CN105744158A - Video image display method and device and mobile terminal - Google Patents
Video image display method and device and mobile terminal Download PDFInfo
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- CN105744158A CN105744158A CN201610077013.8A CN201610077013A CN105744158A CN 105744158 A CN105744158 A CN 105744158A CN 201610077013 A CN201610077013 A CN 201610077013A CN 105744158 A CN105744158 A CN 105744158A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000000007 visual effect Effects 0.000 claims description 108
- 238000001514 detection method Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/62—Control of parameters via user interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
Abstract
The invention discloses a video image display method and device and a mobile terminal. The method comprises following steps of when a photographed video is detected, obtaining continuous video frame images in preset time; obtaining a first distance between a photographed object and a camera when the first video frame image of the continuous video frame images is photographed; obtaining a second distance between the photographed object and the camera when the last video frame image of the continuous video frame images is photographed; according to the relationship between the first distance and a telephoto end distance threshold value and the relationship between the second distance and the telephoto end distance threshold value, determining field angles used for displaying the continuous video frame images; and displaying the continuous video frame images according to determined results. According to the method, the device and the mobile terminal, the continuous video frame images are displayed through switching the field angles according to the difference of the distances between the photographed object and the camera; the video frame images of different field angles are displayed in one segment of video; and therefore, distortion of the photographed object is avoided.
Description
Technical field
The present embodiments relate to video display technology, particularly relate to method, device and mobile terminal that a kind of video image shows.
Background technology
When recorded video, having two kinds of scenes very conventional, a kind of scene is to clap portrait specially, and one is to clap people and large scene, different camera lenses generally can be adopted to shoot in the middle of the process of specialty shooting: during shooting portrait, uses telephoto lens to control distortion；Shooting people adopts wide-angle lens to shoot with large scene is combined time.Wherein, the angle of visual field of telephoto lens is less, and the angle of visual field of wide-angle lens is bigger.
Often occur when shooting film by the switching reaching camera lens of focusing, but most of mobile terminal only one of which tight shot, in the middle of reality, often problem appear to is that the choice of Radix Rumicis and focal length.When recorded video time, the video frame images of Radix Rumicis or the video frame images of focal length can only be shown in the middle of the one section of video recorded simultaneously, and the switching of Radix Rumicis and focal length can not be realized, the video frame images of the different angle of visual field namely can not be shown when the video that display is recorded.
Summary of the invention
In view of this, the embodiment of the present invention provides method, device and the mobile terminal that a kind of video image shows, to realize showing the video frame images of the different angle of visual field in one section of video.
First aspect, embodiments provides a kind of method that video image shows, described method includes:
When shooting video being detected, obtain the continuous videos two field picture in Preset Time；
Obtain shoot described continuous videos two field picture the first frame video frame images time subject and photographic head between the first distance, and obtain shoot described continuous videos two field picture last frame video frame images time subject and photographic head between second distance；
According to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts；
According to determining that result shows described continuous videos two field picture.
Second aspect, the embodiment of the present invention additionally provides the device that a kind of video image shows, described device includes:
Video image acquisition module, for when shooting video being detected, obtaining the continuous videos two field picture in Preset Time；
Shooting distance acquisition module, for obtain shoot described continuous videos two field picture the first frame video frame images time subject and photographic head between the first distance, and obtain shoot described continuous videos two field picture last frame video frame images time subject and photographic head between second distance；
The angle of visual field determines module, for according to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts；
Video image display module, for according to determining that result shows described continuous videos two field picture.
The third aspect, the embodiment of the present invention additionally provides a kind of mobile terminal, including photographic head, also includes the device that the video image described in any embodiment of the present invention shows.
The technical scheme of the embodiment of the present invention, by when shooting video, obtain the continuous videos two field picture in Preset Time, and obtain shoot the first frame video frame images time subject and photographic head between the first distance, and shoot last frame video frame images time subject and photographic head between second distance, according to described first distance and second distance respectively with the relation of focal length end distance threshold values, determine the angle of visual field showing that described continuous videos two field picture adopts, and according to determining that result shows described continuous videos two field picture, achieve and switch angle of visual field display continuous videos two field picture according to subject is different from the distance of photographic head, achieve the video frame images showing the different angles of visual field in one section of video, thus avoiding the distortion of subject.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method that a kind of video image that the embodiment of the present invention one provides shows；
Fig. 2 is the flow chart of the method that a kind of video image that the embodiment of the present invention two provides shows；
Fig. 3 is the flow chart of the method that a kind of video image that the embodiment of the present invention three provides shows；
Fig. 4 is the structural representation of the device that a kind of video image that the embodiment of the present invention four provides shows.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.It is understood that specific embodiment described herein is used only for explaining the present invention, but not limitation of the invention.It also should be noted that, for the ease of describing, accompanying drawing illustrate only part related to the present invention but not full content.
Embodiment one
Fig. 1 is the flow chart of the method that a kind of video image that the embodiment of the present invention one provides shows, the present embodiment is applicable to the situation that subject carries out angle of visual field switching when shooting video, the device that the method can be shown by video image performs, the device that this video image shows can be integrated in mobile terminal, specifically includes following steps:
Step 110, when shooting video being detected, obtains the continuous videos two field picture in Preset Time.
User, when needing to record to some scene is interested, can be first turned on camera, then open video record function.By the icon of camera, mobile terminal can detect that user opens the function of camera, and the image captured by photographic head carries out preview and shows, detect that user opens the function of video record by the button of video record or button, namely detect user and need shooting video, receiving after user clicks the order recording button, obtain the continuous videos two field picture in Preset Time.
Step 120, obtain shoot described continuous videos two field picture the first frame video frame images time subject and photographic head between the first distance, and obtain shoot described continuous videos two field picture last frame video frame images time subject and photographic head between second distance.
When shooting the first frame video frame images of described continuous videos two field picture, obtain the first distance between subject and photographic head；When shooting the last frame video frame images of described continuous videos two field picture, obtain the second distance between subject and photographic head, in order to determine the angle of visual field showing that described continuous videos two field picture adopts subsequently through the first distance and second distance.
Wherein, the mode obtaining described first distance and second distance obtains preferably by phase-detection auto-focusing (PhaseDetectionAutoFocus, PDAF) or laser module.
Wherein, described subject is preferably face, and focal length photographic head is relatively suitable for shooting character image, it is possible to avoid the distortion of face.
Step 130, according to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts.
Wherein, the angle of visual field is also called visual field, in optical instrument, with the camera lens of optical instrument for summit, can pass through the angle that two edges of the maximum magnitude of camera lens are constituted with the image of measured target, be called the angle of visual field.The size of the angle of visual field determines the field range of optical instrument, and the angle of visual field is more big, and the visual field is more big, and optical power is more little.
Generally, the angle of visual field is that the more big focal length of the angle of visual field is more short with the relation of focal length.The tele lens angle of visual field is generally narrower than 40 °, for instance: lens focus 2.5 millimeters, the angle of visual field is about 45 degree；Lens focus 5.0 millimeters, the angle of visual field is about 23 degree；Lens focus 7.5 millimeters, the angle of visual field is about 14 degree；Lens focus 10 millimeters, the angle of visual field is about 12 degree；Lens focus 15 millimeters, the angle of visual field is about 8 degree.
In embodiments of the present invention, the angle of visual field may be considered the virtual angle of visual field, because photographic head is cameras with fixed focus in the terminal, here it is that the video frame images adopting this cameras with fixed focus to get is processed, is adopt the different angles of visual field to record to realize the image of display when display.Hardware characteristics according to photographic head, two set patterns can be preset: preset Radix Rumicis pattern and default focal length pattern, presetting Radix Rumicis pattern can adopt the image that photographic head captures not carry out processing namely showing, the image that photographic head to be captured by default focal length pattern carries out cutting process, cuts out subregion therein and displays.Preset Radix Rumicis pattern and may be considered the image that display wide-angle camera photographs, be suitable for shooting landscape works；Preset focal length pattern and may be considered the image that display focal length photographic head photographs, be suitable for shooting the target object being in cluttered environment.The angle of visual field presetting Radix Rumicis pattern is relatively large, and the angle of visual field presetting focal length pattern is relatively small.Presetting the corresponding first preset field of view angle of Radix Rumicis pattern, preset the corresponding second preset field of view angle of focal length pattern, therefore, described first preset field of view angle is more than described second preset field of view angle.
When distance between subject and photographic head is less than described focal length end distance threshold values, adopts default focal length pattern to show the image photographed, namely adopt the second preset field of view angle to show；When distance between subject and photographic head is more than described focal length end distance threshold values, adopts default focal length pattern to show the image photographed, namely adopt the first preset field of view angle to show.
When described first distance and second distance is respectively less than or equal to focal length end distance threshold values time, it is determined that show that the angle of visual field that described continuous videos two field picture adopts is the second preset field of view angle；When described first distance and second distance are all higher than focal length end distance threshold values, it is determined that show that the angle of visual field that described continuous videos two field picture adopts is the first preset field of view angle；When described first distance is less than or equal to focal length end distance threshold values, when second distance is more than focal length end distance threshold values, determine with the first frame video frame images that second angle of visual field shows in described continuous videos two field picture, the last frame video frame images in described continuous videos two field picture is shown with first angle of visual field, in continuous videos two field picture, the video frame images except the first frame video frame images and last frame video frame images can adopt first angle of visual field, second angle of visual field can also be adopted, it is also possible to adopt the angle of visual field between first angle of visual field and second angle of visual field；When described first distance is more than focal length end distance threshold values, when second distance is less than or equal to focal length end distance threshold values, determine with the first frame video frame images that first angle of visual field shows in described continuous videos two field picture, the last frame video frame images in described continuous videos two field picture is shown with second angle of visual field, in continuous videos two field picture, the video frame images except the first frame video frame images and last frame video frame images can adopt first angle of visual field, second angle of visual field can also be adopted, it is also possible to adopt the angle of visual field between first angle of visual field and second angle of visual field.
Step 140, according to determining that result shows described continuous videos two field picture.
According to the angle of visual field that the every frame video frame images in the continuous videos two field picture determined adopts when display, corresponding video frame images is carried out cutting process, and shows the indication range in the determined video frame images of the angle of visual field.Here display refer to preview show and video preserve after display.
Wherein, according to determining that result shows described continuous videos two field picture, it is preferable that including:
According to the angle of visual field that the video frame images shown in described continuous videos two field picture determined adopts, determine the viewing area of described video frame images successively；
Extract the video frame images in described viewing area successively, and be amplified to the size of described video frame images；
Show the video frame images after processing successively.
The focal length of the photographic head of mobile terminal is certain value, the angle of visual field of the video frame images then got also determines that, combining the angle of visual field that the video frame images shown in described continuous videos two field picture determined adopts, may determine that the viewing area of each frame video frame images (i.e. viewing area centered by the center of this frame video frame images), extracting the video frame images in viewing area and be amplified to the size of described video frame images, the video frame images after process is exactly the video frame images at respective field of vision angle when display.
If the nearer target object of shooting distance photographic head still uses the cameras with fixed focus of mobile terminal to shoot, and directly display when display target object can be made to produce distortion, each frame video frame images angle of visual field of adopting when display just can avoid the occurrence of distortion to adopt the present embodiment to determine.
The technical scheme of the present embodiment, by when shooting video, obtain the continuous videos two field picture in Preset Time, and obtain shoot the first frame video frame images time subject and photographic head between the first distance, and shoot last frame video frame images time subject and photographic head between second distance, according to described first distance and second distance respectively with the relation of focal length end distance threshold values, determine the angle of visual field showing that described continuous videos two field picture adopts, and according to determining that result shows described continuous videos two field picture, achieve and switch angle of visual field display continuous videos two field picture according to subject is different from the distance of photographic head, achieve the video frame images showing the different angles of visual field in one section of video, thus avoiding the distortion of subject.
Embodiment two
Fig. 2 is the flow chart of the method that a kind of video image that the embodiment of the present invention two provides shows, the present embodiment is on the basis of embodiment one, to " according to described first distance and second distance respectively with the relation of focal length end distance threshold values; determine the angle of visual field showing that described continuous videos two field picture adopts " be optimized, specifically include following steps:
Step 210, when shooting video being detected, obtains the continuous videos two field picture in Preset Time.
Step 220, obtain shoot described continuous videos two field picture the first frame video frame images time subject and photographic head between the first distance, and obtain shoot described continuous videos two field picture last frame video frame images time subject and photographic head between second distance.
Step 230, the relation according to described first distance with focal length end distance threshold values, it is determined that show described first frame video frame images with the first preset field of view angle or the second preset field of view angle.
If described first distance is less than or equal to focal length end distance threshold values, it is determined that show the first frame video frame images in described continuous videos two field picture with the second preset field of view angle；If described first distance is more than focal length end distance threshold values, it is determined that show described first frame video frame images with the first preset field of view angle, the scene of shooting is so made more to have shock sense.Wherein, described first angle of visual field is more than described second preset field of view angle.
Step 240, the relation according to described second distance with focal length end distance threshold values, it is determined that show described last frame video frame images with the first preset field of view angle or the second preset field of view angle.
If described second distance is less than or equal to focal length end distance threshold values, it is determined that show the last frame video frame images in described continuous videos two field picture with the second preset field of view angle；If described second distance is more than focal length end distance threshold values, it is determined that show described last frame video frame images with the first preset field of view angle.
Step 250, it is determined that relative multiplying power during with the first preset field of view angle in the described angle of visual field with the second preset field of view angle shooting image.
Owing to the real focal length of the photographic head of mobile terminal is certain, when then showing, with the first preset field of view angle or the second preset field of view angle, the video frame images photographed, need the video frame images to show is carried out cutting process, just can show the video frame images at respective field of vision angle, owing to the first preset field of view angle and the second preset field of view angle are all definite values, thus may determine that with the first preset field of view angle with second preset field of view angle shoot image time relative multiplying power.
Step 260, according to described relative multiplying power and Preset Time, it is determined that switching rate when switching to the second preset field of view angle from the first preset field of view angle or switch to the first preset field of view angle from the second preset field of view angle.
When the first frame video frame images of continuous videos two field picture is different with the angle of visual field that last frame video frame images adopts when display, needing smooth for the first frame video frame images shown with the first preset field of view angle or the second preset field of view angle is switched to the last frame video frame images shown with the second preset field of view angle or the first preset field of view angle, this is accomplished by determining switching rate when switching to the second preset field of view angle from the first preset field of view angle or switch to the first preset field of view angle from the second preset field of view angle.Since it is determined with the first preset field of view angle with second preset field of view angle shoot image time relative multiplying power, and the shooting time of continuous videos two field picture and Preset Time are default definite values, therefore easy described switching rate must can be determined, show multiplying power during image in conjunction with the first preset field of view angle or the second preset field of view angle, then easily determine the multiplying power when display of the video frame images between the first frame video frame images and last frame video frame images.
Step 270, according to described switching rate, determine show the angle of visual field that adopts of described first frame video frame images and show the angle of visual field that described last frame video frame images adopts, it is determined that the angle of visual field that the video frame images shown in described continuous videos two field picture except the first frame video frame images and last frame video frame images adopts.
When the angle of visual field showing that the first frame video frame images adopts is identical with the angle of visual field that display last frame video frame images adopts, it is determined that show that the angle of visual field that the video frame images between the first frame video frame images and last frame video frame images adopts is also identical with the angle of visual field that the first frame video frame images and last frame video frame images adopt；When the angle of visual field showing that the first frame video frame images adopts is different with the angle of visual field that display last frame video frame images adopts, then according to described switching rate, and first preset field of view angle or the second preset field of view angle display image time multiplying power, then may determine that the multiplying power when display of each frame video frame images between the first frame video frame images and last frame video frame images, may thereby determine that the angle of visual field that this each frame video frame images adopts when display.
Step 280, according to determining that result shows described continuous videos two field picture.
nullThe technical scheme of the present embodiment，By first determining, according to the first distance, the angle of visual field that display the first frame video frame images adopts，The angle of visual field that display last frame video frame images adopts is determined according to second distance，When showing that the first frame video frame images is different with the angle of visual field that last frame video frame images adopts，Determine that after switching to the second preset field of view angle from the first preset field of view angle or determine from the second preset field of view angle be switching rate during the first preset field of view angle，May thereby determine that the angle of visual field that the video frame images between display the first frame video frame images and last frame video frame images adopts，Achieve and take over seamlessly to the video frame images shown with second angle of visual field from the video frame images shown with the first preset field of view angle，Or take over seamlessly to the video frame images shown with the first preset field of view angle from the video frame images shown with the second preset field of view angle，Avoid the sudden change when display.
Embodiment three
Fig. 3 is the flow chart of the method that a kind of video image that the embodiment of the present invention three provides shows, the present embodiment is on the basis of above-described embodiment, it is also preferred that include " at described shooting video for, in time shooting the video, recording described first distance and second distance, and save as distance；Described distance in statistics Preset Time, it is determined that shooting number of times is more than the minima of the described distance of preset times and maximum；According to described minima and maximum, described focal length end distance threshold values is adjusted ", specifically include following steps:
Step 310, when shooting video being detected, obtains the continuous videos two field picture in Preset Time.
Step 320, obtain shoot described continuous videos two field picture the first frame video frame images time subject and photographic head between the first distance, and obtain shoot described continuous videos two field picture last frame video frame images time subject and photographic head between second distance.
Step 330, according to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts.
Step 340, according to determining that result shows described continuous videos two field picture.
Step 350, at described shooting video for, in time shooting the video, recording described first distance and second distance, and save as distance.
Owing to user is when autodyning, the brachium of each user is different, and (brachium such as Yao Ming is longer than the brachium of general user, and its face is also big than the face of general user), such a focal length end distance threshold values determined fine cannot must be suitable for each user, therefore can according to the record adjusted the distance when autodyning, focal length end distance threshold values is adjusted, with the user of applicable different brachiums.Certainly, when autodyning, the first distance and second distance also need to more than the recognizable distances of face, because now subject is face, the video frame images only recognizing face shooting is just meaningful.
Step 360, the described distance in statistics preset time period, it is determined that shooting number of times is more than the minima of the described distance of preset times and maximum.
This preset time period can be set to one week or one month etc., this preset time period can comprise above-mentioned repeatedly Preset Time, thus in for a long time distance record, the distance of record being added up, to count shooting number of times more than the minima of the distance of preset times and maximum.
Step 370, according to described minima and maximum, is adjusted described focal length end distance threshold values.
According to described minima and maximum, it may be determined that the length (time as bigger in maximum, the brachium of user is longer) of the brachium of user, when the brachium of user is longer, described focal length end distance threshold values is suitably increased certain numerical value；When the brachium of user is shorter, described focal length end distance threshold values is suitably reduced certain numerical value.The concrete numerical value increased or reduce can determine (data increased or reduce can be as described in minima or the 1/2 of this minima, 1/5 etc.) according to described minima.So that next time is when certainly shooting the video, the angle of visual field adopted when determining frame of display video image by the focal length end distance threshold values after adjusting.
The technical scheme of the present embodiment is on the basis of above-described embodiment, by adding up the shooting distance in preset time period when certainly shooting the video, and this shooting distance is added up, obtain shooting number of times more than the minima of this distance of preset times and maximum, thus focal length end distance threshold values is adjusted, with the user of applicable different brachiums.
Embodiment four
Fig. 4 is the structural representation of the device that a kind of video image that the embodiment of the present invention four provides shows, as shown in Figure 4, the device that the video image described in the present embodiment shows includes: video image acquisition module 410, shooting distance acquisition module 420, the angle of visual field determine module 430 and video image display module 440.
Wherein, video image acquisition module 410 is for when shooting video being detected, obtaining the continuous videos two field picture in Preset Time；
Shooting distance acquisition module 420 is for obtaining when shooting the first frame video frame images of described continuous videos two field picture the first distance between subject and photographic head, and obtains when shooting the last frame video frame images of described continuous videos two field picture the second distance between subject and photographic head；
The angle of visual field determine module 430 for according to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts；
Video image display module 440 is for according to determining that result shows described continuous videos two field picture.
Preferably, the described angle of visual field determine module 430 specifically for:
Relation according to described first distance with focal length end distance threshold values, it is determined that show described first frame video frame images with the first preset field of view angle or the second preset field of view angle；
Relation according to described second distance with focal length end distance threshold values, it is determined that show described last frame video frame images with the first preset field of view angle or the second preset field of view angle；
Determine with the first preset field of view angle in the described angle of visual field with second preset field of view angle shoot image time relative multiplying power；
According to described relative multiplying power and Preset Time, it is determined that switching rate when switching to the second preset field of view angle from the first preset field of view angle or switch to the first preset field of view angle from the second preset field of view angle；
According to described switching rate, determine show the angle of visual field that adopts of described first frame video frame images and show the angle of visual field that described last frame video frame images adopts, it is determined that the angle of visual field that the video frame images shown in described continuous videos two field picture except the first frame video frame images and last frame video frame images adopts；
Wherein, described first angle of visual field is more than described second angle of visual field.
Preferably, described video image display module 440 specifically for:
According to the angle of visual field that the video frame images shown in described continuous videos two field picture determined adopts, determine the viewing area of described video frame images successively；
Extract the video frame images in described viewing area successively, and be amplified to the size of described video frame images；
Show the video frame images after processing successively.
Preferably, described shooting distance acquisition module obtains the mode of described first distance and second distance for be obtained by phase-detection auto-focusing or laser module.
Preferably, also include:
Shooting distance preserves module, for when described shooting video is for certainly shooting the video, recording described first distance and second distance, and save as distance；
Shooting distance statistical module, for adding up described distance in preset time period, it is determined that shooting number of times is more than the minima of the described distance of preset times and maximum；
Focal length threshold values adjusting module, for according to described minima and maximum, being adjusted described focal length end distance threshold values.
Wherein, described subject is preferably face.
The method that the video image that the device that above-mentioned video image shows can perform any embodiment of the present invention and provides shows, possesses the corresponding functional module of execution method and beneficial effect.
Embodiment five
The embodiment of the present invention five provides a kind of mobile terminal, and this mobile terminal includes photographic head, and the device that the video image that also including any embodiment of the present invention provides shows possesses the beneficial effect of the device that video image shows.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention being described in further detail by above example, but the present invention is not limited only to above example, when without departing from present inventive concept, other Equivalent embodiments more can also be included, and the scope of the present invention is determined by appended right.
Claims (13)
1. the method that a video image shows, it is characterised in that described method includes:
When shooting video being detected, obtain the continuous videos two field picture in Preset Time；
Obtain shoot described continuous videos two field picture the first frame video frame images time subject and photographic head between the first distance, and obtain shoot described continuous videos two field picture last frame video frame images time subject and photographic head between second distance；
According to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts；
According to determining that result shows described continuous videos two field picture.
2. method according to claim 1, it is characterised in that according to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts, including:
Relation according to described first distance with focal length end distance threshold values, it is determined that show described first frame video frame images with the first preset field of view angle or the second preset field of view angle；
Relation according to described second distance with focal length end distance threshold values, it is determined that show described last frame video frame images with the first preset field of view angle or the second preset field of view angle；
Determine with the first preset field of view angle in the described angle of visual field with second preset field of view angle shoot image time relative multiplying power；
According to described relative multiplying power and Preset Time, it is determined that switching rate when switching to the second preset field of view angle from the first preset field of view angle or switch to the first preset field of view angle from the second preset field of view angle；
According to described switching rate, determine show the angle of visual field that adopts of described first frame video frame images and show the angle of visual field that described last frame video frame images adopts, it is determined that the angle of visual field that the video frame images shown in described continuous videos two field picture except the first frame video frame images and last frame video frame images adopts；
Wherein, described first angle of visual field is more than described second angle of visual field.
3. method according to claim 1, it is characterised in that according to determining that result shows described continuous videos two field picture, including:
According to the angle of visual field that the video frame images shown in described continuous videos two field picture determined adopts, determine the viewing area of described video frame images successively；
Extract the video frame images in described viewing area successively, and be amplified to the size of described video frame images；
Show the video frame images after processing successively.
4. according to the arbitrary described method of claim 1-3, it is characterised in that:
The mode of described first distance and second distance that obtains is for obtain by phase-detection auto-focusing or laser module.
5. according to the arbitrary described method of claim 1-3, it is characterised in that also include:
At described shooting video for, in time shooting the video, recording described first distance and second distance, and save as distance；
Described distance in statistics preset time period, it is determined that shooting number of times is more than the minima of the described distance of preset times and maximum；
According to described minima and maximum, described focal length end distance threshold values is adjusted.
6. according to the arbitrary described method of claim 1-3, it is characterised in that described subject is face.
7. the device that a video image shows, it is characterised in that described device includes:
Video image acquisition module, for when shooting video being detected, obtaining the continuous videos two field picture in Preset Time；
Shooting distance acquisition module, for obtain shoot described continuous videos two field picture the first frame video frame images time subject and photographic head between the first distance, and obtain shoot described continuous videos two field picture last frame video frame images time subject and photographic head between second distance；
The angle of visual field determines module, for according to described first distance and second distance respectively with the relation of focal length end distance threshold values, it is determined that show the angle of visual field that described continuous videos two field picture adopts；
Video image display module, for according to determining that result shows described continuous videos two field picture.
8. device according to claim 7, it is characterised in that the described angle of visual field determine module specifically for:
Relation according to described first distance with focal length end distance threshold values, it is determined that show described first frame video frame images with the first preset field of view angle or the second preset field of view angle；
Relation according to described second distance with focal length end distance threshold values, it is determined that show described last frame video frame images with the first preset field of view angle or the second preset field of view angle；
Determine with the first preset field of view angle in the described angle of visual field with second preset field of view angle shoot image time relative multiplying power；
According to described relative multiplying power and Preset Time, it is determined that switching rate when switching to the second preset field of view angle from the first preset field of view angle or switch to the first preset field of view angle from the second preset field of view angle；
According to described switching rate, determine show the angle of visual field that adopts of described first frame video frame images and show the angle of visual field that described last frame video frame images adopts, it is determined that the angle of visual field that the video frame images shown in described continuous videos two field picture except the first frame video frame images and last frame video frame images adopts；
Wherein, described first angle of visual field is more than described second angle of visual field.
9. device according to claim 7, it is characterised in that described video image display module specifically for:
According to the angle of visual field that the video frame images shown in described continuous videos two field picture determined adopts, determine the viewing area of described video frame images successively；
Extract the video frame images in described viewing area successively, and be amplified to the size of described video frame images；
Show the video frame images after processing successively.
10. according to the arbitrary described device of claim 7-9, it is characterised in that:
Described shooting distance acquisition module obtains the mode of described first distance and second distance for be obtained by phase-detection auto-focusing or laser module.
11. according to the arbitrary described device of claim 7-9, it is characterised in that also include:
Shooting distance preserves module, for when described shooting video is for certainly shooting the video, recording described first distance and second distance, and save as distance；
Shooting distance statistical module, for adding up described distance in preset time period, it is determined that shooting number of times is more than the minima of the described distance of preset times and maximum；
Focal length threshold values adjusting module, for according to described minima and maximum, being adjusted described focal length end distance threshold values.
12. according to the arbitrary described device of claim 7-9, it is characterised in that described subject is face.
13. a mobile terminal, including photographic head, it is characterised in that also include the device that the arbitrary described video image of claim 7-12 shows.
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