CN103237172A - Method and device of time-lapse shooting - Google Patents
Method and device of time-lapse shooting Download PDFInfo
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Abstract
The invention relates to a method and a device of time-lapse shooting. The method comprises the following steps of capturing user actions by a camera, detecting a gesture target area in a shot image so as to obtain a gesture model and extract gesture contour features, wherein the gesture contour features comprise the number of fingers; by presetting the value determination of the time-lapse shooting interval time to be associated with the gesture contour features, performing value assignment on the interval time according to the gesture contour features, distributing and starting a time-lapse shooting timer; and after the timer goes off, triggering an instant shooting action. A user can utilize a gesture to realize the control operation of shooting, the gesture is identified by a shooting device to perform intelligent control, and photo fuzziness caused by vibration of the camera due to the action of a point touch on a button is avoided; and moreover, the device can be remotely controlled, the time-lapse shooting time interval can be flexibly determined by a shot person so as to set the time of starting the shooting action, and the operation is simple and interesting.
Description
Technical field
The present invention relates to human-computer interaction technique field, relate in particular to a kind of time-lapse shooting method and device.
Background technology
Along with the development of the digital vedio recording technology of semiconductor data record, digital vedio recording is because its convenience and be subjected to liking of users deeply, and greatly changed user's shooting custom and mode of operation.Digital camera in the market or the image pickup method of mobile phone are by the manual button click of user and trigger the shooting action.No matter be touch screen button or mechanical botton, the user makes the vibrations of terminal fuselage cause photographic fog because putting the action of touching button easily, and this problem is especially outstanding when autodyning.If realize shooting with video-corder purpose to avoid photographic fog by setting the blanking time of self taking, then be not easy to hold best shooting time, be not easy to carry out the control of randomness.
Summary of the invention
In order to overcome the weak point of the prior art of above-mentioned indication, the invention provides a kind of time-lapse shooting method and device of flexible operation of Based Intelligent Control, to avoid making the vibrations of device fuselage cause photographic fog because putting the action of touching button.
The present invention is achieved by the following technical solutions:
A kind of time-lapse shooting method may further comprise the steps:
S1, camera are caught user action, and the gesture contour feature is extracted to obtain gesture model in the gesture target area in the detection image recording, and described gesture contour feature comprises the finger number;
S2, value blanking time by default time-lapse shooting are associated with the gesture contour feature,, distribute and the timer of startup time-lapse shooting carrying out assignment this blanking time according to the gesture contour feature;
S3, when timer to after date, trigger the instant action of taking.
Further, described step S2 is associated with the gesture contour feature by value blanking time of default time-lapse shooting, refer to carrying out assignment this blanking time according to the gesture contour feature: value blanking time by default time-lapse shooting is associated with the finger number, reads the finger number in the gesture contour feature and it assignment is given blanking time.
Further, be unit the blanking time of described time-lapse shooting with the second.
Gesture target area in the described step S1 detection image recording is extracted the gesture contour feature and is comprised: the image recording that obtains is converted to the YCrCb color space carries out skin detection to obtain gesture model; Catch the pixel that is complementary with the colour of skin threshold values of presetting in the image recording, determine the gesture target area; Output gesture profile to the characteristic point of this gesture profile extraction finger tip, is determined the finger number.
Before the described step S1, also comprise: the time-lapse shooting function of opening gesture identification.
During the gesture target area of described step S1 in not detecting image recording, close the time-lapse shooting function of gesture identification.
The invention also discloses a kind of time-lapse shooting device, comprising:
Image capture module is used for catching user action;
Image processing module to obtain gesture model, extracts the gesture contour feature for detection of the gesture target area in the image recording, and described gesture contour feature comprises the finger number;
Module regularly is set, is used for being associated with the gesture contour feature by value blanking time of default time-lapse shooting, to carrying out assignment this blanking time, distribute and start the timer of time-lapse shooting according to the gesture contour feature;
Carry out taking module, be used for arriving after date when timer, trigger the instant action of taking.
Further, described timing arranges module and is used for being associated with the gesture contour feature by value blanking time of default time-lapse shooting, refer to carrying out assignment this blanking time according to the gesture contour feature: value blanking time by default time-lapse shooting is associated with the finger number, reads the finger number in the gesture contour feature and it assignment is given blanking time.
Described image processing module comprises: converting unit is used for that the image recording that obtains is converted to the YCrCb color space and carries out skin detection; The Region Segmentation unit is used for catching image recording and the pixel that the colour of skin threshold values of presetting is complementary, and determines the gesture target area; The finger detecting unit is used for output gesture profile, to the characteristic point of this gesture profile extraction finger tip, determines the finger number.
Time-lapse shooting device of the present invention also comprises:
Time-lapse shooting starts module, is used for opening the time-lapse shooting function of gesture identification;
The time-lapse shooting closing module is used for closing the time-lapse shooting function of gesture identification when not detecting the gesture target area of image recording.
Compared with prior art, beneficial effect of the present invention is: the user can utilize gesture to realize the control operation of taking, carry out Based Intelligent Control by filming apparatus identification gesture, needn't worry when autodyning because putting the action of touching button makes the vibrations of device fuselage cause photographic fog, user not to need a little tactile button just can realize the auto heterodyne effect; And can carry out Long-distance Control to device, by the time interval that the person of being taken determines time-lapse shooting voluntarily flexibly, set the opportunity of taking action that starts.Its operation is succinct, is rich in enjoyment.
Description of drawings
Accompanying drawing 1 is the realization flow schematic diagram of the time-lapse shooting method of an embodiment of the present invention;
Accompanying drawing 2 is the frame diagram of the time-lapse shooting device of an embodiment of the present invention.
Embodiment
For the ease of those skilled in the art's understanding, the invention will be further described below in conjunction with accompanying drawing.
A kind of time-lapse shooting method may further comprise the steps:
S1, camera are caught user action, and the gesture contour feature of this gesture model is extracted to obtain gesture model in the gesture target area in the detection image recording, and described gesture contour feature comprises the finger number;
S2, value blanking time by default time-lapse shooting are associated with the gesture contour feature,, distribute and the timer of startup time-lapse shooting carrying out assignment this blanking time according to the gesture contour feature;
S3, when timer to after date, trigger the instant action of taking.
Before step S1, also comprise: the time-lapse shooting function of opening gesture identification.After opening this time-lapse shooting function, the user shows gesture.Owing to be difficult to carry out effective recognition for some complicated gestures, the gesture of therefore controlling shooting operation should adopt simple gesture to be advisable.
In step S1, during gesture target area in not detecting image recording, close the time-lapse shooting function of gesture identification, adopt common push-botton operation pattern.
In step S1, by the identification of the detection of skin regions method under YCrCb color space gesture.Precision in order to identify under this method, preferably, shooting background should not have the zone of the similar colour of skin, and the user who is taken wears non-colour of skin clothes.The YCrCb space is widely used in fields such as people's face detection, because general image all is based on rgb space, influenced by brightness quite big for the colour of skin of people's face in rgb space, so colour of skin point is difficult to separate from non-colour of skin point, that is to say at rgb space after treatment, colour of skin point is the point that disperses, and the centre is embedded with a lot of non-colours of skin, and this demarcates (demarcation of people's face, eyes etc.) for area of skin color and has brought a difficult problem.If RGB is transferred to the YCrCb space, can ignore the influence of Y (brightness), very little because this space is influenced by brightness, the colour of skin can produce well birdss of the same feather flock together, and Cr and CB have represented two aspects of color respectively: tone and saturation.So just the space of three-dimensional is converted to the CrCb of two dimension, colour of skin point can form certain shape, as: the words of people's face can be seen the zone of people's face, and the words of arm can be seen the form of an arm, and are very beneficial to tupe identification.Rule of thumb the CrCb value of certain point satisfies: 133≤Cr≤173,77≤Cb≤127 o'clock, this point is considered to colour of skin point, other be non-colour of skin point just.Thereby predeterminable colour of skin threshold values is 0≤Y≤255,133≤Cr≤173,77≤Cb≤127.
In step S1, the gesture target area in the described detection image recording is extracted the gesture contour feature and is comprised: the image recording that obtains is converted to the YCrCb color space carries out skin detection to obtain gesture model; Catch the pixel that is complementary with the colour of skin threshold values of presetting in the image recording, determine the gesture target area; Output gesture profile to the characteristic point of this gesture profile extraction finger tip, is determined the finger number.Described definite gesture target area comprises: the area of skin color that the pixel that is complementary with default colour of skin threshold values that catch is formed carries out smoothing processing, threshold valuesization, morphological operation etc. and removes picture noises and handle; Detect the people's face in the area of skin color and remove (can detect people's face or remove people's face by the depth image dividing method by identification sub-circular or elliptical region).Described characteristic point to this gesture profile extraction finger tip determines that the finger number realizes in existing image processing techniques.In an embodiment of the present invention, preferably, determine convex region and recessed district in the profile by the slope variation that detects the point on the gesture profile; Judge that whether the curvature in convex region is more than or equal to the preset curvature threshold values; Measure the distance between center, convex region and the adjacent recessed district center, judge its whether more than or equal to the preset length threshold values (this length threshold values can be set to a proportional numerical value of palm height, such as the palm height 1/3rd): judge that then this convex region is fingertip area if all meet.Determine that the finger number is the number of determining fingertip area.
In step S2, set according to the gesture contour feature that extracts the blanking time of described time-lapse shooting, wherein, value blanking time by default time-lapse shooting is associated with the gesture contour feature, refer to carrying out assignment this blanking time according to the gesture contour feature: value blanking time by default time-lapse shooting is associated with the finger number, reads the finger number in the gesture contour feature and it assignment is given blanking time.Be unit the blanking time of described time-lapse shooting with the second.When finger number that camera comprises in the gesture that when focusing identification user shows, this finger number is read as the blanking time that numerical value and assignment are given time-lapse shooting, such as holding up a finger as the user, be set blanking time is 1 second, and distributing a timing is 1 second timer.
Preferably, should set when comprising a plurality of gesture model in the image recording that camera is caught the value rule of blanking time.Can be set to point the maximum gesture model of number is reference, is reference with the minimum gesture model of finger number perhaps, and perhaps the finger number summation with whole gesture models is reference, perhaps the value rule of other easy operatings.
In step S3, after timer arrives after date, namely arrives the blanking time of time-lapse shooting, trigger the instant action of taking, the unlatching shutter.
Particularly, as shown in Figure 1, be example with the smart mobile phone, the present invention also provides the realization flow of time-lapse shooting of the smart mobile phone of a kind of embodiment, and its step comprises:
101, start camera, open the time-lapse shooting function of gesture identification;
102, camera in focus process image recording to catch user action;
103, the gesture target area in the detection image recording is to obtain gesture model;
104, judge whether to detect the gesture target area, if, execution in step 106, otherwise execution in step 105;
105, close the time-lapse shooting function of gesture identification;
106, extract the gesture contour feature of gesture model;
107, read finger number in the gesture contour feature;
The finger number assignment that 108, will read is the blanking time of time-lapse shooting;
109, distribute and start the timer of time-lapse shooting;
110, judge whether timer expires, if execution in step 111 then, otherwise repeating step 110;
111, trigger the instant action of taking, start shutter.
The invention also discloses a kind of time-lapse shooting device, as shown in Figure 2, comprising:
Image capture module 22 is used for catching user action;
Image processing module 23 to obtain gesture model, extracts the gesture contour feature for detection of the gesture target area in the image recording, and described gesture contour feature comprises the finger number;
Module 24 regularly is set, is used for being associated with the gesture contour feature by value blanking time of default time-lapse shooting, to carrying out assignment this blanking time, distribute and start the timer of time-lapse shooting according to the gesture contour feature;
Carry out taking module 25, be used for arriving after date when timer, trigger the instant action of taking.
Described image processing module comprises: converting unit is used for that the image recording that obtains is converted to the YCrCb color space and carries out skin detection; The Region Segmentation unit is used for catching image recording and the pixel that the colour of skin threshold values of presetting is complementary, and determines the gesture target area; The finger detecting unit is used for output gesture profile, to the characteristic point of this gesture profile extraction finger tip, determines the finger number.Described Region Segmentation unit is used for determining that the gesture target area comprises: be used for that the area of skin color that the pixel that the colour of skin threshold values with default of catching is complementary is formed is carried out removal picture noises such as smoothing processing, threshold valuesization, morphological operation and handle; For detection of the people's face in the area of skin color and removal.Described finger detecting unit is used for the gesture profile is extracted the characteristic point of finger tip, determines that the finger number comprises: determine convex region and recessed district in the profile by the slope variation that detects the point on the gesture profile; Judge that whether the curvature in convex region is more than or equal to the preset curvature threshold values; Measure the distance between center, convex region and the adjacent recessed district center, judge that whether it is more than or equal to the preset length threshold values; If all meet and judge that then it is fingertip area, the number of described fingertip area is the finger number when described convex region.
Further, described timing arranges module and is used for being associated with the gesture contour feature by value blanking time of default time-lapse shooting, refer to carrying out assignment this blanking time according to the gesture contour feature: value blanking time by default time-lapse shooting is associated with the finger number, reads the finger number in the gesture contour feature and it assignment is given blanking time.Preferably, be unit the blanking time of described time-lapse shooting with the second.
Time-lapse shooting device of the present invention also comprises:
Time-lapse shooting starts module 21, is used for opening the time-lapse shooting function of gesture identification;
Time-lapse shooting closing module 26 is used for closing the time-lapse shooting function of gesture identification when not detecting the gesture target area of image recording.
Above content be in conjunction with concrete optimal way to further describing that the present invention does, should not assert that concrete enforcement of the present invention is confined to above explanation.For those skilled in the art, without departing from the inventive concept of the premise, can also make some simple deduction or replace, within the protection range that the claim that all should be considered as being submitted to by the present invention is determined.
Claims (10)
1. time-lapse shooting method may further comprise the steps:
S1, camera are caught user action, and the gesture contour feature is extracted to obtain gesture model in the gesture target area in the detection image recording, and described gesture contour feature comprises the finger number;
S2, value blanking time by default time-lapse shooting are associated with the gesture contour feature,, distribute and the timer of startup time-lapse shooting carrying out assignment this blanking time according to the gesture contour feature;
S3, when timer to after date, trigger the instant action of taking.
2. time-lapse shooting method according to claim 1, it is characterized in that, described step S2 is associated with the gesture contour feature by value blanking time of default time-lapse shooting, refer to carrying out assignment this blanking time according to the gesture contour feature: value blanking time by default time-lapse shooting is associated with the finger number, reads the finger number in the gesture contour feature and it assignment is given blanking time.
3. time-lapse shooting method according to claim 2, it is characterized in that: be unit the blanking time of described time-lapse shooting with the second.
4. time-lapse shooting method according to claim 2 is characterized in that, the gesture target area in the described step S1 detection image recording is extracted the gesture contour feature and comprised to obtain gesture model:
The image recording that obtains is converted to the YCrCb color space carries out skin detection;
Catch the pixel that is complementary with the colour of skin threshold values of presetting in the image recording, determine the gesture target area;
Output gesture profile to the characteristic point of this gesture profile extraction finger tip, is determined the finger number.
5. according to each described time-lapse shooting method among the claim 1-4, it is characterized in that, before the described step S1, also comprise: the time-lapse shooting function of opening gesture identification.
6. time-lapse shooting method according to claim 5 is characterized in that: during the gesture target area of described step S1 in not detecting image recording, close the time-lapse shooting function of gesture identification.
7. a time-lapse shooting device is characterized in that, comprising:
Image capture module is used for catching user action;
Image processing module to obtain gesture model, extracts the gesture contour feature for detection of the gesture target area in the image recording, and described gesture contour feature comprises the finger number;
Module regularly is set, is used for being associated with the gesture contour feature by value blanking time of default time-lapse shooting, to carrying out assignment this blanking time, distribute and start the timer of time-lapse shooting according to the gesture contour feature;
Carry out taking module, be used for arriving after date when timer, trigger the instant action of taking.
8. time-lapse shooting device according to claim 7, it is characterized in that, described timing arranges module and is used for being associated with the gesture contour feature by value blanking time of default time-lapse shooting, refer to carrying out assignment this blanking time according to the gesture contour feature: value blanking time by default time-lapse shooting is associated with the finger number, reads the finger number in the gesture contour feature and it assignment is given blanking time.
9. time-lapse shooting device according to claim 8 is characterized in that, described image processing module comprises:
Converting unit is used for that the image recording that obtains is converted to the YCrCb color space and carries out skin detection;
The Region Segmentation unit is used for catching image recording and the pixel that the colour of skin threshold values of presetting is complementary, and determines the gesture target area;
The finger detecting unit is used for output gesture profile, to the characteristic point of this gesture profile extraction finger tip, determines the finger number.
10. according to each described time-lapse shooting device among the claim 7-9, it is characterized in that, also comprise:
Time-lapse shooting starts module, is used for opening the time-lapse shooting function of gesture identification;
The time-lapse shooting closing module is used for closing the time-lapse shooting function of gesture identification when not detecting the gesture target area of image recording.
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