公开(公告)号：US20140320686A1

公开(公告)日：2014-10-30

申请号：US14260860

申请日：2014-04-24

Applicant: Axis AB

Inventor： Jonas HJELMSTROM ,  Anders Johannesson

IPC: H04N5/235

CPC classification number: H04N5/2355 ,  H04N5/2351 ,  H04N5/2356 ,  H04N5/238

Abstract: The present invention relates to a method (300) for reducing stray light in an output image of a scene, said method comprising; providing (301) a camera (100) comprising a lens assembly (102, 202), providing (302) an aperture unit (103, 203) having an aperture gate (204a, 204b) in an aperture plane being orthogonal to an optical axis (OA) of said lens assembly (102, 202), said aperture gate (204a, 204b) being adjustable in said aperture plane, acquiring (303), by means of said camera (100), a plurality of images of said scene, wherein each image of said plurality of images is acquired using an unique aperture gate setting, wherein each of said unique aperture gate settings correspond to a unique combination of a position and a shape of said aperture gate (204a, 204b) in said aperture plane, analyzing (305) said plurality of images for generating data pertaining to a difference in stray light content with respect to said plurality of images, and producing (306) said output image based on said data pertaining to said difference in stray light content.

Abstract translation: 本发明涉及一种用于减少场景的输出图像中的杂散光的方法（300），所述方法包括： 提供（301）包括透镜组件（102,202）的相机（100），提供（302）孔径单元（103,203），孔径单元（103,203）在孔平面中具有与光轴正交的孔径门（204a，204b） （102,202）的所述多个图像（OA），所述孔径门（204a，204b）可在所述孔径平面中调节，通过所述照相机（100）获取（303）所述场景的多个图像， 其中所述多个图像的每个图像是使用唯一孔径门设置来获得的，其中所述唯一孔径门设置中的每一个对应于所述孔径平面中所述孔径门（204a，204b）的位置和形状的唯一组合， 分析（305）所述多个图像，用于产生关于所述多个图像的杂散光含量差异的数据，并且基于与所述杂散光含量的差异有关的所述数据产生（306）所述输出图像。

公开(公告)号：US20140002713A1

公开(公告)日：2014-01-02

申请号：US13846152

申请日：2013-03-18

Applicant: AXIS AB

Inventor： Jonas HJELMSTROM

IPC: H04N5/225

CPC classification number: H04N5/2251 ,  H04N5/2253 ,  H04N5/2254 ,  Y02D70/00

Abstract: The present invention relates to a focusing device comprising: a lens, a lens plate, an image sensor, an image sensor plate, at least two rotatable structures, and at least two strips, wherein the lens is connected to the lens plate, the image sensor is connected to the image sensor plate, wherein each strip is arranged to be wound onto one of the rotatable structures, respectively, the rotatable structures and the strips are arranged between the lens plate and the image sensor plate, the rotatable structures and/or the strips are arranged in contact with the lens plate and the image sensor plate, and wherein a distance between the lens and the image sensor is adjusted by winding the strips onto or off the rotatable structures.

Abstract translation: 本发明涉及一种聚焦装置，包括：透镜，透镜板，图像传感器，图像传感器板，至少两个可旋转结构和至少两个条，其中透镜连接到透镜板，图像 传感器连接到图像传感器板，其中每个条带分别被布置成缠绕到可旋转结构中的一个上，可旋转结构和条布置在透镜板和图像传感器板之间，可旋转结构和/或 条带被布置成与透镜板和图像传感器板接触，并且其中透镜和图像传感器之间的距离通过将条带卷绕到旋转结构上或从可旋转结构上而被调节。

公开(公告)号：US20150002732A1

公开(公告)日：2015-01-01

申请号：US14300721

申请日：2014-06-10

Applicant: Axis AB

Inventor： Jonas HJELMSTROM

IPC: H04N5/235

CPC classification number: H04N5/2353

Abstract: A method for setting a camera exposure time of a camera is disclosed. A moving indicator is overlaid in a video sequence of images. The speed of the moving indicator corresponds to an exposure time below which objects that move at an angular speed which is slower than the indicator will be imaged by the camera as sharp. The speed of the moving indicator is adjusted such that it moves at the same speed as a moving object in the video sequence of images. The camera exposure time is then set based on the exposure time that corresponds to the speed of the moving indicator after the speed adjustment.

Abstract translation: 公开了一种用于设置照相机的照相机曝光时间的方法。 一个移动的指示符叠加在图像的视频序列中。 移动指示器的速度对应于暴光时间，在该曝光时间之下，以比该指示器慢的角速度移动的物体将被相机锐化成像。 调整移动指示器的速度，使其以与图像的视频序列中的移动对象相同的速度移动。 然后根据与速度调节后的移动指示器的速度对应的曝光时间设定相机曝光时间。