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CN109218719A - The chromatic aberration correction system of integrating sphere and panorama camera - Google Patents

The chromatic aberration correction system of integrating sphere and panorama camera Download PDF

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Publication number
CN109218719A
CN109218719A CN201811319119.XA CN201811319119A CN109218719A CN 109218719 A CN109218719 A CN 109218719A CN 201811319119 A CN201811319119 A CN 201811319119A CN 109218719 A CN109218719 A CN 109218719A
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CN
China
Prior art keywords
hemispherical shell
lens
hemispherical
integrating sphere
panoramic camera
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Pending
Application number
CN201811319119.XA
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Chinese (zh)
Inventor
胡朝晖
陈志豪
吴伦
蔡卫东
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Shenzhen Go6d Science & Technology Co Ltd
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Shenzhen Go6d Science & Technology Co Ltd
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Priority to CN201811319119.XA priority Critical patent/CN109218719A/en
Publication of CN109218719A publication Critical patent/CN109218719A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00Diagnosis, testing or measuring for television systems or their details
    • H04N17/002Diagnosis, testing or measuring for television systems or their details for television cameras

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

The present invention relates to the chromatic aberration correction systems of a kind of integrating sphere and panorama camera, the integrating sphere may include the first Loadings On Hemispherical Shell and the second matching Loadings On Hemispherical Shell, first Loadings On Hemispherical Shell combines to form spherical cavity with the second Loadings On Hemispherical Shell, the engaging portion of first Loadings On Hemispherical Shell and the second Loadings On Hemispherical Shell is equipped with aperture, and it is symmetrically distributed on the first Loadings On Hemispherical Shell and the second Loadings On Hemispherical Shell, when carrying out chromatic aberration correction processing to panorama camera, panorama camera can be sent into spherical cavity by the aperture, the position of panorama camera can be adjusted in spherical cavity, the imaging center of the first camera lens and the second camera lens that make the panorama camera is overlapped with the hemisphere top of the first Loadings On Hemispherical Shell and the second Loadings On Hemispherical Shell respectively, ensure that each camera lens in spherical cavity internal imaging is uniform, and the intermediate region overwhelming majority of each lens imaging is pure color , it not will receive the interference of the engaging portion of two Loadings On Hemispherical Shells, be conducive to improve the quality for carrying out panorama camera chromatic aberration correction.

Description

Chromatic aberration correction system of integrating sphere and panoramic camera
Technical Field
The invention relates to the technical field of optical imaging, in particular to a chromatic aberration correction system of an integrating sphere and a panoramic camera.
Background
With the rapid development of image processing technology, image capturing apparatuses such as panoramic cameras are widely used in daily life and work, and in order to enable image capturing apparatuses such as panoramic cameras to have better imaging effect, color difference correction processing is generally required to be performed on the image capturing apparatuses, and an integrating sphere is a common apparatus for performing color difference correction processing on panoramic cameras.
The integrating sphere is usually a complete sphere formed by combining two hemispheres, and when the panoramic camera is subjected to chromatic aberration correction, the panoramic camera is placed in the integrating sphere, and chromatic aberration correction is performed on an image shot in the integrating sphere by the panoramic camera. However, the integrating sphere used in the conventional technology is easy to make the connecting gap between the two hemispheres fall in the middle of the image shot by one or two lenses of the panoramic camera, which causes interference to the image shot by the panoramic camera in the integrating sphere, resulting in non-uniform imaging of each lens and affecting the quality of chromatic aberration correction.
Disclosure of Invention
Based on this, it is necessary to provide an integrating sphere and a chromatic aberration correction system of a panoramic camera, aiming at the problem that the traditional technology causes interference to the image shot by the panoramic camera in the integrating sphere, which results in uneven imaging of each lens.
An integrating sphere, comprising: the device comprises a first hemispherical shell and a second hemispherical shell matched with the first hemispherical shell; the first hemispherical shell and the second hemispherical shell are combined to form a spherical cavity; wherein,
the joint of the first hemispherical shell and the second hemispherical shell is provided with an opening for feeding the panoramic camera into the spherical cavity; the openings are symmetrically distributed on the first hemispherical shell and the second hemispherical shell, so that when the imaging centers of the first lens and the second lens of the panoramic camera are respectively the hemispherical top ends of the first hemispherical shell and the second hemispherical shell, the first lens and the second lens can be used for imaging uniformly.
The integrating sphere comprises a first hemispherical shell and a second hemispherical shell matched with the first hemispherical shell, wherein the first hemispherical shell and the second hemispherical shell are combined to form a spherical cavity, the joint of the first hemispherical shell and the second hemispherical shell is provided with an opening and symmetrically distributed on the first hemispherical shell and the second hemispherical shell, when the panoramic camera is subjected to chromatic aberration correction, the panoramic camera can be fed into the spherical cavity through the opening, then the position of the panoramic camera can be adjusted in the spherical cavity, so that the imaging centers of a first lens and a second lens of the panoramic camera are respectively superposed with the hemispherical top ends of the first hemispherical shell and the second hemispherical shell, the imaging of each lens in the spherical cavity is ensured to be uniform, and most of the middle imaging area of each lens is pure-colored and cannot be interfered by the joint of the two hemispherical shells, the method is favorable for improving the quality of chromatic aberration correction of the panoramic camera.
In one embodiment, the light source is arranged inside the spherical cavity.
In one embodiment, the light source includes a first light source disposed inside the first hemispherical shell and a second light source disposed inside the second hemispherical shell.
In one embodiment, the first light source is arranged on a first position of the inner surface of the first hemispherical shell, which is close to the combining part; the second light source is arranged on a second position, close to the combining part, of the inner surface of the second hemispherical shell.
In one embodiment, the first and second positions are distributed with central symmetry about the sphere center of the spherical cavity.
In one embodiment, the number of the first light source and the second light source is one.
In one embodiment, the aperture is circular in shape.
In one embodiment, the inner surfaces of the first hemispherical shell and the second hemispherical shell are provided with a reflective medium coating.
In one embodiment, there is provided a chromatic aberration correction system for a panoramic camera, comprising a panoramic camera and an integrating sphere as described in any one of the above embodiments; wherein,
the panoramic camera is sent into the spherical cavity through the opening of the integrating sphere and is arranged at the spherical center of the spherical cavity; the panoramic camera is provided with a first lens and a second lens; the imaging centers of the first lens and the second lens are respectively superposed on the hemispherical top ends of the first hemispherical shell and the second hemispherical shell.
Above-mentioned panoramic camera's colour difference correction system, inside panoramic camera sent into spherical cavity through the trompil of integrating sphere, and locate spherical cavity's centre of sphere department, panoramic camera's first camera lens and the hemisphere top of second camera lens coincide respectively on first hemisphere casing and second hemisphere casing for first camera lens and second camera lens form images when spherical cavity is inside to shoot the image evenly, and the most part of the middle zone of two camera lens formation of image all is the pure color, can not receive the interference of the joint portion of two hemisphere casings, be favorable to improving the quality that carries out the colour difference correction to panoramic camera.
In one embodiment, the panoramic camera respectively captures images of the inner surfaces of the first hemispherical shell and the second hemispherical shell through the first lens and the second lens for chromatic aberration correction processing.
Drawings
FIG. 1 is a block diagram of an integrating sphere in one embodiment;
FIG. 2 is a schematic diagram of a first lens and a second lens capturing images in one embodiment;
fig. 3 is a schematic structural diagram of a chromatic aberration correction system of a panoramic camera in an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
In one embodiment, an integrating sphere is provided, and the structure of the integrating sphere in an open state can refer to fig. 1, fig. 1 is a structural diagram of the integrating sphere in one embodiment, and the integrating sphere can include: the first hemispherical shell 110 and the second hemispherical shell 120 matched with the first hemispherical shell 110, the parameter attributes such as the sphere size, the shape configuration and the like of the first hemispherical shell 110 can be the same as those of the second hemispherical shell 120, and the first hemispherical shell 110 and the second hemispherical shell 120 can be combined to form a spherical cavity.
The joint 130 may be formed by combining the first hemispherical shell 110 and the second hemispherical shell 120 through the first shell edge 131 of the first hemispherical shell 110 and the second shell edge 132 of the second hemispherical shell 120.
The integrating sphere is provided with an opening 140 at a position of a joint 130 of the first hemispherical shell 110 and the second hemispherical shell 120, the opening 140 is mainly used for feeding the panoramic camera into a spherical cavity formed by combining the first hemispherical shell 110 and the second hemispherical shell 120, and the openings 140 are symmetrically distributed on the first hemispherical shell 110 and the second hemispherical shell 120, that is, the opening 140 forms a first half-hole 141 on the first hemispherical shell 110 and a second half-hole 142 on the second hemispherical shell 120, and the first half-hole 141 and the second half-hole 142 are symmetrically distributed on the first hemispherical shell 110 and the second hemispherical shell 120, respectively, wherein the shape of the opening 140 may be a circle, and the opening 140 forms two semicircles with the same area on the first hemispherical shell 110 and the second hemispherical shell 120.
The first hemispherical shell 110 and the second hemispherical shell 120 respectively have a hemispherical top end, and after the panoramic camera is fed into the spherical cavity formed by combining the first hemispherical shell 110 and the second hemispherical shell 120 through the opening 140, the imaging centers of the first lens and the second lens of the panoramic camera can be respectively superposed on the hemispherical top ends of the first hemispherical shell 110 and the second hemispherical shell 120, so that the middle part of the imaging of the first lens and the second lens can be respectively the farthest part of the first hemispherical shell 110 and the second hemispherical shell 120, and each lens can be uniformly imaged, that is, most of the middle part of the imaging of each lens is pure color and cannot be interfered by the combining part 130.
Specifically, referring to fig. 2, fig. 2 is a schematic diagram of images captured by a first lens and a second lens in an embodiment, the first lens image 210 is an image captured by the first lens of the panoramic camera inside a spherical cavity, the second lens image 220 is an image captured by the second lens of the panoramic camera inside the spherical cavity, the first lens image 210 has a first imaging center 211, the second lens image 220 has a second imaging center 221, the first hemispherical shell 110 has a first hemispherical tip 151, and the second hemispherical shell 120 has a second hemispherical tip 152. The positions of the first lens and the second lens can be adjusted in the spherical cavity, such that the first imaging center 211 of the first lens image 210 coincides with the first hemispherical tip 151 of the first hemispherical shell 110, the second imaging center 221 of the second lens image 220 coincides with the second imaging center 221 of the second hemispherical shell 120, such that the middle areas of the first lens image 210 and the second lens image 220 are the farthest positions of the first hemispherical shell 110 and the second hemispherical shell 120, respectively, the first dotted line 212 in the first lens image 210 and the second dotted line 222 in the second lens image 220 correspond to the first shell edge 131 of the first hemispherical shell 110 and the second shell edge 132 of the second hemispherical shell 120, respectively, such that the middle areas of the first lens image 210 and the second lens image 220 are mostly pure color and are not affected by the joint formed by the shell edges of the two hemispherical shells, the method is favorable for improving the quality of chromatic aberration correction of the panoramic camera.
In the above embodiment, the integrating sphere includes a first hemispherical shell and a second hemispherical shell matching with the first hemispherical shell, the first hemispherical shell and the second hemispherical shell are combined to form a spherical cavity, the combining portion of the first hemispherical shell and the second hemispherical shell is provided with an opening, and the opening is symmetrically distributed on the first hemispherical shell and the second hemispherical shell, when the panoramic camera is subjected to chromatic aberration correction processing, the panoramic camera can be fed into the spherical cavity through the opening, and then the position of the panoramic camera can be adjusted in the spherical cavity, so that the imaging centers of the first lens and the second lens of the panoramic camera are respectively overlapped with the hemispherical top ends of the first hemispherical shell and the second hemispherical shell, thereby ensuring that the imaging of each lens in the spherical cavity is uniform, and most of the middle area of the imaging of each lens is pure color, and is not interfered by the combining portion of the two hemispherical shells, the method is favorable for improving the quality of chromatic aberration correction of the panoramic camera.
In one embodiment, a light source disposed inside the spherical cavity may also be included.
This embodiment sets up the light source mainly in the inside of the spherical cavity of integrating sphere, and this light source can be used for when the panoramic camera carries out image shooting in the inside of integrating sphere, provides sufficient light, improves the imaging quality.
In one embodiment, the light source may further include a first light source disposed inside the first hemispherical shell, and a second light source disposed inside the second hemispherical shell.
The embodiment mainly includes that light sources are respectively arranged inside the shell of the first hemispherical shell 110 and inside the shell of the second hemispherical shell 120, a first light source is arranged inside the shell of the first hemispherical shell 110, and a second light source is arranged inside the shell of the first hemispherical shell 110, so that the interiors of the first hemispherical shell 110 and the second hemispherical shell 120 can be fully illuminated, the image shooting quality of the panoramic camera is improved, and the first light source and the second light source can also adopt light sources with the same specification, so that the illumination conditions inside the first hemispherical shell 110 and the second hemispherical shell 120 are ensured to be the same as much as possible, so that the illumination difference of images shot by the first lens and the second lens of the panoramic camera can be reduced, and the adverse effect of the images shot by the two lenses under different illumination conditions on chromatic aberration correction is avoided.
In one embodiment, further, the first light source is arranged on a first position of the inner surface of the first hemispherical shell, which is close to the combining part; the second light source is arranged on a second position, close to the combining part, of the inner surface of the second hemispherical shell.
In this embodiment, referring to fig. 1, the first light source may be disposed on a first position 161 of the inner surface of the first hemispherical shell 110 near the joint portion 130, and the second light source may be disposed on a second position 162 of the inner surface of the second hemispherical shell 120 near the joint portion 130. The first light source and the second light source are arranged at the positions close to the joint part 130, so that the two light sources respectively illuminate the corresponding hemispherical shells more uniformly, and the imaging quality of the panoramic camera in the integrating sphere is further improved.
Further, the first positions 161 and the second positions 162 may be symmetrically distributed about the center of the spherical cavity, for example, the first positions 161 may be disposed on the lower side of the first hemispherical shell 110, and the first positions 162 may be disposed on the upper side of the second hemispherical shell 120, or vice versa. This enables the first light source disposed at the first position 161 to illuminate the entire spherical cavity as uniformly as possible, and also enables the second light source disposed at the second position 162 to illuminate the entire spherical cavity as uniformly as possible.
In one embodiment, to simplify the arrangement of the light sources, one light source may be arranged inside the first hemispherical housing 110 and the second hemispherical housing 120, respectively, i.e. the number of the first light source and the second light source is one. The light source inside the integrating sphere can be as uniform as possible, if a plurality of light sources are arranged inside the two hemispherical shells, whether the plurality of light sources can fully and uniformly irradiate the inside of the spherical cavity is considered, the plurality of light sources can occupy a large space inside the spherical cavity so that the panoramic camera can easily shoot the light source in the image, the imaging quality is influenced, the subsequent chromatic aberration correction processing is not facilitated, the position of the light source is easily adjusted by respectively arranging one light source inside the two hemispherical shells, and the image can be prevented from being shot by the panoramic camera under the condition that the illumination is fully and uniformly ensured.
In one embodiment, the inner surfaces of the first hemispherical shell and the second hemispherical shell are provided with a reflective medium coating.
In this embodiment, the reflective medium coatings may be coated on the inner surfaces of the first hemispherical shell 110 and the second hemispherical shell 120, so that light emitted from the light source is continuously diffused by the reflective medium coatings, and the effect of uniform light on the whole inside of the integrating sphere is achieved, so that the integrating sphere becomes a uniform light source, which is beneficial for a panoramic camera to shoot an image under the condition of uniform illumination to perform chromatic aberration correction processing.
In an embodiment, a chromatic aberration correction system of a panoramic camera is provided, and referring to fig. 3, fig. 3 is a schematic structural diagram of a chromatic aberration correction system of a panoramic camera in an embodiment, which may include a panoramic camera 300 and an integrating sphere as described in any one of the above embodiments; wherein,
the panoramic camera 300 can be fed into the spherical cavity of the integrating sphere through the opening 140 of the integrating sphere and is arranged at the center of the spherical cavity; wherein, the opening 140 is provided at the position of the combining portion 130 of the integrating sphere.
The panoramic camera 300 is provided with a first lens 310 and a second lens 320; the imaging centers of the first lens 310 and the second lens 320 are respectively overlapped with the hemispherical top ends of the first hemispherical shell 110 and the second hemispherical shell 120, that is, the imaging center of the first lens 310 is overlapped with the first hemispherical top end 151 of the first hemispherical shell 110, and the imaging center of the second lens 320 is overlapped with the second hemispherical top end 152 of the second hemispherical shell 120.
The panoramic camera 300 may be configured to capture images of the inner surfaces of the first hemispherical housing 110 and the second hemispherical housing 1210 through the first lens 310 and the second lens 320, respectively, and the images may be used for the panoramic camera to perform chromatic aberration correction processing. Most of the middle area of the images shot by the first lens 310 and the second lens 320 is pure color, and is not affected by the joint formed by the edges of the two hemispherical shells to the imaging, which is beneficial to improving the quality of chromatic aberration correction of the panoramic camera.
Above-mentioned panoramic camera's colour difference correction system, inside panoramic camera sent into spherical cavity through the trompil of integrating sphere, and locate spherical cavity's centre of sphere department, panoramic camera's first camera lens and the hemisphere top of second camera lens coincide respectively on first hemisphere casing and second hemisphere casing for first camera lens and second camera lens form images when spherical cavity is inside to shoot the image evenly, and the most part of the middle zone of two camera lens formation of image all is the pure color, can not receive the interference of the joint portion of two hemisphere casings, be favorable to improving the quality that carries out the colour difference correction to panoramic camera.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An integrating sphere, comprising: the device comprises a first hemispherical shell and a second hemispherical shell matched with the first hemispherical shell; the first hemispherical shell and the second hemispherical shell are combined to form a spherical cavity; wherein,
the joint of the first hemispherical shell and the second hemispherical shell is provided with an opening for feeding the panoramic camera into the spherical cavity; the openings are symmetrically distributed on the first hemispherical shell and the second hemispherical shell, so that when the imaging centers of the first lens and the second lens of the panoramic camera are respectively superposed on the hemispherical top ends of the first hemispherical shell and the second hemispherical shell, the first lens and the second lens can be used for imaging uniformly.
2. The integrating sphere of claim 1, further comprising a light source disposed inside the spherical cavity.
3. The integrating sphere of claim 2, wherein the light source comprises a first light source disposed inside the first hemispherical shell and a second light source disposed inside the second hemispherical shell.
4. The integrating sphere of claim 3, wherein the first light source is disposed on the first hemispherical shell inner surface at a first location proximate to the junction; the second light source is arranged on a second position, close to the combining part, of the inner surface of the second hemispherical shell.
5. The integrating sphere of claim 4, wherein the first and second positions are centrosymmetrically distributed about a center of the spherical cavity.
6. The integrating sphere of claim 3, wherein the number of first and second light sources is one.
7. The integrating sphere of claim 1, wherein the aperture is circular in shape.
8. The integrating sphere of any one of claims 1 to 7, wherein the inner surfaces of the first and second hemispherical shells are provided with a reflective medium coating.
9. A chromatic aberration correction system of a panoramic camera, comprising a panoramic camera and an integrating sphere of any one of claims 1 to 8; wherein,
the panoramic camera is sent into the spherical cavity through the opening of the integrating sphere and is arranged at the spherical center of the spherical cavity; the panoramic camera is provided with a first lens and a second lens; the imaging centers of the first lens and the second lens are respectively superposed on the hemispherical top ends of the first hemispherical shell and the second hemispherical shell.
10. The chromatic aberration correction system of a panoramic camera according to claim 9, wherein the panoramic camera takes images of the inner surfaces of the first and second hemispherical shells through the first and second lenses, respectively, for chromatic aberration correction processing.
CN201811319119.XA 2018-11-07 2018-11-07 The chromatic aberration correction system of integrating sphere and panorama camera Pending CN109218719A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006030597A1 (en) * 2004-09-17 2006-03-23 Japan Science And Technology Agency Object digitizing device using integrating sphere wave source
WO2013082512A1 (en) * 2011-11-30 2013-06-06 Labsphere, Inc. Apparatus and method for mobile device camera testing
CN105181135A (en) * 2015-09-28 2015-12-23 浙江理工大学 Illumination system applied to textile hyperspectral image acquisition and digital color measurement and using method
WO2017080441A1 (en) * 2015-11-09 2017-05-18 宁波舜宇光电信息有限公司 Method for finding optical centre of lens, device for selecting shadow computation region for lens and testing surround view video-shooting module, method for testing white balance of surround view video-shooting module, and wide-angle integrating sphere
CN108307098A (en) * 2018-03-09 2018-07-20 上海小蚁科技有限公司 Fisheye camera shadow correction parameter determination method, bearing calibration and device, storage medium, fisheye camera
US10057487B1 (en) * 2016-03-25 2018-08-21 Scott Zhihao Chen Panoramic imaging systems based on normal-lens cameras
CN208971698U (en) * 2018-11-07 2019-06-11 深圳六滴科技有限公司 The chromatic aberration correction system of integrating sphere and panorama camera

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006030597A1 (en) * 2004-09-17 2006-03-23 Japan Science And Technology Agency Object digitizing device using integrating sphere wave source
WO2013082512A1 (en) * 2011-11-30 2013-06-06 Labsphere, Inc. Apparatus and method for mobile device camera testing
CN105181135A (en) * 2015-09-28 2015-12-23 浙江理工大学 Illumination system applied to textile hyperspectral image acquisition and digital color measurement and using method
WO2017080441A1 (en) * 2015-11-09 2017-05-18 宁波舜宇光电信息有限公司 Method for finding optical centre of lens, device for selecting shadow computation region for lens and testing surround view video-shooting module, method for testing white balance of surround view video-shooting module, and wide-angle integrating sphere
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CN108307098A (en) * 2018-03-09 2018-07-20 上海小蚁科技有限公司 Fisheye camera shadow correction parameter determination method, bearing calibration and device, storage medium, fisheye camera
CN208971698U (en) * 2018-11-07 2019-06-11 深圳六滴科技有限公司 The chromatic aberration correction system of integrating sphere and panorama camera

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