CN108124144A - A kind of method for controlling projection and device - Google Patents
A kind of method for controlling projection and device Download PDFInfo
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- CN108124144A CN108124144A CN201611074929.4A CN201611074929A CN108124144A CN 108124144 A CN108124144 A CN 108124144A CN 201611074929 A CN201611074929 A CN 201611074929A CN 108124144 A CN108124144 A CN 108124144A
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- 210000003128 head Anatomy 0.000 description 49
- 238000012545 processing Methods 0.000 description 11
- 238000005286 illumination Methods 0.000 description 7
- 230000037237 body shape Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
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- 208000027418 Wounds and injury Diseases 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
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- 230000004438 eyesight Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/164—Detection; Localisation; Normalisation using holistic features
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/168—Feature extraction; Face representation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/172—Classification, e.g. identification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
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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]
-
- 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
- H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/178—Human faces, e.g. facial parts, sketches or expressions estimating age from face image; using age information for improving recognition
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Abstract
The invention discloses a kind of method for controlling projection, obtain the first image in drop shadow spread, determine the identification object in drop shadow spread in described first image, and obtain the first identification information of the identification object；When first identification information meets preset condition, the projected picture parameter specified in region is adjusted.The invention also discloses a kind of projection controls.
Description
Technical field
The present invention relates to shadow casting technique more particularly to a kind of method for controlling projection and device.
Background technology
Portable projector collect advanced technology, exquisite appearance, android system and it is handy to carry about the advantages that in
All over the body, it is suitble to business people's office, is more suitable for amusement and recreation and home theater etc.；But in the family use there are one drawback,
Children often stare at projected light beam and see, very big injury is caused to the eyesight of children.
At present, there are the devices such as ultrasonic wave, infrared ray, detector to detect personage and realize the scheme of closing projected light beam,
As long as detecting personage station in these schemes in front of projection lens, projected light beam is just directly closed, although can be to avoid human eye
It comes to harm, but projected light beam can close suddenly, and viewing needs manual unlocking again, it is most important that this detection mode is not
Adult or child station can be distinguished well in front of projection lens.
Therefore, the identification object in drop shadow spread how is accurately identified, and then adjusts the projected picture ginseng for specifying region
Number, avoids strong illumination from injuring, is a problem to be solved.
The content of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of method for controlling projection and device, projection model can be accurately identified
Identification object in enclosing, and then the projected picture parameter for specifying region is adjusted, strong illumination is avoided to injure.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
An embodiment of the present invention provides a kind of method for controlling projection, the described method includes：
The first image in drop shadow spread is obtained, the identification object in drop shadow spread in described first image is determined, and obtains
Take the first identification information of the identification object；
When first identification information meets preset condition, the projected picture parameter specified in region is adjusted.
In said program, the identification object in the definite described first image in drop shadow spread, including：It obtains and throws in advance
The second image without identification object in the range of shadow, the first image of comparison and the second image determine the identification pair in the drop shadow spread
As.
In said program, first identification information meets preset condition, including：By the first identification information and default the
Two identification information rows compare, and comparing result is less than default comparison threshold value, it is determined that the identification information meets preset condition.
In said program, the projected picture parameter in region is specified in the adjustment, including：Correspond in adjustment projected picture
The identification object specifies the frame parameter in region.
In said program, the projected picture parameter in region is specified in the adjustment, including at least one of：Described in adjustment
Specify the brightness, projection light machine brightness, projection light machine angle of projected picture in region.
In said program, first identification information for obtaining the identification object, including at least one of：Obtain institute
State first facial identification feature information, first size information, the first shape information of identification object.
In said program, first image obtained in drop shadow spread, including：The use obtained in drop shadow spread can not
See the first image of light imaging.
The embodiment of the present invention additionally provides a kind of projection control, and described device includes：Identification module and projection adjust
Module；Wherein,
The identification module for obtaining the first image in drop shadow spread, determines drop shadow spread in described first image
Interior identification object, and obtain the first identification information of the identification object；
The projection adjustment module, when meeting preset condition for first identification information, adjusts and specifies in region
Projected picture parameter.
In said program, the identification module is specifically used for：The second figure without identification object in drop shadow spread is obtained in advance
Picture, the first image of comparison and the second image determine the identification object in the drop shadow spread.
In said program, the projection adjustment module is specifically used for：First identification information and the default second identification are believed
Breath row comparison, comparing result are less than default comparison threshold value, it is determined that the identification information meets preset condition.
In said program, the projection adjustment module is specifically used for：It adjusts and corresponds to the identification object in projected picture
Specify the frame parameter in region.
In said program, the projection adjustment module, specifically at least one of：It adjusts in the specified region and throws
The brightness of shadow picture, the brightness of adjustment projection light machine, adjustment projection light machine angle.
In said program, the first identification information of the identification object, including at least one of：The identification object
First facial identification feature information, first size information, first shape information.
In said program, described first image, including：The first image being imaged using black light.
The method for controlling projection and device that the embodiment of the present invention is provided obtain the first image in drop shadow spread, determine
Identification object in described first image in drop shadow spread, and obtain the first identification information of the identification object；Described first
When identification information meets preset condition, the projected picture parameter specified in region is adjusted.It is detected in this way, working as in drop shadow spread
Whens identifying object such as children etc., the projected picture parameter for specifying region such as children head is adjusted, makes regional luminance is specified to reduce, keep away
Exempt from strong illumination injury, promote user experience.
Description of the drawings
Fig. 1 is the flow diagram of method for controlling projection of the embodiment of the present invention；
Fig. 2 forms structure diagram for projecting apparatus of the embodiment of the present invention；
Fig. 3 is the flow diagram of projector method of the embodiment of the present invention；
Fig. 4 is the composition structure diagram of projection control of the embodiment of the present invention.
Specific embodiment
In the embodiment of the present invention, the first image in drop shadow spread is obtained, is determined in described first image in drop shadow spread
Identification object, and obtain it is described identification object the first identification information；When first identification information meets preset condition, adjust
Projected picture parameter in whole specified region.
With reference to embodiment, the present invention is further described in more detail.
Method for controlling projection provided in an embodiment of the present invention, as shown in Figure 1, the described method includes：
Step 101：The first image in drop shadow spread is obtained, determines the identification pair in drop shadow spread in described first image
As, and obtain the first identification information of the identification object；
Here, the drop shadow spread is the projecting apparatus scope that projected picture can be covered when projection arrangements are projected；It can
To shoot the first image of drop shadow spread with the photographic device built in projection arrangement or the photographic device of outside；Described first image
Coverage, which can be more than the drop shadow spread, can also be equal to drop shadow spread, it is preferred that the first image is equal to drop shadow spread
When effect it is more preferable, can be entered with accurate judgement projection ray irradiation identification object and from other objects outside drop shadow spread
It influences.The opportunity of shooting can be in projection process or before projection.
After obtaining the first image, the first image can be identified, determine whether there is identification object in image；Here,
The identification object can be people especially children or be head portrait etc.；It is existing that improved Adaboost algorithm etc. may be employed
Image in human body detecting method, the identification object in described first image is determined；Determine the identification object
Whether it is human body, head etc..
Further, the second image of drop shadow spread when can shoot a drop shadow spread in advance without identification object, by throwing
Processor inside image device etc. by the image comparisons algorithm such as characteristics of image method of comparison, compares the first image and the second image,
It determines the difference of two images, when described first image and variant the second image, the images such as limb recognition point can be passed through
Analysis method determines the identification object in the first image.
After determining identification object, the identification information of identification object can be obtained, the identification information includes：Identify object
First facial identification feature information, and/or first size information, and/or first shape information etc.；Specifically, it may be employed existing
Some head portrait recognition methods obtain the first facial identification feature information, and existing head portrait recognition methods includes：Based on statistics
Recognition methods, mainly including eigenface (Eigenface) method and Hidden Markov Model (HMM, Hidden Markov
Model) method etc.；Recognition methods based on connection mechanism, including artificial neural network (ANN, Artifical Neural
Network) method and elastic graph matching (EBGM, Elastic Bunch Graph Matching) method etc.；More also its
His integrated approach and the method for the non-2-D gray image of processing etc..By taking eigenface method as an example, the first facial that can extract
Identification feature information includes：Interpupillary distance, looks away from, eye nose away from etc. face feature informations.
The first size information can be head portrait dimension information, such as head circumference；The first shape information can be people
Shape information, head portrait shape information etc.；The size of the head portrait can be determined by existing method for detecting image edge etc.
Information and shape information can define head portrait shape according to square or rectangle, the height (definition of dimension information record head picture
For H) and it is wide (being defined as L), the head circumference size of head portrait is calculated by pi formula c=π d formula.
Further, the built-in photographic device or the photographic device of outside can be black light photographic devices,
Such as infrared pick-up head, described first image can be black light image, such as infrared view；Using black light image
It can be to avoid interference of the projection device image to photographic device captured image；In the projection that some have infrared eye
Application can also save cost in equipment.
Step 102：When first identification information meets preset condition, the projected picture parameter specified in region is adjusted；
Here it is possible to first identification information and default second identification information are compared, if comparing result
Less than default comparison threshold value, then the projected picture parameter specified in region is adjusted；Wherein, the second identification information and the first identification letter
It ceases similar, can also include：Second face recognition feature information, and/or the second dimension information, and/or the second shape information etc.；
Specifically, first facial identification feature information and default second face recognition feature information can be carried out pair
Than, by taking eigenface method as an example, interpupillary distance can be compared, looks away from, eye nose away from etc., the percentage of contrast difference can be counted flat
Average or weighted average are when as a comparison as a result, when comparing result is less than default comparison threshold value such as 15%, it is determined that described
Identification information meets preset condition；The default comparison threshold value can be determined according to the error of image comparison；It is described default
Second face recognition feature can specify the image of identification object by shooting in advance, then extract institute by above-mentioned recognition methods
State the second face recognition feature；
Can also by first size information, and/or first shape information respectively with default second dimension information, and/or
Second shape information is compared, and such as by the head circumference information in the first image compared with default head circumference information, can be incited somebody to action
The percentage average value of contrast difference is as a comparison as a result, when comparing result is less than default comparison threshold value such as 15%, it is determined that
The identification information meets preset condition；The default comparison threshold value can identify calculation error to determine according to image.First
Shape information can be body shape, such as compare the body shape information in the first image and default body shape information
Compared with can be by the percentage average value of contrast difference as a comparison as a result, when comparing result is less than default comparison threshold value such as 15%
When, it is determined that the identification information meets preset condition；
The comparison identification information, such as the first facial identification feature information of comparison identification object, and/or first size letter
Breath, and/or first shape information etc., can take the mode for selecting one to compare, only compare one therein；It can also be right one by one
Than until contrasting identical result；It such as can first compare first facial identification feature information, if not meeting preset condition,
Then continue to compare first size information；It can also compare respectively, comparing result such as be counted or weighted at the averages, to determine to be
It is no to meet preset condition.
When first identification information meets preset condition, as determined, the head portrait in the first image is identified as default object head
Picture can adjust the projected picture parameter in specified region, and the intense direct illumination of projection arrangement is avoided to identify the photosensitive of object
Sensillary area, such as eyes；Here, the projected picture in the specified region can be entire projected picture overlay area, can also be right
The region specified on object is identified described in Ying Yu, when such as identification object is entire human body, can be known using head as specified region
It, can be using eye as specified region when other object is human body head；The specified region can also be drawn with projected picture
Point, such as using certain part of projected picture as specified region, such as the left side 1/3rd, the right side three/first-class.The adjustment
Projected picture includes：Brightness etc. of projected picture is adjusted, the methods of brightness value that can be by changing original projection picture carrys out reality
It is existing；When adjusting entire projected picture, the method for adjusting projection light machine brightness, and/or projection light machine angle can also be used, to rise
To the effect of adjustment projection brightness；Also space will change original projection picture, adjustment projection light machine brightness and projection light machine angle
The methods of be used in combination.
When first identification information meets preset condition, projection arrangement can be cached by processor of projection arrangement etc.
In carry out amending image image to be projected, adjustment it is image to be projected correspond to specify regional luminance, make projected picture formation office
The dimmed image in portion, and projected, in this way, the picture being projected out specifies the area of region formation dark in identification object
Domain, to protect the photaesthesia position for specifying region, such as eyes.In this way, only adjustment member projected picture rather than closing are whole
A projection keeps projected picture continuous, without carrying out restarting projection arrangement again, improves user experience.
Using the method for the embodiment of the present invention, when there is children to enter drop shadow spread, photographic device can shoot projection
The image of scope identifies human body by image identification, further identifies the identification feature of children, as face feature is believed
Breath, head circumference information etc.；Facial feature information and the facial feature information being stored in advance in projection arrangement can be compared first,
It compares and successfully then carries out projected picture parameter adjustment；Irradiation can be subtracted to the brightness of children head or the projected picture of eye
It is weak, avoid strong illumination.If facial feature information comparison mismatches, head circumference information etc. can be continued and compared, after matching
Carry out projected picture parameter adjustment.
The good effect generated with reference to specific example to the present invention is described in further detail；
As shown in Fig. 2, projecting apparatus can include image taking module 21, image processing module 22 and projection module 23；Its
In,
Image taking module 21 can a built-in invisible infrared camera, image taking module 21 can not for storing
See that camera shoots the initial projections image of no face, while also receive the perspective view for having face of invisible camera shooting
Picture, and can by the way that this to be had to the image of face and initial pictures comparative analysis, be calculated face the position of view field,
Size and shape information；
Image processing module 22, for receiving the information of the transmission of image taking module 21, first inquiry is from storage unit
No to have matched image or data message, image processing module can include two storage units：First, image storage unit
221, for prestoring comparison face head portrait；The other is data storage cell 222, is deposited for storing the data such as head circumference size
Head circumference data of international standard announcement etc. may be employed in storage unit；If any the image or data to match, then image processing module
22 from obtaining image to be projected and carrying out amending image, and modification here is face in the projected image transferred to taking module 21
Overlay area light beam is handled, and forms the dimmed image of local light beam, and is transferred to projection module 23 and is continued to project, and will such as be covered
The light beam of lid eye portion dims, if instead all it fails to match for image and size data, then projected light beam continues normal operation；
Projection module 23, the image information for being transferred according to image processing module 22 are projected.
Projecting apparatus carries out image identification and the specific steps projected, as shown in Figure 4：
Step 301：Invisible infrared camera is installed in projecting apparatus, for shooting without face initial projections image and having
Facial image, and comparing and analyzing, calculates face in size, shape and position of view field etc., and by these information
It is transferred to next unit；
Step 302：Image processing module 22 receives the information of the transmission of image taking module 21, is stored first from image single
The matching image information of 221 retrieval of member, if it matches, going to step 304, otherwise, goes to step 303；
Step 303：Match information is retrieved from data storage cell 222, is mainly calculated according to the dimension data of facial image
The head circumference size gone out judges, if it matches, going to step 304, otherwise, not to image procossing, goes to step 305；
Step 304：Image processing module 22 obtains image to be projected, and will specify area image light beam bright in projected image
Degree is dimmed to the tone for not injuring eyes；
Step 305：Projection module 23 is projected according to the information that image processing module 22 transfers.
Projection control provided in an embodiment of the present invention, as shown in figure 4, identification module 41 and projection adjustment module 42；
Wherein,
The identification module 41 for obtaining the first image in drop shadow spread, determines to project model in described first image
Interior identification object is enclosed, and obtains the first identification information of the identification object；
Here, the drop shadow spread is the projecting apparatus scope that projected picture can be covered when projection arrangements are projected；It can
To shoot the first image of drop shadow spread with the photographic device built in projection arrangement or the photographic device of outside；Described first image
Coverage, which can be more than the drop shadow spread, can also be equal to drop shadow spread, it is preferred that the first image is equal to drop shadow spread
When effect it is more preferable, can be entered with accurate judgement projection ray irradiation identification object and from other objects outside drop shadow spread
It influences.The opportunity of shooting can be in projection process or before projection；
After obtaining the first image, the first image can be identified, determine whether there is identification object in image, here,
The identification object can be people, especially children or be head portrait etc.；It is existing that improved Adaboost algorithm etc. may be employed
Image in human body detecting method, the identification object in described first image is determined；Determine the identification object
Whether it is human body, head etc..
Further, the second image of drop shadow spread when can shoot a drop shadow spread in advance without identification object, by throwing
Processor inside image device etc. by the image comparisons algorithm such as characteristics of image method of comparison, compares the first image and the second image,
It determines the difference of two images, when described first image and variant the second image, the images such as limb recognition point can be passed through
Analysis method determines the identification object in the first image.
After determining identification object, the identification information of identification object can be obtained, the identification information includes：Identify object
First facial identification feature information, and/or first size information, and/or first shape information etc.；Specifically, it may be employed existing
Some head portrait recognition methods obtain the first facial identification feature information, and existing head portrait recognition methods includes：Based on statistics
Recognition methods, mainly include Eigenface methods and HMM methods etc.；Recognition methods based on connection mechanism, including ANN side
Method and EBGM methods etc.；Also some other integrated approach and the method for the non-2-D gray image of processing etc..With eigenface side
Exemplified by method, the first facial identification feature information that can be extracted includes：Interpupillary distance, looks away from, eye nose away from etc. face feature informations.
The first size information can be head portrait dimension information, such as head circumference；The first shape information can be people
Shape information, head portrait shape information etc.；The size of the head portrait can be determined by existing method for detecting image edge etc.
Information and shape information can define head portrait shape according to square or rectangle, the height (definition of dimension information record head picture
For H) and it is wide (being defined as L), the head circumference size of head portrait is calculated by pi formula c=π d formula.
Further, the built-in photographic device or the photographic device of outside can be black light photographic devices,
Such as infrared pick-up head, described first image can be black light image, such as infrared view；Using black light image
It can be to avoid interference of the projection device image to photographic device captured image；In the projection that some have infrared eye
Application can also save cost in equipment.
The projection adjustment module 42, when meeting preset condition for first identification information, adjusts and specifies in region
Projected picture parameter；
Here it is possible to first identification information and default second identification information are compared, if comparing result
Less than default comparison threshold value, then the projected picture parameter specified in region is adjusted；Wherein, the second identification information and the first identification letter
It ceases similar, can also include：Second face recognition feature information, and/or the second dimension information, and/or the second shape information etc.；
Specifically, first facial identification feature information and default second face recognition feature information can be carried out pair
Than, by taking eigenface method as an example, interpupillary distance can be compared, looks away from, eye nose away from etc., the percentage of contrast difference can be counted flat
Average or weighted average are when as a comparison as a result, when comparing result is less than default comparison threshold value such as 15%, it is determined that described
Identification information meets preset condition；The default comparison threshold value can be determined according to the error of image comparison；It is described default
Second face recognition feature can specify the image of identification object by shooting in advance, then extract institute by above-mentioned recognition methods
State the second face recognition feature.
Can also by first size information, and/or first shape information respectively with default second dimension information, and/or
Second shape information is compared, and such as by the head circumference information in the first image compared with default head circumference information, can be incited somebody to action
The percentage average value of contrast difference is as a comparison as a result, when comparing result is less than default comparison threshold value such as 15%, it is determined that
The identification information meets preset condition；The default comparison threshold value can identify calculation error to determine according to image.First
Shape information can be body shape, such as compare the body shape information in the first image and default body shape information
Compared with can be by the percentage average value of contrast difference as a comparison as a result, when comparing result is less than default comparison threshold value such as 15%
When, it is determined that the identification information meets preset condition；
The comparison identification information, such as the first facial identification feature information of comparison identification object, and/or first size letter
Breath, and/or first shape information etc., can take the mode for selecting one to compare, only compare one therein；It can also be right one by one
Than until contrasting identical result；It such as can first compare first facial identification feature information, if not meeting preset condition,
Then continue to compare first size information；It can also compare respectively, comparing result such as be counted or weighted at the averages, to determine to be
It is no to meet preset condition；
When first identification information meets preset condition, as determined, the head portrait in the first image is identified as default object head
Picture can adjust the projected picture parameter in specified region, and the intense direct illumination of projection arrangement is avoided to identify the photosensitive of object
Sensillary area, such as eyes；Here, the projected picture in the specified region can be entire projected picture overlay area or
Corresponding to the region specified on the identification object, when such as to identify object be entire human body, can using head as specified region,
It, can be using eye as specified region when identification object is human body head；The specified region can also be come with projected picture
Division, such as using certain part of projected picture as specified region, such as the left side 1/3rd, the right side three/first-class.The tune
Whole projected picture includes：Adjust brightness etc. of projected picture, the methods of brightness value that can be by changing original projection picture come
It realizes；When adjusting entire projected picture, the method for adjusting projection light machine brightness, and/or projection light machine angle can also be used, is come
Play the effect of adjustment projection brightness；Also space will change original projection picture, adjustment projection light machine brightness and projection light machine angle
The methods of spending is used in combination.
When first identification information meets preset condition, projection arrangement can be cached by processor of projection arrangement etc.
In carry out amending image image to be projected, adjustment it is image to be projected correspond to specify regional luminance, make projected picture formation office
The dimmed image in portion, and projected, in this way, the picture being projected out specifies the area of region formation dark in identification object
Domain, to protect the photaesthesia position for specifying region, such as eyes.In this way, only adjustment member projected picture rather than closing are whole
A projection keeps projected picture continuous, without carrying out restarting projection arrangement again, improves user experience.
Using the method for the embodiment of the present invention, when there is children to enter drop shadow spread, photographic device can shoot projection
The image of scope identifies human body by image identification, further identifies the identification feature of children, as face feature is believed
Breath, head circumference information etc.；Facial feature information and the facial feature information being stored in advance in projection arrangement can be compared first,
It compares and successfully then carries out projected picture parameter adjustment；Irradiation can be subtracted to the brightness of children head or the projected picture of eye
It is weak, avoid strong illumination.If facial feature information comparison mismatches, head circumference information etc. can be continued and compared, after matching
Carry out projected picture parameter adjustment.
In practical applications, identification module 41 can by photographic device combination projection arrangement central processing unit (CPU),
The realizations such as microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA)；Projection adjustment module
42 can be by the realizations such as CPU, MPU, DSP in projection arrangement or field programmable gate array (FPGA).
The above, be only highly preferred embodiment of the present invention, be not intended to limit the scope of the present invention, it is all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc. should be included in the protection of the present invention
Within the scope of.
Claims (14)
1. a kind of method for controlling projection, which is characterized in that the described method includes：
The first image in drop shadow spread is obtained, the identification object in drop shadow spread in described first image is determined, and obtains institute
State the first identification information of identification object；
When first identification information meets preset condition, the projected picture parameter specified in region is adjusted.
2. according to the method described in claim 1, it is characterized in that, knowledge in the definite described first image in drop shadow spread
Other object, including：The second image without identification object in drop shadow spread is obtained in advance, compares the first image and the second image determines
Identification object in the drop shadow spread.
3. according to the method described in claim 1, it is characterized in that, first identification information meets preset condition, including：It will
First identification information is compared with default second identification information row, and comparing result is less than default comparison threshold value, it is determined that the knowledge
Other information meets preset condition.
4. according to the method described in claim 1, it is characterized in that, the projected picture parameter in region, bag are specified in the adjustment
It includes：Correspond to the frame parameter that the identification object specifies region in adjustment projected picture.
5. according to the method described in claim 1, it is characterized in that, the projected picture parameter in region, bag are specified in the adjustment
Include at least one of：Adjust the brightness, projection light machine brightness, projection light machine angle of projected picture in the specified region.
6. method according to any one of claims 1 to 5, which is characterized in that described to obtain the first of the identification object
Identification information, including at least one of：Obtain first facial identification feature information, the first size letter of the identification object
Breath, first shape information.
7. method according to any one of claims 1 to 5, which is characterized in that first figure obtained in drop shadow spread
Picture, including：Obtain the first image being imaged using black light in drop shadow spread.
8. a kind of projection control, which is characterized in that described device includes：Identification module and projection adjustment module；Wherein,
The identification module for obtaining the first image in drop shadow spread, is determined in described first image in drop shadow spread
It identifies object, and obtains the first identification information of the identification object；
The projection adjustment module, when meeting preset condition for first identification information, adjusts the projection specified in region
Frame parameter.
9. device according to claim 8, which is characterized in that the identification module is specifically used for：Projection model is obtained in advance
Interior the second image without identification object is enclosed, the first image of comparison and the second image determine the identification object in the drop shadow spread.
10. device according to claim 8, which is characterized in that the projection adjustment module is specifically used for：First is known
Other information is compared with default second identification information row, and comparing result is less than default comparison threshold value, it is determined that the identification information
Meet preset condition.
11. device according to claim 8, which is characterized in that the projection adjustment module is specifically used for：Adjustment projection
Correspond to the frame parameter that the identification object specifies region in picture.
12. device according to claim 8, which is characterized in that it is described projection adjustment module, specifically for it is following at least it
One：Adjust the brightness, the brightness of adjustment projection light machine, adjustment projection light machine angle of projected picture in the specified region.
13. according to claim 8 to 12 any one of them device, which is characterized in that the first identification letter of the identification object
Breath, including at least one of：First facial identification feature information, first size information, the first shape of the identification object
Information.
14. according to claim 8 to 12 any one of them device, which is characterized in that described first image, including：Using not
First image of visual light imaging.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611074929.4A CN108124144A (en) | 2016-11-29 | 2016-11-29 | A kind of method for controlling projection and device |
| PCT/CN2017/109644 WO2018099247A1 (en) | 2016-11-29 | 2017-11-07 | Projection control method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611074929.4A CN108124144A (en) | 2016-11-29 | 2016-11-29 | A kind of method for controlling projection and device |
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ID=62226855
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| CN201611074929.4A Pending CN108124144A (en) | 2016-11-29 | 2016-11-29 | A kind of method for controlling projection and device |
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| CN (1) | CN108124144A (en) |
| WO (1) | WO2018099247A1 (en) |
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| CN111225197A (en) * | 2019-11-28 | 2020-06-02 | 歌尔股份有限公司 | Projection method, device, equipment and readable storage medium |
| CN114697627A (en) * | 2022-06-01 | 2022-07-01 | 深圳市美特乐光电科技有限公司 | Human eye protection method for projector and projector |
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| CN112687215B (en) * | 2020-12-28 | 2022-06-07 | 青岛海信激光显示股份有限公司 | Laser projection apparatus and control method thereof |
| CN114945086B (en) * | 2022-06-07 | 2023-06-30 | 华中科技大学 | Single forward projection ball curtain vision expansion method and system based on curved reflector |
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| WO2018099247A1 (en) | 2018-06-07 |
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Application publication date: 20180605 |