WO2011066737A1 - Correction method and corrector for mega-pixel monitoring camera - Google Patents
Correction method and corrector for mega-pixel monitoring camera Download PDFInfo
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- WO2011066737A1 WO2011066737A1 PCT/CN2010/073375 CN2010073375W WO2011066737A1 WO 2011066737 A1 WO2011066737 A1 WO 2011066737A1 CN 2010073375 W CN2010073375 W CN 2010073375W WO 2011066737 A1 WO2011066737 A1 WO 2011066737A1
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- optical dome
- corrector
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
Definitions
- the invention belongs to a mounting adjustment scheme of a megapixel or more dome camera in a monitoring system, in particular, a hemispherical camera-specific correction method and a corrector without an autofocus system.
- the optical dome 8 not only protects the camera, but also ensures that the image of the camera 7 is clear. Since the camera does not have an autofocus system, the camera ⁇ is usually fixed to the camera mount 3 during installation. After the camera is tuned, the optical dome is installed. However, the dome cover will cause the image plane of the debugged camera to drift, and the image will be blurred. After the closed dome cover is installed, the camera can no longer be adjusted. Usually, the optical dome cover is removed, so that the debugger can adjust the work experience. It takes several times to achieve better results. This makes the installation process complicated and the debugging time long. Summary of the invention
- the object of the present invention is to overcome the shortcomings of image adjustment during installation of a megapixel camera or more, and to provide a method for correcting a dome camera without an autofocus system and a corrector for implementing the same. .
- the invention is a method for correcting a megapixel surveillance camera, the main point of which is to intercept a part of the spherical surface from the same optical dome as the optical dome to be mounted on the outside of the camera, the area of which is larger than the maximum angle of view of the camera.
- the optical dome is placed in front of the camera at the same distance as the camera lens, simulates the effect of the optical dome on the camera, adjusts the camera, adjusts the image of the lens to clarity, removes the calibration bracket, and attaches the dome. Get the ideal image.
- the invention grasps the fundamentals of the defects of the prior art: the closed dome cover causes the camera to lose the adjustment space.
- the effect of imaging on a certain point of the camera is only the part of the optical dome in front of the camera lens, that is to say only the optical dome.
- the optical dome is simulated using the same corrective lens as the optical dome, leaving room for adjusting the focal length of the camera, making it easier and faster to adjust the focus.
- a megapixel surveillance camera corrector for implementing the above method, comprising a correcting lens, a bracket, the correcting lens being a partial spherical surface taken from the same optical dome as the optical dome to be mounted outside the camera, The area is larger than the visible range of the camera's maximum field of view, and the correcting lens is mounted on the bracket.
- the bracket is mounted on the camera mount, the distance between the correcting lens and the camera lens and the distance between the optical dome and the camera lens are ensured.
- the lower end of the bracket has two or more legs, and the upper end plane has a slot for mounting the correcting lens.
- the fixing leg of the bracket and the camera fixing bracket are fixed by bolts, or the camera fixing bracket has a card slot, and the fixing leg of the bracket is buckled on the card slot.
- the invention designs a corrector for simulating the influence of the optical dome on the camera, and uses the same optical dome to make the correcting lens locally, correcting the distance between the lens and the camera lens and the distance between the optical dome and the camera lens, and the bracket has two And more than two fixed legs, the rest is an open space, which is mounted on the camera mount by the legs, that is, the effect of the correcting lens on the camera is the same as the effect of the optical dome to be mounted on the camera, which provides guarantee for accurate correction.
- the invention has the advantages that: by adjusting the lens to simulate the effect of the optical dome on the camera, creating a adjustment space for the camera is a convenient, reasonable and practical correction scheme. Based on this principle, a simple and efficient corrector is designed to reduce the labor intensity of the installer and improve the efficiency, and finally solve the defect of image drift caused by the dome installation of the camera above megapixel, and obtain the best image.
- Figure 1 is a schematic view showing the state of use of the existing camera
- FIG. 2 is a schematic view showing the installation state of the calibration bracket and the camera according to the present invention.
- FIG. 3 is a schematic structural view of a stent embodiment 1;
- FIG. 4 is a schematic structural view of a stent embodiment 2;
- FIG. 5 is a schematic structural view of a camera mount cooperated with the bracket embodiment 2;
- a method for correcting a megapixel surveillance camera which intercepts a partial spherical surface from the same optical dome as the optical dome that is to be mounted on the outside of the camera, the area of which is larger than the visible range of the maximum field of view of the camera. Place the optical dome at the same distance as the camera lens in front of the camera, simulate the effect of the optical dome on the camera, adjust the camera, adjust the image of the lens to clarity, remove the calibration bracket, and attach the dome to obtain the ideal image.
- a megapixel surveillance camera corrector includes a correcting lens 1 and a bracket 2, the correcting lens 1 being the same optical dome from the optical dome to be mounted on the outside of the camera.
- the upper part of the spherical surface is larger than the maximum viewing angle of the camera.
- the lower end of the bracket has two or more fixed legs, the other part is an open space, and the upper end plane has a slot for fixing the correcting lens.
- Mounted on the upper end plane of the bracket 2 when the height of the bracket 2 is mounted on the camera mount, the distance between the correcting lens 1 and the camera lens is the same as the distance between the optical dome and the camera lens, and the fixing leg 5 of the bracket 2 passes the bolt It is fixed to the camera mount 3.
- the corrector installation method is not fixed. There are a variety of installation options to choose from, which are roughly divided into screw lock installation and snap installation.
- a mounting bracket has been added to the camera.
- the mounting bracket is provided with a screw-fixed hole or a snap-fitted slot, which can correspond to the mounting hole of the bracket on the corrector or the mounting buckle.
- the bracket 2 has four fixing legs 5, the upper end surface has a slot 6 for mounting the correcting lens 1, the camera fixing frame 3 has a card slot 4, and the fixing leg 5 of the bracket 2 is stuck. Fastened to the card slot 4.
- the principle of the present invention is that the optical curvature of any of the optical domes used by the camera is uniform and the refractive index is uniform.
- the distance is the same as the distance from the installed dome to the center of the camera. Adjust the image of the lens to clear, then remove the calibration bracket and attach the dome to obtain the ideal image.
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Abstract
The present invention belongs to an installation and adjustment solution for dome cameras having more than one million pixels in a monitoring system, especially to the dedicated correction method and corrector for dome cameras without an auto-focus system. The present invention is a correction method for mega-pixel monitoring cameras, which is characterized in that: a partial spherical surface is cut, the area of which is larger than the visual range of the largest field angle of a camera, on a optical dome cover that is the same as the optical dome cover to be installed on the outer part of the camera; the partial spherical surface combines with a bracket to form a correction bracket, so that the partial spherical surface is disposed in front of the camera in the same distance between the optical dome cover and a lens of the camera, and is used for simulating the influence of the optical dome cover on the camera, and then the camera is adjusted; when the image obtained from the lens is in focus by adjustment, the correction bracket is removed, the optical dome cover is installed, and then an ideal image can be obtained. The advantage of the present invention is that an adjustment space is created for the camera by a correction lens simulating the influence of the optical dome cover on the camera. A convenient, rational and achievable correction solution is provided in the present invention. A simple corrector is designed according to the correction solution, and adjustment efficiency is improved.
Description
百万像素监控摄像机的校正方法和校正器 技术领域 Calibration method and corrector for megapixel surveillance cameras
本发明属于监控系统中的百万像素以上半球型摄像机的安装调整方案，尤其 是没有自动对焦系统的半球型摄像机专用校正方法及校正器。 The invention belongs to a mounting adjustment scheme of a megapixel or more dome camera in a monitoring system, in particular, a hemispherical camera-specific correction method and a corrector without an autofocus system.
背景技术 Background technique
如图 1所示，对于百万像素以上摄像机来说， 光学球罩 8不仅要起到保护摄 像机的作用， 还应保证摄像机 7的图像清晰。 由于摄像机没有自动对焦系统， 安 装时通常是将摄像机 Ί固定在摄像机固定架 3上，先调试摄像机后再安装光学球 罩。 但是， 球罩会造成调试好的摄像机成像面漂移， 图像模糊， 而密闭的球罩安 装后又无法再对摄像机进行调整，通常是要卸下光学球罩， 让调试员凭工作经验 进行调整，要反复多次才能达到较好的效果。这使得安装过程复杂，调试时间长。 发明内容 As shown in Fig. 1, for a camera of more than megapixel, the optical dome 8 not only protects the camera, but also ensures that the image of the camera 7 is clear. Since the camera does not have an autofocus system, the camera Ί is usually fixed to the camera mount 3 during installation. After the camera is tuned, the optical dome is installed. However, the dome cover will cause the image plane of the debugged camera to drift, and the image will be blurred. After the closed dome cover is installed, the camera can no longer be adjusted. Usually, the optical dome cover is removed, so that the debugger can adjust the work experience. It takes several times to achieve better results. This makes the installation process complicated and the debugging time long. Summary of the invention
本发明的目的在于克服现有百万像素以上半球型摄像机安装时图像调整存 在的缺点，提供一种可对没有自动对焦系统的半球型摄像机进行快速调节的校正 方法及实现这一方法的校正器。 The object of the present invention is to overcome the shortcomings of image adjustment during installation of a megapixel camera or more, and to provide a method for correcting a dome camera without an autofocus system and a corrector for implementing the same. .
本发明为一种百万像素监控摄像机的校正方法，其要点在于， 从与将要安装 在摄像机外部的光学球罩相同的光学球罩上截取部分球面，其面积大于摄像机最 大视场角的可视范围， 以光学球罩与摄像机镜头相同的距离置于摄像机之前， 模 拟光学球罩对摄像机的影响， 对摄像机进行调节， 调整镜头的图像至清晰， 再取 掉校正支架， 安上球罩， 可获得理想图像。 The invention is a method for correcting a megapixel surveillance camera, the main point of which is to intercept a part of the spherical surface from the same optical dome as the optical dome to be mounted on the outside of the camera, the area of which is larger than the maximum angle of view of the camera. Range, the optical dome is placed in front of the camera at the same distance as the camera lens, simulates the effect of the optical dome on the camera, adjusts the camera, adjusts the image of the lens to clarity, removes the calibration bracket, and attaches the dome. Get the ideal image.
本发明抓住现有技术缺陷之根本： 封闭的球罩使得摄像机丧失了调节空间， 其实对某点摄像机成像的影响， 只是摄像机镜头前的那部分光学球罩， 也就是说 只是光学球罩的局部，利用与光学球罩相同的校正镜片来模拟光学球罩， 为调节 摄像机的焦距留出空间， 使调节焦距变得轻松快捷。 The invention grasps the fundamentals of the defects of the prior art: the closed dome cover causes the camera to lose the adjustment space. In fact, the effect of imaging on a certain point of the camera is only the part of the optical dome in front of the camera lens, that is to say only the optical dome. Locally, the optical dome is simulated using the same corrective lens as the optical dome, leaving room for adjusting the focal length of the camera, making it easier and faster to adjust the focus.
实现上述方法的一种百万像素监控摄像机的校正器，它包括校正镜片、支架， 所述的校正镜片是从与将要安装在摄像机外部的光学球罩相同的光学球罩截取 的部分球面，其面积大于摄像机最大视场角的可视范围，校正镜片安装于支架上，
所述的支架安装于摄像机固定架上时，保证校正镜片与摄像机镜头的距离和光学 球罩与摄像机镜头的距离相同。 A megapixel surveillance camera corrector for implementing the above method, comprising a correcting lens, a bracket, the correcting lens being a partial spherical surface taken from the same optical dome as the optical dome to be mounted outside the camera, The area is larger than the visible range of the camera's maximum field of view, and the correcting lens is mounted on the bracket. When the bracket is mounted on the camera mount, the distance between the correcting lens and the camera lens and the distance between the optical dome and the camera lens are ensured.
所述的支架下端有两个及两个以上的支脚， 上端平面有安装校正镜片的槽。 支架的固定支脚与摄像机固定架通过螺栓固定，或所述的摄像机固定架上有 卡槽， 支架的固定支脚卡扣于卡槽上。 The lower end of the bracket has two or more legs, and the upper end plane has a slot for mounting the correcting lens. The fixing leg of the bracket and the camera fixing bracket are fixed by bolts, or the camera fixing bracket has a card slot, and the fixing leg of the bracket is buckled on the card slot.
本发明本着模拟光学球罩对摄像机的影响进行设计校正器，使用相同光学球 罩的局部制作校正镜片，校正镜片与摄像机镜头的距离和光学球罩与摄像机镜头 的距离相同， 支架有两个及两个以上的固定支脚， 其余部分为开放的空间， 靠支 脚安装在摄像机固定架上，即校正镜片对摄像机的影响与将要装的光学球罩对摄 像机的影响相同， 为准确校正提供保证。 The invention designs a corrector for simulating the influence of the optical dome on the camera, and uses the same optical dome to make the correcting lens locally, correcting the distance between the lens and the camera lens and the distance between the optical dome and the camera lens, and the bracket has two And more than two fixed legs, the rest is an open space, which is mounted on the camera mount by the legs, that is, the effect of the correcting lens on the camera is the same as the effect of the optical dome to be mounted on the camera, which provides guarantee for accurate correction.
本发明的优点在于： 通过校正镜片模拟光学球罩对摄像机的影响进行调节， 为摄像机创造出一个调节空间， 是一种方便的、 合理、 切实可行的校正方案。 并 依此原理设计出简单、 高效的校正器， 减轻安装人员的劳动强度， 提高效率， 最 终解决了百万像素以上摄像机因球罩安装产生的图像漂移的缺陷， 得到最佳图 像。 The invention has the advantages that: by adjusting the lens to simulate the effect of the optical dome on the camera, creating a adjustment space for the camera is a convenient, reasonable and practical correction scheme. Based on this principle, a simple and efficient corrector is designed to reduce the labor intensity of the installer and improve the efficiency, and finally solve the defect of image drift caused by the dome installation of the camera above megapixel, and obtain the best image.
附图说明 DRAWINGS
图 1为现有摄像机使用状态示意图； Figure 1 is a schematic view showing the state of use of the existing camera;
图 2 为本发明校正支架与摄像机安装状态示意图； 2 is a schematic view showing the installation state of the calibration bracket and the camera according to the present invention;
图 3为支架实施例 1结构示意图； 3 is a schematic structural view of a stent embodiment 1;
图 4为支架实施例 2结构示意图； 4 is a schematic structural view of a stent embodiment 2;
图 5为与支架实施例 2相配合的摄像机固定架结构示意图； FIG. 5 is a schematic structural view of a camera mount cooperated with the bracket embodiment 2; FIG.
其中： 1校正镜片， 2支架， 3摄像机固定架， 4卡槽， 5固定支脚， Among them: 1 correction lens, 2 brackets, 3 camera mounts, 4 card slots, 5 fixed feet,
6槽 ， 7摄像机 ， 8光学球罩。 6 slots, 7 cameras, 8 optical domes.
具体实施方式 detailed description
下面的实施例可以使本专业的技术人员更理解本发明，对下述的实施例进行 修改， 添加和替换都是可能的， 都没有超出本发明的保护范围。 The following embodiments are provided to enable those skilled in the art to understand the present invention. It is possible to modify, add and replace the following embodiments without departing from the scope of the present invention.
一种百万像素监控摄像机的校正方法，从与将要安装在摄像机外部的光学球 罩相同的光学球罩上截取部分球面， 其面积大于摄像机最大视场角的可视范围，
以光学球罩与摄像机镜头相同的距离置于摄像机之前，模拟光学球罩对摄像机的 影响，对摄像机进行调节，调整镜头的图像至清晰，再取掉校正支架，安上球罩， 可获得理想图像。 A method for correcting a megapixel surveillance camera, which intercepts a partial spherical surface from the same optical dome as the optical dome that is to be mounted on the outside of the camera, the area of which is larger than the visible range of the maximum field of view of the camera. Place the optical dome at the same distance as the camera lens in front of the camera, simulate the effect of the optical dome on the camera, adjust the camera, adjust the image of the lens to clarity, remove the calibration bracket, and attach the dome to obtain the ideal image.
如图 2、 3所示， 一种百万像素监控摄像机的校正器， 它包括校正镜片 1、 支架 2， 所述的校正镜片 1是从将要安装在摄像机外部的光学球罩相同的光学球 罩上截取部分球面，其面积大于摄像机最大视场角的可视范围， 支架下端有两个 及两个以上的固定支脚，其余部分为开放的空间，上端平面有固定校正镜片的槽， 校正镜片 1安装于支架 2的上端平面上，支架 2的高度为其安装于摄像机固定架 上时，校正镜片 1与摄像机镜头的距离和光学球罩与摄像机镜头的距离相同， 支 架 2的固定支脚 5通过螺栓固定在摄像机固定架 3上。 As shown in Figures 2 and 3, a megapixel surveillance camera corrector includes a correcting lens 1 and a bracket 2, the correcting lens 1 being the same optical dome from the optical dome to be mounted on the outside of the camera. The upper part of the spherical surface is larger than the maximum viewing angle of the camera. The lower end of the bracket has two or more fixed legs, the other part is an open space, and the upper end plane has a slot for fixing the correcting lens. Mounted on the upper end plane of the bracket 2, when the height of the bracket 2 is mounted on the camera mount, the distance between the correcting lens 1 and the camera lens is the same as the distance between the optical dome and the camera lens, and the fixing leg 5 of the bracket 2 passes the bolt It is fixed to the camera mount 3.
校正器的安装方式并不是固定的，有多种的安装方案可以选择， 大体分为螺 丝锁附安装及卡扣安装。在摄像机上增加了安装架， 安装架上设计有螺丝固定的 孔或卡扣固定的槽， 可对应校正器上支架的安装孔或安装卡扣。 The corrector installation method is not fixed. There are a variety of installation options to choose from, which are roughly divided into screw lock installation and snap installation. A mounting bracket has been added to the camera. The mounting bracket is provided with a screw-fixed hole or a snap-fitted slot, which can correspond to the mounting hole of the bracket on the corrector or the mounting buckle.
实施例 2， 如图 4、 图 5所示， 支架 2有四个固定支脚 5， 上端面有安装校 正镜片 1的槽 6， 摄像机固定架 3上有卡槽 4， 支架 2的固定支脚 5卡扣于卡槽 4上。 Embodiment 2, as shown in FIG. 4 and FIG. 5, the bracket 2 has four fixing legs 5, the upper end surface has a slot 6 for mounting the correcting lens 1, the camera fixing frame 3 has a card slot 4, and the fixing leg 5 of the bracket 2 is stuck. Fastened to the card slot 4.
本发明的原理在于： 摄像机使用的光学球罩任何一处的光学曲率一致， 折射 率一致。 以此曲率和折射率制作外径尺寸小的校正镜片（该外径大小以正好覆盖 摄像机视场为准）， 与支架组合成校正支架， 将其安装在镜头前， 支架保证镜片 离摄像机回转中心的距离和所安装球罩面至摄像机回转中心距离相同，调整镜头 的图像至清晰， 再取掉校正支架， 安上球罩， 可获得理想图像。
The principle of the present invention is that the optical curvature of any of the optical domes used by the camera is uniform and the refractive index is uniform. Using the curvature and refractive index to make a correcting lens with a small outer diameter (the outer diameter is just to cover the field of view of the camera), and the bracket is combined with a bracket to mount the correcting bracket, which is mounted in front of the lens, and the bracket ensures that the lens is away from the center of the camera. The distance is the same as the distance from the installed dome to the center of the camera. Adjust the image of the lens to clear, then remove the calibration bracket and attach the dome to obtain the ideal image.
Claims
1. 一种百万像素监控摄像机的校正方法， 其特征在于， 从与将要安装在摄 像机外部的光学球罩相同的光学球罩上截取部分球面， 其面积大于摄像 机最大视场角的可视范围， 以光学球罩与摄像机镜头相同的距离置于摄 像机之前， 模拟光学球罩对摄像机的影响， 对摄像机进行调节， 调整镜 头的图像至清晰， 再取掉校正支架， 安上球罩， 可获得理想图像。A method for correcting a megapixel surveillance camera, characterized in that a partial spherical surface is taken from an optical dome similar to an optical dome that is to be mounted outside the camera, the area of which is larger than the visible range of the maximum field of view of the camera Place the optical dome cover in front of the camera at the same distance as the camera lens, simulate the effect of the optical dome on the camera, adjust the camera, adjust the image of the lens to clear, remove the calibration bracket, and attach the dome cover. Ideal image.
2. 一种百万像素监控摄像机的校正器，其特征在于，它包括校正镜片（1)、 支架 （2)， 所述的校正镜片 （1) 是从与将要安装在摄像机外部的光学 球罩相同的光学球罩截取的部分球面， 其面积大于摄像机最大视场角的 可视范围， 校正镜片 （1) 安装于支架 （2) 上， 所述的支架 （2) 安装 于摄像机固定架 （3) 上时， 保证校正镜片 （1) 与摄像机镜头的距离和 光学球罩与摄像机镜头的距离相同。 2. A megapixel surveillance camera corrector, characterized in that it comprises a correcting lens (1), a bracket (2), and the correcting lens (1) is from an optical dome that is to be mounted outside the camera The spherical surface of the same optical dome is larger than the maximum viewing angle of the camera. The correcting lens (1) is mounted on the bracket (2), and the bracket (2) is mounted on the camera mount (3). ) When it is up, ensure that the distance between the correcting lens (1) and the camera lens is the same as the distance between the optical dome and the camera lens.
3. 根据权利要求 2所述的一种百万像素监控摄像机的校正器，其特征在于， 所述的支架 （2) 下端有两个及两个以上的固定支脚 （5)， 其余部分为 开放的空间， 上端平面有安装校正镜片 （1) 的槽 （6)。 3. The calibrator for a megapixel surveillance camera according to claim 2, wherein the lower end of the bracket (2) has two or more fixed legs (5), and the rest is open. Space, the upper end plane has a slot (6) for mounting the correcting lens (1).
4. 根据权利要求 2所述的一种百万像素监控摄像机的校正器，其特征在于， 所述的摄像机固定架 （3) 上有支架 （2) 的固定处。 4. A megapixel surveillance camera corrector according to claim 2, wherein the camera mount (3) has a fixing portion of the bracket (2).
5. 根据权利要求 2所述的一种百万像素监控摄像机的校正器，其特征在于， 支架 （2) 的固定支脚 （5) 与摄像机固定架 （3) 通过螺栓固定。 5. A megapixel surveillance camera corrector according to claim 2, wherein the fixed leg (5) of the bracket (2) and the camera mount (3) are fixed by bolts.
6. 根据权利要求 2所述的一种百万像素监控摄像机的校正器，其特征在于， 所述的摄像机固定架 （3) 上有卡槽 （4)， 支架 （2) 的固定支脚 （5) 卡扣于卡槽 （4) 上。 The corrector for a megapixel surveillance camera according to claim 2, wherein the camera holder (3) has a card slot (4) and a fixed leg of the bracket (2) (5) ) snaps onto the card slot (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101129131A CN101710942B (en) | 2009-12-03 | 2009-12-03 | Correction method of megapixel monitoring camera |
| CN200910112913.1 | 2009-12-03 |
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| WO2011066737A1 true WO2011066737A1 (en) | 2011-06-09 |
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| US9122049B2 (en) * | 2010-12-30 | 2015-09-01 | Pelco, Inc. | Optical compensation in surveillance domes |
| JP6468744B2 (en) * | 2014-07-23 | 2019-02-13 | キヤノン株式会社 | Imaging apparatus, image processing apparatus, image processing method of imaging apparatus, and program |
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| CN101710942A (en) | 2010-05-19 |
| CN101710942B (en) | 2011-11-23 |
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