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The Enhanced Reference Picture Selection mode contains a feature called Sub-Picture Removal. (...) The memory reduction is accomplished by partitioning each reference picture into sub-pictures. While encoding, the encoder may remove sub-pictures from reference pictures in the multi-frame buffer. (...) If a custom picture clock frequency was not in use for the reference picture, the two MSBs of TRP are zero and the LSBs contain the eight bit TR found in the picture header of the reference picture.
Language:English
Score: 732853.8 - https://www.itu.int/wftp3/av-a...video-site/0005_Osa/q15j49.doc
Data Source: un
Code_number =0: Inter picture Code_number =1: Intra picture. Code_number =2: B picture Code_number =3: SP picture Code_number =4: SI picture 8.2.3 Temporal reference (TRType/TR) See contribution JVT-C070 for a proposal of TR signaling. 8.2.4 Picture structure (PSTRUCT) [Ed. (...) Code_number =0: Progressive frame picture. Code_number =1: Top field picture. Code_number =2: Bottom field picture. (...) A decoder which encounters a picture number on a current picture having a value equal to the picture number of some other short-term stored picture in the multi-picture buffer should treat this condition as an error.
Language:English
Score: 732461.43 - https://www.itu.int/wftp3/av-a...05_Fairfax/JVT-C078_AnnexA.doc
Data Source: un
If a custom picture clock frequency was not in use for the reference picture, the two MSBs of TRP are zero and the LSBs contain the eight bit TR found in the picture header of the reference picture. (...) If the picture coding type indicates an Intra picture the NRPA field is not present. (...) If RPI is set to î0î, no picture is removed from the memory unless a picture is added and the multiple reference picture memory is full.
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Score: 732460.2 - https://www.itu.int/wftp3/av-a...video-site/9902_Mon/q15g18.doc
Data Source: un
PM M -1. If the number of pictures maximally accommodated by the multiple reference picture buffer corresponds to M , the motion estimation when coding picture m , if 0 M , the maximum number of pictures M can be used. (...) If a custom picture clock frequency was not in use for the reference picture, the two MSBs of TRP are zero and the LSBs contain the eight bit TR found in the picture header of the reference picture. (...) For B pictures or the B-picture part of an Improved PB frame, the picture having the temporal reference TRP is used for the prediction in the forward direction.
Language:English
Score: 732376.2 - https://www.itu.int/wftp3/av-a...deo-site/9910_Red/q15i44r1.doc
Data Source: un
When more than one reference picture can be selected, those pictures have to be stored until B-picture is output to display device. (...) Output picture from output picture m emory Update indices of output picture memory Store decoded picutre Output decoded picture Update indices of output picture memory Yes No Figure 2 The flow of operating output picture memory For instance, the operation of output picture memory for six pictures (B1) (B2) (I3) (P4) (B5) (I6) is as follows, where I,B,P expresses the picture type and the number expresses the presentation order. (...) And in this case, two pictures of output picture memory exist. Figure 3 illustrates decoded picture, its output_index, output picture, and the state of output picture memory after outputting the picture, updating indices, and storing decoded picture.
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Score: 732226.07 - https://www.itu.int/wftp3/av-a...002_07_Klagenfurt/JVT-D075.doc
Data Source: un
In coded video sequences that include alpha, there would be one alpha picture for every primary coded (luma-chroma) picture, and the coded alpha picture would be contained in the same access unit as its corresponding primary coded picture. (...) If the primary coded picture is an IDR picture then the alpha picture shall be inferred to be an alpha IDR picture with the same idr_pic_id. 2. (...) A coded slice of any alpha coded picture shall obey the same constraints as a coded slice of a redundant picture, with the following exceptions. · If the associated primary coded picture is an IDR picture, then the alpha coded picture is inferred to also be an IDR picture to be decoded as if it had nal_unit_type = 5.
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Score: 732211.47 - https://www.itu.int/wftp3/av-a...e/2004_07_Redmond/JVT-L013.doc
Data Source: un
Reference Picture Buffering mode (RPB) RPB specifies the buffering of the currently decoded picture. (...) Here any picture can be removed from the multiple reference picture buffer while the currently decoded picture can be inserted at any position into the buffer. (...) If RP is set to ‘0’, no picture is removed from the memory unless a picture is added.
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Score: 732191.8 - https://www.itu.int/wftp3/av-a...video-site/9910_Red/q15i45.doc
Data Source: un
This type of picture is referred to as an EP picture or Enhancement P-picture. (...) However, as with normal P-pictures, EP pictures use motion vectors when predicting from the previous picture in the same layer. (...) The RLNUM gives the enhancement layer number of the forward and backward reference pictures for B-pictures, for the backward reference image for EP pictures, and for the forward reference picture for EI pictures.
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Score: 732113.67 - https://www.itu.int/wftp3/av-a...deo-site/9702_Nic/lbc97018.doc
Data Source: un
The picture header of TML 6, which is called picture sync has two purposes a) it works as a startcode to enable syncronization at picture boundaries and b) it provides some general information about the following picture. (...) TR(8 bits) Temporal reference PQP(5 bits) Picture QP Formats 0 indicates QCIF, 1 indicates CIF EOS 0 for picture header. 1 indicates End Of Sequence 2 Signaling additional picture formats in picture header There is only one bit for indicating the picture format. (...) The picture area covered by all of the standardised picture formats except the sub-QCIF picture format has an aspect ratio of 4:3.
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Score: 732113.67 - https://www.itu.int/wftp3/av-a...deo-site/0104_Aus/VCEG-M61.doc
Data Source: un
Table 1 below shows the variables and their definition: Table 1: A set of variables for each picture pic Variable Definition/Purpose curTemporalLevelpic · Specifies the current temporal level of picture pic in the MCTF structure, as illustrated in Figure 1. · Initialized based on TemporalLevel derived from syntax element decodability_dependency_information. · Increment by 1 after every inverse update step or inverse prediction step. · If a reference picture (L picture) of a residual picture (H picture) have same value of curTemporalLevel as H picture, the L picture needs to be inverse updated before being used by H picture as reference picture for inverse prediction. maxActivePrdL0pic maxActivePrdL1pic · Specify the total number of pictures in reference picture lists (RefPicList0 and RefPictList1) of pic required for the inverse prediction step of pic, if pic is a residual picture. · Set equal to 1 plus the maximum value of the syntax element num_ref_idx_lX_active_minus1 of all slices inside the picture pic, if pic is a residual picture. (...) Inputs to this process are pictures of the decoded picture buffer and the current bitstream-decoded picture pic. (...) Every picture pic in the decoded picture buffer will have this set of variables. 1.
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Score: 732019.3 - https://www.itu.int/wftp3/av-a...ite/2005_04_Busan/JVT-O026.doc
Data Source: un