196 results about "Color filter array" patented technology

A pixel array includes photodiodes and a color filter array. A first fraction of the photodiodes is included in CIS pixels and a second fraction of the photodiodes is included in hybrid CIS / EVS pixels. The photodiodes are arranged into groupings. The color filter array includes first, second, and third color filters arranged in a mosaic pattern over the photodiodes. Each grouping includes a plurality of subgroupings including a first subgrouping disposed under at least one of the first color filters, a second subgrouping disposed under at least one of the second color filters, and a third subgrouping disposed under at least one of the third color filters. Each of the first, second, and third subgroupings includes at least one CIS pixel, and at least one of the first subgrouping of photodiodes further includes at least one hybrid CIS / EVS pixel disposed under at least one of the first color filters.

A pixel circuit includes a pixel array and a color filter. The pixel array includes pixels arranged in rows and columns, and each pixel includes a photodiode configured to photogenerate image charge in response to incident light, and a transfer transistor coupled to the photodiode to transfer the image charge out from the photodiode. The color filter array includes color filters each having one of a plurality of colors and disposed over at least one of the pixels. Each of the pixels is coupled to a first readout circuit, and the plurality of pixels includes a first subset of the pixels not coupled to a second readout circuit and a second subset of the pixels coupled to the second readout circuit. Two diagonally arranged pixels are coupled together to share a floating diffusion, and the two diagonally arranged pixels coupled together are disposed underneath color filters of a same color.

A pixel circuit includes a pixel array and a color filter. The pixel array includes a plurality of pixels each comprising two photodiodes, a floating diffusion coupled between the two photodiodes, and two transfer transistor coupled between the two photodiodes and the floating diffusion. The color filter array includes a plurality of color filters each having one of a plurality of colors and disposed over at least one of the pixels. Each pixel is coupled to a first readout circuit. The pixels include a second subset of the pixels coupled to a second readout circuit and a first subset of the pixels not coupled to the second readout circuit. Each pair of pixels arranged in two adjacent rows includes a first pixel included in the second subset of the pixels and a second pixel included in the first subset of the pixels and disposed underneath one of the color filters.

A processor-implemented method includes obtaining a color filter array (CFA) input image, obtaining pattern information corresponding to a CFA, preprocessing the input image based on the pattern information, generating an inferred image by inputting the preprocessed input image to an artificial neural network (ANN) model, and generating an output image by selecting, for each pixel, from either one of the preprocessed input image and the inferred image, based on the pattern information.

The invention provides an array image demosaicing method based on dynamic convolution and adaptive coding, which relates to the technical field of image processing, and comprises the following steps: acquiring single-channel original image data and a corresponding color filtering array arrangement type identifier; converting the arrangement type identifier into a multi-dimensional physical feature vector, and inputting the multi-dimensional physical feature vector into a feature processor of a neural network model to generate a weighting coefficient vector; carrying out weighted combination on the plurality of special arrangement transformation matrixes through a weighting coefficient vector to obtain a transformation component, adding the transformation component and a basic convolution kernel parameter to obtain a dynamic convolution kernel parameter, and carrying out directional modulation on a specific spatial position of the dynamic convolution kernel parameter based on a direction weight component in a multi-dimensional physical feature vector; and performing convolution operation on the original image data by using the dynamic convolution kernel parameters, extracting multi-scale features, reconstructing image features, and outputting multi-channel color image data, so that the method can be adaptive to different color filter array types, and the demosaicing precision and generalization capability are improved.

Each smallest repeating unit (SRU) in a colour filter array has a first sub-unit (FSU) and a second sub-unit (SSU). For a first sub-image, first image data is read out from photo-sensitive cells that correspond to FSUs of SRUs lying in a row (R1-R3) or column, and by skipping reading out from photo-sensitive cells that correspond to SSUs of a first predefined percent (FPP) of the SRUs, while reading out the first image data from photo-sensitive cells that correspond to SSUs of a remainder of the SRUs. For a second sub-image, second image data is read out from photo-sensitive cells that correspond to FSUs of the FPP, whilst skipping reading out from photo-sensitive cells that correspond to FSUs of the remainder, and by skipping reading out from photo-sensitive cells that correspond to the SSUs of the SRUs. Sub-pixel shift is performed between the sub-images. Image(s) are then generated from the sub-images.

A pixel circuit includes a pixel array and a color filter. The pixel array includes a plurality of pixels arranged in rows and columns, each pixel including four photodiodes, a floating diffusion, and four transfer transistors. The color filter array includes a plurality of color filters each having one of a plurality of colors and disposed over at least one of the pixels. Each of the plurality of pixels is coupled to a first readout circuit, and the plurality of pixels includes (i) a first subset of the pixels not coupled to a second readout circuit and (ii) a second subset of the pixels coupled to the second readout circuit. Floating diffusions of two diagonally arranged pixels are coupled together, and the two diagonally arranged pixels coupled together are disposed underneath color filters of a same color.

Systems and techniques are described for image signal processor motion detection. In various examples, first image data including pixel values may be generated, where each pixel value is associated with a respective color tag of a color filter array. A first set of the pixel values corresponding to a first block may be determined. A second set of pixel values may be determined based on a respective pixel value of the first set and the respective color tag associated with that respective pixel value. A first intensity value associated with the first block may be determined based on the second set of pixel values. A second intensity value associated with a reference block may be determined. A comparison value representing a difference between the first intensity value and the second intensity value may be determined. A signal indicating detected motion may be sent based on the comparison value.

According to an embodiment, a method for determining via an iterative training procedure, a phase modulation function, a spectral transmission function and a post-processing procedure that are useable in a hyperspectral imaging, HSI, apparatus (100) is provided, wherein the HSI apparatus (100) comprises a lens assembly (110) comprising a diffractive optical element, DOE, (112) arranged to implement said phase modulation function that results in a phase delay that varies with the spatial position of an aperture of the DOE (112), an image sensor assembly (120) arranged to receive light through the lens assembly (110), the image sensor assembly (120) comprising a two-dimensional,2D, color filter array, CFA, (124) arranged on an image sensor (122) such that the light received through the lens assembly (110) enters the image sensor (122) through the CFA (124), wherein the CFA (124) is arranged to implement said spectral transmission function that results in a spectral transmission that varies with a wavelength and with a spatial position of the CFA (124); and a controller (130) comprising an image reconstruction portion arranged to derive the HS image based on light received on the image sensor (124) via application of said post-processing procedure that comprises an artificial neural network, ANN, the method comprising processing a plurality of training items through a training network (300) that represents an arrangement of the lens assembly (110), the CFA (124) and the post-processing procedure in the HSI apparatus (100) and that comprises respective training models (302, 304, 306) for determining the phase modulation function, the spectral transmission function and weights of the ANN, and wherein the training model (304) for determining the spectral transmission function accounts for one or more predefined implementation constraints of the CFA (124).

An electrically-controllable color filter array based on a phase-change material, and an artificial vision system. The filter array includes a plurality of color filter units; each of the color filter units includes a metal layer, a bottom transparent conductive layer, a chalcogenide phase-change material layer, and a top transparent conductive layer; the red, green and blue filter function of each of the color filter units is adjusted according to the thickness of the bottom transparent conductive layer and the top transparent conductive layer; in the color filter units arranged in the array; the state transition of the chalcogenide phase-change material layer in each of the color filter units is realized by adjusting an electric pulse applied to the bit line and the word line where the electric pulse is present.

Embodiments of image sensors and methods of fabrication are provided herein. In some embodiments, a device includes: a substrate having a dielectric layer disposed atop the substrate; a pillar disposed within the dielectric layer; and a plurality of voids arranged in an array within the dielectric layer, wherein the pillar is disposed between adjacent voids of the plurality of voids. A two-dimensional array of color filters can be disposed atop the substrate having respective voids of the plurality of voids disposed between adjacent color filters and having the pillar disposed between adjacent voids and between diagonally disposed color filters of the array of color filters. A plurality of photoelectric elements can be disposed in the substrate and correspond to and be disposed beneath individual color filters of the array of color filters.

An image sensor includes a sensor substrate including a plurality of pixels sensing incident light, a nano-optical micro-lens array including a plurality of nano-optical micro-lenses respectively corresponding to the plurality of pixels, and a color filter array disposed between the sensor substrate and the nano-optical micro-lens array and including a plurality of color filters. Each of the plurality of nano-optical micro-lenses includes a plurality of nanostructures to condense the incident light onto a corresponding pixel, and when viewed in a cross-section of the nano-optical micro-lens array, a fill factor denotes a ratio of an area of the nanostructures arranged within a reference circle among the plurality of nanostructures included in one of the plurality of nano-optical micro-lenses, and the reference has a pixel size corresponding to the one nano-optical micro-lens as a diameter, the fill factor is greater than or equal to 95%.

The invention discloses a self-adaptive brightness control method and system for an optical toning film of a color filter array, and relates to the technical field of photoelectron, and the method comprises the following steps: obtaining characteristic data of display content and ambient light data, and selecting target color band configuration in combination with a preset filtering spectrum band; according to the target ribbon configuration, applying a control signal to the optical toning film to obtain a spectrum correction coefficient; the display content is divided into a plurality of areas, a brightness demand matrix is generated, a corrected local brightness target is obtained in combination with the spectrum correction coefficient, meanwhile, driving data of the micro LED array is solved, and a backlight driving matrix is obtained; the micro LED array performs beam shaping according to the backlight driving matrix, and outputs a target picture in combination with the color filter array and the pixel driving unit; dynamically generating a color correction matrix according to the transmission state of the optical toning film of the target picture and the backlight light field distribution; according to the invention, the problems of brightness balance and color deviation are solved through micro LED partition driving and optical color matching film regulation and control.

Disclosed is an imaging system with an image sensor and processor(s). The image sensor has a plurality of photo-sensitive cells arranged on a photo-sensitive surface of the image sensor; a colour filter array with colour filters of at least three different colours; and a polarisation mask with polarisation filters arranged on an optical path of at most a first predefined percent of the colour filters. The processor(s) is / are configured to: read out image data from the image sensor; and process the image data to generate at least one of: a full-resolution colour image, a full-resolution polarisation image, a high-dynamic range (HDR) image.

A CMOS image sensor includes a unit pixel array including a photodiode array, a color filter array, a micro-lens array, and a grid isolation structure laterally separating adjacent color filters. The grid isolation structure includes a first low-n grid, a second low-n grid underlying the first low-n grid, and a metal grid within the second low-n grid, the first low-n grid being narrower than the second low-n grid. The color filter array includes color filter matrixes, all color filter matrixes have the same arrangement pattern. Sizes of color filters in each color filter matrix vary depending on locations of the color filters in the color filter matrix. In an edge portion, a distance between a center of a color filter matrix and a center of a corresponding unit pixel matrix in plan view varies depending on a location of the unit pixel matrix in the CMOS image sensor.

An electronic device includes: memory; a color filter array (CFA); an image sensor operatively connected to the CFA, the image sensor being configured to capture a plurality of images respectively having a plurality of measured spectral densities in a plurality of spectral bands; and a processor operatively connected to the at least one memory and the image sensor, wherein the at least one processor is configured to: measure a plurality of crosstalk values in a plurality of pixels and in a plurality of K channels of the plurality of images (the K represents a number of pixels per a color of the CFA), estimate a plurality of spectral-crosstalk values by applying an estimation function to the plurality of crosstalk values, and control to store, in at least one of the memory, the image sensor, or the processor, the estimated plurality of spectral-crosstalk values.

A light field imaging device and method are provided. The device can include a diffraction grating assembly receiving a wavefront from a scene and including one or more diffraction gratings, each having a grating period along a grating axis and diffracting the wavefront to generate a diffracted wavefront. The device can also include a pixel array disposed under the diffraction grating assembly and detecting the diffracted wavefront in a near-field diffraction regime to provide light field image data about the scene. The pixel array has a pixel pitch along the grating axis that is smaller than the grating period. The device can further include a color filter array disposed over the pixel array to spatio-chromatically sample the diffracted wavefront prior to detection by the pixel array. The device and method can be implemented in backside-illuminated sensor architectures. Diffraction grating assemblies for use in the device and method are also disclosed.

In an example implementation, a method includes a color filter array including a plurality of cells arranged according to a spatially repeating pattern. Each of the cells includes a color filter element having a first area and an optically transparent element having a second area, where the first plane is smaller than the second area. The color filter array is configured to receive light from an environment of the device, filter at least a portion of the light using the unit, and transmit at least a portion of the filtered light to an image sensor.

An electrophoretic display device includes a pixel structure and a color filter array. In the pixel structure, an area of a blue pixel electrode is less than an area of a red pixel electrode, and the area of the blue pixel electrode is less than an area of a green pixel electrode. In the color filter array, areas of red, green, and blue filter units are all substantially the same and the red, green, and blue filter units are overlapped with the red, green, and blue pixel electrodes respectively. A ratio of the area of the red filter unit to the area of the red pixel electrode is RFF; a ratio of the area of the green filter unit to the area of the green pixel electrode is GFF; a ratio of the area of the blue filter unit to the area of the blue pixel electrode is BFF, and BFF>RFF≥GFF.

Methods, systems, and devices for wireless communications are described. A first network entity may receive control signaling from a second network entity, the control signaling indicating an image mask representing a color filter array that is used to generate mosaic images at the second network entity. The first network entity may receive a first image from the second network entity over a wireless communications channel and the first image may be a single layer image including a mosaic pattern according to the color filter array. The first network entity may generate a second image based on the first image and the image mask and the second image may include multiple layers associated with colors of the second image.

Near infrared imaging is highly complementary to color imaging having a wide range of applications. For example, in health applications, the near infrared can provide biomolecular information on tissue that is not apparent under visual examination nor from the inspection of color images of tissue. Thus, there is utility in viewing both visible color and near infrared images in combination. Described herein are methods to perform visible and near infrared imaging as well as hybrid visible color and near infrared imaging with a single conventional color filter array RGB sensor. The methods automatically provide spatially co-registered color and near infrared images and the methods can be used as the basis for a multispectral or hyperspectral imaging system.

In an example implementation, a method includes a color filter array including a plurality of units arranged according to a spatially repeating pattern. Each of the units includes a color filter element having a first area, and an optically clear element having a second area, where the first planar is less than the second area. The color filter array is configured to receive light from an environment of the apparatus, filter at least a portion of the light using the units, and transmit at least a portion of the filtered light to an image sensor.

Methods, systems, and devices for wireless communication are described. A first network entity may receive control signaling from a second network entity indicating an image mask representing a color filter array for generating a mosaic image at the second network entity. A first network entity may receive a first image from a second network entity over a wireless communication channel, and the first image may be a single-layer image comprising a mosaic pattern according to a color filter array. The first network entity may generate a second image based on the first image and the image mask, and the second image may include a plurality of layers associated with a color of the second image.

Motor vehicle, which includes the following: a frame and an imaging system (10) supported by the frame and comprising the following: a camera (100) including a lens (110) and an image sensor (120) with a sparsely populated color filter array, wherein the camera (100) is configured to to generate image data based on light incident on the image sensor (120), and the lens (110) has an aperture higher than f / 2.4; a controller (20) configured to generate an image using the image data; and a display device (30) configured to display the image, characterized by the fact that the image sensor (120) contains several pixels and the sparsely populated color filter array contains a repeating mosaic (130) of color filters arranged in a pattern such that the mosaics (130) are more concentrated near a center point of the image sensor (120) than near the edges of the image sensor (120).

An electrically-controllable color filter array based on a phase-change material, and an artificial vision system. The filter array includes a plurality of color filter units; each of the color filter units includes a metal layer, a bottom transparent conductive layer, a chalcogenide phase-change material layer, and a top transparent conductive layer; the red, green and blue filter function of each of the color filter units is adjusted according to the thickness of the bottom transparent conductive layer and the top transparent conductive layer; in the color filter units arranged in the array; the state transition of the chalcogenide phase-change material layer in each of the color filter units is realized by adjusting an electric pulse applied to the bit line and the word line where the electric pulse is present.

The invention provides an image sensor and a crosstalk amount reducing method thereof, the image sensor comprises a pixel array structure, and the pixel array structure is an array composed of a plurality of pixels; a photoelectric conversion structure; the color filter array comprises at least two color filter units with different colors, the color filter units with different pigments correspond to different spectrum channels, one color filter unit corresponds to at least two spectrum channels with different light sensitivities, and the other color filter unit corresponds to at least two spectrum channels with different light sensitivities. The color filter array is located in the light incidence direction of the pixel array structure, the pixel array structure is located between the photoelectric conversion structure and the color filter array and is connected with the photoelectric conversion structure, and the color filter array is located in the light incidence direction of the pixel array structure. Wherein after photoelectric signal conversion is completed, photoelectric signals, close to purity, of the pixels are obtained through operation.

An image sensor includes a pixel array including a plurality of unit pixels configured to receive light of a color filter array having a first color pattern of size k×l arranged therein, where k and l are natural numbers of 3 or more, the image sensor configured to generate first image data including the first color pattern and an image signal processor (ISP) configured to generate second image data including a second color pattern of size p×q, by remosaicing the first image data, where p and q are natural numbers of 2 or more, where a size of the second color pattern is smaller than a size of the first color pattern, and the image sensor is configured to transmit the second image data an application processor that is external to the image sensor.

An image sensor includes a pixel array and a color filter array covering the pixel array, where the color filter array includes a plurality of color filter elements, the plurality of color filter elements include at least one first color filter element and at least one second color filter element, each first color filter element includes a basic color filter and an extended color filter, and each second color filter element includes a plurality of basic color filters. A color of the extended color filter is different from a color of the basic color filter. An optical signal passing through the basic color filter is at least for imaging, and an optical signal passing through the extended color filter is for spectral measurement.

An image sensor has photo-sensitive cells arranged on a photo-sensitive surface; and a colour filter array with first type(s) of colour filters, second type(s) of colour filters, third type(s) of colour filters, and fourth type(s) of colour filters. Information indicative of a gaze direction is obtained. A gaze region and a peripheral region in the photo-sensitive surface are determined. Image data from the image sensor is read out, wherein when reading out, processor(s) is / are configured to: selectively skip reading out the image data from those photo-sensitive cells in the gaze region that have the fourth type(s) of colour filters; and selectively read out the image data from those photo-sensitive cells in the peripheral region that have the fourth type(s) of colour filters. The image data is processed to generate an image.

A photographic film is formed by combining panchromatic black and white emulsion with a color filter array to produce a full color image using only black and white film and processing.