Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
  • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
  • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
  • H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
  • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
  • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
  • H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
  • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Definitions

• the invention relates generally to video processing.
• the present invention relates to methods and apparatuses for residue transform depth representation for Y, U, and V components in High Efficiency Video Coding (HEVC).
• HEVC High Efficiency Video Coding
• HEVC is an advanced video coding system being developed under the Joint Collaborative Team on Video Coding (JCT-VC) group of video coding experts from ITU-T Study Group.
• JCT-VC Joint Collaborative Team on Video Coding
• the residue transform depth is shared between luma (Y) and chroma (U and V) components.
• a syntax element split_transform_flag is used to indicate the transform depth increase for all Y, U, and V components as shown in Fig. 1.
• the TU split flag and cbf flag coding is shown in Fig. 3.
• a syntax element max_transform_hierarchy_depth_inter is used to indicate the maximum transform depth in a sequence for all Y, U, and V components for inter case
• a syntax element max_transform_hierarchy_depth_intra is used to indicate the maximum transform depth in a sequence for all Y, U, and V components for intra case.
• three separate syntax elements split_transform_Y_flag, split_transform_U_flag, and split_transform_V_flag instead of one shared split_transform_flag, are used to indicate the transform depth increase for Y, U, and V components respectively as shown in Fig. 2.
• the TU split flag and cbf flag coding for Y component is shown in Fig. 4.
• the TU split flag and cbf flag coding for U or V component is shown in Fig. 5.
• Fig. 1 is a diagram illustrating the TU split in current HEVC.
• Fig. 2 is a diagram illustrating the TU split in the proposed method.
• Fig. 3 is a flowchart illustrating the coding of TU split flag and cbf flag in current HEVC.
• Fig. 4 is a flowchart illustrating the coding of TU split flag and cbf flag for Y component in the proposed method.
• Fig. 5 is a flowchart illustrating the coding of TU split flag and cbf flag for Y or V component in the proposed method.
• Y, U, and V components are not forced to have the same residual transform depth.
• three separate syntax elements split_transform_Y_flag, split_transform_U_flag, and split_transform_V_flag instead of one shared split_transform_flag, are used to indicate the transform depth increase for Y, U, and V components respectively.
• two separate syntax elements split_transform_luma_flag and split_transform_chroma_flag instead of one shared split_transform_flag are used to indicate the transform depth increase for luma and chroma components respectively.
• an embodiment of the present invention can be a circuit integrated into a video compression chip or program codes integrated into video compression software to perform the processing described herein.
• An embodiment of the present invention may also be program codes to be executed on a Digital Signal Processor (DSP) to perform the processing described herein.
• DSP Digital Signal Processor
• the invention may also involve a number of functions to be performed by a computer processor, a digital signal processor, a microprocessor, or field programmable gate array (FPGA).
• processors can be configured to perform particular tasks according to the invention, by executing machine-readable software code or firmware code that defines the particular methods embodied by the invention.
• the software code or firmware codes may be developed in different programming languages and different format or style.
• the software code may also be compiled for different target platform.
• different code formats, styles and languages of software codes and other means of configuring code to perform the tasks in accordance with the invention will not depart from the spirit and scope of the invention.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Compression Or Coding Systems Of Tv Signals (AREA)

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Cited By (2)

Citations (3)

• 2012
  • 2012-01-16 WO PCT/CN2012/070430 patent/WO2013106988A1/fr not_active Ceased

Patent Citations (3)

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