Stmicroelectronics (Research & Development) Limited

Stmicroelectronics Gmbh

Stmicroelectronics S.a.

Stmicroelectronics France

Brian Douglas Stewart

Arnaud Bourge

Antoine Drouot

Andrew Hodgson

Andreas Aßmann

Héloïse Eliane Geneviève Gresset

Réka Hegedüs

Tanguy Le Dauphin

Heloise Gresset

In an embodiment an apparatus includes a scanning photographic sensor configured to acquire an image, according to an integration time of the sensor, of a scene illuminated with periodically emitted light pulses by a source, so that the image has a regular succession of bands with different luminosities when the integration time of the sensor is different from a period of the light pulses, a processor configured to generate a signature vector representative of the regular succession of bands with different luminosities being present in the image acquired by the photographic sensor, wherein the signature vector is independent of a reflectance of an objects of the scene and of a level of light in the scene, determine a frequency of the bands in the image on basis of the generated signature vector and determine the period of the pulses of the source on basis of the determined frequency of the bands in the image, and a controller configured to adjust the integration time of the photographic sensor so that the integration time is a multiple of the determined period of the light pulses of the source.

Apparatus including a photographic sensor

A method for enhancing an image and an image enhancement device are described. The method for enhancing an image including: capturing an initial image including a plurality of pixels, and performing a pixel-by-pixel dehazing operation for each of the plurality of pixels. The performing including: generating, for each of the plurality of pixels, a value for a blended gray image based on color channels of the pixel, generating, for each of the plurality of pixels, a value for a transmission map based on the blended gray image, and generating, for each of the plurality of pixels, output color channels for a processed image based on the value for the transmission map, the processed image being an enhancement of the initial image.

Blended gray image enhancement

The present disclosure relates to a tone mapping method for a succession of images implemented by an image processing device. The method including a) the division of the images of the succession of images in a plurality of sub-blocks of first pixels; b) for a first image (INPUT_IMAGE) of the succession of images, the creation of a first mini-image (MPIC) comprising pixels of the first mini-image, each pixel of the first mini-image representing a corresponding sub-block of the first image, the intensity of each pixel of the first mini-image being representative of the intensity of the first pixels of the corresponding sub-block; c) the storage of the first mini-image (MPIC) in a memory; and d) for a second image (INPUT_IMAGE) of the succession of images, the modification of the second image according to the first mini-image (MPIC) in order to generate an output image.

Local tone mapping for HDR video

A system and method for a scalable depth sensor. The scalable depth sensor having an emitter, a receiver, and a processor. The emitter is configured to uniformly illuminate a scene within a field-of-view of the emitter. The receiver including a plurality of detectors, each detector configured to capture depth and intensity information corresponding to a subset of the field-of-view. The a processor connected to the detector and configured to selectively sample a subset of the plurality of the detectors in accordance with compressive sensing techniques, and provide an image in accordance with an output from the subset of the plurality of the detectors, the image providing a depth and intensity image corresponding to the field-of-view of the emitter.

Scalable depth sensor

The present disclosure relates to receiving an input signal; generating an output signal by integrating a leaked signal over an integration time, wherein the leaked signal is obtained based on a dampening signal, a leak factor and the input signal; and providing the output signal.

Method of operating a leaky integrator, leaky integrator and apparatus comprising a leaky integrator

The method of determining a focus measure from an image includes detecting one or more edges in the image by processing the image with one or more first order edge detection kernels adapted to reject edge phasing effects. A first measure of the strength of each of the edges, and the contrast of each of the edges may be determined. The method may include normalizing the first measure of the strength of each of the edges by the contrast of each of the edges to obtain a second measure of the strength of each of the edges, and resealing the second measure of the strength of each of the edges. The method may also include selecting one or more of the edges from the image in accordance with the second measure of their strengths, and calculating the focus measure from the second measure of the strengths of the selected edges.

Method of determining a measure of edge strength and focus

An imaging system includes an image sensor, a digital image sensing device and a host system. The digital image sensing device provides image data in a plurality of formats, suitable for the differing requirements of different applications running on a host system.

Imaging device, system and associated methods using multiple harmonized data streams

A method of processing image data produced by a solid state image sensor that is overlaid with a color filter array is based on range scaling, demosaicing, matrixing, range clipping and gamma correction being performed in two data collection passes. The demosaicing can be performed with pixels grouped in 2&#xd7;2 blocks, or quads.

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Edinburgh, United Kingdom

Brian Douglas Stewart