CN101795375B - Device for displaying projection and method for controlling projection - Google Patents
Device for displaying projection and method for controlling projection Download PDFInfo
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- CN101795375B CN101795375B CN2009103127198A CN200910312719A CN101795375B CN 101795375 B CN101795375 B CN 101795375B CN 2009103127198 A CN2009103127198 A CN 2009103127198A CN 200910312719 A CN200910312719 A CN 200910312719A CN 101795375 B CN101795375 B CN 101795375B
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Abstract
The invention relates to the technical field of projection, in particular to a device for displaying projection. The device comprises a signal source, a projector, an invisible light source used for irradiating a projection area, an invisible light camera used for shooting the projection area, a temporary storage module for an image to be projected, a shot image processing module and a projection image processing module, wherein the projection image processing module performs image modification on the image to be projected stored in the temporary storage module for the image to be projected according to information obtained by shooting through the infrared camera and processing through the shot image processing module, generates an actual projection image with a partial dark region; and the partial dark region of the actual projection image at least can cover the head of a human body entering the projection area after the actual projection image is projected by the projector. Projection light of the projector in a first technical scheme of the invention irradiates to a speaker entering the projection area of the projector without the interruption of the projection display of the projector. In addition, the invention also discloses a device for controlling the display of the projection.
Description
Technical field
The present invention relates to the shadow casting technique field, be specifically related to projection display equipment and method for controlling projection.
Background technology
Be used in fields such as meeting or demonstration when front projection machine fashionable; The speaker explains before can standing in screen usually, in this case, no matter which kind of mounting means front projection machine adopts; The capital has the part throw light to shine on speaker's the body; Form the projection color lump, not only making the beholder not feel well influences the demonstration effect, and more serious is when the speaker faces projector, possibly cause inpairment of vision.
Hinder the problem of eye in order to solve projector's direct projection light; Industry has proposed a kind ofly to adopt the ultrasonic listening personage and close the scheme of projected light beam in real time, when ultrasonic unit detects the people and stands in before the screen in this scheme, directly closes projected light beam; Though can avoid human eye to come to harm; But projection display picture can suddenly disappear, and causes the demonstration short interruption, makes the speaker to carry out follow-up speech according to projected image.
Therefore, provide a kind of and both can protect speaker's eyesight, do not influence the Projection Display effect again, can the real-time update protection range, Projection Display control device that cost is low and method are real to be necessary.
Summary of the invention
First technical problem that the present invention solves provides a kind of projection display equipment, makes its light that throws can not shine the speaker's who gets into the projector projected area eyes, and can not interrupt the Projection Display of projector simultaneously.
Second technical problem that the present invention solves provides a kind of method for controlling projection, makes the throw light of projector can not shine the speaker's who gets into the projector projected area eyes, and can not interrupt the Projection Display of projector simultaneously.
For solving first technical problem, the present invention adopts first technical scheme following:
A kind of projection display equipment; Comprise signal source, projector; In addition; This device comprises: be used to shine view field invisible light source, be used to take view field the invisible light camera, treat that projected image keeps in module, photographic images processing module and projected image processing module, wherein: this treat that the temporary module of projected image is used for reading and the storage signal source treat projected image; This photographic images processing module is used to store the invisible light camera and takes the initial invisible light image that does not comprise the personage; Also be used to receive the real-time invisible light image that the invisible light camera is taken simultaneously; And through comparing with this initial invisible light image by real-time invisible light image; Calculate position, shape and the size information of personage, and this information is sent to the projected image processing module in view field; This projected image processing module is carried out amending image according to the said information that is received from the photographic images processing module to being stored in the projected image of treating in the temporary module of projected image of treating; Generation has the actual projection images in local deepening zone, and this actual projection images its local deepening zone after projector's projection can cover human body at least and get into the head in the view field; This projected image processing module exports this actual projection images to projector.
As one of improvement of first technical scheme: said invisible light source is an infrared light supply, and said invisible light camera is an infrared camera.
As two of the improvement of first technical scheme: said local deepening zone be shaped as rectangle or circle.
As three of the improvement of first technical scheme: said amending image is meant the image brightness of treating projected image and said information corresponding region is reduced; Maybe that this corresponding region is original display image replaces to dark images, and other image-regions are left original image.
As four of the improvement of first technical scheme: said photographing process module is used for calculating position, shape and the size information of the personage of gained in view field according to it; Generation comprises stacking chart's layer of this information; And with this stacking chart's layer transmission projected image processing module; This stacking chart's layer is only done color or brightness processed to the zone at character positions place, and all the other zones are transparent; Said image processing be meant with stacking chart's layer with treat the projected image computing that superposes.
For solving second technical problem, second technical scheme that the present invention adopts is following:
A kind of method for controlling projection of projection display equipment is characterized in that may further comprise the steps:
(1) shines view field with invisible light source;
(2) take the invisible light source images of view field with the invisible light camera, and the width of cloth that it is the captured image that do not comprise the personage is sent to the photographic images processing module and stores as initial invisible light image;
(3) receive the real-time invisible light image of taking from the invisible light camera with the photographic images processing module; And will this real-time invisible light image and step (2) in initial invisible light image relatively; Draw position, shape and the size information of personage, and this information is sent to the projected image processing module in view field;
(4) also carry out in (3) in execution in step (1): read a frame from signal source and treat projected image and temporary to treating that projected image keeps in module;
(5) projection module of treating in the step (4) is made amendment according to the information that obtains in the step (3) with the projected image processing module; Obtain generating the actual projection images with local deepening zone, this actual projection images its local deepening zone after projector's projection can cover human body at least and get into the head in the view field;
(6) with in the step (5) to actual projection images export projector to;
(7) repeat above-mentioned steps (3) to (6), realize control in real time.
As one of improvement of second technical scheme: the invisible light source in the said step (1) is an infrared light supply, and the invisible light camera in the said step (2) is an infrared camera.
As two of the improvement of second technical scheme: said local deepening zone be shaped as rectangle or circle.
As three of the improvement of second technical scheme: the modification in the said step (5) is meant that the projected image processing module is according to the information that obtains in the step (3); The image brightness of treating the projected image corresponding region in the step (4) is reduced; Maybe that this corresponding region is original display image replaces to dark images, and other image-regions are left original image.
As four of the improvement of second technical scheme: the photographing process module also needs earlier position, shape and the size information of personage in view field in said step (3); After generation comprises stacking chart's layer of corresponding information, again this stacking chart's layer is transmitted the projected image processing module; Modification in the said step (5) is the projected image processing module with treating the projected image computing that superposes in stacking chart's layer that obtains in the step (3) and the step (4).
Compared with prior art, the beneficial effect of the present invention's first technical scheme is: the throw light of the projector of the present invention's first technical scheme shines on one's body the speaker who gets into the projector projected area, does not interrupt the Projection Display of projector simultaneously.Have following beneficial effect in addition:
1, through the local modification projected image, the direct irradiation speaker of projection ray can not occur, eliminate speaker's projection color lump on one's body when having protected speaker's eyesight.
2, adopt independent infrared image to take; Fast operation; Can arrive personage's position and shape by real-time tracing; Upgrade synchronously position and the shape size information of personage,, realize better display effect even walk about and make and also can in time convert correct projected image modification information to when stretching out one's hand action such as rotary head the speaker in view field.
3, infrared camera is taken view field's infrared image, does not handle the visible images of actual projection, reduces the image processing difficulty greatly, more is prone to realize stable Projection Display control effect.
4, need not carry out pixel than reciprocity complicated image processing mode, reduce the software processes difficulty, effectively improve processing speed projected image.
In addition, compared with prior art, the beneficial effect of the present invention's second technical scheme and the beneficial effect of first technical scheme are similar.
Description of drawings
Fig. 1 is the principle schematic of execution mode one of the present invention.
Wherein, 101 is infrared camera, and 102 is projector, and 103 is view field, and 104 is infrared light supply.
Embodiment
Execution mode one
This execution mode is first embodiment of the present invention's first technical scheme.
As shown in Figure 1, this embodiment comprises: signal source, projector 102, be used to shine view field 103 infrared light supply 104, be used to take the red infrared camera 101 of view field 103, treat that projected image keeps in module, photographic images processing module and projected image processing module.Photographed images processing module wherein, treat temporary module of projected image and projected image integrated treatment module can be one independently parts also can make the connector that can put into common computer.
The course of work and the principle of this execution mode are following:
(1) initialization: projector 102 starts this projection display equipment with when image projection is to screen or afterwards.The whole Projection Display of infrared light supply 104 irradiations zone, for infrared camera 101 shootings provide background light source, infrared camera 101 is taken the infrared image in whole Projection Display zone.When not having the personage in view field 102, the image that infrared camera 101 photographed is empty background infrared image, and promptly initial infrared image stores for use; And enter Projection Display when zone as the people, comprise personage's infrared image during the image that was photographed.
(2) generate people information: the photographic images processing module receives the real-time infrared image from infrared camera 101, and through itself and the initial infrared image that is stored in the photographic images processing module are compared, generates people information thereby calculate.This people information comprises that at least human body gets into shape (speaker's posture and gesture), size (speaker's physical size) and position (position that the speaker stands) information in view field's 102 scopes.This people information is transferred into the projected image processing module.(3) revise and to treat projected image: before revising projected image, need earlier to read a frame and treat projected image and temporary to treating that projected image keeps in module from signal source.The projected image processing module is according to the people information that is received from the photographic images processing module then; Reduce being stored in the image brightness of treating in the temporary module of projected image of treating projected image and this people information corresponding region; Maybe that this corresponding region is original display image replaces to dark images, and other image-regions are left original image.Promptly this actual projection images has the local deepening zone corresponding with the character positions, size and the shape that get into view field, and this actual projection images its local deepening zone after projector's projection can cover human body and get into the health in the view field.
(4) projection: last projected image processing module exports this actual projection images to projector 102.
In above-mentioned process, the shooting of infrared camera 101 and said projected image processing module output actual projection images are carried out synchronously.
Independently take the figure picture owing to adopt camera; And independent process, just can guarantee the synchronous of shooting picture and projected picture through simple Synchronization Control, even the personage walks about like this in view field; The protection zone also can be moved thereupon; And the zone size and shape can keep consistent with the personage, both can effectively protect human eye, can reduce influence to greatest extent again to drop shadow effect.In addition, do not need very accurately to obtain personage's overall dimension during photographic images, only need to obtain the contour shape size, therefore the requirement of hardware is not needed too highly, adopt common camera promptly can meet the demands, can realize lower cost solution.
In addition; Before operate as normal, need set up the regional mapping relations of photographic images and projected image; Promptly indicate the corresponding relation of coverage and actual drop shadow spread, the foundation of this mapping relations can be through being easy to realization in methods such as view field's boundary setting marks.Be to realize the projection control effect upgraded synchronously, make infrared shooting and Projection Display synchronous through the method that adopts synchronizing signal control.
In addition, in order to obtain processing speed faster, can adopt the shapes such as square or circle of simple rule to replace actual personage's shape personage's modifier area of treating projected image.
Execution mode two
This execution mode is second embodiment of the present invention's first technical scheme.This execution mode is with the difference of execution mode one: said projecting figure processing module adopts the mode of figure stack to treat projected image and handles, that is:
The photographing process module is also calculated position, shape and the size information of the personage of gained in view field according to it; Generation comprises stacking chart's layer of corresponding information; And this stacking chart's layer is sent to the projected image processing module; This stacking chart's layer is only done color or brightness processed to the zone at character positions place, and all the other zones are transparent.
Then projected image handle processing module with stacking chart's layer with treat the projected image computing that superposes; Obtain generating the actual projection images with local deepening zone, this actual projection images its local deepening zone after projector's projection can cover human body and get into the head in the view field.Certainly should deepening zone, part also can cover the person that gets in the view field and comprise the whole of head.
Execution mode three
This execution mode is first embodiment of the present invention's second technical scheme.
This execution mode may further comprise the steps:
(1) shines view field with infrared light supply;
(2) take the infrared image of view field with infrared camera, and the width of cloth that it is the captured image that do not comprise the personage is sent to the photographic images processing module and stores as initial infrared image;
(3) receive the real-time infrared image of taking with the photographic images processing module from infrared camera; And relatively with the initial infrared image in this real-time infrared image and the step (2); Draw position, shape and the size information of personage, and this information is sent to the projected image processing module in view field;
(4) also carry out in (3) in execution in step (1): read a frame from signal source and treat projected image and temporary to treating that projected image keeps in module;
(5) projected image of treating in the step (4) is made amendment according to the information that obtains in the step (3) with the projected image processing module; Generation has the actual projection images in local deepening zone, and this actual projection images its local deepening zone after projector's projection can cover human body at least and get into the head in the view field;
(6) with in the step (3) to (6) to actual projection images export projector to;
(7) repeat above-mentioned steps, realize control in real time.
Wherein, The projected image processing module can generate actual projection images through the mode that graphical element is revised; That is: the modification in the said step (5) is meant that the projected image processing module is according to the information that obtains in the step (3); The image brightness of treating the projected image corresponding region in the step (4) is reduced, and maybe that this corresponding region is original display image replaces to dark images, and other image-regions are left original image.
In addition; The projected image processing module also can generate actual projection images through the mode of figure stack; That is: the photographing process module also needs elder generation with position, shape and the size information of personage in view field in said step (3), after generation comprises stacking chart's layer of corresponding information, again this stacking chart's layer is sent to the projected image processing module; This stacking chart's layer is only done color or brightness processed to the zone at character positions place, and all the other zones are transparent; Modification in the said step (5) is the projected image processing module with treating the projected image computing that superposes in stacking chart's layer that obtains in the step (3) and the step (4).
In addition; Before operate as normal, need set up the regional mapping relations of photographic images and projected image; Promptly indicate the corresponding relation of coverage and actual drop shadow spread, the foundation of this mapping relations can be through being easy to realization in methods such as view field's boundary setting marks.Be to realize the projection control effect upgraded synchronously, make infrared shooting and Projection Display synchronous through the method that adopts synchronizing signal control.
Claims (10)
1. projection display equipment; Comprise signal source, projector; It is characterized in that; This device also comprises: be used to shine view field invisible light source, be used to take view field the invisible light camera, treat that projected image keeps in module, photographic images processing module and projected image processing module, wherein:
This treat that the temporary module of projected image is used for reading and the storage signal source treat projected image;
This photographic images processing module is used to store the initial invisible light image that does not comprise the personage that the invisible light camera is taken; Also be used to receive the real-time invisible light image that the invisible light camera is taken simultaneously; And through comparing with this initial invisible light image by real-time invisible light image; Calculate position, shape and the size information of personage, and this information is sent to the projected image processing module in view field;
Before operate as normal, set up the regional mapping relations of photographic images and projected image; This projected image processing module is carried out amending image according to the said information that is received from the photographic images processing module to being stored in the projected image of treating in the temporary module of projected image of treating; Generation has the actual projection images in local deepening zone, and this actual projection images its local deepening zone after projector's projection can cover human body at least and get into the head in the view field; This projected image processing module exports this actual projection images to projector.
2. projection display equipment according to claim 1 is characterized in that: said invisible light source is an infrared light supply, and said invisible light camera is an infrared camera.
3. projection display equipment according to claim 2 is characterized in that: said local deepening zone be shaped as rectangle or circle.
4. projection display equipment according to claim 3; It is characterized in that: said amending image is meant the image brightness of treating projected image and said information corresponding region is reduced; Maybe that this corresponding region is original display image replaces to black or dark images, and other image-regions are left original image.
5. projection display equipment according to claim 3; It is characterized in that: said photographic images processing module is used for calculating position, shape and the size information of the personage of gained in view field according to it; Generation comprises stacking chart's layer of this information; And this stacking chart's layer is sent to the projected image processing module, and this stacking chart's layer is only done color or brightness processed to the zone at character positions place, and all the other zones are transparent; The image processing of said projected image processing module be meant with stacking chart's layer with treat the projected image computing that superposes.
6. the method for controlling projection of a projection display equipment is characterized in that may further comprise the steps:
(1) shines view field with invisible light source;
(2) set up the regional mapping relations of photographic images and projected image before the operate as normal; Take the invisible light image of view field with the invisible light camera, and the width of cloth that it is the captured image that do not comprise the personage is sent to the photographic images processing module and stores as initial invisible light image;
(3) receive the real-time invisible light image of taking from the invisible light camera with the photographic images processing module; And will this real-time invisible light image and step (2) in initial invisible light image relatively; Draw position, shape and the size information of personage, and this information is sent to the projected image processing module in view field;
(4) also carry out in (3) in execution in step (1): read a frame from signal source and treat projected image and temporary to treating that projected image keeps in module;
(5) projected image of treating in the step (4) is made amendment according to the information that obtains in the step (3) with the projected image processing module; Generation has the actual projection images in local deepening zone, and this actual projection images its local deepening zone after projector's projection can cover human body at least and get into the head in the view field;
(6) with in the step (5) to actual projection images export projector to;
(7) repeat above-mentioned steps (3) to (6), realize control in real time.
7. method for controlling projection according to claim 6 is characterized in that: the invisible light source in the said step (1) is an infrared light supply, and the invisible light camera in the said step (2) is an infrared camera.
8. method for controlling projection according to claim 7 is characterized in that: the local deepening zone in the said step (5) be shaped as rectangle or circle.
9. method for controlling projection according to claim 6; It is characterized in that: the modification in the said step (5) is meant that the projected image processing module is according to the information that obtains in the step (3); The image brightness of treating the projected image corresponding region in the step (4) is reduced; Maybe that this corresponding region is original display image replaces to dark images, and other image-regions are left original image.
10. method for controlling projection according to claim 7; It is characterized in that: also needs are first with position, shape and the size information of personage in view field for shooting place image reason module in said step (3); After generation comprises stacking chart's layer of corresponding information; Again this stacking chart's layer is sent to the projected image processing module, this stacking chart's layer is only done color or brightness processed to the zone at character positions place, and all the other zones are transparent; Modification in the said step (5) is the projected image processing module with treating the projected image computing that superposes in stacking chart's layer that obtains in the step (3) and the step (4).
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| CN102325411A (en) * | 2011-09-01 | 2012-01-18 | 中国科学院深圳先进技术研究院 | Intelligent desk lamp and interacting method thereof |
| CN103293836A (en) * | 2012-02-27 | 2013-09-11 | 联想(北京)有限公司 | Projection method and electronic device |
| CN102830583A (en) * | 2012-09-28 | 2012-12-19 | 苏州鼎雅电子有限公司 | Eye shield projection method |
| CN106162015A (en) * | 2015-03-25 | 2016-11-23 | 上海分众软件技术有限公司 | A kind of video image optimizes display packing and system and polyhedral projection display system |
| CN104902200A (en) * | 2015-05-28 | 2015-09-09 | 深圳市智歌科技有限公司 | Projector with human eye recognition protection system |
| CN105245805B (en) * | 2015-09-06 | 2019-03-08 | 联想(北京)有限公司 | A kind of projecting method and electronic equipment |
| WO2017054116A1 (en) * | 2015-09-28 | 2017-04-06 | 神画科技（深圳）有限公司 | Automatic three-dimensional mapping projection system and method |
| CN105959659A (en) * | 2016-04-28 | 2016-09-21 | 乐视控股（北京）有限公司 | Method for realizing projector adaptive adjustment and projector |
| CN108124144A (en) * | 2016-11-29 | 2018-06-05 | 中兴通讯股份有限公司 | A kind of method for controlling projection and device |
| CN107205141B (en) * | 2017-07-24 | 2019-12-17 | 合肥联宝信息技术有限公司 | Projection control method and projection equipment |
| JP7285470B2 (en) * | 2018-05-17 | 2023-06-02 | パナソニックＩｐマネジメント株式会社 | Projection system, projection apparatus and projection method |
| CN110996084B (en) * | 2019-12-24 | 2022-12-27 | 成都极米科技股份有限公司 | Projection image processing method and device, projection equipment and storage medium |
| CN112752084A (en) * | 2020-12-30 | 2021-05-04 | 合肥联宝信息技术有限公司 | Projection control method and device and computer readable storage medium |
| CN113794868A (en) * | 2021-09-29 | 2021-12-14 | 中国联合网络通信集团有限公司 | Projection method and system |
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Effective date of registration: 20201130 Address after: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: Kezhu road high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 233 510670 Patentee before: VTRON GROUP Co.,Ltd. Effective date of registration: 20201130 Address after: 215500 No.13, Caotang Road, Changshu, Suzhou, Jiangsu Province Patentee after: Changshu intellectual property operation center Co.,Ltd. Address before: Unit 2414-2416, main building, no.371, Wushan Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. |
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Address after: 215500 5th floor, building 4, 68 Lianfeng Road, Changfu street, Changshu City, Suzhou City, Jiangsu Province Patentee after: Changshu intellectual property operation center Co.,Ltd. Address before: No.13 caodang Road, Changshu City, Suzhou City, Jiangsu Province Patentee before: Changshu intellectual property operation center Co.,Ltd. |
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