Abstract: A video encoder may encode a picture of video data using merge estimation regions (MERs). The video encoder may determine merge candidate lists in parallel for coding units within a MER. The video encoder may also partition the picture of video data into coding units according to a constraint, wherein the constraint specifies that the partitioning is constrained such that, for each MER containing one or more coding units, the one or more coding units are completely in the MER, and for each coding unit containing one or more MERs, the MERs are completely in the coding unit.

Abstract: Devices, methods, and computer program products for measuring the speed of an object. A speed measuring device includes a rangefinder module configured to measure distances from the device to a target object. Activating the device causes the device to measure a first distance from the device to the object along a first line-of-sight, and a second distance from the device to the object along a second line-of-sight. The device determines an angular displacement between the first line-of-sight and the second line-of-sight, and one or more of an elapsed time between measuring the first distance and measuring the second distance and a radial velocity of the object. The device then determines the absolute speed of the object based on the first distance, the second distance, the angular displacement, and one or more of the elapsed time and radial velocity.

Abstract: A surveying system comprises a laser scanner for scanning a distance measuring light and for acquiring point cloud data and a target instrument having a target for reflecting the distance measuring light, wherein the target is a sphere having a known diameter, the laser scanner comprises a distance measuring module for projecting the distance measuring light, for receiving a reflected distance measuring light and for performing a distance measurement, an optical axis deflector which enables to two-dimensionally deflect the distance measuring light, and an arithmetic control module for controlling the optical axis deflector, and wherein the arithmetic control module is configured to perform a circular scan on a surface of the target by the optical axis deflector, to obtain a center of the target based on the point cloud data acquired by the circular scan and the diameter, and to measure a distance of the center of the target.

Abstract: A decoding method is presented. a type of split of a block into transform units is first decoded. A transform is then determined for each transform unit of said block responsive to said type of split. Finally, decoded transform coefficients of said transform units are inverse transformed using the determined transforms.

Abstract: A block of video data is split and coded using existing transform sizes through one of several embodiments. In one embodiment, the block is split in alternate dimensions, depending on the block size. In another embodiment, the video block can be coded after splitting the block into at least two rectangular sub-blocks using horizontal or vertical divisions. Successive divisions using asymmetric splitting are forbidden if an equivalent split can be attained using only symmetrical splitting, and only one succession of divisions is permitted when there are other successions of asymmetric splitting that result in the identical sub-blocks. In another embodiment, a video block is split using successive splits, but the second type of split is dependent on the first type of split. Methods, apparatus, and signal embodiments are provided for encoding and decoding.

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus includes determining a splitting structure of a current block composed of chroma components, determining a splitting type of the current block based on the splitting structure, obtaining a plurality of lower-layer blocks by splitting the current block based on the splitting type, and decoding the lower-layer blocks based on a prediction mode of the lower-layer blocks.

Abstract: A transmitter for communication-less bistatic ranging includes a photon emitter configured to emit a plurality of photons at particular times in a pointing direction, and a processor configured to identify a particular sub-code of a plurality of sub-codes based on a dynamic state of the transmitter, each one of the plurality of sub-codes including a portion of a long optimal ranging code, generate a plurality of encoded pulse timings by dithering pulse timings from a nominal repetition frequency based on the particular sub-code, and control the photon emitter to emit the plurality of photons at the plurality of encoded pulse timings.

Abstract: Techniques for implementing video processing techniques are described. In one example implementation, a method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a modified motion vector set; and performing the conversion based on the modified motion vector set. Due to the current block satisfying a condition, the modified motion vector set is a modified version of a motion vector set associated with the current block.

Abstract: A surveillance system for detecting an object within a monitored infrastructure and to a hybrid 3D surveying device, wherein a LiDAR device is configured that scanning is carried out with respect to two essentially orthogonal axes and wherein the LiDAR device comprises a cover mounted on the base, such that the base and the cover form an enclosure that encloses all moving parts of the LiDAR device, wherein the cover is configured to be opaque for visible light and translucent for the wavelength range of the LiDAR transmission radiation. The system further comprises a computing unit configured for processing the LiDAR measurement data to generate a 3D point cloud of the monitored infrastructure, and an object detector configured for classification of the object based on the 3D point cloud.

Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. The processing circuitry decodes prediction information of a current block from a coded video bitstream. The prediction information is indicative of a coding mode that codes the current block based on reconstructed samples in a same picture as the current block. The processing circuitry determines a candidate vector that is used to reconstruct at least a portion of a block with a predetermined spatial relationship to the current block and then determines, from a candidate list that includes the candidate vector, a displacement vector for reconstructing at least a portion of the current block. Further, the processing circuitry reconstructs at least the portion of the current block based on the displacement vector.

Abstract: Scopes such as medical imaging camera head devices and methods are provided using light captured by an endoscope system or other medical scope or borescope. At least one polarizing optical element manipulates the polarization properties of image light. The manipulated image light is focused on an image sensor including polarizers for each pixel. Multiple images are produced based sets of pixels having the same orientation of polarizer. The resulting images are combined with high dynamic range techniques.

Abstract: Provided are embodiments for a system and method for performing real-time detection for mapping. The embodiments include one or more processors, a scanner, and a mobile computing device removably coupled to the 2D scanner where the mobile computing device having a display. Embodiments include collecting scan data of an environment to generate a first map and identifying lines from the collected scan data corresponding to a surface of a structure. Embodiments also include grouping the identified lines into buckets based at least in part on a characteristic of the identified lines and combining the identified lines in each bucket. Embodiments also include optimizing the first map to generate a second map and displaying the second map on the display.

Abstract: A video surveillance system includes a plurality of video surveillance cameras each for producing a corresponding video stream, a server configured to receive and store the video streams, and a first control room having a video wall. The video wall may be operatively coupled to the server and may be configured to concurrently display two or more of the video streams from two or more of the plurality of video surveillance cameras in a first arrangement. The video surveillance system may further include a remote virtual reality headset with a display and a virtual reality controller operatively coupled to the virtual reality headset and the server. The virtual reality controller may be configured to receive the same two or more video streams that are displayed on the video wall in the first control room and display them in the virtual reality headset.

Abstract: An encoder includes: circuitry; and memory coupled to the circuitry. The circuitry, in operation, stores a first parameter into a bitstream, the first parameter indicating, as a prediction mode, one of (i) a multiple prediction mode in which a prediction image is generated by overlapping an inter prediction image of a current block and an intra prediction image of the current block and (ii) one of a plurality of prediction modes including a non-rectangular mode in which a prediction image is generated for each non-rectangular partition in the current block, and encodes the current block according to the prediction mode.

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may comprise obtaining a current block by splitting an image, determining prediction mode characteristic information based on encoding information of the current block, determining a prediction mode type of a lower-layer block split from the current block based on the prediction mode characteristic information, obtaining the lower-layer block by splitting the current block, and decoding the lower-layer block based on the determined prediction mode type of the lower-layer block. The prediction mode characteristic information may be determined based on a color format of the current block.

Abstract: A method of video processing is described. The method includes making a first determination, for a chroma block of a video, whether a non-normal chroma intra prediction mode is applied to the chroma block of a video; making a second determination, for a luma block corresponding to the chroma block, that a luma intra prediction mode is applied to the luma block; making a third determination that a transform set or a transform matrix is applied to the chroma block based on the luma intra prediction mode; and performing a conversion between the video and a coded representation of the video according to the third determination, and wherein the non-normal chroma intra prediction mode comprises coding the chroma block without using extrapolated neighboring pixel values along a chroma prediction direction.

Abstract: Systems and methods for determining disparity between two images are disclosed. Such systems and methods include obtaining a first raw pixel image of a scene from a first viewpoint, obtaining a second raw pixel image of the scene from a second viewpoint (e.g.

Abstract: An example device for decoding video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: determine that a transform block of video data has a size of 8×8 coefficients and that the transform block is transformed using a low-frequency non-separable transform (LFNST); decode at least nine non-zero transform coefficients of the transform block; inverse transform the transform block using an inverse LFNST to reproduce a residual block corresponding to the transform block; and reconstruct a block of the video data using the residual block.

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: receiving a bitstream containing at least one of segmentation information of a current picture and prediction information for a current block included in the current picture; deriving a first segmentation structure of the current picture, which is based on multiple tiles, on the basis of the segmentation information of the current picture including at least one of information of the number of width-parsing columns, information of the last width, information of the number of height-parsing rows, and information of the last height; deriving a block predicted for the current block, on the basis of the prediction information for the current block contained in one of the multiple tiles; and generating reconstruction samples for the current block on the basis of the predicted block.

Abstract: An apparatus configured to encode or decode video data that includes a reference picture memory configured to store a plurality of reconstructed samples associated with a first row of a first block of video data and at least one processor, in communication with the reference picture memory, that is configured to generate a plurality of predicted samples associated with a second row of a second block based on a cascading technique where the cascading technique includes utilization of an angle associated with a first angular intra-prediction mode to generate the plurality of predicted samples associated with the second row of the second block and to encode or decode the second block based on the plurality of predicted samples associated with the second row.