CN102843506A - Camera system and image shooting and synthesizing method thereof - Google Patents

Camera system and image shooting and synthesizing method thereof Download PDF

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Publication number
CN102843506A
CN102843506A CN2011101729462A CN201110172946A CN102843506A CN 102843506 A CN102843506 A CN 102843506A CN 2011101729462 A CN2011101729462 A CN 2011101729462A CN 201110172946 A CN201110172946 A CN 201110172946A CN 102843506 A CN102843506 A CN 102843506A
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CN
China
Prior art keywords
image
light source
those
camera
images
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CN2011101729462A
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Chinese (zh)
Inventor
陈建州
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瑞轩科技股份有限公司
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Priority to CN2011101729462A priority Critical patent/CN102843506A/en
Publication of CN102843506A publication Critical patent/CN102843506A/en

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Abstract

The invention relates to a camera system and an image shooting and synthesizing method thereof. The image shooting and synthesizing method comprises the steps of: controlling lighting ranges of a light source according to a preset sequence, shooting a target object to be shot in lighting periods within different lighting ranges to obtain a plurality of reference images, and processing the reference images to obtain a synthetic image.

Description

Camera chain and filming image thereof and synthetic method
Technical field
The present invention relates to a kind of camera chain and filming image thereof and synthetic method, relate in particular to a kind of camera chain and filming image and synthetic method of improving the filmed image details.
Background technology
The technology of electron image is in advancing by leaps and bounds in recent years; And it is superior that the sense electronics optical element is made; So make the numerous and confused birth of product of many application digital images, such as digital camera, DV and camera (PC Camera) ... etc., by these a little digital image products; Just can dynamic or static image be done a storage with the mode of digital electric data, and can show by various displays (as: computer screen, TV).
General camera on the market owing to the complexity of shooting environmental, photographic subjects and background light source, makes filmed image often have under-exposed or excessive situation to take place, thereby can't obtain gratifying result when filmed image.Existing improvement method is to utilize to add the light source that light source improves shooting environmental, for example on camera, installs photoflash lamp additional, and control adds the variation of the intensity of light source when filmed image, to improve shooting effect.The image that right the method will make image be created in prospect and background with the difference of the intensity of light source produces different shooting effects.When the intensity of light source was strong, the image of the image definition of background and prospect was because luminous intensity too strong (over-exposed) and make image unintelligible; When a little less than the intensity of light source, the image definition of prospect and the image of background makes image unintelligible because luminous intensity is too weak.
Summary of the invention
The present invention provides a kind of camera chain and filming image and synthetic method, and it is over-exposed or not enough effectively to improve filmed image, influences the situation of filmed image details.
The present invention proposes a kind of camera chain, comprises at least one light source, a camera unit and an image synthesis unit.Wherein light source has different illumination zones.Camera unit couples light source, according to the illumination zone of preset order control light source, and in light source each different illumination zones throw light on during take a target and take thing, a plurality of to obtain with reference to image.The image synthesis unit couples camera unit, a plurality ofly obtains a resultant image with reference to image carries out an image computing with above-mentioned.
In one embodiment of this invention, above-mentioned image synthesis unit is a plurality ofly selected a reference images in reference to image from above-mentioned, and reference images is deducted other with reference to image, to obtain resultant image.
In one embodiment of this invention, above-mentioned image synthesis unit is with above-mentioned a plurality of with reference to the image addition, to obtain resultant image.
The present invention also proposes a kind of filming image and synthetic method of camera chain, and wherein camera chain comprises at least one light source, and light source has different illumination zones.Filming image and synthetic method comprise the following steps.Illumination zone according to preset order control light source.During each different illumination zones are thrown light on, take a target in light source and take thing, a plurality of to obtain with reference to image.A plurality ofly, image obtains a resultant image to above-mentioned with reference to carrying out an image computing.
In one embodiment of this invention, above-mentioned image computing comprises an image additive operation and an image sum operation.
In one embodiment of this invention, above-mentioned a plurality of steps of carrying out the image computing with reference to image are comprised the following steps.A plurality ofly select a reference images in reference to image from above-mentioned.Reference images is deducted other with reference to image.
In one embodiment of this invention, above-mentioned a plurality of steps of carrying out the image computing with reference to image are comprised above-mentioned a plurality of with reference to the image addition.
In one embodiment of this invention, above-mentioned reference images is above-mentioned a plurality of one of which with reference to the reference image of exposure in a preset range of target shooting thing in the image, or target is taken the highest reference image of exposure of thing.
Based on above-mentioned; The present invention is according to the illumination zone of preset order control light source, and photographic subjects is taken thing during the illumination of each different illumination zones, and is a plurality of with reference to image to obtain; And this is carried out image processing with reference to image a bit, to obtain resultant image clearly.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs. elaborates as follows.
Description of drawings
Fig. 1 is the sketch map of the camera chain of one embodiment of the invention.
Fig. 2 is the filming image and the synthetic method flow chart of the camera chain of one embodiment of the invention.
Fig. 3 A~Fig. 3 E is filming image and the sketch map of synthetic method of the camera chain of the embodiment of the invention.
Reference numeral:
100,300: camera chain
102, L1, L2: light source
104,302: camera unit
106: the image synthesis unit
108: display
S202~S206: the step of filming image and synthetic method
Embodiment
Fig. 1 is the sketch map of the camera chain of one embodiment of the invention.Please with reference to Fig. 1, camera chain 100 comprises a plurality of light source 102, a camera unit 104 and an image synthesis unit 106.Wherein camera unit 104 couples each light source 102 and image synthesis unit 106, and image synthesis unit 106 then is coupled to a display 108.Wherein camera chain 100 can for example be camera, video camera, the TV that video camera is housed, web camera or other photographic goods.Above-mentioned a plurality of light source 102 can be controlled by camera chain 100 far-ends, and has functions such as different illumination zones or illumination intensity respectively, takes thing and environment in order to the target that the illumination desire is taken.Light source 102 can for example be arranged at the diverse location of taking place (for example indoor) respectively, so that light source 102 can throw light on to the different depth of field.
Camera unit 104 is according to the open and close of preset order control light source 102, and in each light source 102 each different illumination zones throw light on during photographic subjects take thing, a plurality of to obtain with reference to image.Wherein the preset order of open and close control light source 102 can be determined according to the practical application situation by the user.Because a plurality of light sources 102 are arranged; When using camera unit 104 for the first time, the user maybe and not know to open which light source and filmed image has preferable effect; Therefore can be in first time during filmed image; Control the image that light source opened and took the corresponding light source effect in turn by the user, according to shooting results, the user can determine the preferred order of light source 102 open and close as preset order; And, carry out filming image with this preset order control light source 102 afterwards by camera unit 104 these preset order of memory.That is to say, only when using camera chain 100 filmed images for the first time, just can select to set the preset order that opens and closes light source 102, then do not need to set again light source keying order when desire is used camera chain 100 filmed images afterwards.
Further, the illumination of light source 102 adjustment can be described below.Before photography beginning, can open simultaneously through camera unit 104 all light sources of control earlier, to judge that target object is whether in the illumination zone of light source 102.Follow and select to open a near light source 102 of target object, and other light source 102 is closed, and take an image,, check whether the exposure of the target shooting thing that is taken is enough with according to the information on the image.To represent that then target is taken object distance light source 102 too far away if target is taken the exposure deficiency of thing, this moment the movable object object near this light source 102, or the light source 102 of attempting selecting opening other is up to the light source that finds preferable exposure.On the contrary, if object over-exposed then is that the expression object is too near apart from light source 102, then can move apart light source 102 with object this moment, or the light source 102 of attempting selecting opening other is finding the light source of preferable exposure.
It should be noted that present embodiment is to utilize the position of adjusting a plurality of light sources 102 to control the scope of illumination, so in fact not as limit.In part embodiment, also can control the scope of illumination by the illumination direction of control light source 102, the number of light source 102 also can be adjusted according to practical situation in addition.For example can adjust illumination zone by the illumination direction of control single light source 102 is prospect or background.
In addition, image synthesis unit 106 shows and export it to display 108 in order to the captured reference image that goes out of camera unit 104 is carried out the image computing and obtains a resultant image.Wherein, the image computing can for example be image additive operation or image sum operation.For instance, image synthesis unit 106 can from a plurality of select in reference to image one with reference to image as reference images, and this reference images deducted other is remaining with reference to image, and obtains resultant image.
Wherein reference images can be selected according to the exposure of taking thing with reference to target in the image; For example can select the one of which of taking the reference image of exposure in a preset range of thing with reference to target in the image, or a plurality of the highest reference image of exposure of taking thing with reference to target in the image.But and just have the object of taking the different depth of field of thing with target in the obfuscation resultant image, and then highlight target shooting thing by the reference image that reference images is deducted other.In addition in other embodiments, also can be by carrying out addition with reference to image, to strengthen the scenery details of resultant image with a plurality of.It should be noted that when utilizing above-mentioned camera chain 100 to take, as long as target is taken thing move to the suitable position of exposure, still can be image clearly after many synthesized with reference to image.Do not need mobile object to arrive absolute optimum position.
As stated; By the open and close of controlling a plurality of light sources according to a preset order, and photographic subjects is taken thing during the illumination of each different illumination zones, and is a plurality of with reference to image to obtain; And this is carried out image processing with reference to image a bit according to actual demand; Just can obtain resultant image clearly, avoid as prior art, only taking an image, and appearance causes the unfavorable situation of image quality because of the adjustment of luminous intensity is improper easily.
Fig. 2 is the filming image and the synthetic method flow chart of the camera chain of one embodiment of the invention.Please with reference to Fig. 2, in sum, the filming image of camera chain and synthetic method can comprise the following steps.At first, control the illumination zone (step S202) of light source according to a preset order.Wherein the quantity of light source can be one or morely, and the mode of the illumination zone of control light source can be for example be the illumination direction of control light source or the open and close order of control light source.Then, during each different illumination zones are thrown light on, take a target in light source and take thing, a plurality of to obtain with reference to image (step S204).Then, this with reference to carrying out an image computing, image is obtained a resultant image (step S206) a bit.Wherein the image computing can for example be image additive operation or image sum operation.For example can select a reference images in reference to image, again reference images deducted other remaining resultant image that obtains with reference to image, also or with a plurality of modes obtain resultant image with reference to the image addition from a plurality of.
Fig. 3 A~Fig. 3 E is filming image and the sketch map of synthetic method of the camera chain of the embodiment of the invention.Below will illustrate when camera chain has two light sources the filming image of camera chain and synthetic method.In the embodiment of Fig. 3 A~Fig. 3 E; Camera chain 300 comprises two light source L1 and L2, camera unit 302 and image synthesis unit (not shown); And the object that is taken is behaved and chair, and wherein artificial target is taken thing (it is a prospect concerning camera unit 302, and chair then as a setting).Of above-listed embodiment, at first, according to the illumination zone of preset order control light source.In Fig. 3 A, control light source L1 opens and light source L2 closes, so the people will have enough exposure intensities, the exposure intensity of chair then a little less than.So in the captured reference image that goes out of camera unit 302, people's image will be than the image definition of chair (that is prospect is clear than background, and background is comparatively fuzzy).Similarly, when control light source L2 opens and light source L1 when closing (shown in Fig. 3 B), chair will have enough exposure intensities, people's exposure intensity then a little less than.So in the captured reference image that goes out of camera unit 302, the image of chair will be than people's image definition (that is background is clear than background, and prospect is comparatively fuzzy).
Then, utilize the image synthesis unit to carry out the image computing to obtain resultant image with reference to image in Fig. 3 A and Fig. 3 B, obtained two.Wherein if the reference image that the reference image that the image synthesis unit is obtained Fig. 3 A and Fig. 3 B are obtained is done the image sum operation, resulting resultant image effect can be shown in Fig. 3 C.The image detail of people and chair will be more clear all, that is the object details of forward and backward scape all is reinforced, and demonstrate finer image.
And if the image synthesis unit is done the image additive operation with image that Fig. 3 A obtained for the image that is obtained with reference to image and Fig. 3 B, resulting resultant image effect can be shown in Fig. 3 D.It is fuzzy that people's image (that is image of prospect) details people's in Fig. 3 A image detail shows slightly; The image of chair (that is image of background) details is then fuzzy many than the image detail of chair among Fig. 3 A, thereby people's image is highlighted in resultant image.
Similarly, if the image synthesis unit is done the image additive operation with image that Fig. 3 B obtained for the image that is obtained with reference to image and Fig. 3 A, resulting resultant image effect can be shown in Fig. 3 E.It is fuzzy that the image of chair (that is image of background) details people's in Fig. 3 B image detail shows slightly; People's's (that is image of prospect) image detail is then fuzzy many than the image detail of chair among Fig. 3 B, thereby the image of chair is highlighted in resultant image.
As stated, the user can select suitable image synthesis mode to obtain resultant image according to the practical application situation.For example when the foregoing description is applied in video calling; If the environment arround the user does not hope when carrying out video calling is seen by the other side; Can take the image processing mode of Fig. 3 D, the obfuscation background video, and be unlikely to together with user's image in the lump by obfuscation and can't identification.
In sum, the present invention is according to the illumination zone of preset order control light source, and in light source each different illumination zones throw light on during photographic subjects take thing, a plurality of to obtain with reference to image.And, can reach and strengthen target and take thing image detail and blurred background, or strengthen the overall image details and make effects such as image is more clear by this is carried out image processing with reference to image a bit.
Though the present invention discloses as above with embodiment, so it is not in order to limiting the present invention, any under the those of ordinary skill of technical field, when can doing a little change and retouching, and do not break away from the spirit and scope of the present invention.

Claims (10)

1. camera chain comprises:
At least one light source has different illumination zones;
One camera unit couples this light source, according to the illumination zone of this light source of preset order control, and in this light source each different illumination zones throw light on during take a target and take thing, a plurality of to obtain with reference to image; And
One image synthesis unit couples this camera unit, and those are obtained a resultant image with reference to image carries out an image computing.
2. camera chain according to claim 1, wherein this image computing comprises an image additive operation and an image sum operation.
3. camera chain according to claim 2, wherein this image synthesis unit is selected a reference images from those in reference to image, and with this reference images deduct other those with reference to image, to obtain this resultant image.
4. camera chain according to claim 3, wherein this reference images is those exposure those one of which with reference to image in a preset range with reference to this target shooting thing in the image, or this target is taken the highest reference image of exposure of thing.
5. camera chain according to claim 2, wherein this image synthesis unit with those with reference to the image addition, to obtain this resultant image.
6. the filming image of a camera chain and synthetic method, this camera chain comprises at least one light source, and this light source has different illumination zones, and filming image and synthetic method comprise:
Illumination zone according to this light source of preset order control;
During each different illumination zones are thrown light on, take a target in this light source and take thing, a plurality of to obtain with reference to image; And
Those with reference to carrying out an image computing, image are obtained a resultant image.
7. filming image according to claim 6 and synthetic method, wherein this image computing comprises an image additive operation and an image sum operation.
8. filming image according to claim 7 and synthetic method wherein comprise those with reference to the step that image carries out this image computing:
Select a reference images from those in reference to image; And
With this reference images deduct other those with reference to image.
9. filming image according to claim 8 and synthetic method; Wherein this reference images is those exposure those one of which with reference to image in a preset range with reference to this target shooting thing in the image, or those take the highest reference image of exposure of thing with reference to this target in the image.
10. filming image according to claim 7 and synthetic method wherein comprise those with reference to the image addition with reference to the step that image carries out this image computing those.
CN2011101729462A 2011-06-24 2011-06-24 Camera system and image shooting and synthesizing method thereof CN102843506A (en)

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CN104092955A (en) * 2014-07-31 2014-10-08 北京智谷睿拓技术服务有限公司 Flash control method and device, as well as image acquisition method and equipment
CN112135043A (en) * 2020-09-21 2020-12-25 珠海格力电器股份有限公司 Method and apparatus for synthesizing photograph, storage medium, and electronic apparatus

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CN101420531A (en) * 2007-10-23 2009-04-29 鸿富锦精密工业(深圳)有限公司 High dynamic range photo acquisition apparatus and method
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