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59results about How to "Reduce bit overhead" patented technology

Intra-frame prediction method, video coding method, computer equipment and storage device

The invention discloses an intra-frame prediction method, a video coding method, computer equipment and a storage device. The intra-frame prediction method comprises the steps of obtaining a search template of a current block; searching a reference pixel area by adopting a search template, wherein the reference pixel area is an encoded pixel area in the current frame; respectively obtaining the matching degrees of the search template and the blocks covered by the search template in the reference pixel area; determining a minimum value in the matching degree to obtain an image block corresponding to the minimum value as an optimal matching block of the current block; and if the rate distortion cost corresponding to the optimal matching block is minimum, enabling the block matching mode corresponding to the optimal matching block to be the optimal prediction mode. By adopting the search template to search the reference pixel region, the intra-frame prediction method provided by the invention can obtain the optimal matching block by combining the image content, the brightness and the chrominance signal of the current block, so that the bit overhead of subsequent residual coding is relatively low, the compression rate of intra-frame coding is improved, and the spatial redundancy can be further removed.
Owner:ZHEJIANG DAHUA TECH CO LTD

Intelligent inter-viewpoint coding method

The invention discloses an intelligent inter-viewpoint coding method. The method comprises the following steps: respectively obtaining a first prediction block obtained based on an adjacent block parallax vector mode and a second prediction block obtained based on a traditional parallax compensation prediction mode; constructing a residual learning convolutional neural network structure with a variable convolution kernel size; taking a result obtained by cascading the brightness component channels of the two prediction blocks as the input of a convolutional neural network, wherein the output of the network is an enhanced prediction block of the original image block; training four different network models according to the four different quantization parameters; extracting brightness components of the first prediction block and the second prediction block respectively, performing channel cascading, and calling a corresponding network model for a result after cascading according to the size of the current coding block and the quantization parameter value; and finally, calculating the rate distortion cost of the enhanced prediction block, comparing the rate distortion cost with the optimal mode cost of the current coding block; if the rate distortion cost is less than the optimal mode cost, selecting the method as the optimal coding mode, coding the corresponding mark, and transmitting the coded mark to a decoding end.
Owner:TIANJIN UNIV

Reference signal indication method, network device and terminal device

The invention discloses a reference signal indication method, a network device and a terminal device. The method comprises the steps of configuring a target reference signal pattern employed in a nexttransmission time interval for the terminal device; not sending reference signal indication information to the terminal device when the target reference signal pattern is a default reference signal pattern, or not sending the reference signal indication information to the terminal device when the target reference signal pattern is the same as the reference signal pattern indicated by the reference signal indication information received last time, wherein the target reference signal pattern is the reference signal pattern selected from a plurality of preset reference signal patterns. Accordingto the method, the network device and the terminal device, when the default reference signal pattern is employed in the next transmission time interval or the reference signal pattern the same as thereference signal pattern employed in a previous transmission time interval is employed, the reference signal indication information is not sent, on the premise of ensuring that the reference signal pattern is indicated accurately, the sending times of the system information is reduced, the bit cost of the system information is reduced, and a business transmission rate is improved.
Owner:维沃软件技术有限公司

Encoding and decoding method, device and equipment appartus of intra-frame prediction mode and readable storage medium

The invention relates to a an encoding and decoding method, device and appartus of an intra-frame prediction mode and a readable storage mediumcoding and decoding method and device for an intra-frameprediction mode, equipment and a readable storage medium. The coding method of the intra-frame prediction mode comprises the following steps: constructing a most probable prediction mode MPM candidatelist of a current data block according to an intra-frame prediction mode adopted by a plurality of adjacent data blocks of the current data block; wherein each intra-frame prediction mode in the MPMcandidate list is ranked according to the correlation between each adjacent data block and the current data block from large to small; determining an MPM set of the current data block according to theMPM candidate list of the current data block; obtaining a target intra-frame prediction mode of the current data block according to the MPM set of the current data block; and if the target intra-frame prediction mode exists in the MPM set of the current data block, encoding the target intra-frame prediction mode according to the sequence of the target intra-frame prediction mode in the MPM set, and determining a code word of the target intra-frame prediction mode. According to the method, the cCode word length of the target intra-frame prediction mode of the current data block is reduced, andthe bit cost is reduced.
Owner:ZHEJIANG DAHUA TECH CO LTD

A reference signal indication method, network equipment and terminal equipment

The invention discloses a reference signal indication method, network equipment and terminal equipment. The method comprises: configuring a target reference signal pattern used in the next transmission time interval for the terminal equipment; when the target reference signal pattern is a default reference signal pattern When the reference signal indication information is not sent to the terminal equipment; or, when the target reference signal pattern is the same as the reference signal pattern indicated by the reference signal indication information received last time, the reference signal indication information is not sent to the terminal equipment; the target reference signal The signal pattern is one selected from a plurality of preset reference signal patterns. When using the default reference signal pattern in the next transmission time interval or using the same reference signal pattern as in the previous transmission time interval, the present invention does not send reference signal indication information, and on the premise of ensuring that the reference signal pattern is accurately indicated, the system is reduced. The number of times information is sent, thereby saving the bit overhead of system information and improving the service transmission rate.
Owner:维沃软件技术有限公司
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