CN105141825A - Heavenly body shooting method and device - Google Patents
Heavenly body shooting method and device Download PDFInfo
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Abstract
The invention discloses a heavenly body shooting method. The method comprises that a terminal obtains a heavenly body image corresponding to standard time (ST) and an hour angle of a to-be-observed heavenly body, corresponding to the ST, of the terminal in at least two ST within a preset time period; according to the ST and the hour angle of the to-be-observed heavenly body, corresponding to the ST, of the terminal, the hour angle difference between each ST and the initial ST is calculated; and according to the hour angle difference between each ST and the initial ST, the terminal overlaps the heavenly body images corresponding to the ST to obtain a final heavenly body image. The invention also discloses a heavenly body shooting device.
Description
Technical field
The present invention relates to field of mobile terminals, particularly relate to a kind of celestial body image pickup method and device.
Background technology
At present, when utilizing the specific celestial body of terminal taking, in order to overcome earth rotation to the impact seeing star, needing to introduce equatorial telescope and carrying out auxiliary shooting, making terminal camera aim at the celestial body needing shooting all the time, finally obtain the consistent celestial image of an argument degree.But equatorial telescope is expensive, if terminal assembling equatorial telescope, the high cost of terminal can be caused; If terminal does not assemble equatorial telescope, the celestial image causing terminal to obtain due to earth rotation is straight or bending optical track.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present invention is expected to provide a kind of celestial body image pickup method and device, when not using equatorial telescope, makes terminal taking go out celestial image clearly.
Technical scheme of the present invention is achieved in that
First aspect, embodiments provide a kind of celestial body image pickup method, be applied to terminal, comprise: during described terminal at least two standards within a predetermined period of time, obtain the celestial image corresponding with during described standard and the hour angle with described terminal celestial body to be observed corresponding during described standard; Described terminal according to during described standard and the hour angle of the described terminal to be observed celestial body corresponding with during described standard, relative to the hour angle difference during primary standard when calculating each standard; Described terminal according to during described each standard relative to hour angle difference during primary standard, each celestial image corresponding with during described standard is superposed, obtains final celestial image.
In the above-described embodiments, described terminal obtains the hour angle of the described terminal to be observed celestial body corresponding with during described standard, specifically comprise: described terminal, when Current standards, obtains the latitude and longitude information in geographical position residing for self, and the elevation angle of self current pose and azimuth; When described terminal is according to described Current standards, described latitude and longitude information, the described elevation angle and azimuth obtain local sidereal time and right ascension corresponding to celestial body to be observed; Described terminal obtains the hour angle of the described terminal to be observed celestial body corresponding with during described Current standards according to described local sidereal time and right ascension corresponding to described celestial body to be observed.
In the above-described embodiments, described terminal obtains the elevation angle and the azimuth of self current pose when Current standards, specifically comprise: described terminal when Current standards, by following at least one device: compass, gyroscope and gravity sensor obtain the elevation angle and the azimuth of self current residing attitude described.
In the above-described embodiments, when described terminal is according to described Current standards, described latitude and longitude information, the described elevation angle and azimuth obtain local sidereal time, specifically comprise: when described terminal is according to described Current standards, described latitude and longitude information, by formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, calculates described local sidereal time; Wherein, s is described local sidereal time; S
0, be Greenwich local sidereal time during universal time zero on the same day; M, during for described Current standards; λ, the longitude information in geographical position residing for described terminal; Nh, the time difference of the time zone relative GMT residing for described terminal belonging to geographical position; μ is conversion coefficient.
In the above-described embodiments, described terminal obtains the hour angle of the described terminal to be observed celestial body corresponding with during described Current standards according to described local sidereal time and right ascension corresponding to described celestial body to be observed, specifically comprise: described terminal is according to s and right ascension α corresponding to described celestial body to be observed described local sidereal time, pass through formula: t=s-α, calculate the hour angle t of the described terminal to be observed celestial body corresponding with during described Current standards.
Second aspect, embodiments provide a kind of celestial body filming apparatus, be applied to terminal, comprise: obtain unit, computing unit and superpositing unit, wherein: described acquisition unit, during for the standard of at least two within a predetermined period of time, obtain the celestial image corresponding with during described standard and the hour angle with described terminal celestial body to be observed corresponding during described standard; Described computing unit, for according to during described standard and the hour angle of the described terminal to be observed celestial body corresponding with during described standard that obtains of described acquisition unit, relative to the hour angle difference during primary standard when calculating each standard; Described superpositing unit, for calculate according to described computing unit described each standard time relative to hour angle difference during primary standard, each celestial image corresponding with during described standard that described acquisition unit obtains is superposed, obtains final celestial image.
In the above-described embodiments, described acquisition unit comprises: first obtains subelement, second obtains subelement and hour angle acquisition subelement, wherein: described first obtains subelement, for when Current standards, obtain the latitude and longitude information in geographical position residing for self, and the elevation angle of self current pose and azimuth; Described second obtains subelement, during for obtaining according to described first the described Current standards that subelement obtains, and described latitude and longitude information, the described elevation angle and azimuth obtain local sidereal time and right ascension corresponding to celestial body to be observed; Described hour angle obtains subelement, for obtaining according to described second the hour angle that described local sidereal time that subelement obtains and right ascension corresponding to described celestial body to be observed obtain the described terminal to be observed celestial body corresponding with during described Current standards.
In the above-described embodiments, described first obtains subelement, specifically for: when Current standards, by following at least one device: compass, gyroscope and gravity sensor obtain the elevation angle and the azimuth of self current residing attitude described.
In the above-described embodiments, described second obtains subelement, specifically for: when obtaining the described Current standards of subelement acquisition according to described first, described latitude and longitude information, by formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, calculates described local sidereal time; Wherein, s is described local sidereal time; S
0, be Greenwich local sidereal time during universal time zero on the same day; M, during for described Current standards; λ, the longitude information in geographical position residing for described terminal; Nh, the time difference of the time zone relative GMT residing for described terminal belonging to geographical position; μ is conversion coefficient.
In the above-described embodiments, described hour angle obtains subelement, specifically for: according to the s and right ascension α corresponding to described celestial body to be observed described local sidereal time for obtaining that subelement obtains according to described second, pass through formula: t=s-α, calculate the hour angle t of the described terminal to be observed celestial body corresponding with during described Current standards.
Embodiments provide a kind of celestial body image pickup method and device, by obtaining the hour angle of the celestial image corresponding with during standard and terminal celestial body to be observed during terminal at least two standards within a predetermined period of time; According to during standard and the hour angle corresponding with during standard, relative to the hour angle difference during primary standard when calculating each standard; According to during each standard relative to hour angle difference during primary standard, each celestial image corresponding with during standard is superposed, obtain final celestial image, terminal is made to shoot celestial image clearly when not using equatorial telescope, greatly reduce the hardware cost of terminal taking celestial body, for commonness photograph, fan provides convenience.
Accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram of the mobile terminal realizing each embodiment of the present invention;
Fig. 2 is the schematic flow sheet of the celestial body image pickup method of the mobile terminal be applied to as shown in Figure 1;
The celestial image during various criterion that Fig. 3 provides for the embodiment of the present invention captured by terminal;
The schematic flow sheet of the specific embodiment of the celestial body image pickup method that Fig. 4 provides for the embodiment of the present invention;
The structural representation of a kind of celestial body filming apparatus that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the acquisition unit of a kind of celestial body filming apparatus that Fig. 6 provides for the embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description, use the suffix of such as " module ", " parts " or " unit " for representing element only in order to be conducive to explanation of the present invention, itself is specific meaning not.Therefore, " module " and " parts " can mixedly use.
Mobile terminal can be implemented in a variety of manners.Such as, the terminal described in the present invention can comprise the such as mobile terminal of mobile phone, smart phone, notebook computer, digit broadcasting receiver, PDA (personal digital assistant), PAD (panel computer), PMP (portable media player), guider etc. and the fixed terminal of such as digital TV, desktop computer etc.Below, suppose that terminal is mobile terminal.But it will be appreciated by those skilled in the art that except the element except being used in particular for mobile object, structure according to the embodiment of the present invention also can be applied to the terminal of fixed type.
Fig. 1 is the hardware configuration signal of the mobile terminal realizing each embodiment of the present invention.
Mobile terminal 100 can comprise wireless communication unit 110, A/V (audio/video) input unit 120, user input unit 130, sensing cell 140, output unit 150, memory 160, interface unit 170, controller 180 and power subsystem 190 etc.Fig. 1 shows the mobile terminal with various assembly, it should be understood that, does not require to implement all assemblies illustrated.Can alternatively implement more or less assembly.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assembly, and it allows the radio communication between mobile terminal 100 and wireless communication system or network.Such as, wireless communication unit can comprise at least one in broadcast reception module 111, mobile communication module 112, wireless Internet module 113, short range communication module 114 and positional information module 115.
Broadcast reception module 111 via broadcast channel from external broadcasting management server receiving broadcast signal and/or broadcast related information.Broadcast channel can comprise satellite channel and/or terrestrial channel.Broadcast management server can be generate and send the server of broadcast singal and/or broadcast related information or the broadcast singal generated before receiving and/or broadcast related information and send it to the server of terminal.Broadcast singal can comprise TV broadcast singal, radio signals, data broadcasting signal etc.And broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast related information also can provide via mobile communications network, and in this case, broadcast related information can be received by mobile communication module 112.Broadcast singal can exist in a variety of manners, such as, it can exist with the form of the electronic service guidebooks (ESG) of the electronic program guides of DMB (DMB) (EPG), digital video broadcast-handheld (DVB-H) etc.Broadcast reception module 111 can by using the broadcast of various types of broadcast system Received signal strength.Especially, broadcast reception module 111 can by using such as multimedia broadcasting-ground (DMB-T), DMB-satellite (DMB-S), digital video broadcasting-hand-held (DVB-H), the digit broadcasting system receiving digital broadcast of the Radio Data System, received terrestrial digital broadcasting integrated service (ISDB-T) etc. of forward link media (MediaFLO).Broadcast reception module 111 can be constructed to be applicable to providing the various broadcast system of broadcast singal and above-mentioned digit broadcasting system.The broadcast singal received via broadcast reception module 111 and/or broadcast related information can be stored in memory 160 (or storage medium of other type).
Radio signal is sent at least one in base station (such as, access point, Node B etc.), exterior terminal and server and/or receives radio signals from it by mobile communication module 112.Various types of data that such radio signal can comprise voice call signal, video calling signal or send according to text and/or Multimedia Message and/or receive.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.This module can be inner or be externally couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by this module can comprise WLAN (WLAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave access), HSDPA (high-speed downlink packet access) etc.
Short range communication module 114 is the modules for supporting junction service.Some examples of short-range communication technology comprise bluetooth TM, radio-frequency (RF) identification (RFID), Infrared Data Association (IrDA), ultra broadband (UWB), purple honeybee TM etc.
Positional information module 115 is the modules of positional information for checking or obtain mobile terminal.The typical case of positional information module is GPS (global positioning system).According to current technology, GPS module 115 calculates from the range information of three or more satellite and correct time information and for the Information application triangulation calculated, thus calculates three-dimensional current location information according to longitude, latitude and pin-point accuracy.Current, the method for calculating location and temporal information uses three satellites and by the error of the position that uses an other satellite correction calculation to go out and temporal information.In addition, GPS module 115 can carry out computational speed information by Continuous plus current location information in real time.
A/V input unit 120 is for audio reception or vision signal.A/V input unit 120 can comprise camera 121 and microphone 1220, and the view data of camera 121 to the static images obtained by image capture apparatus in Video Capture pattern or image capture mode or video processes.Picture frame after process may be displayed on display unit 151.Picture frame after camera 121 processes can be stored in memory 160 (or other storage medium) or via wireless communication unit 110 and send, and can provide two or more cameras 1210 according to the structure of mobile terminal.Such acoustic processing can via microphones sound (voice data) in telephone calling model, logging mode, speech recognition mode etc. operational mode, and can be voice data by microphone 122.Audio frequency (voice) data after process can be converted to the formatted output that can be sent to mobile communication base station via mobile communication module 112 when telephone calling model.Microphone 122 can be implemented various types of noise and eliminate (or suppress) algorithm and receiving and sending to eliminate (or suppression) noise or interference that produce in the process of audio signal.
User input unit 130 can generate key input data to control the various operations of mobile terminal according to the order of user's input.User input unit 130 allows user to input various types of information, and keyboard, the young sheet of pot, touch pad (such as, detecting the touch-sensitive assembly of the change of the resistance, pressure, electric capacity etc. that cause owing to being touched), roller, rocking bar etc. can be comprised.Especially, when touch pad is superimposed upon on display unit 151 as a layer, touch-screen can be formed.
Sensing cell 140 detects the current state of mobile terminal 100, (such as, opening or cancellation state of mobile terminal 100), the position of mobile terminal 100, user for mobile terminal 100 contact (namely, touch input) presence or absence, the orientation of mobile terminal 100, the acceleration or deceleration of mobile terminal 100 move and direction etc., and generate order or the signal of the operation for controlling mobile terminal 100.Such as, when mobile terminal 100 is embodied as sliding-type mobile phone, sensing cell 140 can sense this sliding-type phone and opens or cancel.In addition, whether whether sensing cell 140 can detect power subsystem 190 provides electric power or interface unit 170 to couple with external device (ED).Sensing cell 140 can comprise proximity transducer 1410 and will be described this in conjunction with touch-screen below.
Interface unit 170 is used as at least one external device (ED) and is connected the interface that can pass through with mobile terminal 100.Such as, external device (ED) can comprise wired or wireless head-band earphone port, external power source (or battery charger) port, wired or wireless FPDP, memory card port, for connecting the port, audio frequency I/O (I/O) port, video i/o port, ear port etc. of the device with identification module.Identification module can be that storage uses the various information of mobile terminal 100 for authentication of users and can comprise subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) etc.In addition, the device (hereinafter referred to " recognition device ") with identification module can take the form of smart card, and therefore, recognition device can be connected with mobile terminal 100 via port or other jockey.Interface unit 170 may be used for receive from external device (ED) input (such as, data message, electric power etc.) and the input received be transferred to the one or more element in mobile terminal 100 or may be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 100 is connected with external base, interface unit 170 can be used as to allow by it electric power to be provided to the path of mobile terminal 100 from base or can be used as the path that allows to be transferred to mobile terminal by it from the various command signals of base input.The various command signal inputted from base or electric power can be used as and identify whether mobile terminal is arranged on the signal base exactly.Output unit 150 is constructed to provide output signal (such as, audio signal, vision signal, alarm signal, vibration signal etc.) with vision, audio frequency and/or tactile manner.Output unit 150 can comprise display unit 151, dio Output Modules 152, alarm unit 153 etc.
Display unit 151 may be displayed on the information of process in mobile terminal 100.Such as, when mobile terminal 100 is in telephone calling model, display unit 151 can show with call or other communicate (such as, text messaging, multimedia file are downloaded etc.) be correlated with user interface (UI) or graphic user interface (GUI).When mobile terminal 100 is in video calling pattern or image capture mode, display unit 151 can the image of display capture and/or the image of reception, UI or GUI that video or image and correlation function are shown etc.
Meanwhile, when display unit 151 and touch pad as a layer superposed on one another to form touch-screen time, display unit 151 can be used as input unit and output device.Display unit 151 can comprise at least one in liquid crystal display (LCD), thin-film transistor LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc.Some in these displays can be constructed to transparence and watch from outside to allow user, and this can be called transparent display, and typical transparent display can be such as TOLED (transparent organic light emitting diode) display etc.According to the specific execution mode wanted, mobile terminal 100 can comprise two or more display units (or other display unit), such as, mobile terminal can comprise outernal display unit (not shown) and inner display unit (not shown).Touch-screen can be used for detecting touch input pressure and touch input position and touch and inputs area.
When dio Output Modules 152 can be under the isotypes such as call signal receiving mode, call mode, logging mode, speech recognition mode, broadcast reception mode at mobile terminal, voice data convert audio signals that is that wireless communication unit 110 is received or that store in memory 160 and exporting as sound.And dio Output Modules 152 can provide the audio frequency relevant to the specific function that mobile terminal 100 performs to export (such as, call signal receives sound, message sink sound etc.).Dio Output Modules 152 can comprise loud speaker, buzzer etc.
Alarm unit 153 can provide and export that event informed to mobile terminal 100.Typical event can comprise calling reception, message sink, key signals input, touch input etc.Except audio or video exports, alarm unit 153 can provide in a different manner and export with the generation of notification event.Such as, alarm unit 153 can provide output with the form of vibration, when receive calling, message or some other enter communication (incomingcommunication) time, alarm unit 153 can provide sense of touch to export (that is, vibrating) to notify to user.By providing such sense of touch to export, even if when the mobile phone of user is in the pocket of user, user also can identify the generation of various event.Alarm unit 153 also can provide the output of the generation of notification event via display unit 151 or dio Output Modules 152.
Memory 160 software program that can store process and the control operation performed by controller 180 etc., or temporarily can store oneself through exporting the data (such as, telephone directory, message, still image, video etc.) that maybe will export.And, memory 160 can store about when touch be applied to touch-screen time the vibration of various modes that exports and the data of audio signal.
Memory 160 can comprise the storage medium of at least one type, described storage medium comprises flash memory, hard disk, multimedia card, card-type memory (such as, SD or DX memory etc.), random access storage device (RAM), static random-access memory (SRAM), read-only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), programmable read only memory (PROM), magnetic storage, disk, CD etc.And mobile terminal 100 can be connected the memory function of execute store 160 network storage device with by network cooperates.
Controller 180 controls the overall operation of mobile terminal usually.Such as, controller 180 performs the control relevant to voice call, data communication, video calling etc. and process.In addition, controller 180 can comprise the multi-media module 1810 for reproducing (or playback) multi-medium data, and multi-media module 1810 can be configured in controller 180, or can be configured to be separated with controller 180.Controller 180 can pattern recognition process, is identified as character or image so that input is drawn in the handwriting input performed on the touchscreen or picture.
Power subsystem 190 receives external power or internal power and provides each element of operation and the suitable electric power needed for assembly under the control of controller 180.
Various execution mode described herein can to use such as computer software, the computer-readable medium of hardware or its any combination implements.For hardware implementation, execution mode described herein can by using application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, being designed at least one performed in the electronic unit of function described herein and implementing, in some cases, such execution mode can be implemented in controller 180.For implement software, the execution mode of such as process or function can be implemented with allowing the independent software module performing at least one function or operation.Software code can be implemented by the software application (or program) write with any suitable programming language, and software code can be stored in memory 160 and to be performed by controller 180.
So far, oneself is through the mobile terminal according to its functional description.Below, for the sake of brevity, by the slide type mobile terminal that describes in various types of mobile terminals of such as folded form, board-type, oscillating-type, slide type mobile terminal etc. exemplarily.Therefore, the present invention can be applied to the mobile terminal of any type, and is not limited to slide type mobile terminal.
Based on above-mentioned mobile terminal hardware configuration, each embodiment of the inventive method is proposed.Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Fig. 2 is the schematic flow sheet of the celestial body image pickup method being applied to mobile terminal as shown in Figure 1, and the method comprises:
S201: obtain the celestial image corresponding with during standard and the hour angle with terminal corresponding during standard celestial body to be observed during terminal at least two standards within a predetermined period of time;
Wherein, during standard, the time in the time zone residing for terminal belonging to geographical position.Such as, if geographical position is in China residing for terminal, when then adopting eastern 8th district and Beijing time, during standard during Er Dong 8th district=GMT+eastern time zone number, for example, if during the standard in London, (GMT) is point in morning eight October 1, is so point in afternoon four October 1 during Pekinese's standard.
Hour angle (HA, HourAngle), for celestial body is relative to meridian angular distance, borrowing time unit hour measures, 1HA=15 degree.
It should be noted that, terminal, by repeatedly taking celestial body in predetermined time section, obtains multiple celestial images, prepares for obtaining final celestial image subsequently through the multiple celestial image captured by superposition.In addition, terminal obtains the hour angle of corresponding terminal celestial body to be observed when multiple standard, for follow-up when superposing multiple celestial image, makes celestial body to be observed be in same position on image.That is, terminal, when not using equatorial telescope, does not affect by earth rotation when also can ensure shooting celestial body.
Exemplarily, terminal obtains the hour angle of the terminal to be observed celestial body corresponding with during standard, specifically comprises: terminal, when Current standards, obtains the latitude and longitude information in geographical position residing for self, and the elevation angle of self current pose and azimuth; When terminal is according to Current standards, latitude and longitude information, the elevation angle and azimuth obtain local sidereal time and right ascension corresponding to celestial body to be observed; Terminal obtains the hour angle of the terminal to be observed celestial body corresponding with during Current standards according to local sidereal time and right ascension corresponding to celestial body to be observed.
Wherein, local sidereal time is the time measured for standard with local longitude, the hour angle of terminal celestial body to be observed corresponding during for calculating Current standards.
Right ascension is the longitude of celestial body on celestial sphere, the hour angle of terminal celestial body to be observed corresponding during for calculating Current standards.It should be noted that, the right ascension that celestial body to be observed is corresponding utilizes celestial coordinates system to search and obtains.Such as, the coordinate of m65 (extragalactic system) on celestial sphere in Leo is: 11h18m00s.
Preferably, terminal obtains the elevation angle and the azimuth of self current pose when Current standards, specifically comprise: terminal when Current standards, by following at least one device: compass, gyroscope and gravity sensor obtain the elevation angle and the azimuth of self current residing attitude.
Preferably, when terminal is according to Current standards, latitude and longitude information, the elevation angle and azimuth obtain local sidereal time, specifically comprise: when terminal is according to Current standards, latitude and longitude information, by formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, calculates local sidereal time; Wherein, s is local sidereal time; S
0, be Greenwich local sidereal time during universal time zero on the same day; M, during for Current standards, the time in the time zone namely residing for terminal belonging to geographical position; λ, the longitude information in geographical position residing for terminal; Nh, the time difference of the relative GMT of the time zone residing for terminal belonging to geographical position; μ is conversion coefficient.
It should be noted that, Greenwich S local sidereal time during universal time zero on the same day
0can obtain by searching astronomical yearbook; The value of conversion coefficient μ is μ=1/365.2422.
For example, during known Current standards and Beijing time M=19h35m; Look into Greenwich S local sidereal time during the known universal time zero on the 31st in March of astronomical universal year calendar
0=12h33m52s; Longitude λ=the 7h55m04s in Nanjing; The time difference Nh of the relative GMT of the time zone belonging to Nanjing is 8h, and conversion coefficient μ=1/365.2422, by formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, can calculate Nanjing s=8h05m50s local sidereal time now.
Preferably, terminal obtains the hour angle of the terminal to be observed celestial body corresponding with during Current standards according to local sidereal time and right ascension corresponding to celestial body to be observed, specifically comprise: terminal is according to s and right ascension α corresponding to celestial body to be observed local sidereal time, pass through formula: t=s-α, calculate the hour angle t of the terminal corresponding with during Current standards celestial body to be observed.
S202: terminal according to during standard and the hour angle of the terminal corresponding with during standard celestial body to be observed, relative to the hour angle difference during primary standard when calculating each standard;
It should be noted that, for same celestial body in different location, the viewed hour angle of different time is different, therefore, the hour angle that terminal obtains when different standards is different.
Wherein, during primary standard, during standard for terminal first time shooting celestial body in predetermined time section.
S203: terminal according to during each standard relative to hour angle difference during primary standard, each celestial image corresponding with during standard is superposed, obtains final celestial image.
It should be noted that, due to earth rotation impact, the celestial body of terminal camera shooting is mobile, see Fig. 3, celestial image when it illustrates various criterion captured by terminal, can find out, the celestial body when primary standard captured by terminal is positioned at the middle of image, i.e. the position of the solid line circle of a figure in Fig. 3; And the celestial body crossed captured by a period of time terminal there occurs movement, the celestial body position in the picture when namely the position of the solid line circle of b figure is Current standards in Fig. 3, the position in the picture of the celestial body when position of dashed circle is primary standard.Therefore, terminal by according to during each standard relative to hour angle difference during primary standard, each celestial image corresponding with during standard is superposed, can make mobile after celestial body remain at same position.
You need to add is that, consistent in order to ensure the lap of each celestial image corresponding with during standard, need to divide its non-overlapping portion to cut out, like this, the image size of final celestial image can be less than celestial image corresponding during primary standard.Such as, celestial image corresponding during primary standard is 1,320 ten thousand pixels, and after the non-overlapping portion of each celestial image corresponding with during standard is divided and cut out, the final celestial image obtained is reduced to 8,000,000 pixels.
The schematic flow sheet of the specific embodiment of the celestial body image pickup method that Fig. 4 provides for the embodiment of the present invention, the method comprises:
S401: obtain the celestial image corresponding with during this nine standards during terminal nine standards within a predetermined period of time;
S402: terminal obtains the latitude and longitude information in geographical position residing for the terminal corresponding with during nine standards respectively, and the elevation angle of attitude residing for terminal and azimuth;
S403: terminal utilizes formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, and the latitude and longitude information corresponding with during nine standards, calculate the local sidereal time s corresponding with during nine standards respectively;
S404: terminal is according to the elevation angle, and azimuth and latitude and longitude information obtain celestial body to be observed, and obtain the right ascension α corresponding with this celestial body according to celestial body to be observed;
S405: terminal, according to the local sidereal time s and right ascension α corresponding with during nine standards, by formula t=s-α, calculates the hour angle t of the terminal to be observed celestial body corresponding with during nine standards;
By step S402-step S405, during terminal nine standards within a predetermined period of time, obtain the hour angle of nine corresponding terminal celestial bodies to be observed.
S406: terminal according to the hour angle corresponding with during nine standards, relative to the hour angle difference during primary standard when calculating each standard;
S407: terminal according to during each standard relative to hour angle difference during primary standard, each celestial image corresponding with during standard is superposed, obtains final celestial image.
In sum, embodiments provide a kind of celestial body image pickup method, by obtaining the hour angle of the celestial image corresponding with during standard and terminal celestial body to be observed during terminal at least two standards within a predetermined period of time; According to during standard and the hour angle corresponding with during standard, relative to the hour angle difference during primary standard when calculating each standard; According to during each standard relative to hour angle difference during primary standard, each celestial image corresponding with during standard is superposed, obtain final celestial image, terminal is made to shoot celestial image clearly when not using equatorial telescope, greatly reduce the hardware cost of terminal taking celestial body, for commonness photograph, fan provides convenience.
The structural representation of a kind of celestial body filming apparatus that Fig. 5 provides for the embodiment of the present invention, this device 50 is applied to terminal, comprising: obtain unit 501, computing unit 502 and superpositing unit 503, wherein:
Obtain unit 501, during for the standard of at least two within a predetermined period of time, obtain the celestial image corresponding with during standard and the hour angle with terminal corresponding during standard celestial body to be observed;
Computing unit 502, for according to during standard and obtain the hour angle of the terminal to be observed celestial body corresponding with during standard that unit 501 obtains, relative to the hour angle difference during primary standard when calculating each standard;
Superpositing unit 503, for calculate according to computing unit 502 each standard time relative to hour angle difference during primary standard, by obtain unit 501 obtain each and standard time corresponding celestial image superpose, obtain final celestial image.
Exemplarily, Fig. 6 shows the structural representation of the acquisition unit of a kind of celestial body filming apparatus that the embodiment of the present invention provides, see Fig. 6, obtain unit 501 to comprise: first obtains subelement 5011, second obtains subelement 5012 and hour angle acquisition subelement 5013, wherein: first obtains subelement 5011, for when Current standards, obtain the latitude and longitude information in geographical position residing for self, and the elevation angle of self current pose and azimuth; Second obtains subelement 5012, during for obtaining according to first the Current standards that subelement 5011 obtains, and latitude and longitude information, the elevation angle and azimuth obtain local sidereal time and right ascension corresponding to celestial body to be observed; Hour angle obtains subelement 5013, for obtaining according to second the hour angle that local sidereal time that subelement 5012 obtains and right ascension corresponding to celestial body to be observed obtain the terminal to be observed celestial body corresponding with during Current standards.
Preferably, first obtains subelement 5011, specifically for: when Current standards, by following at least one device: compass, gyroscope and gravity sensor obtain the elevation angle and the azimuth of self current residing attitude.
Preferably, second obtains subelement 5012, specifically for: when obtaining the Current standards of subelement 5011 acquisition according to first, latitude and longitude information, by formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, calculates local sidereal time; Wherein, s is local sidereal time; S
0, be Greenwich local sidereal time during universal time zero on the same day; M, during for Current standards; λ, the longitude information in geographical position residing for terminal; Nh, the time difference of the relative GMT of the time zone residing for terminal belonging to geographical position; μ is conversion coefficient.
Preferably, hour angle obtains subelement 5013, specifically for: according to for obtaining according to second the s and right ascension α corresponding to celestial body to be observed local sidereal time that subelement 5012 obtains, passing through formula: t=s-α, calculating the hour angle t of the terminal corresponding with during Current standards celestial body to be observed.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of hardware embodiment, software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (10)
1. a celestial body image pickup method, is applied to terminal, it is characterized in that, comprising:
During described terminal at least two standards within a predetermined period of time, obtain the celestial image corresponding with during described standard and the hour angle with described terminal celestial body to be observed corresponding during described standard;
Described terminal according to during described standard and the hour angle of the described terminal to be observed celestial body corresponding with during described standard, relative to the hour angle difference during primary standard when calculating each standard;
Described terminal according to during described each standard relative to hour angle difference during primary standard, each celestial image corresponding with during described standard is superposed, obtains final celestial image.
2. method according to claim 1, is characterized in that, described terminal obtains the hour angle of the described terminal to be observed celestial body corresponding with during described standard, specifically comprises:
Described terminal, when Current standards, obtains the latitude and longitude information in geographical position residing for self, and the elevation angle of self current pose and azimuth; When described terminal is according to described Current standards, described latitude and longitude information, the described elevation angle and azimuth obtain local sidereal time and right ascension corresponding to celestial body to be observed; Described terminal obtains the hour angle of the described terminal to be observed celestial body corresponding with during described Current standards according to described local sidereal time and right ascension corresponding to described celestial body to be observed.
3. method according to claim 2, is characterized in that, described terminal obtains the elevation angle and the azimuth of self current pose when Current standards, specifically comprise:
Described terminal when Current standards, by following at least one device: compass, gyroscope and gravity sensor obtain the elevation angle and the azimuth of self current residing attitude described.
4. method according to claim 2, is characterized in that, when described terminal is according to described Current standards, and described latitude and longitude information, the described elevation angle and azimuth obtain local sidereal time, specifically comprise:
When described terminal is according to described Current standards, described latitude and longitude information, by formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, calculates described local sidereal time; Wherein, s is described local sidereal time; S
0, be Greenwich local sidereal time during universal time zero on the same day; M, during for described Current standards; λ, the longitude information in geographical position residing for described terminal; Nh, the time difference of the time zone relative GMT residing for described terminal belonging to geographical position; μ is conversion coefficient.
5. method according to claim 2, is characterized in that, described terminal obtains the hour angle of the described terminal to be observed celestial body corresponding with during described Current standards according to described local sidereal time and right ascension corresponding to described celestial body to be observed, specifically comprises:
Described terminal, according to s and right ascension α corresponding to described celestial body to be observed described local sidereal time, is passed through formula: t=s-α, is calculated the hour angle t of the described terminal to be observed celestial body corresponding with during described Current standards.
6. a celestial body filming apparatus, is applied to terminal, it is characterized in that, comprising: obtain unit, computing unit and superpositing unit, wherein:
Described acquisition unit, during for the standard of at least two within a predetermined period of time, obtains the celestial image corresponding with during described standard and the hour angle with described terminal celestial body to be observed corresponding during described standard;
Described computing unit, for according to during described standard and the hour angle of the described terminal to be observed celestial body corresponding with during described standard that obtains of described acquisition unit, relative to the hour angle difference during primary standard when calculating each standard;
Described superpositing unit, for calculate according to described computing unit described each standard time relative to hour angle difference during primary standard, each celestial image corresponding with during described standard that described acquisition unit obtains is superposed, obtains final celestial image.
7. device according to claim 6, is characterized in that, described acquisition unit comprises: first obtains subelement, second obtains subelement and hour angle acquisition subelement, wherein:
Described first obtains subelement, for when Current standards, obtains the latitude and longitude information in geographical position residing for self, and the elevation angle of self current pose and azimuth;
Described second obtains subelement, during for obtaining according to described first the described Current standards that subelement obtains, and described latitude and longitude information, the described elevation angle and azimuth obtain local sidereal time and right ascension corresponding to celestial body to be observed;
Described hour angle obtains subelement, for obtaining according to described second the hour angle that described local sidereal time that subelement obtains and right ascension corresponding to described celestial body to be observed obtain the described terminal to be observed celestial body corresponding with during described Current standards.
8. device according to claim 7, is characterized in that, described first obtains subelement, specifically for:
When Current standards, by following at least one device: compass, gyroscope and gravity sensor obtain the elevation angle and the azimuth of self current residing attitude described.
9. device according to claim 7, is characterized in that, described second obtains subelement, specifically for:
When obtaining the described Current standards of subelement acquisition according to described first, described latitude and longitude information, by formula s=S
0+ (M-Nh+ λ)+(M-Nh) μ, calculates described local sidereal time; Wherein, s is described local sidereal time; S
0, be Greenwich local sidereal time during universal time zero on the same day; M, during for described Current standards; λ, the longitude information in geographical position residing for described terminal; Nh, the time difference of the time zone relative GMT residing for described terminal belonging to geographical position; μ is conversion coefficient.
10. device according to claim 7, is characterized in that, described hour angle obtains subelement, specifically for:
According to the s and right ascension α corresponding to described celestial body to be observed described local sidereal time for obtaining that subelement obtains according to described second, passing through formula: t=s-α, calculating the hour angle t of the described terminal to be observed celestial body corresponding with during described Current standards.
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