using projection device, for make projection with
Clearly image is shown on curtain, then needs that the focal length of projection device is adjusted.
In the prior art, it when the focal length of projection device being adjusted, is mostly carried out, i.e., is broadcast required using manual mode
After on the image projecting to curtain put, judged by clarity of the human eye to the image on curtain, and is adjusted according to judgement
The focal length of projection device, and adjust with this clarity of image on curtain.
Use demand based on most users, existing projection device will take into account the clear of projection picture in terms of auto-focusing
Clear degree and focal adjustment time, thus all more singular unique use demand of user of focusing mode of existing projection device, than
Such as, for the user for pursuing time efficiency, fall into a long wait and be difficult to receive, and for pursuing projection image display effect
For the user of fruit, projection image is not enough clearly also to be difficult to receive.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of Atomatic focusing method of hotel's projection device and
Projection device.
Technical scheme is as follows:
A kind of auto-focusing projection device characterized by comprising
Camera shoots image towards curtain；
Image processing unit obtains the picture of camera shooting, handles the picture, identify curtain in the picture of shooting
Four corner coordinates, and determine according to four coordinates the size of projection painting canvas；
Projection lens group is used for image projection to curtain；
Lens driving unit, for adjusting the focal length of projection lens group；
Controller unit, for receiving the size of the projection painting canvas of image processing unit transmission and controlling the lens driving unit
For adjusting the focal length of the projection lens group.
Further, described image processing unit include gray scale adjustment module, gray scale comparison module, coordinate determining module,
Painting canvas determining module；
The gray scale adjustment module is adjusted to grayscale mode according to the image of acquisition, and the pixel value of image is adjusted to
The range of 1500*1500 ~ 5000*5000；
The gray scale comparison module, the gray value of the pixel on image obtained for identification, and according to the ash of different pictures
The difference of angle value identifies the range of curtain on the image；
The coordinate determining module obtains four corners of curtain image according to the curtain image that the gray scale comparison module obtains
The coordinate of point；
The painting canvas determining module makes lateral straight line of the X to, Y-direction according to the four of acquisition coordinates on each coordinate,
By a plurality of X that four coordinates surround, into the rectangle of, Y-direction transverse direction rectilinear(-al), to be determined as painting canvas big for a smallest rectangular image
It is small, and record four new coordinates in corner for realizing the painting canvas.
It further, further include laser emitter, the laser emitter is described for measuring for emitting the fast laser of shifting
The distance at painting canvas center.
It further, further include storage unit, the storage unit connects the controller unit, for storing image letter
Breath and ranging information.
It further, further include that automatic horizontal adjusts unit and for adjusting the horizontal position of projection device itself makes its position
In on horizontal plane.
A kind of Atomatic focusing method of projection device, which is characterized in that the Atomatic focusing method of the projection device includes:
Image is obtained, shoots image towards curtain using camera；
Image procossing is obtained the picture of camera shooting using image processing unit, handles the picture, identify shooting
Picture in curtain four corner coordinates, and determine according to four coordinates the size of projection painting canvas；
Focus adjustment receives the size for the projection painting canvas that image processing unit is sent by controller and controls lens driving unit
For adjusting the focal length of the projection lens group.
Further, in the figure in processing specifically:
Gray scale is adjusted, and by the gray scale adjustment module in image processing unit, the image adjustment that will acquire is grayscale mode, and will
The pixel value of image is adjusted to the range of 1500*1500 ~ 5000*5000；
Gray scale compares, the gray scale of the pixel on image obtained by the gray scale comparison module identification in image processing unit
Value, and the range of curtain on the image is identified according to the difference of the gray value of different pictures；
Coordinate determines, obtains the curtain image that gray scale comparison module obtains by the coordinate determining module in image processing unit,
Obtain the coordinate of four corner points of curtain image；
Painting canvas determines, obtains four coordinates by the painting canvas determining module in image processing unit, makes X on each coordinate
To the lateral straight line of, Y-direction, by a plurality of X in four coordinates besieged city into the rectangle of, Y-direction transverse direction rectilinear(-al) a smallest square
Shape image is determined as canvas size, and records four new coordinates for realizing the painting canvas.
Further, the focus adjustment the specific steps are
It is used to measure the distance at the painting canvas center by laser transmitter projects laser and distance is sent to controller；
Four new coordinates are sent to controller；
Information controls the focal length that lens driving unit adjusts projection lens group to controller based on the received.
Further, the more specific gray value to obtain each pixel of the gray scale, compares each pixel
Gray value, the pixel within gray value difference 5% is classified as same set of pixels, the size of more same set of pixels, by picture
The most set of pixels of vegetarian refreshments is identified as curtain.
Further, the coordinate determines to be specially the coordinate value for obtaining each pixel of curtain, by coordinate value away from
The point nearest from origin and farthest o'clock are as two coordinate values；Then by curtain with the overturning of its central horizontal, then distance is obtained
The nearest point of origin and farthest o'clock are as two coordinate values；Four coordinates that will acquire are as four corner points of curtain image
Coordinate.
According to the above aspect of the present invention, the present invention has at least the following advantages:
Auto-focusing and projection may be implemented in the present invention, and the present invention can choose suitable canvas size during projection,
After focusing, picture can be projected on curtain completely, without departing from the range of curtain.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiment of the invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of projection device of the present invention；
Fig. 2 is the schematic diagram of present invention pixel collection；
Fig. 3 is the schematic diagram that the present invention obtains A, B coordinate；
Fig. 4 is the schematic diagram that the present invention obtains C, D coordinate；
Fig. 5 is the schematic diagram that the present invention obtains canvas size.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Referring to Fig. 1, a kind of projection device of auto-focusing described in a preferred embodiment of the present invention, including,
Camera shoots image towards curtain, which is fixed on projection device, can carry out remote control, is directed at curtain
A high-definition image is directly shot after cloth.
Image processing unit obtains the picture of camera shooting, handles the picture, identify in the picture of shooting
Four corner coordinates of curtain, and the size for projecting painting canvas is determined according to four coordinates；Described image processing unit includes gray scale
Adjustment module, gray scale comparison module, coordinate determining module, painting canvas determining module；The gray scale adjustment module, according to the figure of acquisition
Picture is adjusted to grayscale mode, and the pixel value of image is adjusted to the range of 1500*1500 ~ 5000*5000；The ash
Spend comparison module, the gray value of the pixel on image obtained for identification, and the difference of the gray value according to different pictures
Identify the range of curtain on the image；The coordinate determining module, according to the gray scale comparison module obtain curtain image,
Obtain the coordinate of four corner points of curtain image；The painting canvas determining module, according to the four of acquisition coordinates, in each coordinate
On make lateral straight line of the X to, Y-direction, a plurality of X that four coordinates are surrounded is the smallest into the rectangle of, Y-direction transverse direction rectilinear(-al)
One rectangular image is determined as canvas size, and records four new coordinates for realizing the painting canvas.
Projection lens group is used for image projection to curtain；
Lens driving unit, for adjusting the focal length of projection lens group；
Controller unit, for receiving the size of the projection painting canvas of image processing unit transmission and controlling the lens driving unit
For adjusting the focal length of the projection lens group.
It further include laser emitter, the laser emitter is for emitting the fast laser of shifting for measuring the painting canvas center
Distance.
It further include storage unit, the storage unit connects the controller unit, for storing image information and ranging
Information.
It further include that automatic horizontal adjusts unit and for adjusting the horizontal position of projection device itself is located at horizontal plane
On.Facilitate projection device to carry out original position to adjust.
The concrete operating principle of the present apparatus is to first pass through level regulation unit to adjust whole device to horizontal plane position,
It is taken pictures by camera image, the size of painting canvas is then identified by image processing unit and determines four seats of projection
Punctuate, then determined after by laser emitter, the projection broadcasting that focalizes is carried out finally by lens driving unit.
The invention also includes a kind of Atomatic focusing method of projection device, the Atomatic focusing method packet of the projection device
It includes:
Image is obtained, shoots image towards curtain using camera；
Image procossing is obtained the picture of camera shooting using image processing unit, handles the picture, identify shooting
Picture in curtain four corner coordinates, and determine according to four coordinates the size of projection painting canvas；
Image procossing specifically includes:
Gray scale is adjusted, and by the gray scale adjustment module in image processing unit, the image adjustment that will acquire is grayscale mode, and will
The pixel value of image is adjusted to the range of 1500*1500 ~ 5000*5000；After image adjustment is grayscale mode, meter can be convenient
Calculate the gray value of each pixel, and due to the gray value of not all right image difference, curtain continuous and gray value on the image
It is constant, therefore can be convenient and identify.
Gray scale compares, the ash of the pixel on image obtained by the gray scale comparison module identification in image processing unit
Angle value, and the range of curtain on the image is identified according to the difference of the gray value of different pictures；Gray scale is more specific for acquisition
The gray value of each pixel compares the gray value of each pixel, and the pixel within gray value difference 5% is sorted out
For same set of pixels, the most set of pixels of pixel is identified as curtain by the size of more same set of pixels.As shown in Fig. 2, can
To obtain the set of pixels of multiple and different gray values from image, when concrete operations, can by set of pixels less than 225 pictures
The set of pixels of element is directly deleted, since the area that curtain occupies in the picture is very big, can be convenient the picture that pixel is most
Element collection is directly as being identified as curtain.
Coordinate determines, obtains the curtain figure that gray scale comparison module obtains by the coordinate determining module in image processing unit
Picture obtains the coordinate of four corner points of curtain image；The coordinate determines to be specially the coordinate for obtaining each pixel of curtain
Value, by point nearest apart from origin in coordinate value and farthest o'clock as two coordinate values；Then by curtain with its central horizontal
Overturning, then the point nearest apart from origin and are obtained at farthest o'clock as two coordinate values；Four coordinates that will acquire are as curtain
The coordinate of four corner points of image.As shown in figure 3, curtain is placed into rectangular coordinate system, determine to origin recently and most
Two remote point A and B, as shown in figure 4, then with central point (coordinate points at A and B coordinate line center) flip horizontal in scheming
Afterwards, in rectangular coordinate system, then the two point Cs and D nearest and farthest to initial point distance are determined, using this four points as curtain figure
As the coordinate in four corners.
Painting canvas determines, four coordinates is obtained by the painting canvas determining module in image processing unit, on each coordinate
Lateral straight line of the X to, Y-direction is made, a plurality of X in four coordinates besieged city is the smallest by one into the rectangle of, Y-direction transverse direction rectilinear(-al)
A rectangular image is determined as canvas size, and records four new coordinates for realizing the painting canvas.As shown in figure 5, from A/B/C/D tetra-
Point respectively makes two vertical straight lines, and the minimum rectangle that each straight line surrounds is canvas size.
In invention, the specific steps are by laser transmitter projects laser for measuring in the painting canvas for focus adjustment
Distance is simultaneously sent to controller by the distance of the heart；The determination at painting canvas center, i.e., link up diagonal line, the point of centre intersection.
Four new coordinates are sent to controller；
Information controls the focal length that lens driving unit adjusts projection lens group, the letter that controller receives to controller based on the received
Breath is the information of range information and image size, for projecting image onto painting canvas.
The present invention has the advantage that
Auto-focusing and projection may be implemented in the present invention, and the present invention can choose suitable canvas size during projection,
After focusing, picture can be projected on curtain completely, without departing from the range of curtain.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of auto-focusing projection device characterized by comprising
Camera shoots image towards curtain；
Image processing unit obtains the picture of camera shooting, handles the picture, identify curtain in the picture of shooting
Four corner coordinates, and determine according to four coordinates the size of projection painting canvas；
Projection lens group is used for image projection to curtain；
Lens driving unit, for adjusting the focal length of projection lens group；
Controller unit, for receiving the size of the projection painting canvas of image processing unit transmission and controlling the lens driving unit
For adjusting the focal length of the projection lens group.
2. a kind of auto-focusing projection device according to claim 1, it is characterised in that: described image processing unit includes
Gray scale adjustment module, gray scale comparison module, coordinate determining module, painting canvas determining module；
The gray scale adjustment module is adjusted to grayscale mode according to the image of acquisition, and the pixel value of image is adjusted to
The range of 1500*1500 ~ 5000*5000；
The gray scale comparison module, the gray value of the pixel on image obtained for identification, and according to the ash of different pictures
The difference of angle value identifies the range of curtain on the image；
The coordinate determining module obtains four corners of curtain image according to the curtain image that the gray scale comparison module obtains
The coordinate of point；
The painting canvas determining module makes lateral straight line of the X to, Y-direction according to the four of acquisition coordinates on each coordinate,
By a plurality of X that four coordinates surround, into the rectangle of, Y-direction transverse direction rectilinear(-al), to be determined as painting canvas big for a smallest rectangular image
It is small, and record four new coordinates in corner for realizing the painting canvas.
3. a kind of auto-focusing projection device according to claim 2, it is characterised in that: it further include laser emitter, institute
Laser emitter is stated for emitting the distance moved fast laser and be used to measure the painting canvas center.
4. a kind of auto-focusing projection device according to claim 2, it is characterised in that: it further include storage unit, it is described
Storage unit connects the controller unit, for storing image information and ranging information.
5. a kind of auto-focusing projection device according to claim 1, it is characterised in that: further include that automatic horizontal adjusts list
Member is located on horizontal plane for adjusting the horizontal position of projection device itself.
6. a kind of Atomatic focusing method of projection device, which is characterized in that the Atomatic focusing method of the projection device includes:
Image is obtained, shoots image towards curtain using camera；
Image procossing is obtained the picture of camera shooting using image processing unit, handles the picture, identify shooting
Picture in curtain four corner coordinates, and determine according to four coordinates the size of projection painting canvas；
Focus adjustment receives the size for the projection painting canvas that image processing unit is sent by controller and controls lens driving unit
For adjusting the focal length of the projection lens group.
7. a kind of Atomatic focusing method of projection device according to claim 6, which is characterized in that in the figure in processing
Specifically:
Gray scale is adjusted, and by the gray scale adjustment module in image processing unit, the image adjustment that will acquire is grayscale mode, and will
The pixel value of image is adjusted to the range of 1500*1500 ~ 5000*5000；
Gray scale compares, the gray scale of the pixel on image obtained by the gray scale comparison module identification in image processing unit
Value, and the range of curtain on the image is identified according to the difference of the gray value of different pictures；
Coordinate determines, obtains the curtain image that gray scale comparison module obtains by the coordinate determining module in image processing unit,
Obtain the coordinate of four corner points of curtain image；
Painting canvas determines, obtains four coordinates by the painting canvas determining module in image processing unit, makes X on each coordinate
To the lateral straight line of, Y-direction, by a plurality of X in four coordinates besieged city into the rectangle of, Y-direction transverse direction rectilinear(-al) a smallest square
Shape image is determined as canvas size, and records four new coordinates for realizing the painting canvas.
8. a kind of Atomatic focusing method of projection device according to claim 7, it is characterised in that: the focus adjustment tool
Body step is
It is used to measure the distance at the painting canvas center by laser transmitter projects laser and distance is sent to controller；
Four new coordinates are sent to controller；
Information controls the focal length that lens driving unit adjusts projection lens group to controller based on the received.
9. a kind of Atomatic focusing method of projection device according to claim 6, it is characterised in that: the gray scale compares tool
Body is the gray value for obtaining each pixel, compares the gray value of each pixel, by the picture within gray value difference 5%
Vegetarian refreshments is classified as same set of pixels, and the most set of pixels of pixel is identified as curtain by the size of more same set of pixels.
10. a kind of Atomatic focusing method of projection device according to claim 6, it is characterised in that: the coordinate determines
The coordinate value for specially obtaining each pixel of curtain, by point nearest apart from origin in coordinate value and farthest o'clock as two
A coordinate value；Then by curtain with the overturning of its central horizontal, then the point nearest apart from origin and are obtained at farthest o'clock as two
Coordinate value；Coordinate of four coordinates that will acquire as four corner points of curtain image.
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| CN201811265497.4A CN109302595A (en) | 2018-10-29 | 2018-10-29 | A kind of Atomatic focusing method and projection device of hotel's projection device |
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| CN201811265497.4A CN109302595A (en) | 2018-10-29 | 2018-10-29 | A kind of Atomatic focusing method and projection device of hotel's projection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113132701A (en) * | 2021-04-13 | 2021-07-16 | 深圳吉祥星科技股份有限公司 | Automatic laser focusing and clarity compensation method, device, equipment and medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750443A (en) * | 2013-12-31 | 2015-07-01 | 联想(北京)有限公司 | Display control method and electronic equipment |
| CN105072430A (en) * | 2015-08-19 | 2015-11-18 | 海信集团有限公司 | Method and equipment for adjusting projected image |
| CN105096330A (en) * | 2015-08-20 | 2015-11-25 | 厦门美图之家科技有限公司 | Image processing method capable of automatically recognizing pure-color borders, system and a photographing terminal |
| CN105824180A (en) * | 2016-03-29 | 2016-08-03 | 乐视控股（北京）有限公司 | Method and device for regulating focal length of projector |
| CN107509066A (en) * | 2016-06-14 | 2017-12-22 | 中兴通讯股份有限公司 | A kind of method and projecting apparatus for adjusting projected image |
| CN108024101A (en) * | 2016-10-28 | 2018-05-11 | 中强光电股份有限公司 | Projector and its focalization method |
| CN108366237A (en) * | 2018-01-30 | 2018-08-03 | 北京小米移动软件有限公司 | Projected image adjusting method, device and computer readable storage medium |
-
2018
- 2018-10-29 CN CN201811265497.4A patent/CN109302595A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750443A (en) * | 2013-12-31 | 2015-07-01 | 联想(北京)有限公司 | Display control method and electronic equipment |
| CN105072430A (en) * | 2015-08-19 | 2015-11-18 | 海信集团有限公司 | Method and equipment for adjusting projected image |
| CN105096330A (en) * | 2015-08-20 | 2015-11-25 | 厦门美图之家科技有限公司 | Image processing method capable of automatically recognizing pure-color borders, system and a photographing terminal |
| CN105824180A (en) * | 2016-03-29 | 2016-08-03 | 乐视控股（北京）有限公司 | Method and device for regulating focal length of projector |
| CN107509066A (en) * | 2016-06-14 | 2017-12-22 | 中兴通讯股份有限公司 | A kind of method and projecting apparatus for adjusting projected image |
| CN108024101A (en) * | 2016-10-28 | 2018-05-11 | 中强光电股份有限公司 | Projector and its focalization method |
| CN108366237A (en) * | 2018-01-30 | 2018-08-03 | 北京小米移动软件有限公司 | Projected image adjusting method, device and computer readable storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113132701A (en) * | 2021-04-13 | 2021-07-16 | 深圳吉祥星科技股份有限公司 | Automatic laser focusing and clarity compensation method, device, equipment and medium |
| CN113132701B (en) * | 2021-04-13 | 2021-12-24 | 深圳吉祥星科技股份有限公司 | Automatic laser focusing and clarity compensation method, device, equipment and medium |
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Application publication date: 20190201 |