CN112529809B - Star image chromatic aberration correction method, device, storage medium and aerospace observation equipment - Google Patents
Star image chromatic aberration correction method, device, storage medium and aerospace observation equipment Download PDFInfo
- Publication number
- CN112529809B CN112529809B CN202011483261.5A CN202011483261A CN112529809B CN 112529809 B CN112529809 B CN 112529809B CN 202011483261 A CN202011483261 A CN 202011483261A CN 112529809 B CN112529809 B CN 112529809B
- Authority
- CN
- China
- Prior art keywords
- star
- standard
- determining
- mean square
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000004075 alteration Effects 0.000 title claims abstract description 30
- 238000012937 correction Methods 0.000 title claims abstract description 13
- 238000004422 calculation algorithm Methods 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000003384 imaging method Methods 0.000 abstract description 5
- 238000004891 communication Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- KLDZYURQCUYZBL-UHFFFAOYSA-N 2-[3-[(2-hydroxyphenyl)methylideneamino]propyliminomethyl]phenol Chemical compound OC1=CC=CC=C1C=NCCCN=CC1=CC=CC=C1O KLDZYURQCUYZBL-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 201000001098 delayed sleep phase syndrome Diseases 0.000 description 1
- 208000033921 delayed sleep phase type circadian rhythm sleep disease Diseases 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
Abstract
The disclosure relates to a starry sky image chromatic aberration correction method, a device, a storage medium and space observation equipment, wherein the method is applied to the space observation equipment, the space observation equipment is provided with a plurality of filters with different wave bands, and the method comprises the following steps: acquiring star images corresponding to each wave band which is positioned at the same shooting position at the same moment; determining a star data set corresponding to a star image of each wave band aiming at the star image; aiming at the star image of each wave band, determining the total mean square error of the star image according to the mean square error and the declination mean square error of the star image; the minimum total mean square error is determined in the total mean square error of the starry sky images of all the wave bands, and the filter corresponding to the wave band corresponding to the minimum total mean square error is determined as the target filter, so that the influence of chromatic aberration on the observation precision of the spaceflight observation equipment is eliminated, the imaging quality of the starry sky images is improved, and the filter capable of maximally reducing the influence of chromatic aberration on the observation measurement precision can be determined.
Description
Technical Field
The disclosure relates to the technical field of aerospace observation, in particular to a starry sky image chromatic aberration correction method, a device, a storage medium and aerospace observation equipment.
Background
In the related art, a main means for scientific researchers to observe stars running on a geosynchronous orbit is foundation optical observation. In foundation optical observation, a refractive astronomical telescope is mainly selected as an observation platform. The observation of the star is mainly the positioning, and chromatic aberration affects the measurement accuracy of the telescope in the process of positioning the star by using the refractive astronomical telescope.
Disclosure of Invention
The invention aims to provide a starry sky image chromatic aberration correction method, a device, a storage medium and space observation equipment, which solve the problem that the space observation equipment has low side position measurement precision on stars due to chromatic aberration pairs.
To achieve the above object, in a first aspect, the present disclosure provides a method for correcting chromatic aberration of an sky image, the method being applied to a space observation apparatus provided with a plurality of filters of different wavelength bands, the method comprising:
acquiring star images corresponding to each wave band at the same moment and at the same shooting position;
determining a star data set corresponding to the star image according to the star image of each wave band, wherein the star data set comprises actual right ascent values, standard right ascent values, actual declination values and standard declination values corresponding to all stars in the star image;
aiming at the star image of each wave band, determining the mean square error of the star image according to the actual mean square value and the standard mean square value of all stars in the star image, and determining the mean square error of all stars in the star image according to the actual mean square value and the standard mean square value of all stars in the star image;
for each wave band of the starry sky image, determining the total mean square error of the starry sky image according to the mean square error and the mean square error of the starry sky image;
and determining the minimum total mean square error in the total mean square error of the starry sky images of all the wave bands, and determining the filter corresponding to the wave band corresponding to the minimum total mean square error as a target filter.
Optionally, the determining, for each star image of the band, a star data set corresponding to the star image includes:
aiming at the star image of each wave band, identifying a star table area of each star in the star image according to a quadrilateral identification algorithm matched with the star table and a preset star table;
determining an actual right ascension value and an actual declination value of each star according to a star table area and a preset star position algorithm of each star, and determining a standard right ascension value and a standard declination value of each star according to the star table area and the preset star table of each star;
determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value;
the standard right ascension value and the standard declination value of each star are stored in the preset star table.
Optionally, the determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value includes:
forming a corresponding relation between each star data and a data identifier corresponding to the star data, wherein the star data comprises one of an actual right ascension value, a standard right ascension value, an actual declination value and a standard declination value;
and storing all the obtained corresponding relations in an initial data set to obtain a star data set corresponding to the star image.
Optionally, the bands include 350 nm-500 nm, 500 nm-650 nm, 650 nm-850 nm, and 750 nm-900 nm.
In a second aspect, the present disclosure provides a sky image chromatic aberration correction device, the device being applied to a space observation apparatus provided with a plurality of filters of different wavelength bands, the device comprising:
the acquisition module is used for acquiring star images corresponding to each wave band which is positioned at the same shooting position at the same moment;
the first determining module is used for determining a star data set corresponding to the star image according to the star image of each wave band, wherein the star data set comprises actual right ascent values, standard right ascent values, actual declination values and standard declination values corresponding to all stars in the star image;
the second determining module is used for determining the mean square error of the right-hand space image according to the actual right-hand space values and the standard right-hand space values of all stars in the right-hand space image and determining the mean square error of the right-hand space image according to the actual right-hand space values and the standard right-hand space values of all stars in the right-hand space image;
the third determining module is used for determining the total mean square error of the starry sky image according to the mean square error and the declination mean square error of the starry sky image aiming at the starry sky image of each wave band;
and the fourth determining module is used for determining the minimum total mean square error in the total mean square error of the starry sky images of all the wave bands and determining the filter corresponding to the wave band corresponding to the minimum total mean square error as the target filter.
Optionally, the first determining module includes:
the identification sub-module is used for identifying a star table area of each star in the star image according to a quadrilateral identification algorithm matched with the star table and a preset star table aiming at the star image of each wave band;
the first determining submodule is used for determining an actual right ascension value and an actual declination value of each star according to a star table area and a preset star position algorithm of each star, and determining a standard right ascension value and a standard declination value of each star according to the star table area and the preset star table of each star;
the second determining submodule is used for determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value;
the standard right ascension value and the standard declination value of each star are stored in the preset star table.
Optionally, the second determining submodule includes:
the corresponding relation determining sub-module is used for forming a corresponding relation between each star data and a data identifier corresponding to the star data, wherein the star data comprises one of an actual right ascent value, a standard right ascent value, an actual declination value and a standard declination value;
and the set determination submodule is used for storing all the obtained corresponding relations in the initial data set to obtain a star data set corresponding to the star image.
Optionally, the bands include 350 nm-500 nm, 500 nm-650 nm, 650 nm-850 nm, and 750 nm-900 nm.
In a third aspect, the present disclosure provides a computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor implements the steps of the method according to any of the first aspects.
In a fourth aspect, the present disclosure provides a aerospace viewing device comprising a plurality of different band filters disposed on a multi-channel aerospace viewing device;
the aerospace viewing device further comprises a processor for performing the steps of the method of any of the first aspects.
By the technical scheme, the space observation equipment is provided with the optical filters with a plurality of different wave bands, so that the influence of chromatic aberration on the observation precision of the space observation equipment is eliminated, and the imaging quality of a starry sky image is improved; and the declination of the star field images obtained under the filters with different wave bands are analyzed, and the filter which maximally reduces the influence of chromatic aberration on the observation and measurement precision is determined.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
fig. 1 is a flow chart illustrating a method of correcting chromatic aberration of a starry sky image according to an exemplary embodiment.
Fig. 2 is a block diagram illustrating a starry sky image color difference correction device according to an exemplary embodiment.
FIG. 3 is a block diagram of an aerospace viewing device according to an example embodiment.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
As the background technology is adopted, the measurement accuracy of star observation is greatly affected by chromatic aberration, and the problem of chromatic aberration can cause the problem of blurred edges of star images, which can affect the outline of the star images, the photometry calibration, the star image centering, the astronomical positioning and the like. Similarly, the effect of chromatic aberration is greater when observing the spatial debris. Wherein, the space debris refers to the product of human space activity. The space environment pollution-free rocket comprises a rocket body and a satellite body for completing a task, a jet of the rocket, a throwing object in the process of executing a space task, fragments generated by collision between space objects and the like, and is a main pollution source of the space environment. Due to certain requirements, observation of space debris running on the geosynchronous orbit is required, and the observation accuracy is one of important indexes.
In order to solve the problems, the disclosure provides a method, a device, a storage medium and a space observation device for correcting chromatic aberration of a star image, wherein the space observation device is provided with a plurality of filters with different wave bands, so that the influence of chromatic aberration on the observation precision of the space observation device is eliminated, and the imaging quality of the star image is improved; and the declination of the star field images obtained under the filters with different wave bands are analyzed, and the filter which maximally reduces the influence of chromatic aberration on the observation and measurement precision is determined.
The disclosure is further described below with reference to the accompanying drawings.
Fig. 1 is a flow chart illustrating a method of correcting chromatic aberration of a starry sky image according to an exemplary embodiment. The starry sky image chromatic aberration correction method can be applied to, for example, a space observation device provided with a plurality of filters with different wave bands, as shown in fig. 1, and comprises the following steps:
s101, acquiring star images corresponding to each wave band which is positioned at the same shooting position at the same moment.
S102, determining a star data set corresponding to the star image according to the star image of each wave band, wherein the star data set comprises actual right ascent values, standard right ascent values, actual declination values and standard declination values corresponding to all stars in the star image.
The right ascension and the declination are coordinates in astronomy, the right ascension and the declination are coordinates taking the earth center as the center, taking the end point of the earth axis extension line as the zenith, a group of planes parallel to the equatorial plane are declination, and the right ascension is perpendicular to the declination. The method comprises the step of determining the position coordinates of stars in astronomy through analyzing and processing star images.
S103, determining the mean square error of the right-hand space image according to the actual right-hand space values and the standard right-hand space values of all stars in the right-hand space image and determining the mean square error of all stars in the right-hand space image according to the actual right-hand space values and the standard right-hand space values of all stars in the right-hand space image.
Where mean square error is a measure reflecting the degree of difference between the estimated and estimated quantities, in other words, the expected value of the square of the difference between the estimated value of the parameter (e.g., the actual declination value) and the true value of the parameter (the standard declination value). The mean square error can evaluate the change degree of the data, and the smaller the value of the mean square error is, the better the accuracy of the parameter estimation value is.
S104, determining the total mean square error of the starry sky image according to the mean square error and the declination mean square error of the starry sky image for each wave band.
The total mean square error of the star image may be, for example, an evolution result value of a sum of a square of the mean square error of the right ascension and a square of the mean square error of the right ascension.
S105, determining the minimum total mean square error in the total mean square error of the starry sky images of all the wave bands, and determining the filter corresponding to the wave band corresponding to the minimum total mean square error as a target filter.
For example, if there are 3 bands (the first band, the second band and the third band), the obtained starry sky image is 3, and according to the calculation, the total mean square error of the starry sky image of the second band is smaller than the total mean square error of the starry sky image of the second band and the starry sky image of the third band, which indicates that the filter corresponding to the second band is the target filter.
By adopting the technical scheme, the space observation equipment is provided with the optical filters with a plurality of different wave bands, and the optical filters can shield light rays outside the wave bands represented by the optical filters from entering an imaging focal plane, so that the influence of chromatic aberration on the observation precision of the space observation equipment is eliminated, the imaging quality of a star image is improved, the star image profile is reduced, and the superposition of surrounding star image profiles is eliminated; and the declination of the star field images obtained under the filters with different wave bands are analyzed, and the filter which maximally reduces the influence of chromatic aberration on the observation and measurement precision is determined.
In some embodiments, S102 shown in fig. 1 may include the steps of:
firstly, for a star image of each wave band, identifying a star table area of each star in the star image according to a quadrilateral identification algorithm matched with the star table and a preset star table. The quadrilateral identification algorithm is a star table region matching algorithm, specifically, a quadrilateral region formed by four stars in a star image is firstly determined, then a region identical to the quadrilateral region is matched from a preset star table, and the region is a star table region corresponding to the stars in the star image. It should be noted that, the quadrilateral identification algorithm may be obtained from related technologies, and this embodiment is not described herein.
And then, determining an actual right ascent value and an actual declination value of each star according to a star table area and a preset star position algorithm of each star, and determining a standard right ascent value and a standard declination value of each star according to the star table area and the preset star table of each star. The standard declination value and the standard declination value of each star are stored in a preset star table. It should be noted that the star position algorithm may be obtained from related technologies, and this embodiment is not described herein.
And then, determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value.
The standard right ascension value and the standard declination value of each star are stored in the preset star table.
In some embodiments, determining the star data set corresponding to the star image from the actual declination value, the standard declination value, and the standard declination value may include the steps of:
firstly, forming a corresponding relation between each star data and a data identifier corresponding to the star data; and then, storing all the obtained corresponding relations in an initial data set to obtain a star data set corresponding to the star image.
The star data comprises a plurality of types, and concretely comprises an actual declination value, a standard declination value, an actual declination value and a standard declination value.
The data identification can be a numerical identification or a character identification. This embodiment is not limited thereto.
It can be understood that, in order to facilitate the query, a unique data identifier can be set for each star data, and the data identifier and the specific star data form a corresponding relationship, so that a computer can directly query the corresponding data according to the data identifier, and the query efficiency is improved.
In some embodiments, the bands include 350 nm-500 nm, 500 nm-650 nm, 650 nm-850 nm, and 750 nm-900 nm.
The following table is the data of the right ascent and the right ascent corresponding to the star sky images respectively shot at a certain moment and a certain sky region in a plurality of wave bands, and is specific:
as shown in the table, the band range of the B band is 350-500 nanometers, the band range of the V band is 500-650 nanometers, the band range of the R band is 650-850 nanometers, the band range of the I band is 750-900 nanometers, and the measurement accuracy can be reflected according to the table because the total mean square error is high or low, and the measurement accuracy of images in different bands is sequentially from high to low: the R band, the V band, the B band and the I band, so that the filter corresponding to the R band is a target filter.
The present disclosure provides a device for correcting chromatic aberration of a star field image, fig. 2 is a block diagram of a device for correcting chromatic aberration of a star field image, the device 200 being applied to a space observation apparatus, the space observation apparatus being provided with a plurality of filters of different wavebands, the device 200 comprising:
the acquiring module 201 is configured to acquire a star image corresponding to each of the bands at the same time and at the same shooting position;
a first determining module 202, configured to determine, for each of the star images of the band, a star data set corresponding to the star image, where the star data set includes actual right ascent values, standard right ascent values, actual right ascent values, and standard right ascent values corresponding to all stars in the star image;
the second determining module 203 is configured to determine, for each of the star images in the band, a mean square error of the star image according to actual mean square values and standard mean square values of all stars in the star image, and determine a mean square error of the star image according to actual mean square values and standard mean square values of all stars in the star image;
a third determining module 204, configured to determine, for each of the star images of the bands, a total mean square error of the star image according to a mean square error and a mean square error of the star image;
a fourth determining module 205, configured to determine a minimum total mean square error among the total mean square errors of the starry sky images in all the bands, and determine, as the target filter, a filter corresponding to a band corresponding to the minimum total mean square error.
Optionally, the first determining module 202 includes:
the identification sub-module is used for identifying a star table area of each star in the star image according to a quadrilateral identification algorithm matched with the star table and a preset star table aiming at the star image of each wave band;
the first determining submodule is used for determining an actual right ascension value and an actual declination value of each star according to a star table area and a preset star position algorithm of each star, and determining a standard right ascension value and a standard declination value of each star according to the star table area and the preset star table of each star;
the second determining submodule is used for determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value;
the standard right ascension value and the standard declination value of each star are stored in the preset star table.
Optionally, the second determining submodule includes:
the corresponding relation determining sub-module is used for forming a corresponding relation between each star data and a data identifier corresponding to the star data, wherein the star data comprises one of an actual right ascent value, a standard right ascent value, an actual declination value and a standard declination value;
and the set determination submodule is used for storing all the obtained corresponding relations in the initial data set to obtain a star data set corresponding to the star image.
Optionally, the bands include 350 nm-500 nm, 500 nm-650 nm, 650 nm-850 nm, and 750 nm-900 nm.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
The present disclosure also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the starry sky image color difference correction method according to any of the above method embodiments.
The disclosure also provides a space observation device comprising a plurality of filters of different wavebands arranged on the multi-channel space observation device; the aerospace viewing device further comprises a processor, and the processor is configured to execute the steps of the star image chromatic aberration correction method according to any one of the above method embodiments.
FIG. 3 is a block diagram illustrating an aerospace viewing device 300 according to an example embodiment. As shown in fig. 3, the aerospace viewing apparatus 300 may include: a processor 301, a memory 302. The aerospace viewing device 300 may also include one or more of a multimedia component 303, an input/output (I/O) interface 304, and a communication component 305.
The processor 301 is configured to control the overall operation of the aerospace viewing apparatus 300 to perform all or part of the above-mentioned steps of the method for correcting chromatic aberration of a star image. The memory 302 is used to store various types of data to support operation on the aerospace viewing device 300, which may include, for example, instructions for any application or method operating on the aerospace viewing device 300, as well as application-related data, such as contact data, transceived messages, pictures, audio, video, and the like. The Memory 302 may be implemented by any type or combination of volatile or non-volatile Memory devices, such as static random access Memory (Static Random Access Memory, SRAM for short), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM for short), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM for short), programmable Read-Only Memory (Programmable Read-Only Memory, PROM for short), read-Only Memory (ROM for short), magnetic Memory, flash Memory, magnetic disk, or optical disk.
The multimedia component 303 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen, the audio component being for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in the memory 302 or transmitted through the communication component 305. The audio assembly further comprises at least one speaker for outputting audio signals. The I/O interface 304 provides an interface between the processor 301 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons.
The communication component 305 is used for wired or wireless communication between the aerospace viewing device 300 and other devices. Wireless communication, such as Wi-Fi, bluetooth, near field communication (Near Field Communication, NFC for short), 2G, 3G or 4G, or a combination of one or more thereof, the corresponding communication component 305 may thus comprise: wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the aerospace viewing device 300 may be implemented by one or more application specific integrated circuits (Application Specific Integrated Circuit, ASIC), digital signal processor (Digital Signal Processor, DSP), digital signal processing device (Digital Signal Processing Device, DSPD), programmable logic device (Programmable Logic Device, PLD), field programmable gate array (Field Programmable Gate Array, FPGA), controller, microcontroller, microprocessor, or other electronic components for performing the above-described method of correcting star image color differences.
In another exemplary embodiment, a computer readable storage medium is also provided, comprising program instructions which, when executed by a processor, implement the steps of the above-described starry sky image color difference correction method. For example, the computer readable storage medium may be the memory 302 described above including program instructions executable by the processor 301 of the aerospace viewing apparatus 300 to perform the star field image color difference correction method described above.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (6)
1. A method for correcting chromatic aberration of an image of a starry sky, the method being applied to a space observation device provided with a plurality of filters of different wavebands, the method comprising:
acquiring star images corresponding to each wave band at the same moment and at the same shooting position;
determining a star data set corresponding to the star image according to the star image of each wave band, wherein the star data set comprises actual right ascent values, standard right ascent values, actual declination values and standard declination values corresponding to all stars in the star image;
aiming at the star image of each wave band, determining the mean square error of the star image according to the actual mean square value and the standard mean square value of all stars in the star image, and determining the mean square error of all stars in the star image according to the actual mean square value and the standard mean square value of all stars in the star image;
for each wave band of the starry sky image, determining the total mean square error of the starry sky image according to the mean square error and the mean square error of the starry sky image;
determining the minimum total mean square error in the total mean square error of the starry sky images of all the wave bands, and determining the filter corresponding to the wave band corresponding to the minimum total mean square error as a target filter;
the determining, for each of the star images of the band, a star data set corresponding to the star image includes: aiming at the star image of each wave band, identifying a star table area of each star in the star image according to a quadrilateral identification algorithm matched with the star table and a preset star table; determining an actual right ascension value and an actual declination value of each star according to a star table area and a preset star position algorithm of each star, and determining a standard right ascension value and a standard declination value of each star according to the star table area and the preset star table of each star; determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value; the standard declination value and the standard declination value of each star are stored in the preset star table;
the determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value comprises the following steps: forming a corresponding relation between each star data and a data identifier corresponding to the star data, wherein the star data comprises one of an actual right ascension value, a standard right ascension value, an actual declination value and a standard declination value; and storing all the obtained corresponding relations in an initial data set to obtain a star data set corresponding to the star image.
2. The method of claim 1, wherein the bands comprise 350 nm-500 nm, 500 nm-650 nm, 650 nm-850 nm, and 750 nm-900 nm.
3. A sky image chromatic aberration correction device, characterized in that the device is applied to a space observation apparatus provided with a plurality of filters of different wavebands, the device comprising:
the acquisition module is used for acquiring star images corresponding to each wave band which is positioned at the same shooting position at the same moment;
the first determining module is used for determining a star data set corresponding to the star image according to the star image of each wave band, wherein the star data set comprises actual right ascent values, standard right ascent values, actual declination values and standard declination values corresponding to all stars in the star image;
the second determining module is used for determining the mean square error of the right-hand space image according to the actual right-hand space values and the standard right-hand space values of all stars in the right-hand space image and determining the mean square error of the right-hand space image according to the actual right-hand space values and the standard right-hand space values of all stars in the right-hand space image;
the third determining module is used for determining the total mean square error of the starry sky image according to the mean square error and the declination mean square error of the starry sky image aiming at the starry sky image of each wave band;
a fourth determining module, configured to determine a minimum total mean square error among total mean square errors of the starry sky images in all the bands, and determine, as a target filter, a filter corresponding to a band corresponding to the minimum total mean square error;
the first determining module includes: the identification sub-module is used for identifying a star table area of each star in the star image according to a quadrilateral identification algorithm matched with the star table and a preset star table aiming at the star image of each wave band; the first determining submodule is used for determining an actual right ascension value and an actual declination value of each star according to a star table area and a preset star position algorithm of each star, and determining a standard right ascension value and a standard declination value of each star according to the star table area and the preset star table of each star; the second determining submodule is used for determining a star data set corresponding to the star image according to the actual declination value, the standard declination value and the standard declination value; the standard declination value and the standard declination value of each star are stored in the preset star table;
the second determination submodule includes: the corresponding relation determining sub-module is used for forming a corresponding relation between each star data and a data identifier corresponding to the star data, wherein the star data comprises one of an actual right ascent value, a standard right ascent value, an actual declination value and a standard declination value; and the set determination submodule is used for storing all the obtained corresponding relations in the initial data set to obtain a star data set corresponding to the star image.
4. The apparatus of claim 3, wherein the wavelength bands comprise 350 nm-500 nm, 500 nm-650 nm, 650 nm-850 nm, and 750 nm-900 nm.
5. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the method of claim 1 or 2.
6. The space observation device is characterized by comprising a plurality of filters with different wave bands, wherein the filters are arranged on the multi-channel space observation device;
the aerospace viewing device further comprises a processor for performing the steps of the method of claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011483261.5A CN112529809B (en) | 2020-12-15 | 2020-12-15 | Star image chromatic aberration correction method, device, storage medium and aerospace observation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011483261.5A CN112529809B (en) | 2020-12-15 | 2020-12-15 | Star image chromatic aberration correction method, device, storage medium and aerospace observation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112529809A CN112529809A (en) | 2021-03-19 |
| CN112529809B true CN112529809B (en) | 2024-01-02 |
Family
ID=75000518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011483261.5A Active CN112529809B (en) | 2020-12-15 | 2020-12-15 | Star image chromatic aberration correction method, device, storage medium and aerospace observation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112529809B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310616A (en) * | 2001-04-13 | 2002-10-23 | National Aerospace Laboratory Of Japan | Distinguishing method for heavenly body in astronomical observation image |
| CN110793529A (en) * | 2019-12-18 | 2020-02-14 | 福州大学 | Quick matching star map identification method |
| CN111563954A (en) * | 2020-04-20 | 2020-08-21 | 湖北亿咖通科技有限公司 | Starry sky image projection method and device for vehicle |
| CN112019745A (en) * | 2020-08-31 | 2020-12-01 | 苏州振旺光电有限公司 | Method for acquiring target image of sky area and astronomical photographing equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10605603B2 (en) * | 2017-09-11 | 2020-03-31 | Goodrich Corporation | Navigation systems and methods |
-
2020
- 2020-12-15 CN CN202011483261.5A patent/CN112529809B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310616A (en) * | 2001-04-13 | 2002-10-23 | National Aerospace Laboratory Of Japan | Distinguishing method for heavenly body in astronomical observation image |
| CN110793529A (en) * | 2019-12-18 | 2020-02-14 | 福州大学 | Quick matching star map identification method |
| CN111563954A (en) * | 2020-04-20 | 2020-08-21 | 湖北亿咖通科技有限公司 | Starry sky image projection method and device for vehicle |
| CN112019745A (en) * | 2020-08-31 | 2020-12-01 | 苏州振旺光电有限公司 | Method for acquiring target image of sky area and astronomical photographing equipment |
Non-Patent Citations (1)
| Title |
|---|
| 星点坐标辅助的全天区三角形星图识别算法;踪华 等;航空学报(第09期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112529809A (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zacharias et al. | The first US Naval Observatory CCD astrograph catalog | |
| Vavilova et al. | UkrVO joint digitized archive and scientific prospects | |
| US9652847B2 (en) | Method for calibrating a digital optical imaging system having a zoom system, method for correcting aberrations in a digital optical imaging system having a zoom system, and digital optical imaging system | |
| Asadnezhad et al. | Optical system design of star sensor and stray light analysis | |
| US8542947B2 (en) | Method for RPC refinement using ground control information | |
| Manfroid | Stellar calibration of CCD flat fielding. | |
| CN111694016A (en) | Non-interference synthetic aperture super-resolution imaging reconstruction method | |
| CN112529809B (en) | Star image chromatic aberration correction method, device, storage medium and aerospace observation equipment | |
| Seidl et al. | Wide field-of-view all-reflective objectives designed for multispectral image acquisition in photogrammetric applications | |
| US10394007B2 (en) | Reflective optical configurations with prescribed optical field mappings for back-scanned imagers | |
| Eglitis et al. | UV-photometry with the 1.2 m Schmidt Telescope in Baldone | |
| Lazorenko | Astrometric precision of observations at VLT/FORS2 | |
| Bernard et al. | Optimal correction of distortion for high-angular-resolution images: Application to GeMS data | |
| Esposito et al. | AOF upgrade for VLT UT4: an 8m class HST from ground | |
| CN109212747A (en) | Method and device thereof for calibrating optical scanner | |
| CN109029496A (en) | One kind being suitable for large area array optical camera single game eradiation calibrating method | |
| Jo et al. | Early CAL/VAL process for an optical tracking system by Korea | |
| Deqing et al. | An optimized high-performance technique for adaptive optics static aberration correction | |
| Guillard et al. | Optical performance of the JWST/MIRI flight model: characterization of the point spread function at high resolution | |
| Oakes et al. | Techniques and results for the calibration of the MST prototype for the Cherenkov telescope array | |
| CN110728714B (en) | Image processing method and device, storage medium and electronic equipment | |
| Sharifi et al. | Pre-launch geometric calibration methodology of a high-resolution push-broom payload | |
| KR101482637B1 (en) | Method for field of view deviation compensation according to temperature change of mult-band athermalization optic system | |
| CA2826294C (en) | Optic instrument with wavefront analyser | |
| US11454538B1 (en) | Calibration devices and techniques using a radiometric transformation applied to a measurement providing for a simulated measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |