Abstract: A system for determining a distance to an object comprises an image capture device (101) which has a coded aperture and an image sensor which is positioned out of a focus plane of the coded aperture. A receiver (103) receives an image of a scene from the image sensor and a detector (105) detects at least two image objects of the image corresponding to ghost images of the object resulting from different openings of the coded aperture in response to an optical characteristic of the object. A distance estimator (107) then determines a distance to the object in response to a displacement in the image of the at least two image objects. The distance may be to a person and the image may be a bright pupil image wherein pupils are enhanced by reflection of light by the retina. The image may be compensated by a dark pupil image of the scene.

Abstract: A method for calibrating an ambience lighting system for providing an ambient light effect for a cinema display screen is proposed. The method is based on implementing the ambience lighting system in the form of one or more of coded light (CL) sources. The method then includes processing one or more images of a scene being illuminated by the ambience lighting system to determine, based on the CL embedded into the light output of the individual CL sources, color and/or an intensity of the light generated by the individual CL source. The set of control data for controlling the CL sources to provide the desired ambient light effect is then based not only on the color and/or intensity of image content to be displayed on the cinema display screen, but also on the determined color and/or intensity of the light output of the individual CL sources.

Abstract: A mobile device (1) is disclosed comprising a data processing facility (10), a touch control facility (20) arranged to provide a touch input signal (St) to the data processing facility, and a motion state sensor facility (30) arranged to provide a shock indication signal (Sj) indicative for a magnitude of a third or higher derivative of a position of the mobile device. The mobile device further comprises a mode control facility (15) for selecting one of a plurality of mutually different operational modes (M1, M2). The plurality of mutually different operational modes at least comprises a normal operation mode (M1) wherein the touch input signal is used as control signal for controlling operation of the mobile device and a shock touch protection mode (M2), wherein the touch input signal is inhibited.

Abstract: A mobile device (1) is disclosed comprising a data processing facility (10), a touch control facility (20) arranged to provide a touch input signal (St) to the data processing facility, and a motion state sensor facility (30) arranged to provide a shock indication signal (Sj) indicative for a magnitude of a third or higher derivative of a position of the mobile device. The mobile device further comprises a mode control facility (15) for selecting one of a plurality of mutually different operational modes (M1, M2). The plurality of mutually different operational modes at least comprises a normal operation mode (M1) wherein the touch input signal is used as control signal for controlling operation of the mobile device and a shock touch protection mode (M2), wherein the touch input signal is inhibited.

Abstract: A mobile device (1) is disclosed comprising a data processing facility (10), a touch control facility (20) arranged to provide a touch input signal (St) to the data processing facility, and a motion state sensor facility (30) arranged to provide a shock indication signal (Sj) indicative for a magnitude of a third or higher derivative of a position of the mobile device. The mobile device further comprises a mode control facility (15) for selecting one of a plurality of mutually different operational modes (M1, M2). The plurality of mutually different operational modes at least comprises a normal operation mode (M1) wherein the touch input signal is used as control signal for controlling operation of the mobile device and a shock touch protection mode (M2), wherein the touch input signal is inhibited.

Abstract: A device comprising an input for receiving image data representing light captured by a camera, and an image analysis module for detecting a coded light component modulated into the light with a modulation frequency. The camera has an exposure time, and the light is captured over a sequence of exposures each lasting for an instance of the exposure time. The detection performed by the image analysis module experiences a frequency blind spot in said detection due to an effect of said exposure time. To address this issue, the device further comprises an output for controlling one or more parameters of the camera which affect the exposure time, and a controller configured to control the one or more parameters to avoid that the modulation frequency corresponds to the frequency blind spot.

Abstract: An apparatus estimates control features of remote controls comprising cameras for detecting light points from beacons located at or near devices that are to be controlled via the remote controls by letting the cameras further detect light points from non-beacons. Processors estimate the control features in response to information from the detections of the light points. The non-beacons comprise noise sources or any other sources different from the beacons. Memories store per time-interval the information per detection. The light coming from the beacons may be modulated light and the light coming from the non-beacons may be other light. The information may comprise coordinates, sizes and intensities of light points per detection and per time-interval. The control feature may comprise a pointing position, a distance, a rotation, a tilt, a location, a speed, an acceleration, a movement and/or a zoom of the remote control.

Abstract: The present invention relates to a mobile device for detecting light. The mobile device (300) includes a photo detector (320) which is arranged at the end of a socket barrel (114) of an audio jack socket in the mobile device. The socket barrel serves to collimate the light onto the photo detector.

Abstract: A vision system is disclosed having an image sensor for capturing an image, the image sensor having a lens, an image processing unit and optionally a memory unit. The image processing unit is adapted to capture and/or store in the memory, for selected areas of the image, a set of frames from the past, where the division of the image in areas and/or the number of frames from the past depend on lens parameters, position and/or orientation of the image sensor, or image parameters of the captured image.

Abstract: A coded lighting system comprises a set of light sources and a remote control unit or an arrangement. The set of light sources emits coded light. In order to do so each light source is associated with a unique identifier. The remote control unit or the arrangement comprises an image sensor which captures images comprising light emitted by at least one of the light sources in the set of light sources. By analyzing the captured images the remote control unit or the arrangement is able to associate light sources affecting a particular region and/or object. The remote control unit or the arrangement is thereby able to transmit a control signal comprising updated light settings to the set of light sources.

Abstract: There is provided a method for detecting modulated light comprising: receiving a set of images acquired by means of a rolling shutter camera having image acquisition settings comprising a frame rate, fframe, and a line rate, fline; identifying in consecutive frames of said images—a pattern governed by the ratio between a modulation frequency, fc, of a modulated light source and the line rate, fline, and—between consecutive frames a spatial shift of said pattern governed by the ratio between said modulation frequency fc, and said frame rate, fframe; and providing based on said pattern and spatial shift thereof, an estimate of the modulated light amplitude from said light source.

Abstract: An apparatus estimates control features of remote controls comprising cameras for detecting light points from beacons located at or near devices that are to be controlled via the remote controls by letting the cameras further detect light points from non-beacons. Processors estimate the control features in response to information from the detections of the light points. The non-beacons comprise noise sources or any other sources different from the beacons. Memories store per time-interval the information per detection. The light coming from the beacons may be modulated light and the light coming from the non-beacons may be other light. The information may comprise coordinates, sizes and intensities of light points per detection and per time-interval. The control feature may comprise a pointing position, a distance, a rotation, a tilt, a location, a speed, an acceleration, a movement and/or a zoom of the remote control.

Abstract: According to one aspect of the disclosure, a lighting system comprises a remote control unit (4) and at least one lighting device (2a, 2b, 2c) comprising a light driver (13) and a light emitter (14). The remote control unit (4) comprises an image capturing unit (5) and is arranged to control the lighting device (2a, 2b, 2c). To do so, the remote control unit (4) receives information relating to current/present settings of the image capturing unit (5), then determines one or more properties of signals for visible light communications based on these settings. The one or more properties are then communicated to the at least one lighting device (2a, 2b, 2c). Upon reception thereof the light driver (13) generates a light emitting control signal based on the received properties and visible light communications based on the light emitting control signal is emitted by the light emitter (14).

Abstract: The present invention relates to a mobile device for detecting light. The mobile device (300) includes a photo detector (320) which is arranged at the end of a socket barrel (114) of an audio jack socket in the mobile device. The socket barrel serves to collimate the light onto the photo detector.

Abstract: The possibility to emit and detect coded light, whereby data is modulated into the light, is known. According to one aspect of the present disclosure, to reduce the risk of the modulation going undetected due to possible frequency blind spots in the detection spectrum, the lighting device (2a, 2b, 2c) is arranged such that the frequency of its emitted modulated light (3a, 3b, 3c) shivers around a base, or center, frequency. For example the modulated light (3a, 3b, 3c) may be transmitted using pulse-width-modulation, and the resulting pulse-width-modulation light signal (3a, 3b, 3c) may thus have a period that fluctuates around the base period (T). The parameters determining the shivering of the modulated light (3a, 3b, 3c) may be chosen such that visible flicker in the emitted modulated light (3a, 3b, 3c) is avoided. According to another aspect, the lighting device (2a, 2b, 2c) emits with a plurality of different modulation frequencies simultaneously.

Abstract: An apparatus (1) estimates control features of remote controls (10) comprising cameras (11) for detecting light points (51, 52) from beacons (31, 32) located at or near devices (20) that are to be controlled via the remote controls (10) by letting the cameras (11) further detect light points (61, 62) from non-beacons (41, 42). Processors (2) estimate the control features in response to information from the detections of the light points (51, 52, 61, 62). The non-beacons (41, 42) comprise noise sources or any other sources different from the beacons (31, 32). Memories (3) store per time-interval the information per detection. The light coming from the beacons (31, 32) may be modulated light and the light coming from the non-beacons (41, 42) may be other light. The information may comprise coordinates, sizes and intensities of light points (51, 52, 61, 62) per detection and per time-interval.

Abstract: A device comprising an input for receiving image data representing light captured by a camera, and an image analysis module for detecting a coded light component modulated into the light with a modulation frequency. The camera has an exposure time, and the light is captured over a sequence of exposures each lasting for an instance of the exposure time. The detection performed by the image analysis module experiences a frequency blind spot in said detection due to an effect of said exposure time. To address this issue, the device further comprises an output for controlling one or more parameters of the camera which affect the exposure time, and a controller configured to control the one or more parameters to avoid that the modulation frequency corresponds to the frequency blind spot.

Abstract: A method of self-calibrating a lighting device, comprising: —monitoring a calibration area, which encompasses at least a part of an area being illuminable by the lighting device; and—calibrating the light output settings of the lighting device. The monitoring operation includes repeating: —detecting any relevant change, out of a set of relevant changes comprising at least a light intensity change, in the calibration area during a monitoring time, while keeping the light output of the lighting device constant; and—determining an amount of change within the monitoring time; until the amount of change is below a limit value. Thereby the lighting device does not perform the calibration until it has detected a period of no or small changes.

Abstract: A video analysis device (3), configured to receive video sequences of an environment within a field of view (8) of a camera (7), and to analyze the video sequences as regards behavior of persons present in the video sequences. The video analysis device is configured to determine a footprint (15) of at least one light source (9) illuminating an area within the field of view with coded light. The coded light carries a unique light source identification for each light source. Furthermore, the video analysis device is configured to receive association information associating at least one object (13) with the light source identification of each light source illuminating each object, and to determine an analysis area (17) within the field of view where said analysis of the video sequences is to be done. The determination is done for each object, and by means of the association information.

Abstract: A method for calibrating an ambience lighting system for providing an ambient light effect for a cinema display screen is proposed. The method is based on implementing the ambience lighting system in the form of one or more of coded light (CL) sources. The method then includes processing one or more images of a scene being illuminated by the ambience lighting system to determine, based on the CL embedded into the light output of the individual CL sources, color and/or an intensity of the light generated by the individual CL source. The set of control data for controlling the CL sources to provide the desired ambient light effect is then based not only on the color and/or intensity of image content to be displayed on the cinema display screen, but also on the determined color and/or intensity of the light output of the individual CL sources.