Abstract: Provided herein are methods, systems and computer program products for detecting tampering, comprising a sealing process and a seal verification process. The sealing process comprising analyzing a seal applied to seal an object as a tamper evident element, recording one or more manufacturing defects of the seal identified based on the analysis, each of the one or more manufacturing defects comprising one or more non-reproducible deviations from seal generation instructions used to produce the seal, and generating a signature comprising the one or more manufacturing defects. The seal verification process comprising obtaining the signature, analyzing the seal sealing the object, and determining whether the object is tampered based on a comparison between the analyzed seal and the signature.

Abstract: A communications system may include a satellite and user equipment (UE) devices. When the UE devices have uplink (UL) packets to transmit, each UE device may randomly select a time slot within a finite time window associated with a time reference of the satellite. The UE device may identify a path length between itself and the satellite and may generate a timing advance based on the path length, the time reference, and the time slot. The satellite may begin to receive the UL packets within the time window and may search received signals over the time window to identify the UL packets. The satellite may recover data payloads from the identified UL packets and may pass the recovered data payloads up a protocol stack. By limiting the search to the time window, the satellite may correctly distinguish the UL packets while using a minimal amount of processing resources.

Abstract: An image acquisition method includes acquiring a first image based on a first photographing parameter, where the first image includes a first to-be-detected item, acquiring a second image based on a second photographing parameter, where the second image includes a second to-be-detected item, and determining, based on the first image and the second image, a detection result corresponding to the first to-be-detected item and a detection result corresponding to the second to-be-detected item.

Abstract: Provided is a transform coefficient scan method including: determining a reference transform block for a decoding target block; deriving a scanning map of the decoding target block using scanning information of the reference transform block; and performing inverse scanning on a transform coefficient of the decoding target block using the derived scanning map. According to the present invention, picture encoding/decoding efficiency may be improved.

Abstract: Executable code causes a processor to segment a first frame to determine a background portion of the first frame, and segment a second frame to determine a background portion of the second frame. The executable code causes the processor to compare the background portion of the first frame to the background portion of the second frame to determine a difference between the first frame and the second frame. The executable code also causes the processor to alter the background portion of the second frame responsive to the difference. The executable code causes the processor to display the altered second frame on a display.

Abstract: A method comprises fetching, by fetch circuitry, an encoded butterfly instruction comprising an opcode, a first source identifier, a second source identifier, a third source identifier, and two destination identifiers, decoding, by decode circuitry, the decoded butterfly instruction to generate a decoded butterfly instruction, and executing, by execution circuitry, the decoded butterfly instruction to retrieve operands representing a first input polynomial-coefficient from the first source, a second input polynomial-coefficient from the second source, and a primitive nth root of unity from the third source, perform, in an atomic fashion, a butterfly operation to generate a first output polynomial-coefficient and a second output polynomial-coefficient, and store the first output coefficient and the second output coefficient in a register file accessible to the execution circuitry.

Abstract: An image compression device of an endoscope apparatus includes a compression processing control unit, a storage unit, a first compression parameter generating unit, a second compression parameter generating unit and a compression parameter determining unit. The first compression parameter generating unit generates a first tentative compression parameter based on a transferable data amount. The second compression parameter generating unit generates a second tentative compression parameter based on a storage capacity of the storage unit. The compression parameter determining unit compares the first tentative compression parameter and the second tentative compression parameter to select a parameter with which a data amount after compression becomes smaller as a selected parameter. The compression processing control unit updates a compression parameter with the selected parameter and performs compression processing using the updated compression parameter.

Abstract: A system may be configured to reliably identify, track, and collect data on a person of interest. In some aspects, the system may detect a facial representation within an image, generate a bounding box corresponding to the facial representation, determine an enhanced facial representation based at least in part on the bounding box and an image enhancement pipeline, and extract a plurality of facial features from the enhanced facial representation. Further, the system may determine quality information based on the plurality of facial features, determine that the quality information is greater than a threshold, and store the plurality of facial features in a data structure. In some aspects, the facial features may be used to identify red shoppers and green shoppers in a controlled environment.

Abstract: The present disclosure relates to methods and devices for graphics processing including an apparatus, e.g., a GPU. The apparatus may process at least one frame including frame content associated with a grid including a plurality of grid sections, each of a plurality of portions of the frame content being aligned with at least a portion of at least one of the plurality of grid sections. The apparatus may also shift the frame content with respect to the grid, such that at least one portion of the plurality of portions of the frame content is aligned with at least a portion of at least one distinct grid section of the plurality of grid sections. Additionally, the apparatus may store the shifted frame content including the at least one portion of the frame content that is aligned with at least a portion of the at least one distinct grid section.

Abstract: The present invention relates to a method for signaling image information and to a decoding method using same. The method for signaling image information according to the present invention comprises: a step of performing inter-prediction for a current picture; and a step of signaling information including the result of said inter-prediction and reference picture information indicating reference pictures usable in said inter prediction, wherein said reference picture information contains pieces of picture order count (POC) information of said usable reference pictures. The POC information of said usable reference pictures in said reference picture information is configured such that POCs for the pictures existing before said current picture in terms of a POC sequence are located at the front, and POCs for the pictures existing after said current picture in terms of a POC sequence are located following the POCs located at the front.

Abstract: Disclosed herein are systems and methods for detecting when geometry shaders output a constant amount of data and writing the data into an output stream buffer. In one aspect, an exemplary method comprises gathering information about a number of block executions associated with the received data, analyzing the gathered information to determine whether constant or variable amount of data is generated for at least one of: a stream output or a rasterization, and when the constant amount of data is generated for the stream output, writing the generated data directly into a stream output buffer, and when the constant amount of data is generated for the rasterization, writing the generated data into a rasterization buffer either directly or through a use of an intermediate index buffer.

Abstract: A method for decoding an encoded video bit stream in a video decoder is provided that includes determining a scan pattern type for a transform block to be decoded, decoding a column position X and a row position Y of a last non-zero coefficient in the transform block from the encoded video bit stream, selecting a column-row inverse transform order when the scan pattern type is a first type, selecting a row-column inverse transform order when the scan pattern type is a second type, and performing one dimensional (1D) inverse discrete cosine transformation (IDCT) computations according to the selected transform order to inversely transform the transform block to generate a residual block.

Abstract: According to an aspect, a video encoder selects a block of intermediate size from a set of block sizes for intra-prediction estimation for encoding a video signal. A set of neighbouring blocks with the intermediate size are tested for combining. If the set of neighbouring blocks are determined to be combinable, the video encoder selects a larger block size formed by the tested neighbouring blocks for encoding. On the other hand, if the set of neighbouring blocks are determined to be not combinable, the video encoder selects a smaller block size from the set of tested neighbouring blocks for prediction. According to another aspect, the best mode for intra-prediction is determined by first intra-predicting a block with intermediate modes in a set of modes. Then the intra-predictions are performed for the neighbouring modes of at least one intermediate mode.

Abstract: Provided is a transform coefficient scan method including: determining a reference transform block for a decoding target block; deriving a scanning map of the decoding target block using scanning information of the reference transform block; and performing inverse scanning on a transform coefficient of the decoding target block using the derived scanning map. According to the present invention, picture encoding/decoding efficiency may be improved.

Abstract: In an aspect, a system for dynamic data injection is presented. A system includes a computing device. A computing device is configured to receive at least a digital media file. A digital media file includes at least a segment comprising a plurality of display quanta. A computing device is configured to select a portion of at least a segment of at least a digital media file as a function of a randomization engine. A computing device is configured to encode identifying data in a selected portion of at least a segment. Encoding includes modifying at least a display quanta of a plurality of display quanta of a selected portion of at least a segment. A computing device is configured to display at least a segment to a user.

Abstract: The present application describes a system and method for extending a range of an image detection and classification system that is associated with various image capture devices. The range of the image detection and classification system is extended using one or more of an optical zoom on an area of interest, a digital zoom on the area of interest and a crop operation on the area of interest.

Abstract: Disclosed is a data transmission system that transmits data by using a relay. The relay selects a transmission terminal from among a plurality of terminals accessing a base station. A base station transmits base station data to the relay during a first time slot, and the transmission terminal transmits terminal data to the relay. The relay transmits terminal data to the base station during a second time slot, and transmits base station data to the transmission terminal.

Abstract: A method, includes: providing at least one set of data; composing a data stream including compressed data from the at least one set of data, the at least one set of data having embedded therein a respective counter indicative of the at least one set of data, the respective counter being losslessly encoded into the compressed data; transmitting the data stream over a transmission channel; receiving the data stream; and recovering, from the data stream, the respective counter.

Abstract: Methods and systems provided. A system may include at least one camera at a camera location, wherein the at least one camera is configured to record one or more videos and one or more images. The system may further include a server. The server may be configure to download at least one image of the one or more images captured at the camera location. The server may also be configured to display the one or more downloaded images. Further, the server may also be configured to, in response to a user selecting a displayed image of the one or more displayed images, download a specific portion of the previously recorded one or more videos captured at the camera location.

Abstract: The loss of image quality during compression is controlled using a sequence of quality control metrics. The sequence of quality control metrics is selected for quantizing transform coefficients within an area of the image based on an error level definition. Candidate bit costs are then determined by quantizing the transform coefficients according to the error level definition or a modified error level and the sequence of quality control metrics. Where the candidate bit cost resulting from using the modified error level is lower than the candidate bit cost resulting from using the error level definition, the transform coefficients are quantized according to the modified error level and the sequence of quality control metrics. Otherwise, the transform coefficients are quantized based on the error level definition and according to the sequence of quality control metrics.

Abstract: A processor-implemented method includes: determining a first multiplication matrix and a second multiplication matrix, based on an input multiplicand matrix and an input multiplier matrix that are generated from an input signal; determining a matrix to be restored, based on the first multiplication matrix and the second multiplication matrix; determining a matrix restoration constraint value, based on the matrix to be restored; determining a multiplication result of the input multiplicand matrix and the input multiplier matrix, based on the matrix restoration constraint value and the matrix to be restored; and analyzing the input signal based on the multiplication result.

Abstract: Methods of encoding a video stream in a video encoder and decoding an encoded video stream in a video decoder using a low complexity large transform are provided. An encoding method includes receiving an n×n residual block in a transform component of the video encoder, and transforming the n×n residual block using an n×n transform to generate an n×n transform coefficient block, wherein the n×n transform is based on (n/m*n/m) m×m Hadamard transforms and (m*m) (n/m)×(n/m) discrete cosign transforms, wherein m<n. A decoding method includes receiving an n×n transform coefficient block in an inverse transform component of the video decoder, and applying an n×n inverse transform to the n×n transform coefficient block to reconstruct an n×n residual block, wherein the n×n inverse transform is based on (n/m*n/m) m×m Hadamard transforms and (m*m) (n/m)×(n/m) inverse discrete cosign transforms, wherein m<n.

Abstract: Techniques are disclosed for compressing data. The techniques include identifying, in data to be compressed, a first set of values, wherein the first set of values include a first number of two or more consecutive identical non-zero values; including, in compressed data, a first control value indicating the first number of non-zero values and a first data item corresponding to the consecutive identical non-zero values; identifying, in the data to be compressed, a second value having an exponent value included in a defined set of exponent values; including, in the compressed data, a second control value indicating the exponent value and a second data item corresponding to a portion of the second value other than the exponent value; and including, in the compressed data, a third control value indicating a third set of one or more consecutive zero values in the data to be compressed.

Abstract: Methods, systems and devices for using flexible and efficient partitioning techniques are described. An exemplary method for visual media decoding includes applying, to a current visual media block, a partitioning process that splits the current visual media block into exactly four sub-blocks including at least one sub-block that has a size different from half of a width of the current visual media block times half of a height of the current visual media block, decoding, based on a bitstream representation, the four sub-blocks, and decoding, based on the four sub-blocks and the partitioning process, the current visual media block.

Abstract: A video decoding method includes obtaining an encoded bitstream of an original video content, and obtaining signaling information associated with the encoded bitstream. The signaling information includes at least a sequence parameter set (SPS), which includes a parameter bit_depth_luma_minus8, which specifies a bit depth of samples of a luma array and a value of a luma quantization parameter range offset; and a parameter bit_depth_chroma_minus8, which specifies a bit depth of samples of a chroma array and a value of a chroma quantization parameter range offset.

Abstract: Representative embodiments set forth techniques for managing advertisement auctions on a client device. The method can include the steps of (1) receiving, from a server device, a plurality of objects, where each object is associated with a respective digital asset, and each object includes, in association with the respective digital asset (i) a server-derived digital asset vector, (ii) a server-derived predicted tap-through rate, and (iii) a bid amount. In turn, and for each object of the plurality of objects, the client device (2) generates a respective estimated cost per impression for the object based on the information provided by the server device as well as information derived by the client device. Subsequently, the client device (3) identifies, among the plurality of objects, the object associated with the highest respective estimated cost per impression, and (4) causes an advertisement for the respective digital asset associated with the identified object to be displayed.

Abstract: Embodiments of the present disclosure provide an intra-frame prediction method and apparatus, and a non-transitory computer-readable storage medium. In the method, pixel main directions of reference coded blocks that spatially neighbor a target to-be-coded block are determined. For each of the pixel main directions, a search is performed for an intra-frame prediction direction that is within a set distance value of the respective pixel main direction. Candidate intra-frame prediction directions are formed at least according to the intra-frame prediction directions. Prediction and coding are performed on the target to-be-coded block according to the candidate intra-frame prediction directions. Further, a target intra-frame prediction direction in the candidate intra-frame prediction directions is determined according to results of the prediction and coding on the target to-be-coded block according to the candidate intra-frame prediction directions.

Abstract: A method for decoding a data signal representative of at least one image cut into blocks. The method includes, for a current block to be decoded: transforming a residual data block obtained from the data signal; determining a permutation-transformation pair including a transformation mathematical operation and a permutation mathematical operation, the transformation mathematical operation and the permutation mathematical operation belonging to respectively a plurality of permutation operations and a plurality of transformation operations; applying the determined transformation mathematical operation to the data of the residual data block to produce transformed data; applying the determined permutation mathematical operation to the transformed data to produce permuted data, the determined permutation mathematical operation being an operation of transposing the transformed data; and using the permuted data to reconstruct the current block by a predictive decoding.

Abstract: Techniques are described for history-based candidate list operations in video coding for determining motion information for a current block. In one example, a device for decoding video data includes a memory configured to store a history-based candidate list and a video decoder. The video decoder is configured to construct the history-based candidate list by storing, in the memory, motion information of reconstructed blocks into the history-based candidate list as candidates of the history-based candidate list, identify a subset of candidates of the history-based candidate list, generate a candidate list based on the identified subset of candidates of the history-based candidate list, and reconstruct a current block based on the generated candidate list.

Abstract: Disclosed in the present invention is a point cloud attribution compression method based on deleting 0 elements in a quantisation matrix, including optimizing a traversal sequence for a quantisation matrix and deleting the 0 elements at the end of the data stream. The present invention may use seven types of traversal sequences at the encoding end of the point cloud attribute compression, such that the distribution of the 0 elements in the data stream may be more concentrated at the end thereof. The 0 elements at the end of the data stream may be deleted, removing redundant information and reducing the quantity of data to be entropy encoded. At the decoding end, the point cloud geometric information may be incorporated to supplement the deleted 0 elements and the quantisation matrix may be restored according to the traversal sequence, thereby improving compression performance without introducing new errors.

Abstract: In various embodiments, an encoding optimization application encodes a source video sequence. The encoding optimization application partitions a source video sequence associated with a media title into multiple subsequences that include a first subsequence and a second subsequence. The encoding optimization application then generates a first encoded subsequence based on the first subsequence and a first resolution. The encoding optimization application generates a second encoded subsequence based on the second subsequence and a second resolution. Notably, the second resolution is higher than the first resolution. The encoding optimization application then aggregates the first encoded subsequence and the second encoded subsequence to generate an encoded video sequence. At least a portion of the encoded video sequence is subsequently streamed to an endpoint device during a playback of the media title.

Abstract: An encoder includes circuitry and memory. The circuitry, using the memory: calculates at least one difference value between a plurality of pixels in a first block of a current image; calculates a denominator value used for a second block, using the difference value, the denominator value being used for a plurality of sub-blocks of the first block, the second block being one of the plurality of sub-blocks; determines a shift value, using the denominator value; calculates a first value and a second value, using at least a shift operation with the shift value; determines a prediction sample for the second block, using at least the first value and the second value; and encodes the second block, using at least the prediction sample.

Abstract: A method and apparatus for alternative transforms in a video coding system according to a control flag are disclosed. In one embodiment, the control flag for the current PU is determined. If the control flag is on, a first transform is applied to each current TU (transform unit) at an encoder side or an inverse transform of the first transform is applied to each current TU at a decoder side if the current TU has a first boundary type. Furthermore, a second transform is used for each current TU if the current TU has a second boundary type. The first transform is different from the second transform. On the other hand, if the control flag is off, a selected transform is used for each current TU.

Abstract: A technique to parameterize the quantization scheme of the attribute coding of point cloud compression algorithms is described herein. Based on fixed-point arithmetic, the algorithm calculates the quantization step size (QS) in fixed-point notation, given a user-input quantization parameter (QP).

Abstract: A frequency transformation determination unit determines whether a plurality of adjacent transformation target regions with the partition boundary interposed therebetween are integrated or not. A transformation coefficient generation unit generates, by applying one frequency transformation, a transformation coefficient for the transformation target regions where the frequency transformation determination unit determined to integrate.

Abstract: Embodiments of the present application relate to a prediction mode selection method performed at a video encoding device, including: acquiring a first optimal intra-frame prediction mode of a downsampled unit obtained by downsampling an image frame to which a target prediction unit belongs and then dividing the downsampled image frame, and the first optimal intra-frame prediction mode obtained by performing precoding analysis on the downsampled unit; adding a candidate intra-frame prediction mode to a candidate mode set according to the first optimal intra-frame prediction mode; adding a candidate intra-frame prediction mode to the candidate mode set according to a second optimal intra-frame prediction mode of an adjacent PU corresponding to the target PU; and determining an optimal intra-frame prediction mode of a current PU according to prediction residuals and encoding cost values corresponding to the candidate intra-frame prediction modes in the candidate mode set.

Abstract: A scan order for encoding or decoding coefficients of a transform block is selected on a transform block-level. A set of candidate scan orders is processed by identifying end of block positions within the transform block for each of the candidate scan orders. Cost values are determined for each of the candidate scan orders to reflect a number of the coefficients of the transform block that are located before the respective end of block positions. In particular, a cost value for a candidate scan order reflects the number of zero-value coefficients located before the end of block position for that candidate scan order. One of the candidate scan orders is then selected based on those cost values. The selected scan order is used to scan the coefficients in the transform block, such as for encoding those coefficients to a bitstream or for decoding those coefficients to an output video stream.

Abstract: A chip for detecting a synchronization signal generated based on one of a plurality of sequences, which is generated by a sequence generator, the chip including a memory, and a processor connected to the memory may be provided. The processor may be configured to receive the synchronization signal, perform first descrambling the received synchronization signal for a first sequence from among the plurality of sequences by multiplying the received synchronization signal by the first sequence, and perform second descrambling the received synchronization signal for a second sequence, which is a complex conjugate of the first sequence, from among the plurality of sequences of the received synchronization signal by changing a sign of at least one element of a descrambled sequence of the first sequence.

Abstract: A method and system of detecting image tampering, an electronic device and a storage medium. The method includes: A. carrying out block segmentation on a to-be-detected image to segment the to-be-detected image into a plurality of image small fragments, and extracting initial tampering detection features from all the image small fragments; B. encoding the extracted initial tampering detection features with a predetermined encoder to generate complicated tampering features, and determining a tampering detection result corresponding to the to-be-detected image according to the generated complicated tampering features, wherein the tampering detection result includes an image-tampered result and an image-not-tampered result. The disclosure realizes accurate detection for different types and formats of image tampering.

Abstract: Provided are a signal transforming method and a signal transforming device. For example, the signal transforming method includes determining a minimum-value matrix and a maximum-value matrix with respect to elements of a matrix used in frequency transformation, wherein the minimum-value matrix is configured of elements of minimum value and the maximum-value matrix is configured of elements of maximum value; determining a maximum threshold value of a result value of a function indicating at least one selected from transform distortion, normalization, and orthogonality of the matrix; determining a transform matrix configured of elements that are greater than the elements of the minimum-value matrix and less than the elements of the maximum-value matrix at respective positions of the matrix, and in which the result value of the function is less than the maximum threshold value; and transforming an input signal by using the determined transform matrix.

Abstract: In a freespace detection apparatus and method, a camera provides at least first and second image data captured at different points in time. A motion vector of the camera is detected and assigned to the image data. The image data is transformed with respect to a predetermined, configurable image plane, and motion compensation of the transformed image data is performed. Difference image data between the motion compensated transformed image data and the transformed second image data is computed, and an object is identified in the computed difference image data.

Abstract: Updating graphical user interface elements. A method includes accessing a graphical user interface which includes an initial view including graphical elements. Each of the following are performed (in order) if determined to be applicable: (1) updating in the graphical user interface any pan elements that are outside of the initial view; (2) animating any changes in axes of the graphical user interface to set the stage for data modifications; (3) performing any data element animations in the graphical user interface, including any moves, any additions, any removals and any changes for all updates except those already added in when updating any pan elements that are outside of the initial view and pan element removals that will not be visible in a final view; (4) animating any changes in the axes to the final view; and (5) updating any remaining elements that are now out of view.

Abstract: An image registration server which can communicate with a client device, includes an image data receiving device for receiving image data transmitted from the client device, an image data generation device for generating image data representing the same image as an image represented by the image data received by the image data receiving device and having a different form of representation therefrom, and an image data storage device for storing the image data generated by the image data generation device so as to be accessible.

Abstract: The present invention relates to a method of encoding a video data signal for use with a multi-view rendering device, a method of decoding the video data signal, the video data signal, an encoder of the video data signal, a decoder of the video data signal, a computer program product comprising instructions for encoding the video data signal and a computer program product comprising instructions for decoding a video data signal. The method of encoding provides (401) a first image (10) of a scene associated with a first viewpoint, a depth map (20) associated with the first image, metadata (30) for use in depth map processing or rendering one or more views for further viewpoints by the multi-view rendering device, and generates (404) the video data signal. The video data signal comprises video frames partitioned in sub-images comprising a sub-image based on the first image and a depth sub-image based on the depth map, and metadata encoded in a color component of the depth sub-image.

Abstract: The invention relates to a method and device for quantising the floating value of a pixel of an image by rounding either to a lesser whole number, to a greater whole number, or to the whole number closest to this floating value. The method is characterised in that the selection of rounding this floating value is determined based on a test value.

Abstract: The quantization unit calculates the number of bits of location information determined based on the location of a coefficient level to be significant first in order of transmission and included in the image block, calculates the number of value information bits of a coefficient level to be significant, and sets a coefficient level to be significant in which the number of location information bits and the number of value information bits meet a predetermined condition to 0.

Abstract: An apparatus and a method. The apparatus includes an image representation unit configured to receive a sequence of frames generated from events sensed by a dynamic vision sensor (DVS) and generate a confidence map from non-noise events; and an image denoising unit connected to the image representation unit and configured to denoise an image in a spatio-temporal domain. The method includes receiving, by an image representation unit, a sequence of frames generated from events sensed by a DVS, and generating a confidence map from non-noise events; and denoising, by an image denoising unit connected to the image representation unit, images formed from the frames in a spatio-temporal domain.

Abstract: A method and a non-transitory computer readable medium for decompressing an image including one or more regions are presented. A region of the image is selected to be decoded. The region and metadata associated with the region are decoded, the metadata including transformation and quantization settings used to compress the region. A reconstruction transformation is applied to the region using the transformation and quantization settings.

Abstract: A method of deblocking an input signal is disclosed. The method generally includes the steps of (A) calculating a plurality of transform coefficients corresponding to each of a plurality of blocks in the input signal at baseband, (B) calculating a plurality of quantization parameters based on the transform coefficients, at least one of the quantization parameters corresponding to each respective one of the blocks and (C) generating an output signal by deblocking the input signal based on the quantization parameters.

Abstract: A method determines a first unit of video in a base layer and analyzes a portion of pixels for the first unit of video in the base layer. A scan pattern for a second unit of video in an enhancement layer is determined based on the analyzing of the portion of the pixels in the base layer. The enhancement layer is useable to enhance the base layer. The method then performs a scan of the second unit of video in the selected scan pattern for a transform process in the enhancement layer.