Patent application number | Description | Published |
20080219582 | Apparatus for Filtering an Image Obtained by Block Based Image Decompression - Block-wise compressed image data is decompressed and the decompressed data is subjected to a cascade of low pas filtering operations, in order to remove block edge artefacts and/or ringing artefacts. Selected ones of said low pass filtering operations in the cascade are skipped for selected pixel locations. The decision to skip is based on the size of the variation for the selected pixel location. An increasing number of filtering operations in the cascade is skipped with increasing size of the variations. | 09-11-2008 |
20090022416 | REDUCTION OF COMPRESSION ARTEFACTS IN DISPLAYED IMAGES, ANALYSIS OF ENCODING PARAMETERS - A hither before unknown cause of image artefacts has been identified. Encoders such as MPEG encoders may use two picture structures: Field pictures and frame pictures. For a frame picture both frame and field-based DCT (and other types) of coding may be used. The decision whether to use frame or field based coding is not always made correctly. In the decoded image this leads to an image artefact visible as stripped blocks. The invention reduces, in one aspect of the invention, these artefacts by analyzing the block content on the presence of such artefacts and if the analysis proof the existence of such artefacts applying a vertical low pass filter to the data in the block. In another aspect of the invention encoding parameters are checked for combination of encoding parameters for which the artefact may occur and such blocks are indicated. The invention may be embodied in a method as well as in a device such as a receiver, encoder, decoder, display device etc. | 01-22-2009 |
20090123079 | REDUCTION OF COMPRESSION ARTEFACTS IN DISPLAYED IMAGES - In a method, receiver and display device a compressed data stream is decompressed. Decompression may cause ringing effect. In order to reduce ringing effects an analysis window (AWH, AWV) is used, which is divided into two sub-areas (AWH | 05-14-2009 |
20090274381 | SCALABLE CODING - A method of encoding data comprises the steps of dividing the data into sets of data, transforming each set of data into a set of transform coefficients (A, B, C), assigning each transform coefficient to a single sub-set (S | 11-05-2009 |
20120141000 | METHOD AND SYSTEM FOR IMAGE ANALYSIS - A method of image analysis, includes: obtaining a sequence ( | 06-07-2012 |
20120195469 | FORMATION OF A TIME-VARYING SIGNAL REPRESENTATIVE OF AT LEAST VARIATIONS IN A VALUE BASED ON PIXEL VALUES - A method of forming a time-varying signal representative of at least variations in a value based on pixel values from a sequence of images, the signal corresponding in length to the sequence of images, includes obtaining the sequence of images. A plurality of groups ( | 08-02-2012 |
20120195473 | METHOD AND SYSTEM FOR PROCESSING A SIGNAL INCLUDING AT LEAST A COMPONENT REPRESENTATIVE OF A PERIODIC PHENOMENON IN A LIVING BEING - A method of processing a signal including at least a component representative of a periodic phenomenon in a living being includes obtaining at least one first signal having at least a component representative of a periodic phenomenon in a living being. Separate data representative of at least a periodic component of motion of the living being are obtained by obtaining a sequence of images showing the living being, synchronized with the at least one first signal, and carrying out video-based motion analysis of the sequence of images. The data are used at least to suppress a component of the first signal corresponding to the periodic component of motion of the living being. | 08-02-2012 |
20120195486 | METHOD AND SYSTEM FOR OBTAINING A FIRST SIGNAL FOR ANALYSIS TO CHARACTERIZE AT LEAST ONE PERIODIC COMPONENT THEREOF - A method of facilitating obtaining a first signal ( | 08-02-2012 |
20120197137 | METHOD AND SYSTEM FOR CARRYING OUT PHOTOPLETHYSMOGRAPHY - A method of photoplethysmography includes processing a signal ( | 08-02-2012 |
20130272393 | VIDEO CODING AND DECODING DEVICES AND METHODS PRESERVING PPG RELEVANT INFORMATION - The present invention relates to a video encoding device ( | 10-17-2013 |
20130294505 | VIDEO CODING AND DECODING DEVICES AND METHODS PRESERVING - The present invention relates to a video encoding device ( | 11-07-2013 |
20140086462 | DEVICE AND METHOD FOR PROCESSING DATA DERIVABLE FROM REMOTELY DETECTED ELECTROMAGNETIC RADIATION - The present invention relates to a device and a method for processing data derivable from remotely detected electromagnetic radiation emitted or reflected by a subject, the data comprising physiological information. An input signal is received and indicative entities thereof are transmitted, the indicative entities being indicative of physiological information representative of at least one vital parameter in a subject of interest, wherein the indicative entities are detected under consideration of at least one defined descriptive model describing a relation between physical skin appearance characteristics and a corresponding representation in the input signal such that non-indicative side information represented by non-indicative entities in the input signal is substantially undetectable in a resulting transmitted signal. The at least one vital parameter is detected from the transmitted signal comprising the indicative entities, wherein the at least one vital parameter is extracted under consideration of detected skin color properties representing circulatory activity. | 03-27-2014 |
20140153800 | METHOD AND SYSTEM FOR OBTAINING A FIRST SIGNAL FOR ANALYSIS TO CHARACTERIZE AT LEAST ONE PERIODIC COMPONENT THEREOF - A method of facilitating obtaining a first signal, for analysis to characterize at least one periodic component, includes obtaining two second signals representative of intensities of electromagnetic radiation. The first signal is at least derivable from an output signal obtainable by applying a transformation to the second signals such that any value of the output signal is based on values from each respective second signal at corresponding points in time. The method further includes obtaining a value of a variable determining influences of components of respective second signals on the output signal when the signals corresponding to the second signals are captured and the transformation is applied, by (i) analyzing the first, second and/or the output signals to select a value of a parameter corresponding to a respective one of the variables; or (ii) calculating values of at least one time-varying factor corresponding to a respective one of the variables. | 06-05-2014 |
20140206965 | DISTORTION REDUCED SIGNAL DETECTION - The present invention relates to a device and a method for extracting information from detected characteristic signals. A data stream ( | 07-24-2014 |
20140243682 | DEVICE AND METHOD FOR MONITORING MOVEMENT AND ORIENTATION OF THE DEVICE - The present invention relates to a device and method for monitoring movement and orientation of the device, comprising an imaging unit ( | 08-28-2014 |
20140276089 | DEVICE AND METHOD FOR DETERMINING VITAL SIGNS OF A SUBJECT - A device for determining a vital sign of a subject comprises an interface for receiving a data stream derived from detected electromagnetic radiation reflected from a region of interest including a skin area of the subject, said data stream comprising a data signal per skin pixel area of one or more skin pixels for a plurality of skin pixel areas of said region of interest, a data signal representing the detected electromagnetic radiation reflected from the respective skin pixel area over time. An analyzer is provided for analyzing spatial and/or optical properties of one or more data signals in one or more wavelength ranges. A processor is provided for determining a vital sign information signal of the subject based on the data signals of skin pixel areas within the skin area, and a post-processor is provided for determining the desired vital sign from said vital sign information signal. The determined spatial and/or optical properties are used by the processor for determining the vital sign information signal and/or by the post-processor for determining the desired vital sign. | 09-18-2014 |
20140276099 | DEVICE AND METHOD FOR DETERMINING VITAL SIGNS OF A SUBJECT - A device for determining a vital sign of a subject comprises an interface that receives a data stream derived from detected electromagnetic radiation reflected from a region of interest including a skin area of the subject, said data stream comprising a data signal per skin pixel area of one or more skin pixels for a plurality of skin pixel areas of said region of interest, a data signal representing the detected electromagnetic radiation reflected from the respective skin pixel area over time. An analyzer analyzes spatial and/or temporal properties of the skin area. A processor determines a vital sign information signal of the subject based on the data signals of skin pixel areas within the skin area, and a post-processor determines the desired vital sign from said vital sign information signal, wherein said determined spatial and/or temporal properties are used by the processor for determining the vital sign information signal and/or by the post-processor for determining the desired vital sign. | 09-18-2014 |
20140334697 | DEVICE FOR OBTAINING A VITAL SIGN OF A SUBJECT - A device for obtaining a vital sign of a subject despite motion of the subject, in particular for discriminating a vital sign such as a respiratory information signal from noise in a projection based vital signs registration, comprises an interface that receives a set of image frames of a subject. An analysis unit determines the amount of direction changes and/or the time distances between direction changes within a region of interest in a subset of image frames comprising a number of image frames of said set. An evaluation unit determines if said region of interest within said subset of image frames comprises a vital sign information and/or noise by use of the determined amount of direction changes and/or the time distances for said subset of image frames. A processor determines the desired vital sign of the subject from said region of interest within said subset of image frames. | 11-13-2014 |
20150051521 | CARDIOPULMONARY RESUSCITATION APPARATUS COMPRISING A PHYSIOLOGICAL SENSOR - The invention proposes aphysiological sensor for use with a Cardio Pulmonary Resuscitation (CPR) apparatus, the sensor comprising at least one camera element, adapted to detect a physiological signal, at least one illumination element, adapted to illuminate an area of a patient's body, a housing, adapted to receive the at least one camera element and the at least one illumination element, the housing comprising a fixation element for the fixation of the sensor either on an automated CPR apparatus or on the patient's body, and an automated Cardio Pulmonary Resuscitation apparatus comprising a physiological sensor. | 02-19-2015 |
20150104088 | METHOD AND SYSTEM FOR OBTAINING A FIRST SIGNAL FOR ANALYSIS TO CHARACTERIZE AT LEAST ONE PERIODIC COMPONENT THEREOF - A method of facilitating obtaining a first signal, for analysis to characterize at least one periodic component, includes obtaining two second signals representative of intensities of electromagnetic radiation. The first signal is at least derivable from an output signal obtainable by applying a transformation to the second signals such that any value of the output signal is based on values from each respective second signal at corresponding points in time. The method further includes obtaining a value of a variable determining influences of components of respective second signals on the output signal when the signals corresponding to the second signals are captured and the transformation is applied, by (i) analyzing the first, second and/or the output signals to select a value of a parameter corresponding to a respective one of the variables; or (ii) calculating values of at least one time-varying factor corresponding to a respective one of the variables. | 04-16-2015 |
20150208987 | DEVICE AND METHOD FOR EXTRACTING PHYSIOLOGICAL INFORMATION - The present invention relates to a device and a method for extracting physiological information from detected electro-magnetic radiation emitted or reflected by a subject ( | 07-30-2015 |
Patent application number | Description | Published |
20150223700 | DEVICE, SYSTEM AND METHOD FOR DETERMINING VITAL SIGNS OF A SUBJECT BASED ON REFLECTED AND TRANSMITTED LIGHT - A device, system and method for determining vital signs of a subject is presented that improves accuracy and reliability, the device comprising a detection unit for contactless detection of light in at least two different wavelength ranges from a region of interest of a subject, wherein said detection unit is configured to detect a first light portion in a first wavelength range from light reflected from said region of interest in response to illumination by a first light source and to detect a second light portion in a second wavelength range from light transmitted through said region interest in response to illumination by a second light source, wherein said detection unit is configured to detect said first light portion and said second light portion simultaneously in response to illuminations that are at least temporarily simultaneous and wherein said first wavelength range and said second wavelength range are different. A processing unit is provided for deriving plethysmography, PPG, signals from the detected light for said at least two different wavelength ranges. An analysis unit is provided for deriving a desired vital sign from the PPG signals for at least two different wavelength ranges. | 08-13-2015 |
20150238120 | DEVICE AND METHOD FOR PROCESSING DATA DERIVABLE FROM REMOTELY DETECTED ELECTROMAGNETIC RADIATION - The present invention relates to a device and a method for processing data derivable from remotely detected electromagnetic radiation ( | 08-27-2015 |
20150272489 | DEVICE, SYSTEM AND METHOD FOR TUMOR DETECTION AND/OR MONITORING - A device, system and method for tumor detection and/or monitoring is proposed. The proposed device comprises a first analysis unit for analyzing the spatial distribution of the photoplethysmographic, PPG, amplitude of PPG signals obtained from a region of interest, a second analysis unit for analyzing the spatial distribution of arterial blood oxygen saturation obtained from said PPG signals, and an evaluation unit for detecting and/or monitoring a tumor in said region of interest based on said two analyses. | 10-01-2015 |
20160120482 | DEVICE, SYSTEM AND METHOD FOR EXTRACTING PHYSIOLOGICAL INFORMATION - The present invention relates to a device, system and a method for extracting physiological information indicative of at least one vital sign of a subject from detected electromagnetic radiation reflected from the subject. The device comprises an input interface for receiving a data stream of detection data derived from detected electromagnetic radiation reflected from a skin region of a subject, wherein the detected electromagnetic radiation is detected by a polarized radiation detector, while the polarization angle of the polarized radiation detector is changed, a PPG extraction unit for extracting a photoplethysmographic, PPG, signal from said detection data, a signal quality determination unit for determining quality metrics from said PPG signal for different settings of the polarization angle of the polarized radiation detector, a selection unit for selecting the optimum quality metric value from the determined quality metrics and for generating polarization control information for use by said polarized radiation detector for setting the polarization angle to an angle value, at which said optimum quality metric value was obtained, for subsequent detection of radiation, and a processor for deriving physiological information indicative of at least one vital sign from the PPG signal. | 05-05-2016 |