Axis Ab

Jonas Hjelmstrom

Jan Sonnvik

Anders Johannesson

Niklas Lindman

Daniel Persson

A protective camera enclosure () for a monitoring camera () comprises a cover portion () which is selectively moveable, in response to a detected tampering threat, from a retracted configuration exposing the camera () to an extended configuration covering and physically protecting the camera ().

Camera tampering protection

The present invention relates to a method () for reducing stray light in an output image of a scene, said method comprising; providing () a camera () comprising a lens assembly (), providing () an aperture unit () having an aperture gate () in an aperture plane being orthogonal to an optical axis (OA) of said lens assembly (), said aperture gate () being adjustable in said aperture plane, acquiring (), by means of said camera (), 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 () in said aperture plane, analyzing () said plurality of images for generating data pertaining to a difference in stray light content with respect to said plurality of images, and producing () said output image based on said data pertaining to said difference in stray light content.

Method, lens assembly and camera for reducing stray light

The present invention relates to digital cameras and in particular to positioning of image sensors in digital cameras. By providing a digital camera comprising a lens system, at least one image sensor which is attached to a sensor disc and an axle to which the sensor disc is attached and wherein the axle is configured to allow manipulation thereof for adjusting the tilt of the at least one image sensor, a simple solution is provided, enabling adjustment of the image sensor position in the digital camera.

Digital camera with adjustable sensor

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.

Method and apparatus for setting a camera exposure time

The present invention relates to a focusing device comprising:

Focusing device

A digital video camera performs a method to improve the image quality of captured images in a video image stream. The method includes capturing a first subset of images, outputting the images of the first subset of images as the video image stream, moving an image sensor and/or a lens of the digital video camera from a respective normal position to a respective test position before capturing an image of a second subset of images. The digital video camera captures a second subset of images interspersed with the first subset of images, compares image quality of the first subset of images with an image of the second subset of images, and determines if the image of the second subset of images exhibits improved image quality as compared with the image of the first subset of images. If so, an image quality improvement operation is initiated.

Method and digital video camera for improving the image quality of images in a video image stream

A calibration method in a camera with a P-Iris lens having an adjustable iris opening including the steps of adjusting the size of the iris opening between a first opening position and a second opening position, recording a plurality of images during the adjusting, analyzing the images, and determining an iris opening based on the analysis, that obtains a high quality image. The analyzing includes use of high frequency content in the recorded images.

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Staffanstorp, Sweden

Jonas Hjelmstrom