Abstract: An encoder that encodes a current block in a picture includes circuitry and a memory coupled to the circuitry. The circuitry, in operation: selects at least one transform basis from among candidates for a transform basis which include a basis of a type-II discrete cosine transform (DCT-II) and at least one of a basis of a type-IV discrete cosine transform (DCT-IV) or a basis of a type-IV discrete sine transform (DST-IV); and transforms prediction error values of the current block, using the at least one transform basis selected. When the size of the current block is greater than a threshold size, the circuitry selects at least one transform basis after excluding at least one of the basis of the DCT-IV or the basis of the DST-IV from the candidates. The threshold size is at most half a maximum size to which the DCT-II is applicable.

Abstract: A method of calibrating an RGB-D device having an RGB-D camera and a displacement sensor includes: providing a calibration target, the calibration target including a plurality of visual markers shown in a surface of the calibration target, wherein the plurality of visual markers have known locations on the calibration target; positioning the calibration target within a field of view of the RGB-D device such that the RGB-D camera and displacement sensor capture data corresponding to the calibration target; moving the calibration target a known distance in relation to a location of the RGB-D device; receiving output data from the RGB-D device including data from the RGB-D camera and displacement sensor; aligning data from the RGB-D camera and data from the displacement sensor; calibrating a relative configuration of the RGB-D device based on aligned data output from the RGB-D device and known position information of the calibration target.

Abstract: A spectral imager includes a filter array, a pixel array, and a lenslet array therebetween. The filter array includes a plurality of filter regions. The lenslet array includes a plurality of lenslets each configured to form a respective image of the filter array on a respective one of a plurality of regions of the pixel array. The spectral imager may also include a fore-optic lens, the filter array being located between the lenslet array and the fore-optic lens. The spectral imager may also include a fore-optic lens, the filter array being located between the lenslet array and the fore-optic lens. Each of the plurality of filter regions is configured to selectively transmit radiation based on wavelength and/or polarization.

Abstract: To reduce discomfort of occupants caused by operation sound of a camera cooling system in a vehicle, a vehicle-mounted camera includes a camera cooler and a controller. The vehicle-mounted camera is installed inside of a windshield. The camera cooler cools the vehicle-mounted camera. The controller determines if the vehicle-mounted camera is in a high temperature state. If it is determined that the vehicle-mounted camera is in the high temperature state, the controller controls the camera cooler to operate. The controller controls an air conditioner to provide a sound generation process to generate concealing sound to conceal operation sound caused by the camera cooler when the air conditioner operates.

Abstract: A Frame Rate Up-Conversion (FRUC) derivation process, based on frame rate up-conversion techniques, is developed in the reference software JEM (Joint Exploration Model) by the Joint Video Exploration Team (JVET). In one embodiment, a modified FRUC derivation process improves the performances of the current FRUC tool is provided. For example, some candidates of a bi-predictive pair may be discarded initially, which would save signification processing time. The discarding decision may depend on various criteria such as, e.g., a ratio between matching costs of a bi-predictive pair from two reference picture lists, a difference between the matching costs of a bi-predictive pair normalized by their respective template areas.

Abstract: A method and apparatus for performing a frequency-dependent joint component secondary transform (FD-JCST). The method includes obtaining a plurality of transform coefficients in a transform coefficient block; determining whether at least one of the plurality of transform coefficients is a low-frequency coefficient; based on determining that the at least one of the plurality of transform coefficients is the low-frequency coefficient, determining whether the low-frequency coefficient is a non-zero value; and based on determining that the low-frequency coefficient is the non-zero value, performing a joint component secondary transform (JCST) on the low-frequency coefficient and signaling a related syntax to indicate that the JCST is performed.

Abstract: A personal vehicle monitoring system is disclosed including a video camera coupled with a personal vehicle to show a view not in a direct field of view of a rider of the personal vehicle, and a display unit coupled with the personal vehicle and in communication with the video camera to display images captured by the video camera, wherein the display unit includes circuits and software to indicate various events such as other vehicles approaching the personal vehicle. The display unit includes a display device coupled with a display controller. The video camera communicates with the display controller via a video camera controller.

Abstract: A time-of-flight camera has: a light source for emitting light; a first imaging sensor; and a controller configured to perform a time-of-flight measurement calibration based on determining at least one of a cyclic error and an offset error by detecting light emitted from the light source with a second imaging sensor, wherein a predetermined optical path is provided between the light source and the second imaging sensor.

Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.

Abstract: Aspects of the disclosure provide a method and an apparatus for video decoding. Processing circuitry of the apparatus decodes prediction information of a current block from a coded video bitstream. The prediction information indicates an inter prediction mode. The processing circuitry calculates at least one hash value based on motion information of a previously decoded block and determines whether the motion information is different from one or more motion information candidates in a candidate list for the current block based on the at least one hash value of the previously decoded block and at least one hash value of each of the one or more motion information candidates. The processing circuitry adds the motion information to the candidate list when the motion information is different from the one or more motion information candidates and reconstructs at least one sample of the current block based on the candidate list.

Abstract: A video decoding apparatus includes: a matrix reference pixel derivation unit configured to derive, as a reference image, an image obtained by down-sampling an image adjacently above a target block and an image adjacently leftward of the target block; a weight matrix derivation unit configured to derive a matrix of weighting factors in accordance with an intra prediction mode and a target block size; a matrix prediction image derivation unit configured to derive a prediction image by using a product of elements of the reference image and elements of the matrix of the weighting factors; and a matrix prediction image interpolation unit deriving, as a prediction image, the prediction image or an image obtained by interpolating the prediction image, wherein the weight matrix derivation unit derives a matrix with a size of a width equal to or smaller than a width of the target block size and a height equal to or smaller than a height of the target block size.

Abstract: The present invention provides a device for evaluating particles in a liquid, which is provided with: a main body member that has a first opening part and a second opening part, which face each other, and an internal hollow part; a first flow path and a second flow path, which are connected to the main body member and are in communication with the hollow part; a first drive member and a second drive member, which are arranged within the hollow part so as to face each other and which are slidable within the hollow part; a drive means which drives the first drive member and/or the second drive member in the facing direction within the hollow part; a liquid supply means which introduces a liquid containing particles into the hollow part through the first flow path; and an imaging means which captures an image of particles within the hollow part through the first opening part or the second opening part.

Abstract: An image processing apparatus includes an image processor and an encoder. The image processor enhances an edge of an input image, removes noise from the input image, synthesizes the edge-enhanced image and the noise-removed image, and removes a high frequency from the synthesized image. The encoder pre-encodes a downsized synthesized image, obtains a pre-bit rate of the pre-encoded image, sets a quantization parameter value based on a reference bit rate and the pre-bit rate, and compresses the high-frequency removed image based on the quantization parameter value.

Abstract: Disclosed herein are systems and methods for calibrating a stereoscopic imaging device. An example implementation includes receiving, at a processor, a plurality of image pairs from the stereoscopic imaging device and calculating, for each image pair in the plurality of image pairs, a respective row delta value indicative of a deviation along a horizontal axis between the first image captured by the first sensor and the second image captured by the second sensor. The implementation further includes determining a median row delta value based on each respective row delta value and subsequently a set of respective disparities in one or more features in the first image and the second image based on the median row delta value. The method further includes calculating a column delta value and calibrating the stereoscopic imaging device using the median row delta value and the column delta value.

Abstract: A vehicle may include a camera configured to generate first image data based on tuning parameters; a first image controller including an image signal processor (ISP) configured to perform the image processing of the first image data; and a second image controller including the ISP configured to perform the image processing of the first image data. When the second image controller determines the tuning parameter based on an operation mode, the second image controller may be configured to transmit the determined tuning parameter to the camera, and the ISP of the first image controller may be configured to receive the first image data.

Abstract: The invention relates to video coding and decoding. A method comprises extracting a first spatial subset from coded pictures of a first bitstream into a second bitstream; extracting a second spatial subset from the coded pictures of the first bitstream into a third bitstream; generating a fourth bitstream by selecting and removing a first set of pictures from the third bitstream, wherein the selection is performed in a manner that the first set of pictures is not required for decoding any pictures of the fourth bitstream; decoding the second bitstream; and decoding the fourth bitstream.

Abstract: Video coding systems and methods are described using an enhanced motion compensated picture. In exemplary embodiments, an enhanced motion compensated picture is generated by applying at least one high-pass filter to the motion compensated picture and adding the output of the filter to the motion compensated picture. Coefficients of the high-pass filter are selected by comparing the enhanced motion compensated picture to an original picture. The selected coefficients may be quantized and entropy coded into a bit stream. The high-pass filter may be a cross-plane filter, in which a luma component, which may be an enhanced luma component, is high-pass filtered and the output of the filter is added to at least one of the chroma components to generate an enhanced chroma component.

Abstract: Systems, methods, and instrumentalities are disclosed for color space conversion. A video signal associated with a first color space may be received. The first color space may comprise a point. A partition of the first color space that includes the point may be determined. The partition may be associated with a first dimensionality. The point may be converted from the first color space to a second color space using a color space conversion model that corresponds with the partition. The color space conversion model may be associated with a second dimensionality. The second dimensionality may be less than the first dimensionality.

Abstract: An improved method of performing intra prediction for encoding or decoding uses interpolation such that substitute samples are found for samples to be used in the interpolation calculation that lie outside a normal reference range. The substitute samples can be repeated end samples from the bottom of a reference portion to the left of the target block, or right samples of a reference portion above the target block. An encoder can signal to a decoder whether to use intra prediction or interpolation prediction.

Abstract: A 3D image sensing system includes: a 3D image sensor (100), including: a light-emitting module (102), configured to emit a structured light to a target (300), the structured light has a known pattern; and a light-sensing module (104) receives a reflected structured light of the structured light that is reflected by the target; and a processor (110), configured to perform a time-of-flight distance measurement to obtain a first distance corresponding to the target based on time-of-flights of the structured light and the reflected structured light, the first distance has a global offset, the processor (110) establishes an unknown distance image based on the reflected structured light, estimates a disparity between the unknown distance image and a known distance image according to the known pattern, calculates a global compensation coefficient based on the disparity, and compensates the first distance to eliminate the global offset according to the global compensation coefficient.