Nokia Corporation

Microsoft Technology Licensing, LLC

Nokia Technologies Oy

Huawei Technologies Co., Limited

Samu Koskinen

Tero Rissa

Ossi Kalevo

Juha Alakarhu

Jarmo Antero Nikula

Mikko Muukki

Eero Tuulos

Christian Mäkelä

Tuomo Maki-Marttunen

Matti Viikinkoski

Ville Nummela

Wing Kei Tang

Tommi Tavi

Tuomo MÄKI-Marttunen

A color filter apparatus includes a two-dimensional array of an N×M pattern of light sensitive elements with a plurality of I×J pixel groups. A 2×2 pixel group includes a first color filter of a first color that is a primary color and a second color filter of a second color that consists of green content and one other color. When the first color is green, the second color includes another primary color, but not a third primary color. When the first color is not green, the second color includes the first color.

Color filter array apparatus

In one example, at least a portion of a digital raw image frame captured by a digital image sensor is accessed. The accessed at least a portion of the digital raw image frame is de-noised without substantially modifying defective pixel values when present. In response to determining that at least one image frame pixel in the de-noised at least a portion of the digital raw image frame has a defective pixel value: the locations of each of the at least one image frame pixel having a defective pixel value are detected, and each defective pixel value in each detected location is corrected in the de-noised at least a portion of the digital raw image frame or the originally accessed at least a portion of the digital raw image frame.

Defective pixel value correction for digital raw image frames

An apparatus including a plurality of sensor elements, configured in an arrangement having a repeating pattern of sensor elements, the plurality of sensor elements including first monochromatic sensor elements configured to sense visible light of a first color; second monochromatic sensor elements configured to sense visible light of a second color; and panchromatic sensor elements configured to sense visible light of at least the first color and the second color, wherein the majority of the plurality of sensor elements are panchromatic sensor elements.

Color image sensing

In one example, luminance information related to a digital raw image frame captured via a color filter array is obtained. Chrominance information related to the digital raw image frame is obtained. The obtained luminance information and chrominance information are downscaled to a target resolution, such that one of pixel data of the captured digital raw image frame and the obtained chrominance information has been demosaiced before the downscaling. The downscaled chrominance information is reverse-demosaiced.

Downscaling a digital raw image frame

A system for optimized image stabilization, wherein a focus lock of a camera unit having an image stabilizer is detected and in response to this detection, the image stabilization is suspended. A target position for the image stabilizer is determined and the image stabilizer is driven to the target position. In response to a detected shutter release, the image stabilization is continued.

Optimized image stabilization

An apparatus includes a three dimensional array of light receptors disposed within a substrate having a light receiving surface, where light receptors disposed closer to the light receiving surface are responsive to light having shorter wavelengths than light receptors disposed further from the light receiving surface, and where each light receptor is configured to output a binary value and to change state between an off-state and an on-state by the absorption of at least one photon.

Image sensor

A method for processing image data comprises determining a set of parameters based on a binary digital image) such that said set of parameters comprises information about the density of white and/or black pixels of a first group of pixels of said binary digital image), and information about the density of white and/or black pixels of a second group of pixels of said binary digital image.

Device and method for processing digital images captured by a binary image sensor

An apparatus, method and computer program, in which there is provided an apparatus with a body, which apparatus has a set of camera modules mounted on the body, each camera module configured to take images with a first field of view and an adjustment mechanism configured to move the camera modules between a first configuration and a second configuration. In the first configuration, each camera module shares a substantially common field of view that covers a first view area. In the second configuration, the fields of view of the camera modules collectively form a second view area that is continuous and covers a second view area. A zoom-in image is formed in the first configuration using super-resolution combining of the images taken by the camera modules.

Set of camera modules hinged on a body and functionally connected to a single actuator

A method for providing an output image based on an input image, the method comprising determining a location of an output pixel with respect to an input image, determining values of elements of a filter array such that the effective width of the filter array depends on the density of exposed input pixels within the input image, and determining the value of the output pixel by performing a sum-of-products operation between non-zero values of the elements of the filter array and the values of input pixels of the input image located at respective positions, when the filter array is superimposed on the input image such that the center of the filter array corresponds to the location of the output pixel.

Adaptive method for processing digital images, and an image processing device

An apparatus includes an array containing N sub-diffraction limit light sensors each having an associated light absorption activation threshold for switching from a reset state to an activated state, where the light absorption activation values lie within a range of values. The apparatus further includes a processor connected with a memory including computer program code, where the memory and computer program code are configured to, with the processor, cause the apparatus at least to perform estimating an intensity of light that illuminates the array based on electrical outputs of the array.

Intensity estimation using binary sensor array with spatially varying thresholds

An apparatus includes an array of sub-diffraction limit-sized light receptors formed in a substrate having a light receiving surface. Each light receptor may be configured to output a binary valued bit element and to change state between an off-state and an on-state by the absorption of at least one photon. The apparatus further includes an optical filter structure disposed over the light receiving surface, the optical filter structure having of an array of filter pixels each having an associated passband spectral characteristic. A data element obtained from the array of sub-diffraction limit-sized light receptors is composed of a plurality of the bit elements output from a plurality of light receptors that underlie filter pixels having at least two different passband spectral characteristics.

Color filters for sub-diffraction limit-sized light sensors

An apparatus includes an array of sub-diffraction limit-sized light receptors formed in a substrate having a light receiving surface. Each receptor is configured to output an n-bit element and to change state based on the absorption of at least one photon (n is an integer &#x3e;0). The apparatus includes an optical filter structure disposed over the light receiving surface, the structure having an array of filter pixels, each having an associated passband spectral characteristic. A data element obtained from the array of receptors is generated from a combination of a plurality of the n-bit elements output from a plurality of light receptors that underlie filter pixels having at least two different passband spectral characteristics. The filter pixels having at least two different passband spectral characteristics form a gradient filter wherein bandpass regions increase when moving from a central region of the gradient filter towards an edge region.

Gradient color filters for sub-diffraction limit sensors

An apparatus includes an array of sub-diffraction limit-sized light receptors formed in a substrate having a light receiving surface. Each light receptor may be configured to output a scalar valued multi-bit element and to change state based on the absorption of at least one photon. The apparatus further includes an optical filter structure disposed over the light receiving surface, the optical filter structure having an array of filter pixels each having an associated passband spectral characteristic. A data element obtained from the array of sub-diffraction limit-sized light receptors is composed of a combination of a plurality of the multi-bit elements output from a plurality of light receptors that underlie filter pixels having at least two different passband spectral characteristics.

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Tampere, Finland

Samu Koskinen