Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Laurent Alacoque

Dominique Morche

Antoine Dupret

Marc Belleville

Tien Ho Phuoc

Fabien Gavant

The invention relates to a method wherein at least one output signal of a movement sensor () is taken into account for the potential division of an integrating period (T; T&#x2033;) of an image sensor () into a plurality of sub-periods (Ti; Ti').

Image acquisition method and device to divide integration time for image stabalization

A measurement circuit for a resistive sensor comprises an integrator of information representative of the difference between a current passing through the sensor and a first reference current, and a circuit for making the output of the integrator depend on a reference level.

Measurement circuit for bolometric detector

The invention relates to a method for generating super-resolution images using a processing device, the method includes: oversampling an input image to generate an oversampled image; modifying the pixel value of a first pixel of the oversampled image by: generating a similarity value for each one of a plurality of candidate pixels in the input image and/or in one or more other input images, candidate pixels being selected based on the position of the first pixel in the oversampled image, similarity value being generated by evaluating the similarity of a group of pixels adjacent to each of the candidate pixels to a group of pixels adjacent to the first pixel; selecting a first subset of candidate pixels on the basis of similarity values, and generating the modified pixel value of the first pixel based on the pixel values and on the similarity values of the first subset of candidate pixels.

Method and device for reconstructing super-resolution images

A method of demosaicing a digital raw image in the form of a matrix of pixels, each dedicated to a single color among several predetermined colors from color filters, includes obtaining a color digital image of the same resolution as the raw image and in which each pixel results from corresponding pixels in a luminance image and in chrominance images reconstructed from the raw image, transformation of the raw image by applying local convolution kernels to its pixels, taking into account neighboring pixels of different colors, to obtain an image of low frequency coefficients using a low frequency local kernel and images of high frequency coefficients using high frequency local kernels; reconstruction of the luminance image using at least the image of low frequency coefficients; reconstruction of the chrominance images using the images of high frequency coefficients.

Method of demosaicing a digital raw image, corresponding computer program and graphics or imager circuit

A method for entropic transcoding of a first sequence of binary data of words to transcode into a second compressed sequence of binary data uses a predetermined entropic code involving a variable-length of the encoded words to transcode each word of the first sequence of binary data into a transcoded word. Based on a predetermined number B of low-order bits, the method includes application to each word of the first sequence of binary data: subdivision of the word into first and second subwords, wherein the first subword includes the B low-order bits of the word, and the second subword includes the other high-order bits of the word, application of the predetermined entropic code to the second subword to obtain a second transcoded subword, and obtaining the transcoded word by concatenation of the first subword and of the second transcoded subword.

Method for entropically transcoding a first data stream into a second compressed binary data stream, and corresponding computer program and image recording device

A method of block-encoding a raster image by successive two-dimensional decompositions of blocks of the image in a base of functions using a combined application of a one-dimensional kernel of vertical decomposition of n pixels and of a one-dimensional kernel of horizontal decomposition of p pixels. In the method the horizontal dimension P of each block is determined as a multiple of p, P=k&#xb7;p, and a decomposition at log(P) level(s) of resolution is accomplished using the horizontal decomposition kernel, and the vertical dimension N of each block is determined as a multiple of n, N=l&#xb7;n, and a decomposition at log(N) level(s) of resolution is accomplished using the vertical decomposition kernel. For given values of n and p, the values of k and l are chosen such that the vertical dimension N is strictly less than the horizontal dimension P.

Method for block-encoding of a raster image of pixels, corresponding computer program and image capture device

Method for controlling an analogue switch including a transistor to which a variable analogue input voltage Vin is applied on a first terminal between a source terminal and a drain terminal of the transistor while a second terminal between the drain and the source terminal is at a variable output voltage V, including the steps of: during a first phase, applying a first voltage to the transistor gate, the first voltage equal to a sum of or a difference between Vin and a first constant potential V, and configured to make the transistor conduct; and during a second phase, applying a second voltage to the transistor gate, the second voltage equal to a sum of or a difference between V, Vin and a second constant potential V, and configured to block the transistor, the difference between the first voltage and the second voltage being constant.

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Voreppe, France

Laurent Alacoque