CN106339705A - Image acquisition method and device - Google Patents
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- CN106339705A CN106339705A CN201610676731.7A CN201610676731A CN106339705A CN 106339705 A CN106339705 A CN 106339705A CN 201610676731 A CN201610676731 A CN 201610676731A CN 106339705 A CN106339705 A CN 106339705A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/22—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition
- G06V10/225—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition based on a marking or identifier characterising the area
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/255—Detecting or recognising potential candidate objects based on visual cues, e.g. shapes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
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Abstract
The invention relates to an image acquisition method and device, and belongs to the technical field of image processing. The method comprises the steps that all frames of images acquired by a camera in photographing previewing are acquired in real time, and the frame of display equipment in the frame of image is identified in acquisition of each frame of image; and when a photographing control is triggered, the location area limited by the finally identified frame before triggering of the photographing control is acquired, the corresponding content of the location area on the original image acquired by the camera in triggering of the photographing control is determined, and the determined content acts as one image to be stored. The technical problems in the related technologies that the reading effect of the display content is influenced by the photographed background apart from the display equipment can be solved, and the effects that only the content of the area of the display equipment is stored, the user is enabled to store the content displayed by the effective display equipment and reading of the display content is facilitated can be achieved.
Description
Technical field
It relates to technical field of image processing, particularly to a kind of image acquisition method and device.
Background technology
Nowadays a lot of meetings take the mode of PowerPoint (English: powerpoint, ppt) to show speech content, but not
It is that each speaker can share the ppt of oneself after speech terminates to spectators.
In the case that speaker does not share ppt, if spectators are intended to obtain the content of ppt, mobile phone or flat board can be passed through
The smart machines such as computer take pictures to record the content of ppt.
The background beyond ppt would generally be comprised when taking pictures, lead to ppt only to account for the sub-fraction in whole photo, thus
The reading effect of impact ppt.
Content of the invention
The embodiment of the present disclosure provides a kind of image acquisition method and device, and described technical scheme is as follows:
A kind of first aspect according to the embodiment of the present disclosure, there is provided image acquisition method, methods described includes: obtains in real time
Take each frame picture that camera gathers when taking pictures preview, often obtain a frame picture, the side to presentation device in described frame picture
Frame is identified；When control of taking pictures is triggered, the frame finally identifying before control is triggered of taking pictures described in acquisition is limited
The band of position, determine described in take pictures on the control original image that described camera collects when being triggered with described position area
The corresponding content in domain, the described content determined is stored as pictures.By identifying the frame picture of preview of taking pictures
The frame of middle presentation device, stores the effective displaying to user in the frame picture of corresponding triggering moment when control of taking pictures is triggered
The content that equipment is shown, solves the background comprising when taking pictures in correlation technique beyond presentation device, leads to presentation device
Only accounting for the sub-fraction in whole photo, thus affecting the technical problem of the reading effect of the content that presentation device is shown, reaching
Arrive the effect of the content that easy-to-read presentation device is shown.
Optionally, the described frame to presentation device in described frame picture is identified, comprising: in described frame picture
Straight line is identified, obtain described in the region that formed of the straight line that identifies；Determine from the region being formed and meet described displaying
The region of shape corresponding to equipment, the frame in the region determined described in acquisition.By identifying the straight line in frame picture, will be with exhibition
Show that the corresponding region of device shaped is determined, can effectively determine the corresponding frame of presentation device.
Optionally, the described frame to presentation device in described frame picture is identified, comprising: obtain described frame picture
Corresponding first gray value of frame of former frame picture, described first gray value is the pixel of the frame of described former frame picture
Gray value summation；Calculate total with the gray value of the pixel of the frame correspondence position of described former frame picture in described frame picture
Be designated as the second gray value；When described first gray value and described second gray value difference within a predetermined range when, will be described
The frame of former frame picture is defined as the frame of presentation device in described frame picture；When described first gray value and described second ash
When the difference of angle value exceedes described preset range, the straight line in described frame picture is identified, obtain described in identify straight
The region that line is formed；Determine the region meeting shape corresponding to described presentation device from the region being formed, obtain described true
The frame in the region made.By obtaining the gray value summation of the corresponding pixel of frame in previous frame picture, to frame picture
When carrying out frame identification, the gray value summation obtaining the pixel of same position is contrasted, if gray-value variation is less, just
The bezel locations in previous frame picture being selected to use, eliminating the amount of calculation that frame is carried out with Straight Line Identification so that clapping
According to equipment in the case of more fixing, the frame of presentation device can be identified as early as possible.
Optionally, methods described also includes: the described frame identifying is highlighted, arranges the side highlighting
Frame is adjustable；After receiving the adjust instruction that chosen frame is adjusted, adjust institute according to described adjust instruction
State the position of chosen frame；Described when control of taking pictures is triggered, take pictures before control is triggered described in acquisition and finally identify
The band of position that the frame going out is limited, comprising: when described control of taking pictures is triggered, before control of taking pictures described in acquisition is triggered
Finally adjust the band of position that the frame obtaining is limited.By highlighting to the frame identifying, by manually carrying out
Correction, enabling manually correction obtains position more accurately frame.
Optionally, described the described content determined is stored as pictures, comprising: described in determining
The image stretch that content is formed is to the predetermined shape possessing predefined size；Image enhancement processing, institute are carried out to the image after stretching
State image enhancement processing at least to include mitigating texture that is fuzzy and strengthening word；Image after processing is carried out as pictures
Storage.Carry out stretching by the content of opposite side inframe and image enhaucament is so that the shape size of the picture preserving after stretching can
More unified, and image enhaucament, so that image content is relatively sharp, is easy to the reading of user.
A kind of second aspect according to the embodiment of the present disclosure, there is provided picture acquiring device, described device includes:
Identification module, is configured to obtain each frame picture that camera gathers when taking pictures preview in real time, often obtains a frame
Picture, is identified to the frame of presentation device in described frame picture；Memory module, is configured to be triggered in control of taking pictures
When, control of taking pictures described in acquisition be triggered before the band of position that limited of the frame that finally identifies of described identification module, determine
Content corresponding with the described band of position on the original image that when control of taking pictures described in going out is triggered, described camera collects, will
The described content determined is stored as pictures.
Optionally, described identification module, comprising: the first identification submodule, is configured to the straight line in described frame picture
Be identified, obtain described in the region that formed of the straight line that identifies；First acquisition submodule, is configured to from the region being formed
Determine the region meeting shape corresponding to described presentation device, the frame in the region determined described in acquisition.
Optionally, described identification module, comprising: the second acquisition submodule, is configured to obtain the previous of described frame picture
Corresponding first gray value of frame of frame picture, described first gray value is the ash of the pixel of frame of described former frame picture
Angle value summation；Calculating sub module, be configured to calculate in described frame picture with the frame correspondence position of described former frame picture
The gray value summation of pixel, is designated as the second gray value；Determination sub-module, is configured as described second acquisition submodule and obtains
The difference of described second gray value that calculates with described calculating sub module of described first gray value within a predetermined range when, will
The frame of described former frame picture is defined as the frame of presentation device in described frame picture；Second identification submodule, is configured to
Described second gray scale calculating with described calculating sub module when described first gray value that described second acquisition submodule obtains
When the difference of value exceedes described preset range, the straight line in described frame picture is identified, obtain described in the straight line that identifies
The region being formed；Determine the region meeting shape corresponding to described presentation device from the region being formed, obtain described determination
The frame in the region going out.
Optionally, described device also includes: display module, is configured to the described frame identifying is carried out with prominent showing
Show, it is adjustable for arranging the frame highlighting；Adjusting module, is configured to chosen frame is adjusted receiving
Adjust instruction after, according to described adjust instruction adjust described chosen frame position；Described memory module, is also configured
It is when described control of taking pictures is triggered, before control of taking pictures described in acquisition is triggered, described adjusting module finally adjusts the side obtaining
The band of position that frame is limited.
Optionally, described memory module, comprising: stretching submodule, is configured to the described content formation determined
Image stretch is to the predetermined shape possessing predefined size；Process submodule, after being configured to described stretching submodule stretching
Image carries out image enhancement processing, and described image enhancing processes and at least includes mitigating texture that is fuzzy and strengthening word；Storage
Module, is configured to be stored the described image processing after submodule process as pictures.
A kind of third aspect according to the embodiment of the present disclosure, there is provided picture acquiring device, comprising: processor；For depositing
Store up the memory of the executable instruction of described processor；Wherein, described processor is configured to: obtains camera in real time and is taking pictures
The each frame picture gathering during preview, often obtains a frame picture, and the frame of presentation device in described frame picture is identified；Clapping
When being triggered according to control, the band of position that frame that control of taking pictures described in acquisition finally identifies before being triggered is limited, determine
Content corresponding with the described band of position on the original image that when control of taking pictures described in going out is triggered, described camera collects, will
The described content determined is stored as pictures.
It should be appreciated that above general description and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Brief description
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the enforcement meeting the disclosure
Example, and be used for explaining the principle of the disclosure together with specification.
Fig. 1 is a kind of flow chart of the image acquisition method according to an exemplary embodiment；
Fig. 2 a is a kind of flow chart of the image acquisition method implementing to exemplify according to another exemplary；
Fig. 2 b is the flow process being identified according to the frame to presentation device in frame picture that an exemplary embodiment provides
Figure；
Fig. 2 c is the stream being identified according to the frame to presentation device in frame picture that another exemplary embodiment provides
Cheng Tu；
Fig. 2 d be according to an exemplary embodiment using the content determined as showing that pictures are stored
It is intended to；
Fig. 2 e is the stream being stored the content determined as pictures being provided according to an exemplary embodiment
Cheng Tu；
Fig. 3 is a kind of block diagram of the picture acquiring device according to an exemplary embodiment；
Fig. 4 is a kind of block diagram of the picture acquiring device implementing to exemplify according to another exemplary；
Fig. 5 is a kind of block diagram of the device for obtaining picture according to an exemplary embodiment.
Specific embodiment
Here will in detail exemplary embodiment be illustrated, its example is illustrated in the accompanying drawings.Explained below is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, the disclosure.
Fig. 1 is a kind of flow chart of the image acquisition method according to an exemplary embodiment, this image acquisition method
The smart machine that can apply to, in the smart machine comprise camera, be said here includes smart mobile phone, panel computer, many matchmakers
Body playback equipment etc..As shown in figure 1, this image acquisition method can include several steps as follows.
In step 110, obtain each frame picture that camera gathers when taking pictures preview in real time, often obtain a frame picture,
The frame of presentation device in this frame picture is identified.
In the step 120, when control of taking pictures is triggered, obtain the frame institute finally identifying before control is triggered of taking pictures
The band of position limiting, corresponding with this band of position on the original image that when determining that control of taking pictures is triggered, camera collects
Content, the content determined is stored as pictures.
In sum, the image acquisition method providing in the embodiment of the present disclosure, is taken pictures by identification in the frame picture of preview
The frame of presentation device, in the frame picture of the corresponding triggering moment of storage when control of taking pictures is triggered, to user, effective displaying sets
The standby content shown, solves the background comprising when taking pictures in correlation technique beyond presentation device, only leads to presentation device
Accounting for the sub-fraction in whole photo, thus affecting the technical problem of the reading effect of the content that presentation device is shown, reaching
The effect of the content that easy-to-read presentation device is shown.
In actual applications, the bezel locations that system identification goes out may have certain error with actual bezel locations, is
Make the bezel locations of presentation device more accurate, the method that can manually correct is adjusting.Specifically may refer to as figure
Step shown in 2a.
Fig. 2 a is a kind of flow chart of the image acquisition method implementing to exemplify according to another exemplary, this picture acquisition side
The smart machine that method can apply to, in the smart machine comprise camera, be said here includes smart mobile phone, panel computer, many
Apparatus for media playing etc..As shown in Figure 2 a, this image acquisition method can include several steps as follows.
In step 210, obtain each frame picture that camera gathers when taking pictures preview in real time, often obtain a frame picture,
The frame of presentation device in this frame picture is identified.
Here, when the preview of taking pictures said is that camera function is unlocked, camera is by a series of continuous frame figure collecting
Piece is sent to and is shown on screen, and the frame picture that camera collects in previews all will not be saved, only when with
Family is triggered when taking pictures control, and system just can preserve the frame picture that when control of taking pictures is triggered, camera collects.
In actual applications, as soon as typically camera often gathers frame picture, show in the frame picture that identification collects and set
Standby frame, usually one real-time process.
After identifying the frame of presentation device, just can extract the content in presentation device frame.
Here presentation device can be the curtain being used for projection in projector equipment, and usual speaker can be by the content of ppt
Project to and be shown to spectators on curtain, when spectators want the content obtaining ppt it is only necessary to shoot the content in curtain region
The content of ppt just can be got.
Optionally, the frame of presentation device in frame picture is identified, step as shown in Figure 2 b can be included.
In step 211, the straight line in frame picture is identified, the region that the straight line being identified out is formed.
In the step 212, determine, from the region being formed, the region meeting shape corresponding to presentation device, obtain and determine
The frame in the region going out.
By Straight Line Identification, find out the corresponding region of housing shape with presentation device, namely identify and can constitute exhibition
Show the straight line of equipment correspondingly-shaped.
Here the Straight Line Identification said can be identified by hough line detection algorithm, hough line detection algorithm
Principle be the straight line in the corresponding parameter coordinate system of one of coordinates of original image coordinates system point, in same parameter coordinate system
One of the corresponding original coordinate system of straight line point, present in original coordinate system straight line slope a little and intercept be
Identical, therefore after by each spot projection in original coordinate system in parameter coordinate system, has according in parameter coordinate system
There is no accumulation point, judge in original coordinate system either with or without straight line.
Optionally, Straight Line Identification, freeman line detection method can also be carried out by freeman line detection method
It is to be executed by chain code, chain code is a kind of coded representation on border, with boundary direction as coding basis, general description
It is border point set.From the beginning of initial chain code, each chain code is determined with a straight line crossing area and two be used for determining next
Whether chain code belongs to collinear up-and-down boundary line, if next chain code be located at up-and-down boundary line within, this chain code with upper
One chain code belongs to same straight line, and otherwise this chain code belongs to another straight line.
Optionally, can also be completed by other modes known to those skilled in the art when carrying out Straight Line Identification,
Here just repeat no more.
General, when being continuously shot, the position of camera is more fixing for user, exhibits in order to faster identification
Show the frame of equipment, side can be determined using the method for the less calculating gray value of amount of calculation for relative rectilinear identification
Frame.Optionally, the frame of presentation device in frame picture is identified, step as shown in Figure 2 c can also be included.
In step 213, obtain corresponding first gray value of frame of the former frame picture of this frame picture.
Here the first gray value said is the gray value summation of the pixel of the frame of former frame picture.
The image that camera collects is made up of the pixel with resolution ratio respective amount, for the side having confirmed
Frame, can obtain position and the number of the corresponding pixel of this frame, obtain the gray value of these pixels, calculate these gray scales
The summation of value.
Optionally, the mean value that can also calculate the corresponding gray value of these pixels is used as reduced parameter.
Gray value refers to the color depth in image, and typically from 0 to 255, white is 255 to scope, and black is 0.
Optional it is also possible to different pixels are distinguished by features such as the brightness of pixel and colors, utilize these
Contrasting the pixel at different frame picture same position, whether the position for judging capture apparatus changes characteristic value
Become.
In step 214, calculate the gray value with the pixel of the frame correspondence position of former frame picture in this frame picture
Summation, is designated as the second gray value.
Obtain the corresponding position of frame in step 213, in next frame picture, obtain same position, namely obtain position
With number identical pixel, calculate the summation of the corresponding gray value of these pixels.
Optionally, if store is the mean value of gray value, next frame picture also calculates the mean value of gray value.
In step 215, when the first gray value and the second gray value difference within a predetermined range when, by former frame picture
Frame be defined as the frame of presentation device in this frame picture.
In different frame pictures, set a preset range for the excursion of the summation of gray value in advance, when the first ash
When the difference of angle value and the second gray value is less than this preset range, show gray value varies less it is meant that photographing device
Position more fixing, then the regional change of the image that camera collects is also less it is possible to using the side getting before
Frame, as the frame of presentation device in next frame picture, directly intercepts the content in frame, can determine bezel locations faster,
Get the content in frame.
In the step 216, when the difference of the first gray value and the second gray value exceedes preset range, in this frame picture
Straight line be identified, the region that the straight line that is identified out is formed；Determine from the region being formed and meet presentation device institute
The region of correspondingly-shaped, obtains the frame in the region determined.
If changing greatly of the summation of gray value, exceed preset range, shown that the amplitude of this capture apparatus movement is larger,
The frame obtaining before then can not be directly used as the frame of presentation device in next frame picture, needs to calculate by Straight Line Identification
Identify that this next frame picture goes out the frame of presentation device.
In actual applications, by ambient, presentation device place background color and user's handheld terminal angle
Impact, the bezel locations that system identification goes out and angle are not necessarily accurate, or the shape of the frame composition identifying there occurs
Deformation, the mode that now can manually correct adjusts the position of the frame identifying.Optionally, open up in this frame picture
After showing that the frame of equipment is identified, this image acquisition method may include steps of.
In a step 220, the frame identifying is highlighted, it is adjustable for arranging the frame highlighting.
That is said here highlights to the frame identifying, can be to generate a nothing with frame correspondingly-shaped
The figure of filling, is shown with imaging importing so that user can see that the frame position that system identification goes out on frame correspondence position
Put, to confirm whether this bezel locations is accurate.
Because the frame that this highlights is set to can adjust, when the frame that the user discover that system identification is inaccurate, can
To be adjusted to bezel locations manually.
In step 230, after receiving the adjust instruction that chosen frame is adjusted, adjust according to adjust instruction
The position of whole chosen frame.
When the position of user's manual correction frame, system generates corresponding adjust instruction according to the adjustment operation of user,
This adjust instruction can control the chosen frame highlighting to enter line position according to the adjustment requirement that adjust instruction is comprised
Put adjustment.
In step 240, when control of taking pictures is triggered, obtain the frame institute finally identifying before control is triggered of taking pictures
The band of position limiting, corresponding with the band of position on the original image that when determining that control of taking pictures is triggered, camera collects
Content, the content determined is stored as pictures.
Optionally, corresponding with step 230, when control of taking pictures is triggered, obtaining takes pictures before control is triggered finally adjusts
The band of position that the whole frame obtaining is limited.General, system is with the bezel locations of user's manual correction for preferentially determining
Go out the frame of presentation device.
In actual applications, the content determined and original image all can be preserved it is also possible in using determining
Hold replacement original image to be stored.
When control of taking pictures is triggered, system has determined the frame of presentation device by step before, according to side
Frame limited area determines the content in corresponding original image, preserves the image of this content.
Original image namely takes pictures control when being triggered, a frame picture of the corresponding triggering moment that camera collects,
Under general exposal model, system is typically preservation and takes pictures control corresponding frame picture when being triggered.By with determining
Content replaces this frame picture, can directly preserve the image in frame limited area, so can save memory space, very aobvious
So it is also possible to all be stored frame picture with the content determined, so that the content shooting the picture obtaining is essentially
The content that presentation device is shown.
Illustrate, as shown in Figure 2 d, presentation device is showing the content of ppt, when user opens and takes pictures preview, take the photograph
As head gets a series of continuous frame pictures 21, system identification goes out the frame of presentation device in each frame picture, when control of taking pictures
When part 22 is triggered, corresponding triggering moment camera collects frame picture 23, then utilize the frame of presentation device in frame picture 23
Content 24 in region is replaced frame picture 23 and is preserved, or the rim area by frame picture 23 and presentation device in frame picture 23
Content 24 in domain is all stored.
In actual applications, due to rock or light impact may result in shooting picture material unintelligible, pass through
Picture is carried out with some process, the picture material of preservation can be made to become apparent from.Optionally, using the content determined as one
Picture carries out storing the step that can also include as shown in Figure 2 e.
In step 241, by the image stretch of the content determined formation to the predetermined shape possessing predefined size.
The shape that may result in the presentation device photographing due to due to shooting angle there occurs deformation, or passes through
The manually adjusting of user leads to the predetermined shape that the shape of frame is not rule, in order that user gets effect and preferably schemes
Picture, the image that can form the content determined carries out stretch processing.
Optionally, so that the shapes and sizes of multiple images arriving are more unified, can be pre- to possessing by image stretch
The predetermined shape of sizing, such as, so that predetermined shape is as rectangle as a example, the image stretch of the trapezoid area that can will identify that is
Rectangle.
In step 242, image enhancement processing is carried out to the image after stretching.
Here the image enhancement processing said at least includes mitigating texture that is fuzzy and strengthening word.
The content that generally presentation device is shown can comprise picture and Word message, when shooting due to rocking and may lead
Content of shooting is caused to obscure, therefore passing through to mitigate to obscure to make image relatively sharp.In addition, being affected by light, word
Color may partially light it is impossible to be different from background well, by strengthen word texture so that word becomes apparent from,
It is easy to the reading of user.
In step 243, the image after processing is stored as pictures.
Due to only need to preserve presentation device frame limited area in content, therefore complete to image procossing after, utilize
Image after process is replaced original image and is preserved, or the image after processing all is preserved with original image.
Optionally, system can also arrange a unlatching control, and when user triggers this unlatching control, system can be automatically
Execute all of above step with regard to image acquisition method.
In sum, the image acquisition method providing in the embodiment of the present disclosure, is taken pictures by identification in the frame picture of preview
The frame of presentation device, in the frame picture of the corresponding triggering moment of storage when control of taking pictures is triggered, to user, effective displaying sets
The standby content shown, solves the background comprising when taking pictures in correlation technique beyond presentation device, only leads to presentation device
Accounting for the sub-fraction in whole photo, thus affecting the technical problem of the reading effect of the content that presentation device is shown, reaching
The effect of the content that easy-to-read presentation device is shown.
In addition, by identifying the straight line in frame picture, region corresponding with presentation device shape is determined, Ke Yiyou
Effect determines the corresponding frame of presentation device.
In addition, by the gray value summation obtaining the corresponding pixel of frame in previous frame picture, carrying out to frame picture
During frame identification, the gray value summation of pixel obtaining same position is contrasted, if gray-value variation less it is possible to
Select the bezel locations in previous frame picture to use, eliminate the amount of calculation that Straight Line Identification is carried out to frame and set so that taking pictures
For in the case of more fixing, the frame of presentation device can be identified as early as possible.
In addition, by highlighting to the frame identifying, by being manually corrected, enabling manually school
Just obtaining position more accurately frame.
In addition, by the content of opposite side inframe carry out stretch and image enhaucament so that stretching after preserve picture shape
It is sized to more unify, and image enhaucament, so that image content is relatively sharp, is easy to the reading of user.
Following for disclosure device embodiment, can be used for executing method of disclosure embodiment.Real for disclosure device
Apply the details not disclosed in example, refer to method of disclosure embodiment.
Fig. 3 is a kind of block diagram of the picture acquiring device according to an exemplary embodiment, and this picture acquiring device can
To be applied in the smart machine comprise camera, the smart machine said here includes smart mobile phone, panel computer, multimedia
Playback equipment etc..This picture acquiring device includes but is not limited to: identification module 310 and memory module 320.
Identification module 310, is configured to obtain each frame picture that camera gathers when taking pictures preview in real time, often obtains one
Frame picture, is identified to the frame of presentation device in this frame picture.
Memory module 320, is configured to, when control of taking pictures is triggered, obtain identification module before control of taking pictures is triggered
The band of position that 310 frames finally identifying are limited, when determining that control of taking pictures is triggered camera collect original
On picture, content corresponding with the band of position, the content determined is stored as pictures.
In sum, the picture acquiring device providing in the embodiment of the present disclosure, is taken pictures by identification in the frame picture of preview
The frame of presentation device, in the frame picture of the corresponding triggering moment of storage when control of taking pictures is triggered, to user, effective displaying sets
The standby content shown, solves the background comprising when taking pictures in correlation technique beyond presentation device, only leads to presentation device
Accounting for the sub-fraction in whole photo, thus affecting the technical problem of the reading effect of the content that presentation device is shown, reaching
The effect of the content that easy-to-read presentation device is shown.
Fig. 4 is a kind of block diagram of the picture acquiring device implementing to exemplify according to another exemplary, this picture acquiring device
The smart machine that can apply to, in the smart machine comprise camera, be said here includes smart mobile phone, panel computer, many matchmakers
Body playback equipment etc..This picture acquiring device includes but is not limited to: identification module 410 and memory module 420.
Identification module 410, is configured to obtain each frame picture that camera gathers when taking pictures preview in real time, often obtains one
Frame picture, is identified to the frame of presentation device in this frame picture.
Here, when the preview of taking pictures said is that camera function is unlocked, camera is by a series of continuous frame figure collecting
Piece is sent to and is shown on screen, and the frame picture that camera collects in previews all will not be saved, only when with
Family is triggered when taking pictures control, and system just can preserve the frame picture that when control of taking pictures is triggered, camera collects.
Here presentation device can be the curtain being used for projection in projector equipment.
Memory module 420, is configured to, when control of taking pictures is triggered, obtain identification module before control of taking pictures is triggered
The band of position that 410 frames finally identifying are limited, when determining that control of taking pictures is triggered camera collect original
On picture, content corresponding with the band of position, the content determined is stored as pictures.
In actual applications, the content determined and original image all can be preserved it is also possible in using determining
Hold replacement original image to be stored.
When control of taking pictures is triggered, system has determined the frame of presentation device by step before, according to side
Frame limited area determines the content in corresponding original image, preserves the image of this content.
Original image namely takes pictures control when being triggered, a frame picture of the corresponding triggering moment that camera collects,
Under general exposal model, system is typically preservation and takes pictures control corresponding frame picture when being triggered.By with determining
Content replaces this frame picture, can directly preserve the image in frame limited area, so can save memory space, very aobvious
So it is also possible to all be stored frame picture with the content determined, so that the content shooting the picture obtaining is essentially
The content that presentation device is shown.
Optionally, identification module 410 may include that the first identification submodule 411 and the first acquisition submodule 412.
First identification submodule 411, is configured to the straight line in this frame picture is identified, the straight line being identified out
The region being formed.
First acquisition submodule 412, is configured to determine and meet shape corresponding to presentation device from the region being formed
Region, obtain the frame in region determined.
By Straight Line Identification, find out the corresponding region of housing shape with presentation device, namely identify and can constitute exhibition
Show the straight line of equipment correspondingly-shaped.
Optionally, identification module 410 can also include: the second acquisition submodule 413, calculating sub module 414, determines submodule
Block 415 and the second identification submodule 416.
Second acquisition submodule 413, is configured to obtain corresponding first ash of frame of the former frame picture of this frame picture
Angle value.
Here the first gray value said is the gray value summation of the pixel of the frame of former frame picture.
The image that camera collects is made up of the pixel with resolution ratio respective amount, for the side having confirmed
Frame, obtains position and the number of the corresponding pixel of this frame, obtains the gray value of these pixels, calculate these gray values
Summation.
Optionally, the mean value that can also calculate the corresponding gray value of these pixels is used as reduced parameter.
Gray value refers to the color depth in image, and typically from 0 to 255, white is 255 to scope, and black is 0.
Optional it is also possible to different pixels are distinguished by features such as the brightness of pixel and colors, utilize these
Contrasting the pixel at different frame picture same position, whether the position for judging capture apparatus changes characteristic value
Become.
Calculating sub module 414, is configured to calculate the pixel with the frame correspondence position of former frame picture in this frame picture
The gray value summation of point, is designated as the second gray value.
Optionally, if store is the mean value of gray value, next frame picture also calculates the mean value of gray value.
Determination sub-module 415, is configured as the first gray value and the calculating sub module of the second acquisition submodule 413 acquisition
The difference of 414 the second gray values calculating within a predetermined range when, the frame of former frame picture is defined as in this frame picture
The frame of presentation device.
In different frame pictures, set a preset range for the excursion of the summation of gray value in advance, when the first ash
When the difference of angle value and the second gray value is less than this preset range, show gray value varies less it is meant that photographing device
Position more fixing, then the regional change of the image that camera collects is also less it is possible to using the side getting before
Frame, as the frame of presentation device in next frame picture, directly intercepts the content in frame, can determine bezel locations faster,
Get the content in frame.
Second identification submodule 416, is configured as the first gray value and calculating of the second acquisition submodule 413 acquisition
When the difference of the second gray value that module 414 calculates exceedes preset range, the straight line in this frame picture is identified, obtains
The region that the straight line identifying is formed；Determine, from the region being formed, the region meeting shape corresponding to presentation device, obtain
The frame in the region determined.
If changing greatly of the summation of gray value, exceed preset range, shown that the amplitude of this capture apparatus movement is larger,
The frame obtaining before then can not be directly used as the frame of presentation device in next frame picture, needs to calculate by Straight Line Identification
Identify that this next frame picture goes out the frame of presentation device.
In actual applications, by ambient, presentation device place background color and user's handheld terminal angle
Impact, the bezel locations that system identification goes out and angle are not necessarily accurate, or the shape of the frame composition identifying there occurs
Deformation, the mode that now can manually correct adjusts the position of the frame identifying.Corresponding, this device can also wrap
Include: display module 430 and adjusting module 440.
Display module 430, is configured to the frame identifying is highlighted, and arranging the frame highlighting is can
Adjustment.
That is said here highlights to the frame identifying, can be to generate a nothing with frame correspondingly-shaped
The figure of filling, is shown with imaging importing so that user can see that the frame position that system identification goes out on frame correspondence position
Put, to confirm whether this bezel locations is accurate.
Because the frame that this highlights is set to can adjust, when the frame that the user discover that system identification is inaccurate, can
To be adjusted to bezel locations manually.
Adjusting module 440, is configured to after receiving the adjust instruction that chosen frame is adjusted, according to tune
The position of the chosen frame of whole instruction adjustment.
When the position of user's manual correction frame, system generates corresponding adjust instruction according to the adjustment operation of user,
This adjust instruction can control the chosen frame highlighting to enter line position according to the adjustment requirement that adjust instruction is comprised
Put adjustment.
General, system is preferentially to determine the frame of presentation device with the bezel locations of user's manual correction.
Optionally, memory module 420, are additionally configured to when control of taking pictures is triggered, and obtain before control of taking pictures is triggered
Adjusting module 440 finally adjusts the band of position that the frame obtaining is limited.
Optionally, memory module 420 can also include: stretching submodule 421, process submodule 422 and sub-module stored
423.
Stretching submodule 421, is configured to the image stretch forming the content determined to possessing the pre- of predefined size
Setting shape.
The shape that may result in the presentation device photographing due to due to shooting angle there occurs deformation, or passes through
The manually adjusting of user leads to the predetermined shape that the shape of frame is not rule, in order that user gets effect and preferably schemes
Picture, the image that can form the content determined carries out stretch processing.
Optionally, so that the shapes and sizes of multiple images arriving are more unified, can be pre- to possessing by image stretch
The predetermined shape of sizing.
Process submodule 422, be configured to carry out image enhancement processing to the image after stretching submodule 421 stretching.
Here the image enhancement processing said at least includes mitigating texture that is fuzzy and strengthening word.
The content that generally presentation device is shown can comprise picture and Word message, when shooting due to rocking and may lead
Content of shooting is caused to obscure, therefore passing through to mitigate to obscure to make image relatively sharp.In addition, being affected by light, word
Color may partially light it is impossible to be different from background well, by strengthen word texture so that word becomes apparent from,
It is easy to the reading of user.
Sub-module stored 423, is configured to be deposited processing the image after submodule 422 is processed as pictures
Storage.
Due to need preserve presentation device frame limited area in content, therefore complete to image procossing after, will process
Image afterwards is preserved.In order to save memory space, the image after processing can also be replaced original image and be preserved.
In sum, the picture acquiring device providing in the embodiment of the present disclosure, is taken pictures by identification in the frame picture of preview
The frame of presentation device, in the frame picture of the corresponding triggering moment of storage when control of taking pictures is triggered, to user, effective displaying sets
The standby content shown, solves the background comprising when taking pictures in correlation technique beyond presentation device, only leads to presentation device
Accounting for the sub-fraction in whole photo, thus affecting the technical problem of the reading effect of the content that presentation device is shown, reaching
The effect of the content that easy-to-read presentation device is shown.
In addition, by identifying the straight line in frame picture, region corresponding with presentation device shape is determined, Ke Yiyou
Effect determines the corresponding frame of presentation device.
In addition, by the gray value summation obtaining the corresponding pixel of frame in previous frame picture, carrying out to frame picture
During frame identification, the gray value summation of pixel obtaining same position is contrasted, if gray-value variation less it is possible to
Select the bezel locations in previous frame picture to use, eliminate the amount of calculation that Straight Line Identification is carried out to frame and set so that taking pictures
For in the case of more fixing, the frame of presentation device can be identified as early as possible.
In addition, by highlighting to the frame identifying, by being manually corrected, enabling manually school
Just obtaining position more accurately frame.
In addition, by the content of opposite side inframe carry out stretch and image enhaucament so that stretching after preserve picture shape
It is sized to more unify, and image enhaucament, so that image content is relatively sharp, is easy to the reading of user.
It should be noted is that, above-described embodiment provide device realize its picture acquisition function when, only more than
The division stating each functional module is illustrated, and in practical application, can distribute above-mentioned functions according to actual needs
Completed by different functional modules, the content structure of equipment will be divided into different functional modules, described above to complete
All or part of function.
With regard to the device in above-described embodiment, wherein the concrete mode of modules execution operation is in relevant the method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
The disclosure one exemplary embodiment additionally provides a kind of picture acquiring device, is capable of the picture of disclosure offer
Acquisition methods.This device includes: processor, and for storing the memory of the executable instruction of processor.Wherein, processor
It is configured to:
Obtain each frame picture that camera gathers when taking pictures preview in real time, often obtain a frame picture, in this frame picture
The frame of presentation device is identified；
When control of taking pictures is triggered, obtain the position area that the frame finally identifying before control is triggered of taking pictures is limited
Domain, content corresponding with this band of position on the original image that when determining that control of taking pictures is triggered, camera collects, will be really
The content made is stored as pictures.
Fig. 5 is a kind of block diagram of the device for obtaining picture according to an exemplary embodiment.For example, device
500 can be mobile phone, computer, digital broadcast terminal, messaging devices, game console, tablet device, and medical treatment sets
Standby, body-building equipment, personal digital assistant etc..
With reference to Fig. 5, device 500 can include following one or more assemblies: process assembly 502, memory 504, power supply
Assembly 506, multimedia groupware 508, audio-frequency assembly 510, the interface 512 of input/output (i/o), sensor cluster 514, and
Communication component 516.
The integrated operation of the usual control device 500 of process assembly 502, such as with display, call, data communication, phase
Machine operation and record operate associated operation.Process assembly 502 can include one or more processors 520 and refer to execute
Order, to complete all or part of step of above-mentioned method.Additionally, process assembly 502 can include one or more modules, just
Interaction between process assembly 502 and other assemblies.For example, process assembly 502 can include multi-media module, many to facilitate
Interaction between media component 508 and process assembly 502.
Memory 504 is configured to store various types of data to support the operation in device 500.The showing of these data
Example includes the instruction of any application program for operating on device 500 or method, contact data, telephone book data, disappears
Breath, picture, video etc..Memory 504 can be by any kind of volatibility or non-volatile memory device or their group
Close and realize, such as static RAM (sram), Electrically Erasable Read Only Memory (eeprom), erasable compile
Journey read-only storage (eprom), programmable read only memory (prom), read-only storage (rom), magnetic memory, flash
Device, disk or CD.
Power supply module 506 provides electric power for the various assemblies of device 500.Power supply module 506 can include power management system
System, one or more power supplys, and other generate, manage and distribute, with for device 500, the assembly that electric power is associated.
Multimedia groupware 508 includes the screen of one output interface of offer between described device 500 and user.One
In a little embodiments, screen can include liquid crystal display (lcd) and touch panel (tp).If screen includes touch panel, screen
Curtain may be implemented as touch-screen, to receive the input signal from user.Touch panel includes one or more touch sensings
Device is with the gesture on sensing touch, slip and touch panel.Described touch sensor can not only sensing touch or sliding action
Border, but also detection and described touch or slide related duration and pressure.In certain embodiments, many matchmakers
Body assembly 508 includes a front-facing camera and/or post-positioned pick-up head.When device 500 is in operator scheme, such as screening-mode or
During video mode, front-facing camera and/or post-positioned pick-up head can receive outside multi-medium data.Each front-facing camera and
Post-positioned pick-up head can be the optical lens system of a fixation or have focusing and optical zoom capabilities.
Audio-frequency assembly 510 is configured to output and/or input audio signal.For example, audio-frequency assembly 510 includes a Mike
Wind (mic), when device 500 is in operator scheme, during as call model, logging mode and speech recognition mode, microphone is joined
It is set to reception external audio signal.The audio signal being received can be further stored in memory 504 or via communication set
Part 516 sends.In certain embodiments, audio-frequency assembly 510 also includes a loudspeaker, for exports audio signal.
, for providing interface between process assembly 502 and peripheral interface module, above-mentioned peripheral interface module can for i/o interface 512
To be keyboard, click wheel, button etc..These buttons may include but be not limited to: home button, volume button, start button and lock
Determine button.
Sensor cluster 514 includes one or more sensors, for providing the state of various aspects to comment for device 500
Estimate.For example, sensor cluster 514 can detect/the closed mode of opening of device 500, and the relative positioning of assembly is for example described
Assembly is display and the keypad of device 500, and sensor cluster 514 can be with detection means 500 or 500 1 assemblies of device
Position change, user is presence or absence of with what device 500 contacted, device 500 orientation or acceleration/deceleration and device 500
Temperature change.Sensor cluster 514 can include proximity transducer, is configured to the detection when not having any physical contact
The presence of object nearby.Sensor cluster 514 can also include optical sensor, such as cmos or ccd imageing sensor, for becoming
Use as in application.In certain embodiments, this sensor cluster 514 can also include acceleration transducer, gyro sensors
Device, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 516 is configured to facilitate the communication of wired or wireless way between device 500 and other equipment.Device
500 can access the wireless network based on communication standard, such as wifi, 2g or 3g, or combinations thereof.In an exemplary enforcement
In example, communication component 516 receives broadcast singal or the broadcast related information from external broadcasting management system via broadcast channel.
In one exemplary embodiment, described communication component 516 also includes near-field communication (nfc) module, to promote junction service.Example
As, RF identification (rfid) technology can be based in nfc module, Infrared Data Association (irda) technology, ultra broadband (uwb) technology,
Bluetooth (bt) technology and other technologies are realizing.
In the exemplary embodiment, device 500 can be by one or more application specific integrated circuits (asic), numeral letter
Number processor (dsp), digital signal processing appts (dspd), PLD (pld), field programmable gate array
(fpga), controller, microcontroller, microprocessor or other electronic components are realized, for executing above-mentioned image acquisition method.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instruction, example are additionally provided
As included the memory 504 instructing, above-mentioned instruction can be executed by the processor 520 of device 500 to complete above-mentioned picture acquisition side
Method.For example, described non-transitorycomputer readable storage medium can be rom, random access memory (ram), cd-rom, magnetic
Band, floppy disk and optical data storage devices etc..
Those skilled in the art, after considering specification and putting into practice invention disclosed herein, will readily occur to its of the disclosure
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations are followed the general principle of the disclosure and are included the undocumented common knowledge in the art of the disclosure
Or conventional techniques.Description and embodiments be considered only as exemplary, the true scope of the disclosure and spirit by following
Claim is pointed out.
It should be appreciated that the disclosure is not limited to be described above and precision architecture illustrated in the accompanying drawings, and
And various modifications and changes can carried out without departing from the scope.The scope of the present disclosure only to be limited by appended claim.
Claims (11)
1. a kind of image acquisition method is it is characterised in that methods described includes:
Obtain each frame picture that camera gathers when taking pictures preview in real time, often obtain a frame picture, open up in described frame picture
Show that the frame of equipment is identified；
When control of taking pictures is triggered, the position area that the frame finally identifying before control is triggered of taking pictures described in acquisition is limited
Domain, determine described in take pictures corresponding with the described band of position on the control original image that described camera collects when being triggered
Content, the described content determined is stored as pictures.
2. method according to claim 1 is it is characterised in that the described frame to presentation device in described frame picture is carried out
Identification, comprising:
Straight line in described frame picture is identified, obtain described in the region that formed of the straight line that identifies；
Determine, from the region being formed, the region meeting shape corresponding to described presentation device, the region determined described in acquisition
Frame.
3. method according to claim 1 is it is characterised in that the described frame to presentation device in described frame picture is carried out
Identification, comprising:
Obtain corresponding first gray value of frame of the former frame picture of described frame picture, described first gray value is described previous
The gray value summation of the pixel of the frame of frame picture；
Calculate the gray value summation with the pixel of the frame correspondence position of described former frame picture in described frame picture, be designated as
Two gray values；
When described first gray value and described second gray value difference within a predetermined range when, by the side of described former frame picture
Frame is defined as the frame of presentation device in described frame picture；
When the difference of described first gray value and described second gray value exceedes described preset range, in described frame picture
Straight line is identified, obtain described in the region that formed of the straight line that identifies；Determine from the region being formed and meet described displaying
The region of shape corresponding to equipment, the frame in the region determined described in acquisition.
4. method according to claim 1 is it is characterised in that methods described also includes:
The described frame identifying is highlighted, it is adjustable for arranging the frame highlighting；
After receiving the adjust instruction that chosen frame is adjusted, described chosen according to the adjustment of described adjust instruction
Frame position；
Described when control of taking pictures is triggered, the position that the frame finally identifying before control is triggered of taking pictures described in acquisition is limited
Put region, comprising:
When described control of taking pictures is triggered, control of taking pictures described in acquisition finally adjusts what the frame obtaining was limited before being triggered
The band of position.
5. according to described method arbitrary in Claims 1-4 it is characterised in that described using the described content determined as
One pictures are stored, comprising:
By the image stretch of the described content formation determined to the predetermined shape possessing predefined size；
Image enhancement processing is carried out to the image after stretching, described image enhancing processes and at least includes mitigating fuzzy and strengthen word
Texture；
Image after processing is stored as pictures.
6. a kind of picture acquiring device is it is characterised in that described device includes:
Identification module, is configured to obtain each frame picture that camera gathers when taking pictures preview in real time, often obtains a frame picture,
The frame of presentation device in described frame picture is identified；
Memory module, is configured to when control of taking pictures is triggered, control of taking pictures described in acquisition be triggered before described identification module
The band of position that the frame finally identifying is limited, determine described in take pictures control when being triggered described camera collect
Content corresponding with the described band of position on original image, the described content determined is stored as pictures.
7. device according to claim 6 is it is characterised in that described identification module, comprising:
First identification submodule, is configured to the straight line in described frame picture is identified, obtain described in the straight line that identifies
The region being formed；
First acquisition submodule, is configured to determine, from the region being formed, the area meeting shape corresponding to described presentation device
Domain, the frame in the region determined described in acquisition.
8. device according to claim 6 is it is characterised in that described identification module, comprising:
Second acquisition submodule, is configured to obtain corresponding first gray value of frame of the former frame picture of described frame picture,
Described first gray value is the gray value summation of the pixel of frame of described former frame picture；
Calculating sub module, is configured to calculate the pixel with the frame correspondence position of described former frame picture in described frame picture
Gray value summation, be designated as the second gray value；
Determination sub-module, is configured as described first gray value and described calculating submodule that described second acquisition submodule obtains
The difference of described second gray value that block calculates within a predetermined range when, the frame of described former frame picture is defined as described
The frame of presentation device in frame picture；
Second identification submodule, is configured as described first gray value and described calculating that described second acquisition submodule obtains
When the difference of described second gray value that submodule calculates exceedes described preset range, the straight line in described frame picture is carried out
Identification, obtain described in the region that formed of the straight line that identifies；Determine that to meet described presentation device institute right from the region being formed
Answer the region of shape, the frame in the region determined described in acquisition.
9. device according to claim 6 is it is characterised in that described device also includes:
Display module, is configured to the described frame identifying is highlighted, and it is adjustable for arranging the frame highlighting
Whole；
Adjusting module, is configured to after receiving the adjust instruction that chosen frame is adjusted, according to described adjustment
Instruction adjusts the position of described chosen frame；
Described memory module, is additionally configured to when described control of taking pictures is triggered, control of taking pictures described in acquisition be triggered before institute
State adjusting module and finally adjust the band of position that the frame obtaining is limited.
10. according to described device arbitrary in claim 6 to 9 it is characterised in that described memory module, comprising:
Stretching submodule, is configured to the image stretch of the described content formation determined to the preboarding possessing predefined size
Shape；
Process submodule, be configured to carry out image enhancement processing, described image to the image after described stretching submodule stretching
Enhancing processes and at least includes mitigating texture that is fuzzy and strengthening word；
Sub-module stored, is configured to be stored the described image processing after submodule process as pictures.
A kind of 11. picture acquiring device are it is characterised in that include:
Processor；
For storing the memory of the executable instruction of described processor；
Wherein, described processor is configured to:
Obtain each frame picture that camera gathers when taking pictures preview in real time, often obtain a frame picture, open up in described frame picture
Show that the frame of equipment is identified；
When control of taking pictures is triggered, the position area that the frame finally identifying before control is triggered of taking pictures described in acquisition is limited
Domain, determine described in take pictures corresponding with the described band of position on the control original image that described camera collects when being triggered
Content, the described content determined is stored as pictures.
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