CN105376471A - Panorama shooting system based on moving platform and method - Google Patents
Panorama shooting system based on moving platform and method Download PDFInfo
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- CN105376471A CN105376471A CN201510956633.4A CN201510956633A CN105376471A CN 105376471 A CN105376471 A CN 105376471A CN 201510956633 A CN201510956633 A CN 201510956633A CN 105376471 A CN105376471 A CN 105376471A
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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
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/45—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
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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
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
-
- 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
-
- 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
- H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Studio Devices (AREA)
- Stereoscopic And Panoramic Photography (AREA)
Abstract
The invention discloses a panorama shooting method based on a mobile platform, comprising steps of turning on a preposition camera and a postposition camera, reading images or video flows and real-time preview video flows of the preposition camera and the postposition camera, performing respective processing on two paths of images, wherein the processing comprises image correction, color regulation, noisy point elimination, exposure and contract ratio regulation, extracting, screening and matching the image characteristic points, rectifying, splicing and fusing the image, compressing and storing the panorama images and videos, and rendering the image and displaying the image on the mobile phone. The panorama shooting system comprises two fish eye lenses and one reinforcing mechanism; the two fish eye lenses are installed on the mobile phone or on the preposition camera and the postposition camera of a flat computer through the reinforcing mechanism. The invention discloses a panorama shooting system based on the moving platform and the method, which better solve the problems that the current panorama shooting method is high in the cost and complex in the shooting process, needs the independent shooting device and cannot record the panorama videos.
Description
Technical field
The invention belongs to panoramic photographing technique field, particularly relate to a kind of panoramic shooting system based on mobile platform and method.
Background technology
The splicing of image and video, namely by splicing the picture taken from different perspectives and merging thus the picture obtained with great visual angle or panorama.Current most of algorithm is all that then by overlapping region registration, and the most multiple picture is fused together by finding the point matched in picture overlapping region between two.The difference of most variations mainly concentrates on collection and the use of data, as: panorama photographing mode in mobile phone: by user's translation mobile phone, mobile phone can take all pictures in translation motion, between two after splicing, obtains the picture of whole scene; Taken photograph or the video of different visual angles by multiple camera respectively, require that captured picture ensures there is overlapping region between any two, then by the mode of post-processed, captured picture splicing is become a panorama; By special integral panoramic camera, disposable output panorama.
Taken by the panning mode of mobile phone, shooting time is long, " ghost " that often occur splicing mistake or produce because there are objects moving in shooting process, and the problems such as video that cannot pan; Taken by multiple camera, then can there is apparatus expensive, cannot real time inspection shooting picture, complicated operation and data are difficult to the problems such as synchronous; Taken by special panorama camera, owing to being independently capture apparatus, can there is system complexity, price is high, carries the problems such as constant.In addition, current most equipment does not support the function such as live preview panorama and panoramic video shooting.
Summary of the invention
The object of the present invention is to provide a kind of panoramic shooting system based on mobile platform and method, be intended to solve existing panorama shooting method and there is the problem that cost is high, shooting process is loaded down with trivial details, need independent capture apparatus, cannot record panoramic video.
The present invention is achieved in that a kind of panorama shooting method based on mobile platform, and the described panorama shooting method based on mobile platform comprises:
Open Front camera and rearmounted camera, read picture or video flowing and the real-time preview video stream of Front camera and the shooting of rearmounted camera;
Deal with respectively two-way image, comprise image flame detection, color adjusts, and noise is eliminated, exposure and setting contrast; Image flame detection removes fractional distortion and LensShading, and colour correction is the adjustment for colour temperature, and noise is eliminated and related to imageing sensor intrinsic noise, and noise when view data reads is eliminated;
The extraction of image characteristic point, screening and coupling; Feature point extraction algorithm detects the position of characteristic point, and by the description to characteristic point, matches the characteristic point that this is corresponding in another width picture, for image registration below and splicing are prepared;
Image registration, splicing, fusion: based on the Image Feature Point Matching pair obtained, calculate the relative position relation of front and back camera, and the overlapping region of picture, i.e. I
front=K [R|T] K
-1i
back, wherein I
frontwith I
backrepresent the Feature Points Matching pair of the front and rear camera view found by feature point extraction, the inner parameter of what K represented is camera, comprise the focal length of camera, the side-play amount of the relative camera lens optical axis in camera sensor center and the distortion parameter etc. of camera lens, [R|T] is then need with the camera relative position relation calculated, this relative position relation, be described as the Mathematical Modeling of rotation and translation, relative transform matrix [R|T] is fixing; Stitching algorithm is then moved together picture overlapping region, finally by image co-registration by the overlapping region excess smoothness between two images based on the picture registration situation after determining;
The compression of panoramic picture and video and storage; Image rendering is shown on the screen of mobile device.
Another object of the present invention is to provide a kind of described panoramic shooting system based on the panorama shooting method of mobile platform, described panoramic shooting system comprises:
Read module, for reading picture or video flowing and the real-time preview video stream of Front camera and the shooting of rearmounted camera;
Image processing module, for dealing with respectively two-way image, comprises image flame detection, and color adjusts, and noise is eliminated, exposure and setting contrast;
Characteristic point processing module, for the extraction of image characteristic point, screening and coupling; Feature point extraction algorithm detects the position of characteristic point, and by the description to characteristic point, matches the characteristic point that this is corresponding in another width picture, for image registration below and splicing are prepared;
Feature Points Matching module, for image registration, splicing, fusion; Based on the Image Feature Point Matching pair obtained, the relative position relation to front and back camera of calculating, and the overlapping region of picture; Stitching algorithm is then moved together picture overlapping region, finally by image co-registration by the overlapping region excess smoothness between two images based on the picture registration situation after determining;
Memory module, for compression and the storage of panoramic picture and video;
Display module, is shown to the screen of mobile device for image rendering.
Further, described image processing module comprises:
Image flame detection unit, for removing fractional distortion and LensShading;
Color correction unit, for the adjustment to colour temperature;
Noise eliminates unit, and for imageing sensor intrinsic noise, and noise when view data reads is eliminated.
Further, described panoramic shooting system comprises further: two fish eye lenses and a strengthening mechanism;
On the front-facing camera that two fish eye lenses are arranged on mobile phone or flat board by screw thread and post-positioned pick-up head.
Another object of the present invention is to provide a kind of and use the described intelligent terminal based on the panorama shooting method of mobile platform.
Panorama shooting method based on mobile platform provided by the invention, a kind of scheme based on mobile platform (mobile phone or flat board) photographing panorama picture and video is proposed, require that this mobile platform possesses front and rear two cameras, solve existing panorama shooting method preferably and there is the problem that cost is high, shooting process is loaded down with trivial details, need independent capture apparatus, cannot record panoramic video.In addition, structure of the present invention is simple, easy to operate, and practicality is comparatively strong, and the effect of girth member is separately fixed on front and rear camera by two fish eye lenses, and in order to ensure image quality, the optical axis of two camera lenses needs the optical axis coincidence with camera; In order to ensure Stability Analysis of Structures, first girth member needs tightly to be wrapped on mobile phone or flat board, can be fixed by the form of shelf or protective sleeve; Girth member requires the visual field can not blocking front and rear camera lens; Two fish eye lenses, in order to fixing stability, can be fixed on girth member by screw thread; The effect of girth member is separately fixed on front and rear camera by two fish eye lenses, and in order to ensure image quality, the optical axis of two camera lenses needs the optical axis coincidence with camera; In order to ensure Stability Analysis of Structures, first girth member needs tightly to be wrapped on mobile phone or flat board, can be fixed by the form of shelf or protective sleeve; Girth member requires the visual field can not blocking front and rear camera lens; Two fish eye lenses, in order to fixing stability, can be fixed on girth member by screw thread.
Accompanying drawing explanation
Fig. 1 is the panorama shooting method flow chart based on mobile platform that the embodiment of the present invention provides.
Fig. 2 is the panoramic shooting system structural representation based on mobile platform that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with accompanying drawing, application principle of the present invention is further described.
As shown in Figure 1, the panorama shooting method based on mobile platform of the embodiment of the present invention comprises the following steps:
The first step, opens Front camera and rearmounted camera;
Second step, reads picture or video flowing and the real-time preview video stream of Front camera and the shooting of rearmounted camera;
3rd step, deals with respectively two-way image, comprises image flame detection, and color adjusts, and noise is eliminated, exposure and setting contrast etc.;
4th step, the extraction of image characteristic point, screening and coupling;
5th step, image registration, splicing, fusion;
6th step, the compression of panoramic picture and video and storage; Image rendering is shown on the screen of mobile device.
Deal with respectively two-way image, comprise image flame detection, color adjusts, and noise is eliminated, exposure and setting contrast; More difficult description, because each is a complicated operation, and each block also all relative standard, just can do some adjustment for platform, such as image flame detection, mainly remove fractional distortion and LensShading etc., colour correction is mainly for the adjustment of colour temperature, and noise is eliminated and then related generally to imageing sensor intrinsic noise, and noise when view data reads is eliminated, exposure and contrast, mainly in order to the brightness solved under high dynamic scene is inaccurate, cross bright excessively dark problem.These algorithm is not key protection point in the present invention, but can protect these operating procedures, because algorithm itself is not possess novelty very much.The extraction of image characteristic point with mate; The classification of characteristic point and the method for feature point extraction have a variety of, such as Harris angle point, SIFT, SURF, FAST etc.These methods can detect accomplishes suitable characteristic point, and can by for the description of characteristic point, matches the corresponding characteristic point in picture between two, thinks that image registration below and splicing are prepared.
Image registration, splicing, fusion; Specifically, based on the Image Feature Point Matching pair obtained, calculate the relative position relation of front and back camera, and the overlapping region of picture, i.e. I
front=K [R|T] K
-1i
back, wherein I
frontwith I
backrepresent the Feature Points Matching pair of the front and rear camera view found by feature point extraction, the inner parameter of what K represented is camera, comprise the focal length of camera, the side-play amount of the relative camera lens optical axis in camera sensor center and the distortion parameter etc. of camera lens, [R|T] is then need with the camera relative position relation calculated, this relative position relation, is described as the Mathematical Modeling of rotation and translation.Because the locus of front and rear camera is fixing, so generally (such as camera lens does not loosen), relative transform matrix [R|T] is also fixing.This makes in actual product, only need to carry out measurement in first time to the relative position [R|T] of distinct device camera to correct, use same transformation matrix to carry out registration afterwards just passable always, do not need each run all to carry out the operation such as registration of the extraction of characteristic point, screening, coupling and image; Stitching algorithm is then moved together picture overlapping region, finally by image co-registration by the overlapping region excess smoothness between two images based on the picture registration situation after determining.
The present invention has supporting software systems, the control of primary responsibility front and rear camera, the acquisition of camera data (photo of real-time pictures, final shooting and video flowing), image flame detection, picture quality correction, exposure and setting contrast, the extraction of image characteristic point, screening and coupling, image registration, splicing, fusion, and the compression of panoramic picture and video and storage etc.Because the present invention is based on mobile platform, so software can be the form of an independently application software (Application).
As shown in Figure 2, the panoramic shooting system based on mobile platform of the embodiment of the present invention comprises: two fish eye lenses and a strengthening mechanism.The effect of girth member is separately fixed on front and rear camera by two fish eye lenses, and in order to ensure image quality, the optical axis of two camera lenses needs the optical axis coincidence with camera.In order to ensure Stability Analysis of Structures, first girth member needs tightly to be wrapped on mobile phone or flat board, can be fixed by the form of shelf or protective sleeve; Girth member requires the visual field can not blocking front and rear camera lens.Two fish eye lenses, in order to fixing stability, can be fixed on girth member by screw thread.
On the front-facing camera that two fish eye lenses are arranged on mobile platform (mobile phone or flat board) by strengthening mechanism and post-positioned pick-up head.
Front-facing camera and post-positioned pick-up head are multiple, can be attached on its main shooting camera (being namely responsible for the camera of imaging), two fish eye lens angle of visual field FieldofView (FoV), comprise horizontal FoV, vertical FoV, diagonal angle FoV are all greater than 180 °, ensure that all scenic picture comprise to come in by phase function, and can ensure that the picture of two camera shootings has certain overlapping region.The camera specification of present mobile phone or flat board greatly, so in order to ensure obtained picture can meet later image splicing requirement, camera lens needs variable focal length.Specifically can there is several scheme: a) camera lens itself possesses zoom capabilities, need manual adjustments focal length; B) camera lens itself possesses zoom capabilities, automatically focuses; C) do not related to the design of concrete adaptor by adaptor herein, just propose such scheme possibility, the effect of adaptor and Reference Design can design see the associated components of DSLR, such as
http:// vintage-camera-lenses.com/rollei-qbm-adapter-guide/change overall lens focus, need manually to change adaptor.For the varifocal fish-eye scheme of employing, adjustment lens focus, reaches the horizontal FoV of picture captured by each camera, vertical FoV is all greater than 180.Till, to guarantee whole scenic picture to record.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. based on a panorama shooting method for mobile platform, it is characterized in that, the described panorama shooting method based on mobile platform comprises:
Open Front camera and rearmounted camera, read picture or video flowing and the real-time preview video stream of Front camera and the shooting of rearmounted camera;
Deal with respectively two-way image, comprise image flame detection, color adjusts, and noise is eliminated, exposure and setting contrast; Image flame detection removes fractional distortion and LensShading, and colour correction is the adjustment for colour temperature, and noise is eliminated and related to imageing sensor intrinsic noise, and noise when view data reads is eliminated;
The extraction of image characteristic point, screening and coupling; Feature point extraction algorithm detects the position of characteristic point, and by the description to characteristic point, matches the characteristic point that this is corresponding in another width picture, for image registration below and splicing are prepared;
Image registration, splicing, fusion: based on the Image Feature Point Matching pair obtained, calculate the relative position relation of front and back camera, and the overlapping region of picture, i.e. I
front=K [R|T] K
-1i
back, wherein I
frontwith I
backrepresent the Feature Points Matching pair of the front and rear camera view found by feature point extraction, the inner parameter of what K represented is camera, comprise the focal length of camera, the side-play amount of the relative camera lens optical axis in camera sensor center and the distortion parameter of camera lens, [R|T] is then need with the camera relative position relation calculated, this relative position relation, be described as the Mathematical Modeling of rotation and translation, relative transform matrix [R|T] is fixing; Stitching algorithm is then moved together picture overlapping region, finally by image co-registration by the overlapping region excess smoothness between two images based on the picture registration situation after determining;
The compression of panoramic picture and video and storage; Image rendering is shown on the screen of mobile device.
2. as claimed in claim 1 based on a panoramic shooting system for the panorama shooting method of mobile platform, it is characterized in that, described panoramic shooting system comprises:
Read module, for reading picture or video flowing and the real-time preview video stream of Front camera and the shooting of rearmounted camera;
Image processing module, for dealing with respectively two-way image, comprises image flame detection, and color adjusts, and noise is eliminated, exposure and setting contrast;
Characteristic point processing module, for the extraction of image characteristic point, screening and coupling; Feature point extraction algorithm detects the position of characteristic point, and by the description to characteristic point, matches the characteristic point that this is corresponding in another width picture, for image registration below and splicing are prepared;
Feature Points Matching module, for image registration, splicing, fusion; Based on the Image Feature Point Matching pair obtained, calculate the relative position relation of front and back camera, and the overlapping region of picture; Stitching algorithm is then moved together picture overlapping region, finally by image co-registration by the overlapping region excess smoothness between two images based on the picture registration situation after determining;
Memory module, for compression and the storage of panoramic picture and video;
Display module, is shown to the screen of mobile device for image rendering.
3. panoramic shooting system as claimed in claim 2, it is characterized in that, described image processing module comprises:
Image flame detection unit, for removing fractional distortion and LensShading;
Color correction unit, for the adjustment to colour temperature;
Noise eliminates unit, and for imageing sensor intrinsic noise, and noise when view data reads is eliminated.
4. panoramic shooting system as claimed in claim 2, it is characterized in that, described panoramic shooting system comprises further: two fish eye lenses and a strengthening mechanism;
On the front-facing camera that two fish eye lenses are arranged on mobile phone or flat board by screw thread and post-positioned pick-up head.
5. one kind uses the intelligent terminal based on the panorama shooting method of mobile platform described in claim 1.
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| CN105979246A (en) * | 2016-06-17 | 2016-09-28 | 北京疯景科技有限公司 | Method and device for photographing panoramic contents |
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