Axis Ab

Gunnar Dahlgren

Stefan Lundberg

Per Kannermark

Carl-Axel Alm

Björn Benderius

Johan Jeppsson Karlin

Andreas Muhrbeck

A method for stray light compensation is disclosed. The method comprising: acquiring a first image with a first imaging device covering a first field-of-view; acquiring a second image with a second imaging device covering a second field-of-view, wherein the second field-of-view is larger than the first field-of-view and wherein the first field-of-view is included in the second field-of-view; estimating stray light components in pixels of the first image from pixel data of pixels in the second image; and compensating for stray light in the first image by subtracting the estimated stray light components in pixels of the first image. Also, a system for stray light compensation is disclosed.

Method and system for stray light compensation

A method for suppressing chromatic aberration, especially blue or red fringing, in a digital image with multiple color channels is disclosed. The method comprises negatively correcting a first color channel by subtracting an overshoot component of the first color channel. The subtraction is subject to a lower threshold, which is dependent on a local value of at least one further color channel.

Method and device for suppressing chromatic aberration in a digital image

A digital video camera that includes a photo sensor having a plurality of pixels, each pixel being arranged to obtain and output pixel data, a focusing device to set a focus of the digital video camera, a processing unit to process pixel data from a first subset of the pixels such that image frames of said video image stream are rendered based on pixel data in said first subset of pixels, and an array of micro lenses covering a second subset of the pixels, each of said micro lenses covering a number of pixels. The first subset of pixels is confined within an area and the second subset of pixels is arranged outside and adjacent to said first subset of pixels such that a frame of pixels of said second subset is formed around said first subset of pixels.

Method of setting focus of a digital video camera and a digital video camera doing the same

The invention relates to a method and a system for digitally processing of frequently updated images from a camera. The system comprises at least one camera (), at least one display unit, a network () for connecting the at least one camera with at least one display unit, and an image processing means (). The image processing means comprises means for defining a first scaling area and a peripheral scaling area, which is enclosing the first scaling area, within an acquired digital image, and means for scaling the peripheral scaling area differently than the first scaling area so that the peripheral scaling area is downscaled in relation to the first scaling area, wherein the first scaling area is uniformly scaled in both a vertical and a horizontal direction.

Method and apparatus for digitally processing frequently updated images from a camera

Method and apparatus for combining a first video signal and a second video signal. The method comprising the act of replacing data in the second video signal with corresponding, in respect of a position within an image, data from the first video signal when said data in the second video signal represent a predefined repetitive pattern. The apparatus comprising a first input for input of the first video signal; a second input for input of the second video signal; an output for output of a third video signal; a keying-pattern detector connected to said second input for detecting a predefined repetitive pattern, wherein said keying-pattern detector comprises a means for receiving and/or storing a representation of the predefined repetitive pattern, and an output that is arranged to provide a signal indicating whether said predefined repetitive pattern is detected or not; and a video switch connected to said first input, said second input, said output and said output of the keying-pattern detector for continuously selecting a video signal from one of the first and second input to be represented in a third video signal, said selection being controlled by a signal from the output of the keying-pattern detector.

Method and apparatus for combining video signals to one comprehensive video signal

A timing generator comprising a programmable program memory that is arranged to comprise program instructions for controlling the generation of timing signals, a timing generator controller for processing the program instructions from the program memory, and an output timing signal controller. The output timing signal controller is connected to the timing generator controller for reception of control data and a timing signal specification that determine the appearance of said timing signals. The output timing signal controller is arranged to provide a plurality of output timing signals. The timing generator controller includes a decoder for decoding program instructions from the memory. An imaging device comprising an image sensor, an analogue image processor, an analogue to digital (A/D) converter, and a timing generator, according to the description given above, providing timing signals to the image sensor, the analogue image processor and the A/D converter.

Growing community of inventors

Gothenburg, Sweden

Gunnar Dahlgren