摘要:
The present invention relates to a device for the non-invasive determination of physiological parameters of a test subject, said device comprising an illumination unit (32) having a plurality of LED types, the emission maxima of which at different wavelengths range from the visible to in the NIR wavelength range and have an emission maximum of less than 590 nm, a photosensor that is to be placed on the skin, a data processing unit (11) for reading out the photosensor and for controlling the illumination unit (32) in such a manner that the different LED types are individually activated in a predetermined activation sequence at successive activation start times t k (k=1, 2... M) for a respectively predefined activation period and that the activation sequence is repeated with a clock frequency as a sequence n = 1, 2... N, wherein the clock frequency is sufficiently high in relation to the resolution of the pulse. The invention is characterized in that the photosensor is a CCD-based or CMOS-based camera sensor (34) which is arranged relative to the illumination unit (32) such that it can detect light passing through the body by means of transflexion, that the data processing unit (11) reads out the camera sensor in each activation sequence at the activation start times t k (k=1, 2... M) and over the respective activation period, and that the detected intensities, which are combined as sub-regions of sensor elements and associated with the respective activation sequence and the respective activation start time t k (k=1, 2... M), are recorded as a chronological series, wherein sub-regions of the camera sensor are combined by reading out lines of the camera sensor, which are parallel to the connecting axis between illumination unit and camera sensor and along which the distance from the illumination unit increases, and parallel lines are combined to form a single averaged line. The data processing unit is configured to evaluate the averaged line as a function of the distance of the illumination unit for carrying out an oxymetry of the muscles.
摘要:
A method and an apparatus for shooting an image and a terminal device are provided. The method is applied in a terminal device having a first camera assembly (10, 66) and a second camera assembly (20, 67), and includes: controlling (S201) n adjacent pixel points (221) corresponding to a same filter unit (211) in the second image sensor (22) to be under respective different amounts of exposure; obtaining (S202, S305) a first image and a second image of an object respectively by the first image sensor (12) and the second image sensor (22); performing (S203, S306) an image splitting on the second image to obtain a third image having a same number of pixels as the first image; performing (S204, S307) an image composition on the third image and the first image to obtain a high dynamic range image of the object.
摘要:
L'invention concerne un capteur d'images comportant : - une pluralité de pixels, chaque pixel étant adapté à fournir un signal de sortie (V OUT ) représentatif d'une quantité d'énergie lumineuse reçue depuis un instant de début d'une phase d'intégration (T I ) du pixel ; et - un circuit de commande configuré pour, lors d'une phase d'acquisition (T F ) d'une image, sélectionner successivement chaque pixel un nombre n de fois au cours d'une même phase d'intégration (T I ) du pixel, sans réinitialiser le pixel entre la première et la dernière sélection du pixel, et, à chaque sélection d'un pixel, comparer le signal de sortie (V OUT ) du pixel à un seuil de quantification et lire un signal binaire représentatif du résultat de la comparaison.
摘要:
A digital imaging method for use with an endoscope in ambient light deficient environments is disclosed. In an implementation, the method may include illuminating the environment with pulsed electromagnetic radiation and sensing differing exposures of reflected electromagnetic radiation with a pixel array of an image sensor. The method may further include receiving image data from the pixel array that corresponds to the differing exposures. The method may include creating exposed frames from the image data, where each frame corresponds with a different exposure. The method may further include emitting pulses of electromagnetic radiation during a blanking period. The method may further include creating a display frame from the exposed frames. The method may further include creating a stream of images by sequentially combining display frames taken using the differing exposures to provide increased dynamic range.
摘要:
A system for calculating a visibility range from a vehicle is disclosed. The system comprises a high dynamic range image sensor system comprising a pixel array including a plurality of pixels. The image sensor further includes readout circuitry in electrical communication with each pixel of the pixel array. The readout circuitry is operable to readout a distinct pixel value corresponding to one of a plurality of exposure times for each pixel in a single image frame. The system further comprises at least one processor in communication with the readout circuitry. The processor is operable to calculate a visibility range from the vehicle based on a plurality of image processing algorithms.
摘要:
The present disclosure provides a method for generating an HDR image. The method includes: providing (S1) an image sensor, in which the image sensor includes a pixel array and a filter array disposed on the pixel array, and each filter unit in the filter array covers a plurality of pixel units in the pixel array so as to constitute a pixel structure unit; and performing (S2) an exposure control to the pixel units within each pixel structure unit respectively, in which a first part of the pixel units are exposed for a first exposure time, a second part of the pixel units are exposed for a second exposure time, and the first exposure time is greater than the second exposure time.
摘要:
A solid-state imaging device 1 is provided with (1) a photodetecting section 11 in which MxN of pixels are two-dimensionally arranged in M rows and N columns, and a pixel P m,n at the m-th row and the n-th column includes a photodiode PD1 m , n , (2) a row selecting section 20 that selects one or more rows, out of M rows of the photodetecting section 11, instructs each pixel in the selected rows to accumulate an electric charge generated in the photodiode PD1 m,n in response to the incidence of light, and instructs to output data corresponding to the amount of accumulated electric charge of each pixel by each row of the photodetecting section 11, and (3) a first signal processing section 30 that inputs data of each pixel, outputted by each row of the photodetecting section 11 by an instruction from the row selecting section 20, and outputs the data by each pixel.
摘要:
An imaging element comprising: an imaging unit that has: a plurality of groups each including at least one pixel; and a plurality of signal readout units that are each provided to each of the groups and read out a signal from the pixel; and a control unit that controls the signal readout unit in at least one group among the plurality of groups is provided. Each of the plurality of groups may include a plurality of the pixels. The control unit may select at least one group among the plurality of groups and control the signal readout unit by using a control parameter that is different from a control parameter that is used for another group among the plurality of groups.
摘要:
The invention relates to a microelectrode array (1), comprising a plurality of electrodes (2) for electrically measuring brain waves and an integrated optical stimulation unit for stimulating brain regions (11) by means of optical signals, wherein the stimulation unit has one or more electrical light sources (3).