Patent application number | Description | Published |
20080316174 | MOTION ESTIMATION WITH ADAPTATION OF THE CORRELATION BLOCK SIZE - A process for determining the displacement of an entity equipped with a sensor for capturing a sequence of images, comprising a step for determining a motion vector associated with a current image as a function of at least one correlation calculation between a first block of pixels in the current image and a second block of pixels from which the vector points towards said first block of pixels, with said second block being in a previous image in the sequence of images, wherein the dimensions of the first block are determined as a function of at least a motion vector associated with a previous image in the image sequence. | 12-25-2008 |
20100245627 | PROCESSING FOR CAPTURED IMAGES - A method is provided for reading a captured image, with the captured image comprising at least first and second parts and a border area positioned between the first and second parts. Converted pixels are obtained by applying digital-to-analog conversion to the pixels in the captured image, and the converted pixels corresponding to the border area of the captured image are stored in a buffer. A first set of processed pixels is obtained by applying image processing to the converted pixels corresponding to the first part of the image and to the converted pixels stored in the buffer, and a second set of processed pixels is obtained by applying image processing to the converted pixels corresponding to the second part of the image and to the converted pixels stored in the buffer. A processed image is provided by combining the first and second sets of processed pixels. Also provided is a processing device for reading a captured image. | 09-30-2010 |
20130015910 | DEVICE FOR TRANSFERRING PHOTOGENERATED CHARGES AT HIGH FREQUENCY AND APPLICATIONSAANM Tubert; CedricAACI SassenageAACO FRAAGP Tubert; Cedric Sassenage FRAANM Roy; FrancoisAACI SeyssinsAACO FRAAGP Roy; Francois Seyssins FRAANM Mellot; PascalAACI Lans en VercorsAACO FRAAGP Mellot; Pascal Lans en Vercors FR - A device for transferring charges photogenerated in a portion of a semiconductor layer delimited by at least two parallel trenches, each trench including, lengthwise, at least a first and a second conductive regions insulated from each other and from the semiconductor layer, including the repeating of a first step of biasing of the first conductive regions to a first voltage to form a volume accumulation of holes in the area of this portion located between the first regions, while the second conductive regions are biased to a second voltage greater than the first voltage, and of a second step of biasing of the first regions to the second voltage and of the second regions to the first voltage. | 01-17-2013 |
20130027563 | METHOD OF REAL-TIME CHECKING OF A MATRIX IMAGING DEVICE, AND ASSOCIATED DEVICE - A method is for monitoring the electrical integrity of lines of photosites of an imaging device with matrix array of photosites. The control lines of photosites may include for each line of photosites an emission of elementary electrical control signals for the photosites of the line. The method may include diagnosis of the elementary electrical control signals emitted. | 01-31-2013 |
20130077082 | Device and Method for Determining the Distance to an Object - A method and apparatus for defining, from a first periodic signal, a second signal of same period, including the steps of: generating a third signal exhibiting detectable events; and synchronizing the second signal for each event. | 03-28-2013 |
20130153754 | DEVICE HAVING SPAD PHOTODIODES FOR DETECTING AN OBJECT - The disclosure relates to a method for detecting the presence of an object near a detection device, comprising: reverse biasing single photon avalanche photodiodes, at a bias voltage greater than a breakdown voltage of a PN junction of each photodiode, emitting pulses of an incident photon beam, detecting photodiodes which avalanche trigger after the reception by the photodiode of at least one photon of a reflected photon beam produced by a reflection of the incident beam on an object near the detection device, determining the object presence as a function of the existence of at least one avalanche triggering in one of the photodiodes, and selecting a number of photodiodes to be reverse biased in relation to the detection device, as a function of a load of a circuit for generating the bias voltage. | 06-20-2013 |
20140028556 | OPTICAL NAVIGATION DEVICES - An optical navigation device is provided for detecting movement of a pointer, such as a finger, in three dimensions. A sensor obtains images of the pointer which have been illuminated by an illumination source, and an image scaling module determines the difference in size between images acquired by the image sensor to determine the difference in height of the pointer between images. | 01-30-2014 |
20140117214 | AMBIENT LUMINOSITY LEVEL DETECTION - A method wherein the updating of a counter is triggered when a photodiode reaches a discharge threshold. | 05-01-2014 |
20140166859 | CIRCUIT AND METHOD FOR MEASURING AN AMBIENT LIGHT LEVEL - A device includes an image sensor and a circuit for controlling the sensor. The control circuit is configured control the device in a first operating mode and second operating mode. In the first operating mode images acquired by the sensor are output. In the second operating mode, no images are provided, but a selected subassembly of pixels of the image sensor are read and image data therefrom is processed to provide an ambient luminosity value. | 06-19-2014 |
20140247979 | METHOD AND DEVICE FOR GENERATING HIGH DYNAMIC RANGE IMAGES - A method of generation, by a digital processing device, of a first high dynamic range digital image from second and third digital images of a same scene, including, for at least one point of the first image: determining a brightness index; comparing this index with at least one of first, second, third, and fourth decreasing thresholds stored in a memory; and determining the value of the point by taking into account the value of the index. | 09-04-2014 |
20140333834 | MULTIPLE-SENSOR IMAGE ACQUISITION SYSTEM - Each of a first and second image acquisition device includes: a circuit for providing a primary clock signal and a frequency synthesizing circuit capable of generating at least one secondary clock signal from said primary clock signal. The frequency synthesizing circuit in each image acquisition device has a fractional phase-locked loop configuration. A synchronization comparison circuit in each image acquisition device functions to compare sync between an external sync signal and an internal sync signal. An adjustment of the fraction phase lock loop operation is made in response to the sync comparison. | 11-13-2014 |