Realtek Semiconductor Inc.

Soochow University

Rong Zhang

Wei Li

Chi-Wang Chai

Wu-Jun Chen

Wei-min Zeng

Weimin Zeng

Wujun Chen

Wei-Min Zeng

Yihuai Wang

Lianmin Shi

Jin Wang

Qingxi He

Qing-Xi He

Xiao-Hua Xi

Tingting Xu

The present invention discloses an image decoding method. Error report information related to an error block in an N-th image frame generated according to an inter-frame coding technology is received by an image encoding apparatus when the image decoding apparatus receives a block of an N+P−1-th image frame. The N+P-th image frame is encoded according to the inter-frame coding technology. Blocks in the N-th image frame before the error block are decoded according to the inter-frame coding technology. A panning motion vector of an N−1-th image frame serves as the motion vector information and the residue information is set to be zero to decode the blocks from the error block to the N+P−1-th image frame according to the inter-frame coding technology. The motion vector information and the residue information of the inter-frame coding blocks in the N+P-th image frame are retrieved to perform decoding according to the inter-frame coding technology.

Image decoding apparatus and method

The present invention discloses an image decoding method. Error report information related to an error block in an N-th image frame generated according to an inter-frame coding technology is received by an image encoding apparatus at a time spot that the image decoding apparatus receives a corresponding block of an N+P−1-th image frame and an N+P-th image frame is encoded according to an inter-frame coding technology. Blocks in the N-th image frame before the occurrence of the error block are decoded according to the inter-frame coding technology. Motion vector information and residue information are set to be zero to decode the blocks from the error block to the N+P−1-th image frame according to the inter-frame coding technology. The motion vector information and the residue information of the inter-frame coding blocks in the N+P-th image frame are retrieved to decode the blocks therein according to the inter-frame coding technology.

A coding algorithm encodes consecutive frames of a video sequence and realizes distributed Gradual Decoding Refresh. The consecutive frames include a first frame, a second frame, and a third frame, and each frame is composed of (X+Y+Z) columns of coding tree units. The algorithm includes: coding X columns of the first frame in an intra coding manner and coding the other columns of the first frame in an inter coding manner and/or the intra coding manner; coding X columns of the second frame in the inter coding manner, coding Y columns of the second frame in the intra coding manner, and coding Z columns of the second frame in the inter and/or intra coding manner(s); and coding X and Y columns of the third frame in the inter coding manner, and coding Z columns of the third frame in the intra coding manner. The X/Y/Z columns (intra-coded columns) are inconsecutive.

Coding algorithm for realizing distributed gradual decoding refresh

An STL model slicing method includes: reading and loading an STL model; obtaining a first slice plane; according to a first set thickness, making the first slice plane be horizontally tangential to an STL model to obtain a first profile curve, which is a profile curve of a tangent plane of the STL model and the first slice plane; determining whether the profile curve contains a physical portion of the STL model; if the profile curve contains the physical portion of the STL model, filling the physical portion with white to obtain a white portion; determining a non-physical portion in the profile curve according to the physical portion; filling the non-physical portion with black to form a mask of the tangent plane; and projecting the mask onto a liquid photosensitive resin by means of a first 3D printer, and then curing the white portion to be a first cured profile.

STL model slicing method and device

A loop filter utilized in an encoder includes a constrained directional enhancement filter and a decision circuit. The constrained directional enhancement filter is arranged to process multiple frames, wherein for a first frame in the multiple frames, the constrained directional enhancement filter determines a best filter strength of each block in the first frame in a first filter strength list, and determines a second filter strength list according to content of the first frame. The decision circuit is coupled to the constrained directional enhancement filter, and is arranged to record which index in the first filter strength list is the best filter strength corresponding to each block in the first frame, and provide the first filter strength list and the index corresponding to each block to an encoding circuit of the encoder as an output of the encoder.

Loop filter utilized in encoder and associated signal processing method

An encoder includes a frame level processing circuit, a coding tree unit (CTU) level processing circuit and an encoding circuit. The frame level processing circuit is arranged to calculate a bit number of a current frame according a target bitrate and a frame rate, and the frame level processing circuit is further arranged to calculate a quantization parameter of the current frame according to the bit number of the current frame and at least one parameter. The CTU level processing circuit is arranged to use an adaptive quantization mode to adjust the quantization parameter to generate an adjusted quantization parameter. The encoding circuit is arranged to encode the current frame to generate output data according to the adjusted quantization parameter.

Encoder using coding tree unit level adaptive quantization mode to adjust frame level quantization parameter and associated signal processing method

A bit rate control method includes the following operations: receiving a first target bit of a video to be coded; determining a second target bit for first coding tree units (CTUs) in CTUs of the video according to the first target bit; determining a fourth target bit of at least one fourth CTU in the CTUs according to an actual bit of at least one second CTU in the CTUs and a third target bit of at least one third CTU in the CTUs, in which the at least one second CTU is completely coded, the at least one third CTU is not completely coded, and a coding of the at least one fourth CTU is not started; and sequentially adjusting at least one coding parameter for coding the video according to the second target bit, the third target bit, and the fourth target bit.

Bit rate control method and video processing device

Disclosed is a deblocking filter level decision method applicable to an image encoder and used for determining deblocking filter levels of N image frames. The method includes: determining whether a current quantization parameter of a current frame of the N image frames is the same as a previous quantization parameter of any previous frame of the N image frames; if the current quantization parameter is different from the previous quantization parameter, looking up M current deblocking filter reference levels in an established table according to the current quantization parameter and then determining M current deblocking filter levels of the current frame according to the M current deblocking filter reference levels, respectively; and if the current quantization parameter is the same as the previous quantization parameter, determining the M current deblocking filter levels of the current frame according to M previous deblocking filter levels of the previous frame, respectively.

Growing community of inventors

Suzhou, China

Rong Zhang