CN105245879B - New plane prediction mode - Google Patents

Abstract

This disclosure relates to new plane prediction mode.New frame inner plane pattern is described for predicted figure video data.As a part for the new frame inner plane pattern, various methods are provided for the first sample in prediction predicting unit, wherein need the first sample for reference when handling new frame inner plane pattern.And once the first sample is successfully predicted, and the new frame inner plane pattern can predict the sample of the video data in the predicting unit by handling the bilinear interpolation of four reference samples previously rebuild.

Description

New plane prediction mode

The application be on November 26th, 2012 international filing date submitted be on May 25th, 2011 application No. is 201180026091.0 (PCT/KR2011/003828's), point of entitled " new plane prediction mode " patent application Case application.

Technical field

The present invention relates to one kind for having used frame inner plane mode-type to predict (intra planar mode type Prediction the method and apparatus that the digital video data) encoded executes frame inner plane mode-type prediction decoding.

Background technology

Digital video signal is made of a series of digital video frames of the expression as original rgb video signal.As mould Intend the part to digital signal conversion, each frame of original rgb video signal is encoded into including digital video signal The digital video frame of data.The purpose of coded treatment is to calculate the digital forecast of original rgb video signal reported as precisely as possible, together When also attempt that the compression of the binary data of digital representation as original rgb video signal is made to maximize.Although in the presence of being used for Inter-prediction (inter prediction) method and intra prediction (intra prediction) method of encoded video signal The two, but the present invention is only related with the intra-frame prediction method for being also known as space predicting method.

In order to realize that coded treatment, coding unit encode it by prediction is handled in a part for original video frame At digital video data.The digital video data of obtained coding is referred to as predicting unit.Multiple predicting units will be wrapped usually Include tree-like piece (tree block) of video data, multiple tree-like pieces will generally include the band (slice) of video data and Then multiple bands generally include the frame of digital video data, although other configurations are possible.Specifically about being fixed against sky Between the intra-frame prediction method predicted, will be predicted just by referring to the sample for the previous prediction for spatially abutting current prediction unit Processed current prediction unit.Once all digital video frames have been predicted and have encoded, digital video programs are just claimed To be to be fully compressed, and carried out the preparation as digital video data or signal and storage or transmission.Together with reality Together, coding unit further includes indicating which prediction mode has been used to prediction video data to the digital video data on border The identification information of each predicting unit.

Then decoding unit is assigned decoding or decompression work to execute digital video data/signal.Decoding passes through It is handled being applied by the same prediction mode processing of coding unit application in each predicting unit.By parsing identification letter It ceases and is determined as each predicting unit for predicting video data and the prediction mode appropriate that identifies realizes this.Passing through will Prediction appropriate is applied in each predicting unit of video data, and decoding unit can successfully rebuild original video.Solution Code unit is to be assigned the showing expression of the task that digital video signal is reconstructed into raw video signal.According to for The intra prediction mode of predicting unit is decoded, the sample previously rebuild from the predicting unit previously rebuild is by referenced with weight Build the sample of the current prediction unit just handled at present by decoding unit.

Among many available intra prediction modes for the predicting unit of predicted figure video data, the present invention with Frame inner plane prediction mode is related.Generally known frame inner plane model prediction is first by referring to the phase rebuild in advance Adjacent block predicts the single sample in current prediction unit.Then after predicting the first sample in current prediction unit, By referring to the reconstruction sample of the first sample predicted in current prediction unit and the block from adjacent current prediction unit To predict the remaining sample of current prediction unit.

Invention content

Technical problem

New method for handling intra prediction according to frame inner plane prediction mode needs to realize higher efficiency.There is also The sum of the information bit of vision signal is encoded into reduction to reduce the needs of the total data size of vision signal.

Solution to the problem

The object of the present invention is to provide the various new methods of the prediction for obtaining the first sample in current prediction unit, Wherein, current prediction unit is just predicted by new frame inner plane pattern according to the present invention.It is used for current predictive once providing First sample in unit, which has been predicted and has rebuild, just predicts that the various methods of the remaining sample in current prediction unit are also The purpose of the present invention.According to the present invention, these methods will be by referring to first sample and from adjacent current prediction unit The sample of block previously rebuild predicts the remaining sample in current prediction unit.

Advantageous effect of the invention

New method according to the present invention for handling frame inner plane prediction mode, which can be realized, surpasses previous version more High efficiency.The present invention can also reduce the total data size of vision signal.

It is to be understood that the aforementioned general embodiment and specific implementation mode below of the present invention are exemplary and explanation Property, and it is intended to provide being explained further such as claimed invention.

Description of the drawings

Fig. 1 illustrates the first embodiments according to the present invention for obtaining the first sample of predicting unit；

Fig. 2 illustrates the second embodiment according to the present invention for obtaining the first sample of predicting unit；

Fig. 3 illustrates the 3rd embodiment according to the present invention for obtaining the first sample of predicting unit；

Fig. 4 illustrates the fourth embodiment according to the present invention for obtaining the first sample of predicting unit；

Fig. 5 illustrates according to the present invention first real for predicting remaining sample after first sample has been predicted Apply example；

Fig. 6 illustrates according to the present invention second real for predicting remaining sample after first sample has been predicted Apply example；

Fig. 7 illustrates the enlarged view of the part taken from Fig. 6；

Fig. 8 illustrates according to the present invention for predicting that the third of remaining sample is real after first sample has been predicted Apply example；

Fig. 9 illustrates the enlarged view of the part taken from Fig. 8；

Figure 10 illustrates according to the present invention for being predicted to predict the 4th of remaining sample later in first sample Embodiment；

Figure 11 illustrates according to the present invention for being predicted to predict the 5th of remaining sample later in first sample Embodiment；

Figure 12 illustrates according to the present invention for being predicted to predict the 6th of remaining sample later in first sample Embodiment；

Figure 13, which is illustrated, according to the present invention is confirmed as the important side with particular reference to sample for filtering (filter) Method；

Figure 14 illustrates the example according to the present invention for handling the first sample of predicting unit；

Figure 15 illustrates the example according to the present invention for determining the position of the first sample of predicting unit；

Figure 16 illustrates another example according to the present invention for determining the position of the first sample of predicting unit；

Figure 17 illustrates the example according to the present invention for determining the position of the first sample of predicting unit；

Figure 18 illustrates the post-processing according to the present invention in the first sample that predicting unit has been received and predicts The method of unit；

Figure 19 illustrates the pass between the block of the video data of predicting unit according to the present invention and the adjacent predicting unit System；

Figure 20 illustrates decoding unit according to the present invention, and

Figure 21 illustrates the close-up illustration of the predicting unit of the part as the decoding unit illustrated in Figure 20.

Specific implementation mode

Detailed reference now is carried out to the preferred embodiment of the present invention, the example of preferred embodiment is illustrated in attached drawing In.The term or word used in the present description and claims is not construed as limited to general or dictionary meanings, and It with most probable should be described inventor intention by can suitably define term concepts based on inventor and be construed to have With the matched meaning of technological thought and concept of the present invention.The disclosed embodiments and shown in the accompanying drawings in the disclosure What configuration was exemplary in nature, and be substantially not intended to be comprising all.Preferred embodiment does not indicate that the institute of the present invention Possible technique variation.It will consequently be understood that the present invention covers the modifications and variations of the invention, as long as submitting the application When they fall into the range of the appended claims and their equivalents.

It should be noted that for the purpose illustrated as follows, all narrations of adjacent block are understood to be to work as about adjoining The block of preceding predicting unit.Current prediction unit is understood to include new frame inner plane pattern just according to the present invention and is predicted The current predictive sample of processing.Distance H refers to the height of the current prediction unit in terms of sample, and W is referred to sample The width of the current prediction unit of meter.Similarly any gray area is illustrated as the sample for indicating previously to have rebuild.The sample of reconstruction This (reconstructed sample) be predicted and with the residual values (residual that is included in vision signal Value) merge, then such reconstruction sample referenced can be used for according to the present invention come forecast sample.The sample of prediction (predicted sample) still not yet merges with residual values to be reconstructed, but has been predicted processing and acceptable quilt Reference is used for according to the present invention come forecast sample.Any use of term " sample " is understood to can be with well known term " pixel " It exchanges.

Fig. 1 illustrates for predicting the first current predictive sample RB in current prediction unit 101 for according to this The first embodiment of reference is carried out in the new frame inner plane mode prediction method of invention.See that current prediction unit 101 has Positioned at neighbouring and in the adjacent left part block 102 on the left side of current prediction unit 101.And see that current prediction unit 101 has Have positioned at neighbouring and in the adjacent upper block 103 on the top of current prediction unit 101.Adjacent left part block 102 and adjacent upper Both blocks 103 are depicted as gray area to indicate that they are made of the sample previously rebuild.Although only the first current predictive sample This RB is specifically had been illustrated, but current prediction unit 101 includes additionally to need to be predicted and finally rebuild Multiple current predictive samples.In addition, the first current predictive sample RB will be the sample being located at the right lower quadrant of current prediction unit 101 This.

According to the first embodiment for predicting the first current predictive sample RB in current prediction unit 101, will be based on DC model predictions predict the first current predictive sample RB in frame.DC model predictions are by the sample value and sample of sample for reference T in frame The sample value of this L, and determine the average value of the two sample values.From adjacent upper mass 103 with reference to reference sample T, and from Adjacent left part block 102 is with reference to reference sample L.Then according to DC model predictions in frame, the average sample value of reference sample T and L will As the predicted value for the first current predictive sample RB.Now with DC model prediction values in this frame, it to be used for the predicted value of RB It can be referenced to predict the remaining sample of current prediction unit 101.Although Fig. 1 specifically identifies the position of reference sample L and T It sets, but it is next also within the scope of the invention with reference to reference sample L from any one sample from adjacent left part block 102, and And come from any one sample from adjacent upper block 103 also within the scope of the invention with reference to reference sample T.

Fig. 2 is illustrated for predicting the first current predictive sample RB in current prediction unit 201 for according to this The second embodiment of reference is carried out in the new frame inner plane mode prediction method of invention.According to this second embodiment, will be based on The average value of the reference sample 2H previously rebuild and the reference sample 2W previously rebuild predict the first current predictive sample RB.It takes Certainly in the size of the adjacent block on the left side of current prediction unit 201, reference sample 2H can be taken from adjacent left part block or phase Adjacent lower left quarter block.Depending on the size of the adjacent block in the top of current prediction unit 201, reference sample 2W can be taken from phase Adjacent upper mass or adjacent upper right quarter block.It will be used as and be used according to this average sample value of this second embodiment reference sample 2H and 2W In the predicted value of the first current predictive sample RB.It, can be with now by referring to this prediction for the first current predictive sample RB Predict the remaining sample of current prediction unit 201.It is not available in reference sample 2H, for this second embodiment Purpose is referred to be located at the reference sample at distance H in adjacent left part block instead of reference sample 2H.In reference sample In the case of 2W is not available, in order to which the purpose of this second embodiment is referred to instead of reference sample 2W in adjacent upper Reference sample in block at distance W.

Fig. 3 is illustrated for predicting the first current predictive sample RB in current prediction unit 301 for according to this The 3rd embodiment of reference is carried out in the new frame inner plane mode prediction method of invention.According to this 3rd embodiment, phase is come from The average value of four reference samples previously rebuild of adjacent block is by referenced to predict the first current predictive sample RB.Specifically, Reference sample T and reference sample 2T is by referenced to obtain average sample value T '.Although from adjacent upper mass with reference to reference sample T, but depending on the size of adjacent upper block, it can be from same adjacent upper block or individual adjacent upper right quarter block with reference to reference Sample 2T.Similarly, reference sample L and 2L by referenced to obtain average sample value L '.Although reference sample L is by from an adjacent left side Portion's block obtains, but depending on the size of adjacent left part block, it can be from same adjacent left part block or individual lower left quarter adjacent block With reference to reference sample 2L.Then, the prediction of the first current predictive sample RB will be T ' and L according to third embodiment ' average value. Now by referring to this prediction of the first current predictive sample RB, the remaining sample of current prediction unit 301 can be predicted.

In figure 3 the average value for determining two reference samples is indicated by shift function (shift function) Function.Such as the average value of reference sample L and 2L are by following presentation：

L '=(L+2L+1)>>1

According to above-mentioned shift function, value 1 is added to the summation of reference sample L and 2L, is missed to illustrate potentially to accept or reject Poor (rounding error), however abandon plus 1 is also within the scope of the invention.And double-head arrow shift function>>Expression passes through With two the average value of summation is taken except summation.Using shift function, for the surplus of illustrated RB in Fig. 3 and T ' average sample values Remaining calculating is construed as carrying out operation in a similar manner.

Fig. 4 is illustrated for predicting the first current predictive sample RB in current prediction unit 401 for according to this The fourth embodiment of reference is carried out in the new frame inner plane mode prediction method of invention.According to this fourth embodiment, pass through ginseng The predicted value of the first forecast sample RB is obtained according to two reference samples from adjacent block.Specifically, adjacent upper is depended on The size of block, can be from can be that the adjacent block of adjacent upper block or adjacent upper right quarter block comes with reference to the first reference sample T '.The The distinctive feature of one reference sample T ' is to come between the sample T and 2T previously rebuild with reference to it.Depending on adjacent left part block Size, from can be that the adjacent block of adjacent left part block or adjacent lower left quarter block comes with reference to the second reference sample L '.Second reference The distinctive feature of sample L ' is to come between the sample L and 2L previously rebuild with reference to it.Then from the average value of reference sample The predicted value of the first current predictive sample RB is obtained in T ' and L '.This is expressed as by the shift function in Fig. 4：

RB=(T '+L '+1)>>1

According to above-mentioned shift function, value 1 is added to the summation of reference sample T ' and L ', is missed to illustrate potentially to be rounded Difference, however abandon plus 1 also within the scope of the invention.And double-head arrow shift function>>It indicates by total to take except summation with two The average value of sum.

After obtaining the predicted value of the first current predictive sample RB by the value of average reference sample T ' and L ', the One current predictive sample RB referenced can predict current predictive list for new intra-mode prediction according to the present invention Remaining sample in member 401.

Fig. 5 is illustrated for predicting current prediction unit after the prediction for obtaining the first current predictive sample RB first The first embodiment of remaining sample in 501.Once it is current that any method having thus described the invention predicts first Forecast sample RB, the sample RB from adjacent left piece 502 of sample L and in current prediction unit 501 is by referenced to hold Row linear interpolation (linear interpolation).The result of linear interpolation from reference sample L and reference sample RB exists It is referred to as LI1 in Fig. 5.Then the obtained predicted value LI1 of linear interpolation from reference sample L and RB is flatly filled conduct The predicted value of all current predictive samples for the bottom line (bottom row) along current prediction unit 501.Along working as These samples of the bottom line of preceding predicting unit 501 now can be referenced for surplus in prediction current prediction unit 501 Remaining sample.

Similarly, the sample T from adjacent upper block 503 and the sample RB in current prediction unit 501 will be joined According to execute linear interpolation.The obtained predicted value of linear interpolation from reference sample T and reference sample RB is expressed in Figure 5 For LI2.The obtained predicted value LI2 of linear interpolation from reference sample T and RB be then filled with as vertically along The predicted value of all current predictive samples of the most right part row (right-most column) of current prediction unit 501.Vertically These samples arranged along the most right part of current prediction unit 501 now can be referenced for prediction current prediction unit Remaining sample in 501.

Continue Fig. 5, by from from left part adjacent block 502, top adjacent block 503 and in current prediction unit 501 The sample previously rebuild among the bilinear interpolation (bi-linear interpolation) of four reference samples that is taken come Predict the remaining sample in the current prediction unit 501 being not yet predicted.For example purposes, Fig. 5 is depicted for current The prediction of forecast sample C is handled.Therefore according to first embodiment, the prediction for current predictive sample C will be reference sample Ly, The bilinear interpolation of LI2, Tx and LI1.Visible to be, reference sample Ly is to come to abut with current prediction unit 501 Adjacent left part block 502 the sample previously rebuild, and also share y-coordinate identical with current predictive sample C.Reference sample LI2 is the sample of the prediction in the current prediction unit 501 that the linear interpolation by reference to sample L and RB was predicted. It can also see, reference sample Tx is the previous reconstruction from the adjacent upper block 503 abutted with current prediction unit 501 Sample, and also share x coordinate identical with current predictive sample C.Reference sample LI1 be from by reference to sample L and The sample of the linear interpolation of RB and the prediction in the current prediction unit 501 predicted.The bilinearity of Ly, LI2, Tx and LI1 Interpolation will simultaneously be handled to obtain the predicted value of current predictive sample C.Mode root similar with current predictive sample C will be used The remaining current predictive sample in current prediction unit 501 is predicted according to first embodiment.

Alternatively, the bilinear interpolation of current predictive sample C can also by average two individual linear interpolations come Processing.According to this replacement, the line of reference sample Ly and LI2 will be dividually handled with the linear interpolation of reference sample Tx and LI1 Property interpolation, and then referring to the prediction of sample C by the average value based on the two linear interpolations.It will use and current predictive sample According to first embodiment this of the similar modes of C substitutes to predict remaining current predictive sample.

Fig. 6 is illustrated for predicting current prediction unit after the prediction for obtaining the first current predictive sample RB first The second embodiment of remaining sample in 601.In figure 6, what is seen is by taking putting down for reference sample 2L and reference sample 2T Mean value predicts the first current predictive RB.After having predicted the first current predictive sample RB, along current prediction unit The remaining current predictive sample of 601 bottom line is replicated from adjacent block as depicted in figure 6.Depending on adjacent left part The size of block, the referenced reference sample to replicate the bottom line of current prediction unit 601 can come from and current prediction unit 601 relevant adjacent left part blocks or adjacent lower left quarter block.Similarly, along the most right part vertical row of current prediction unit 601 Remaining current predictive sample is replicated from adjacent block as depicted in figure 6.Depending on the size of adjacent upper block, joined Adjacent upper block or adjacent upper right are can come from according to the reference sample for replicating the most right part vertical row in current prediction unit 601 Portion's block.

Fig. 7 is the close-up illustration for the current prediction unit 601 seen in figure 6.By multiple from adjacent block as seen in Figure 6 Sample preparation sheet and predict along after the bottom line of current prediction unit 601 and the most sample of right part vertical row, according to bilinearity Interpolation predicts the remaining sample in current prediction unit 601.By referring to being derived from left part adjacent block 602, top adjacent block 603 Bilinear interpolation is handled with four samples being derived from current prediction unit 601.For example purposes, Fig. 7, which is depicted, works as The prediction of preceding forecast sample C is handled.Therefore according to this second embodiment, the prediction of current predictive sample C will be reference sample Ly, The bilinear interpolation of RC, Tx and BC.Reference sample Ly is from the adjacent left part block 602 abutted with current prediction unit 601 Sample, and also on y-coordinate line identical with current predictive sample C.Reference sample RC is to come from current predictive sample 601 Interior sample, the current forecast sample 601 as above with reference to illustrated by Fig. 6 by from adjacent block replicate reference sample And predict, and reference sample RC is also on y-coordinate line identical with current predictive sample C.Reference sample Tx is to come from The sample of the adjacent upper block 603 abutted with current prediction unit 601, and also in x coordinate identical with current predictive sample C On line.Reference sample BC is the sample in current predictive sample 501, which such as joins above According to illustrated by Fig. 6 by from adjacent block replicate reference sample by predicted, and reference sample BC also and current predictive On the identical x coordinate lines of sample C.The bilinear interpolation of Ly, Rc, Tx and Bc will be handled simultaneously to obtain current predictive The predicted value of sample C.It will be predicted with mode similar with current predictive sample C according to this second embodiment remaining current pre- Test sample sheet.

Alternatively, the bilinear interpolation of current predictive sample C can also by average two individual linear interpolations come Processing.According to this replacement, the linear of reference sample Ly and Rc will be dividually handled with the linear interpolation of reference sample Tx and Bc Interpolation, and then the prediction of current reference sample C by the average value based on the two linear interpolations.To root in a similar manner Remaining current predictive sample is predicted according to this replacement of second embodiment.

Fig. 8 is illustrated for predicting current prediction unit after the prediction for obtaining the first current predictive sample RB first The 3rd embodiment of remaining sample in 801.It is predicted according to any one of previously mentioned embodiment above After first current predictive sample RB, filled by using the linear interpolation of two reference samples from two adjacent block references Belong to the remaining current predictive sample of the bottom line of current prediction unit 801.For example purposes, current pre- for predicting The example of this B5 of test sample will be described for predicting the exemplary reality of the sample of the bottom line along current prediction unit 801 Example.It is visible from Fig. 8 to be, it is referenced to predict two reference samples of current predictive sample B 5 along public linea angulata (common angular line) is placed, and still comes from two individual adjacent blocks.Ruler depending on adjacent left part block It is very little, it such as can be by from adjacent left part block or adjacent lower left quarter block reference by the first reference sample of arrow α instruction.Depending on adjacent The size of upper mass can such as be joined by the second reference sample of arrow 1- α instructions from adjacent upper mass or adjacent upper right quarter block According to.Therefore the first reference sample and the second reference sample by by linearly interpolation to obtain the prediction for current predictive sample B 5 Value.It will be predicted in a similar manner along current pre- by referring to two placed along corresponding linea angulata individual reference samples Survey the remaining current predictive sample of the bottom line of unit 801.Then it can predict the remaining sample in current prediction unit 801 This when, is with reference to the current predictive sample predicted.

It similarly depicts in fig. 8 according to this 3rd embodiment for the most right part in current prediction unit 801 The prediction technique of the sample of vertical row.For example purposes, the example of prediction current predictive sample R2 will be described for Predict the illustrative examples of the sample of the most right part vertical row along current prediction unit 801.It is visible from Fig. 8 to be, It is referenced to predict that two reference samples of current predictive sample R2 are placed along public linea angulata, and still come from two individually Adjacent block.It, such as can be by from adjacent left part block or phase by the first reference sample of arrow α instruction depending on the size of left part block Adjacent lower left quarter block reference.It, such as can be by from adjacent by the second reference sample of arrow 1- α instruction depending on the size of upper mass Portion's block or adjacent upper right quarter block reference.Therefore the first reference sample and the second reference sample will be by linearly interpolations to be used for The predicted value of current predictive sample R2.By by referring to two placed along corresponding linea angulata individual reference samples with similar Mode predicts the remaining sample of the most right part vertical row along current prediction unit 801.It can be then in prediction current predictive With reference to the current predictive sample of prediction when remaining sample in unit 801.

Fig. 9 is the close-up illustration for the current prediction unit 801 seen in fig. 8, wherein the sample along bottom line and edge The sample for most right part vertical row has been predicted.By from from left part adjacent block 802, top adjacent block 803 and from working as The bilinear interpolation of four reference samples taken among the sample previously rebuild in preceding predicting unit 801 come predict not yet by Remaining sample in the current prediction unit 801 of prediction.For example purposes, Fig. 9 depicts the prediction of current predictive sample C The example of processing.Therefore according to this 3rd embodiment, the prediction of current predictive sample C will be reference sample Ly, RC, Tx and BC Bilinear interpolation.Reference sample Ly is the sample from the adjacent left part block 802 abutted with current prediction unit 801, and Also on y-coordinate line identical with current predictive sample C.As illustrating above with reference to Fig. 8, reference sample RC is to come from Sample in current predictive sample 801, which has been based on comes from adjacent block along what public linea angulata was placed Two samples linear interpolation and predicted, and reference sample RC is also in y-coordinate line identical with current predictive sample C On.Reference sample Tx is the sample from the adjacent left part block 803 abutted with current prediction unit 801, and also with it is current On the identical x coordinate lines of forecast sample C.As illustrating above with reference to Fig. 8, reference sample BC is to come from current predictive sample Sample in sheet 801, the current forecast sample 801 have been based on two from the adjacent block sample placed along public linea angulata Linear interpolation and predicted, and reference sample RC is also on x coordinate line identical with current predictive sample C.Ly、Rc、 The bilinear interpolation of Tx and Bc will simultaneously be handled to obtain the predicted value of current predictive sample C.It will use and current pre- The similar modes of this C of test sample predict remaining current predictive sample according to this 3rd embodiment.

Alternatively, the bilinear interpolation of current predictive sample C can also be by individually taking reference sample Ly and RC Linear interpolation and the linear interpolation for taking reference sample Tx and BC, and the average value of the two linear interpolations is then taken to locate Reason.It according to third embodiment this will substitute in a similar manner to predict remaining current predictive sample.

Figure 10 is illustrated for predicting current prediction unit after the prediction for obtaining the first current predictive sample RB first The fourth embodiment of remaining sample in 401.It is predicted according to any one of previously mentioned embodiment above After first current predictive sample RB, filled out by using the bilinear interpolation of four reference samples from the reference of adjacent block institute Fill/predict all remaining current predictive samples for belonging to current prediction unit 401.There is no need to individually calculate for along The current predictive sample that the bottom line of current prediction unit 401 is placed and the most right part vertical row along current prediction unit 401 The prediction of the current predictive sample of placement.For example purposes, Figure 10 depicts the current predictive according to this fourth embodiment The prediction of sample C is handled.

In order to handle the prediction of current predictive sample C, the bilinear interpolation of four reference samples will be made：Ly、2T、Tx And 2L.Reference sample Ly is the sample from the adjacent left part block abutted with current prediction unit 401, and also with it is current On the identical y-coordinate lines of forecast sample C.Reference sample 2T is only taken from the previous weight of adjacent upper block or adjacent upper right quarter block The duplication of the reference sample 2T built.Reference sample Tx is the sample from the adjacent upper block abutted with current prediction unit 401, And also on x coordinate line identical with current predictive sample C.Reference sample 2L is only taken from adjacent left part block or an adjacent left side The duplication for the reference sample 2L of bottom piece previously rebuild.Then the bilinear interpolation of Ly, 2T, Tx and 2L will be located in simultaneously It manages to obtain the predicted value for current predictive sample C.With mode similar with current predictive sample C according to this 4th implementation Example predicts remaining current predictive sample.

It should be noted that according to this fourth embodiment, reference sample 2L and 2T will be for predict current prediction unit 401 Interior current predictive sample and each bilinear interpolation for making are kept constant.However reference sample Ly and Tx will change with correspondence In the x and y coordinates for the current predictive sample being just predicted.

First as this fourth embodiment substitutes, and bilinear interpolation can also be treated as two individual linear interpolations Average value.According to this first replacement, the first linear interpolation is taken by referring to sample Ly and 2T.And by referring to sample Tx The second linear interpolation is taken with 2L.The prediction of current predictive sample C will be the first linear interpolation and sample from sample Ly and 2T The obtained average value of the second linear interpolation of this Tx and 2L.It will be substituted in a similar manner come pre- according to this of fourth embodiment Survey remaining current predictive sample.

In being substituted for the second of this fourth embodiment, after predicting the first current predictive sample RB and pre- It surveys before current predictive sample C, the current predictive sample being placed in the bottom line of current prediction unit 401 can utilize 2L's It replicates to fill.And similarly, the current predictive sample being placed in the most right part row of current prediction unit 401 can utilize The duplication of 2T is filled.

Figure 11 is illustrated for predicting current prediction unit after the prediction for obtaining the first current predictive sample RB first 5th embodiment of the remaining sample in 1101.The first current predictive is predicted in any one method according to the present invention It is previous by the first linear interpolation of average two reference samples previously rebuild and two from adjacent block after sample RB All remaining current predictive samples in current prediction unit 1101 are predicted in second linear interpolation of the reference sample of reconstruction.

In fig. 11, by referring to it is at y-coordinate identical with current predictive sample C, from adjacent left part block reference The reference sample Ly previously rebuild, and with reference to it is from current prediction unit 1101, as from adjacent with upper right quarter sample The sample T of the duplication of the previous reconstruction sample T of the adjacent upper block connect makes the first linear interpolation.By referring to being located at and work as The reference sample Tx at the identical x coordinate of preceding forecast sample C, from adjacent upper block previously rebuild, and with reference to coming from Current prediction unit 1101, duplication as the previous reconstruction sample L from the adjacent left part block abutted with lower left quarter sample Sample L make the second linear interpolation.

First linear interpolation is added to the second linear interpolation, and then average, to obtain the pre- of current predictive sample C It surveys.Average function is in fig. 11 by moving to right bit function>>Pass through graph representation.Then the prediction of current predictive sample C is First Line Property interpolation and the second linear interpolation are averaged.Remaining sample will be predicted in a similar manner.First linear interpolation will always With reference to the reproduction copies T from adjacent upper block, and then alternatively sat with reference to y identical with current predictive sample C Target, the sample Ly previously rebuild from adjacent left part block.And second linear interpolation will always with reference to come from adjacent left part The reproduction copies L of block, and then alternatively reference has x coordinate identical with current predictive sample C, comes from adjacent upper block The sample Tx previously rebuild.

It is after predicting the first current predictive sample RB and current pre- in prediction in the replacement of this 5th embodiment Before this C of test sample, working as in the bottom line of current prediction unit 1101 can be placed on to fill using the duplication of reference sample L Preceding forecast sample.And likewise it is possible to the duplication using reference sample T is placed on current prediction unit 1101 most to fill Current predictive sample in right part row.

Figure 12 is illustrated for predicting current prediction unit after the prediction for obtaining the first current predictive sample RB first The sixth embodiment of remaining sample in 1201.The first current predictive is predicted in any one method according to the present invention After sample RB, all remaining current predictive samples in current prediction unit 1201 will be based on the linear interpolation of two weightings Combination predict.

In fig. 12, by referring to it is at y-coordinate identical with current predictive sample C, joined from adjacent left part block According to the reference sample Ly previously rebuild, and with reference to as from the adjoining of the upper right quarter sample of current prediction unit 1201 The sample T of the duplication of the previous reconstruction sample T of adjacent upper block makes the first linear interpolation.By referring to positioned at it is current pre- The reference sample Tx at the identical x coordinates of this C of test sample, from the reference of adjacent upper mass institute previously rebuild, and with reference to conduct The sample of the duplication of previous reconstruction sample L from the adjacent left part block with the adjoining of the lower left quarter sample of current prediction unit 1201 L makes the second linear interpolation.

Each in present first linear interpolation and the second linear interpolation will be assigned to the weighted value of themselves.Figure 12 illustrate the first linear interpolation will be weighted by the first weighted value WH and the second linear interpolation will by the second weighted value WV Lai Weighting.Therefore, the prediction Pc of current predictive sample C will be summation：

Pc=WH x (the first linear interpolation)+WV x (the second linear interpolation)

It is assumed that current predictive sample C has coordinate (x, y) in the current prediction unit 1201, then current predictive sample C Prediction PC (x, y) will comply with following equation：

PC (x, y)=(y+1)/(x+y+2) (the first linear interpolation)+(x+1)/(x+y+2) (the second linear interpolation)

According to above-mentioned equation, the value by the WH for being applied to the first linear interpolation is (y+1)/(x+y+2).

And by the value for the WV for being applied to the second linear interpolation it is (x+1)/(x+y+2).

It is after predicting the first current predictive sample RB and current pre- in prediction in the replacement of this sixth embodiment Before this C of test sample, working as in the bottom line of current prediction unit 1201 can be placed on to fill using the duplication of reference sample L Preceding forecast sample.And likewise it is possible to the duplication using reference sample T is placed on current prediction unit 1201 most to fill Current predictive sample in right part row.

Figure 13 illustrates the new method of the specific sample for filtering adjacent current prediction unit, wherein according to this hair Daylight is referred to be selected for the sample of filtering when managing new frame inner plane model prediction.Usually and current prediction unit The adjacent sample T of 1301 upper right quarter sample adjoining will be during new frame inner plane model prediction by the sample of importantly reference One of this.Similarly, the adjacent sample L usually with the adjoining of the right lower quadrant sample of current prediction unit 1301 will be in new frame By another sample of importantly reference during plane mode prediction.It is prioritized accordingly, there exist two reference samples T and L are made It is expected that.Therefore as the method for making reference sample T and L be prioritized, the present invention provides handled with reference to sample by filtration treatment The solution of this T and L, so as to improve the gained in current prediction unit 1301 forecast sample flatness, and improve The efficiency of overall video Signal Compression.

Therefore, Figure 13 is by 1:2:1 filtration treatment handles the diagrammatic illustration of reference sample T and L.In order to realize basis The filtration treatment of the present invention will also utilize the sample previously rebuild with reference sample T and L adjoining.For example, with reference sample T The sample T-1 and the T+1 that is abutted with the right part of reference sample T of left part adjoining be highlighted in fig. 13.Similarly, with ginseng It examines the sample L-1 of the upper adjacent of sample L and is highlighted in fig. 13 with the bottom contiguous L+1 of reference sample L.By referring to The reference sample that the filtration treatment of sample T and L generate will be hereinafter referred to as T ' and L '.Then in new frame according to the present invention Plane mode will be actually referenced come these sample T ' and L ' for filtering when predicting the sample in current prediction unit 1301.

It is handled according to following equation and is applied to the 1 of reference sample T:2:1 filtration treatment：

Because in the most basic level of numerical data, actual sample value is indicated by a string of binary bits, so Above-mentioned equation can be to indicate that the binary bits of the value of reference sample T are write by shift function.It is write by shift function This equation can be written as follows：

T '={ T_-1+ (T ＜ ＜ 1)+T₊₁+ 2 } ＞ ＞ 2

With reference to the above-mentioned equation write by shift function, (<<1) shift left and indicate single displacement to the left, this is mathematically It is understood to be equivalent to two times or is multiplied by two.(>>2) dextroposition indicates two displacements to the right, this is mathematically understood to phase When in divided by four.

Similarly, it is handled according to following equation and is applied to the 1 of reference sample L:2:1 filtration treatment：

This equation can also be by being indicated by shift function below：

L '={ L_-1+ (L ＜ ＜ 1)+L₊₁+ 2 } ＞ ＞ 2

After the filtering for having handled reference sample L and T, new filtered value L ' and T ' will replace original reference sample L and T.By doing so, with reference to new mistake when can handle new frame inner plane model prediction in current prediction unit 1301 Reference sample L ' and T ' after filter.

However, if be not available with one in the sample of reference sample T and L adjoining, it to be used for the reference sample Value will needs weighted to a greater degree.For example, if be not available with the sample T+1 of the right part adjoining of reference sample T, Then reference sample T can undergo 1 handled according to following equation:3 filtration treatments：

It is evident that opposite with original twice from the filtering equation of revision, the value for reference sample T is weighted Three times, to compensate as not available sample T+1.By shift function, this new filtration treatment can be written as follows：

T '={ T_-1+ (T ＜ ＜ 1)+T+2 } ＞ ＞ 2

Similarly, if the sample T-1 abutted with the left part of reference sample T is not available, reference sample T can be through Go through 3 handled according to following equation:1 filtration treatment：

By shift function, this new filtration treatment can be written as follows：

T ＇={ (T ＜ ＜ 1)+T+T₊₁+ 2 } ＞ ＞ 2

When any of neighbouring sample L+1 or L-1 are not available, same type of compensation filtration treatment can fit For filtering reference sample L.

The sample in current prediction unit 1301 will be generated with reference to new filtered reference sample L ' and T ' more flat Sliding prediction, and improve the compression efficiency of digital video signal.

Described all embodiments require after being received by decoding unit till now, in current prediction unit Interior right lower quadrant sample is the first forecast sample to be predicted.However, alternative aspect according to the present invention, initially regards original Frequency Signal coding at the predicting unit of video data coding unit can by new frame inner plane pattern according to the present invention and A sample in the predicting unit of prediction keeps being in reconstruction state.The first prediction of reconstruction state is in by being then transported on Sample, this will be predicted from execution to obtain this first forecast sample during new frame inner plane model prediction for reference Decoding unit is liberated in task.This first forecast sample is being described above AS in new frame according to the present invention The required interpolation processing of plane mode prediction is required.

In addition, this alternative aspect of the present invention also allows to be located at by this first predicted value transmitted as reconstruction sample At any point in predicting unit.It is located in advance although previous example contemplates always this first forecast sample in predicting unit The right lower quadrant corner of unit is surveyed, but this alternative aspect of the present invention allows this first forecast sample to be located at any position Place.

For example purposes, Figure 14 illustrates the first current predictive sample C in reconstruction state, this is first current pre- This C of test sample is by picture gray shade to indicate that it is received by decoding unit.In addition, from adjacent left part block 1402 and it is adjacent on The sample of portion's block 1403 is by picture gray shade to indicate that previously decoded unit is rebuild for they.To rebuild state biography The the first current predictive sample C sent may be accompanied with coordinate information, which indicates the in current prediction unit 1401 The position of one current predictive sample C.If by the coordinate of the first current predictive sample C to rebuild state transmission not by as knowledge A part for other information includes that in video signals, then decoding unit has the various options for determining coordinate.

In general, the coding unit side of predicting unit is encoded into raw video signal, if for identification will be to rebuild The information of the position of first forecast sample of state transmission is not included with the vision signal transmitted, then coding unit It coincides (coincide) by the position of the first forecast sample and along the edge of adjacent block.This is desirable practice, because In the presence of for receiving predicting unit to detect the various methods of the decoding unit at these edges.It can select to be used for from coding unit The position of first forecast sample C in the diagram of the Figure 15 to coincide with edge 1504 and 1505 to see this practice.Edge is basic On be the adjacent block abutted with predicting unit 1501 edge.Therefore edge 1504 is the edge of adjacent left part block 1502, and Edge 1505 is from the edge of adjacent upper block 1503.Since these edges of the segmentation of adjacent block are formed to be less than prediction list The size of member 1501.It is transmitted for identification with reconstruction state so if coding unit significantly transmits not in vision signal Forecast sample C position information, then coding unit must select the predicting unit that can be readily recognized by decoding unit Interior position.The edge of adjacent block provides the such mark point that can be readily recognized by reception decoding unit.Therefore it compiles Code unit will make basis to correspond to these neighboring edges, because of a block end and next with the coordinate of the first forecast sample The decoding unit that each marginal point at a BOB(beginning of block) can be received the vision signal including predicting unit 1501 is easily examined It measures.

Figure 16 illustrates how decoding unit can detect a method at edge.The method illustrated in Figure 16 can pass through It was found that there is two neighbouring samples previously rebuild the point at maximum difference to position marginal position in sample value.It is each to rebuild Sample have own correspondence sample value.Then because each adjacent block be assumed by uniquely predict and It rebuilds, it is possible to although it is assumed that the reconstruction sample in same shares similar sample value, belong to the sample of the block of separation This will not share similar sample value.Therefore the marginal point that the end in a block becomes the beginning of next contiguous block is inferred Place compares two neighbouring samples, and one of sample belongs to first piece and the second sample belongs to second piece, will be in sample value It is maximum poor to generate.Therefore in figure 16, decoding unit can calculate difference for all neighbouring samples, all neighbouring sample groups At the row for the sample for just lining up line (line up) on the top of current prediction unit 1601.Then, in decoding unit at two When finding maximum difference in the sample value between neighbouring sample, this is considered between two contiguous blocks, and there are edges Point.And correspondingly, this is that decoding unit may be considered the x of the first forecast sample C for being received with reconstruction state and sit Target point.Similarly, decoding unit will calculate difference for all neighbouring samples, and all neighbouring sample compositions are just current The left part of predicting unit 1601 lines up the row of the sample of line.Then, the sample value in decoding unit between two neighbouring samples The middle place for finding maximum difference, this is considered the point there are edge between two contiguous blocks.And correspondingly, this It is the point for the y-coordinate that decoding unit may be considered the first forecast sample C for being received with reconstruction state.

For determining that the another method of the coordinate of the first forecast sample transmitted in a manner of the state of rebuilding is decoding unit Predicting unit is received to parse the segmentation information for adjacent block.In general, the vision signal encoded by coding unit will be by video Data and identification information composition.Predicting unit is considered a part for video data, and segmentation information may be considered that It is a part for identification information.How each block of segmentation information identification video data is divided into the more fritter of video data. Such as tree-like piece (tree block) of data can be divided into multiple encoding blocks, then each encoding block can be divided into Multiple prediction block/units, then each prediction block/unit can be divided into multiple transform block/units etc..By video data It is divided into the non-square region of sample data also within the scope of the invention, geometry block segmentation information can also quilt in this case It include the part as identification information.

Under any circumstance, such segmentation information by as identification information a part and include the prediction of video data Unit transmits in video signals together.Therefore after receiving the vision signal including predicting unit and segmentation information, solution Code unit will parse the segmentation information to determine the cut size of each predicting unit of adjacent current prediction unit.This It is described in fig. 17.

In fig. 17, if decoding unit receives in current prediction unit 1701 and new frame just according to the present invention Plane mode handles prediction in current prediction unit 1701, then decoding unit will it is also received and parsed with adjoining work as The relevant segmentation information of block of preceding predicting unit 1701.Therefore identification is adjacent to the upper of current prediction unit 1701 by segmentation information Each of the video data in portion divides the size of block.And from this segmentation information, decoding unit can identify adjacent upper Segmentation between block NB1 and NB2 appear in where.And from this determination, decoding unit can follow obtained edge line To determine the x coordinate for the first current predictive sample C.Similarly, identification is adjacent to current prediction unit by segmentation information Each of 1701 video data of left part divides the size of block.And from this segmentation information, decoding unit can identify Segmentation between adjacent left part block NB3 and NB4 appear in where.Then by being aware of between adjacent left part block NB3 and NB4 Segmentation appear in where, decoding unit can follow obtained edge line determine for the first current predictive sample C y seat Mark.

Therefore it is selected as and the segmentation institute from adjacent block when by the position of the first predicting unit transmitted with reconstruction state When obtained edge line coincides, decoding unit can successfully identify what these edge lines were transmitted with determination with reconstruction state The position of first predicting unit.

The predicting unit for including the first forecast sample in reconstruction state is being received now, and is then being determined the After the position of one forecast sample, the remaining sample of new frame inner plane prediction mode according to the present invention being directed in predicting unit This prediction can be handled.Therefore in FIG. 18, it is seen that the first current predictive sample C is received with reconstruction state, And the position of the first current predictive sample C has been identified as having corresponding x coordinate and y-coordinate.In current prediction unit In 1801 and by making the first current predictive sample C be defined as its right lower quadrant sample, labeled as 1 block now by It is predicted for any one embodiment of new frame inner plane pattern of the invention.After the sample for predicting block 1, then Remaining current predictive sample in current prediction unit 1801 is blocks denoted as 2,3 and 4.These remaining samples can be by Any one embodiment of the new frame inner plane pattern of the present invention is predicted.It can be by rebuilding each block 2,3 and 4 first Interior right lower quadrant sample and this is realized for individually predicting each independent block 2,3 and 4 with reference to this right lower quadrant sample It is a.Or the remaining sample in block 2,3 and 4 can be predicted as a whole.Block 2,3 and 4 under any circumstance In remaining sample can be predicted according to any one embodiment of new frame inner plane pattern according to the present invention.

Or it alternatively, can be by replicating the reconstruction in any adjacent block (such as block 1) previously rebuild Sample carrys out the remaining sample in prediction block 2,3 and 4.

It, can be by referring to from being confirmed as the adjacent of advantage block (dominant block) or as another replacement The sample of block predicts rest block.Advantage block has and the most like sample properties of current block that are just predicted processing.This quilt It is shown in Figure 19, wherein current prediction block 1901 is just being predicted at present.For example purposes, each adjacent block is depicted as Various shades with grey, wherein dark shade indicates higher advantage.See that adjacent upper left quarter block has highest advantage, And therefore adjacent upper left quarter block predicts current prediction block 1901 by referenced.By referring to adjacent upper left quarter block, Ke Yitong It crosses the sample simply copied from adjacent upper left quarter block or is predicted by referring to the sample in adjacent upper left quarter block current Prediction block, to execute prediction processing according to any one available intra prediction mode.

In order to identify the most advantage adjacent block for current prediction block 1901, advantage block message will be by as identification information A part and include that the identification information is transmitted by the part as vision signal by coding unit.Then it is connect in decoding unit When receiving the vision signal including the advantage block message and current prediction block 1901, decoding unit will parse advantage block letter Which adjacent block breath to determine referenced for predicting current prediction block 1901.

Figure 20 is the video signal decoding list that can be used to execute new frame inner plane model prediction according to the present invention The schematic block diagram of member.

With reference to figure 20, decoding unit according to the present invention includes entropy decoding unit 2010, inverse quantization unit 2020, inverse transformation Unit 2025, deblocking filter element (deblocking filtering unit) 2030, decoding/reconstruction image store 2040, inter prediction unit 2050 and intraprediction unit 2060.

Entropy decoding unit 2010 to the video signal bitstream encoded by coding unit (not describing) by executing entropy decoding Come transformation coefficient, motion vector, the reference picture index of each block etc. for extracting video data.2020 inverse quantization of inverse quantization unit Transformation coefficient after entropy decoding, and then inverse transformation block 2025 restores original sample using the variation coefficient after inverse quantization Value.Deblocking filter element 2030 is applied to the block that each of video data encodes to reduce block distortion.By the picture of filtering It is stored in decoding picture storage unit 2040 to be exported or be used as reference picture.Inter prediction unit 2050 uses storage Reference picture in decoding picture storage unit 2040 and the intraframe prediction information delivered from entropy decoding unit 2010 (such as are joined Examine picture indices, motion vector etc.) predict current image.Particularly, the movement arrow of the block (i.e. adjacent block) of neighbouring current block Amount is extracted from vision signal.The motion vector of the prediction of current block can be obtained from adjacent block.Adjacent block may include Block at the left side, upside or upper right side of current block.It is, for example, possible to use the horizontal component of the motion vector of adjacent block and The mean value of vertical component obtains the motion vector of the prediction of current block.Alternatively, the left part block in current block has with interframe mould In the case of at least one prediction block of formula coding, it can be come using the motion vector of the prediction block at the upside of current block Obtain the motion vector of the prediction of current block.There is at least one prediction block with coded in inter mode in the upper mass of current block In the case of, the motion vector of the prediction of current block can be obtained using the motion vector of the prediction block at the leftmost side. In the case that block at upside and right side among adjacent block, positioned at current block is located at other than the boundary of picture or band, The motion vector of the prediction of current block can be set to the motion vector of left part block.Work as if existing to have among adjacent block One block of preceding piece of same reference picture indices, then the motion vector of the block can be used for motion prediction.

Intraprediction unit 2060 executes intra prediction by referring to the sample previously rebuild in current image. Reconstruction sample in current image may include that deblocking filters the sample not being applied to.Then the current image by that will predict It is added together to rebuild original image with the residual error exported from inverse transformation block 2025.Each of video data is predicted single Member will handle the every of current prediction unit by the new frame inner plane model prediction according to the present invention of intraprediction unit 2060 A current predictive sample.Then by mutually merging the sample of prediction to rebuild with the residual error exported from inverse transformation block 2025 The current predictive sample of prediction.

Figure 21 is the block diagram of the alternative view of the illustrated decoding units of Figure 20.Figure also comprises block type determination unit 2100 and reconstruction unit 2170.Block type determination unit 2100 determines that current prediction unit is in inter-prediction type unit or frame Forecasting type unit.If block type determination unit determines that current prediction unit is inter-prediction type unit, current prediction unit Inter prediction unit 2150 will be sent to.And if block type determination unit determines that current prediction unit is intra prediction type Unit, then current prediction unit will be sent to intraprediction unit 2160.

Figure 21 also illustrates intraprediction unit 2160 by predicted size determination unit 2161 and prediction mode obtaining unit 2162 compositions.Predicted size determination unit 2161 can be encoded into vision signal and by decoding list by parsing by coding unit The identification information that member receives determines the size for the current prediction unit just predicted by intraprediction unit 2160, or by straight Grounding current prediction unit determines its size.Therefore according to first method, encoded video signal and adjoint identification The coding unit of information is by the dimension information of each predicting unit of the video data including being encoded into vision signal.Then it solves Code unit only needs to parse identification information from video information to determine the size of each predicting unit that it is received.According to Two methods, coding unit include the dimension information of each predicting unit for the video data for being encoded into vision signal with being not apparent from. Alternatively, the predicted size determination unit 2161 of decoding unit, which is assigned, handles each predicting unit to determine each prediction The work of the size of unit.It should be noted that according to first method, the reality of the identification information for determining each predicting unit Border parsing can be handled by visible predicted size determination unit 2161 in fig. 20 or entropy decoding unit 2010.

Prediction mode obtaining unit 2162 is assigned parsing and is included in the identification information in vision signal with determining suitable When intra prediction mode to be applied to the work for each current prediction unit just predicted by intraprediction unit 2160.Cause This believes the signaling for handling included identification information in vision signal according to the present invention, prediction mode obtaining unit 2162 Breath, and determine that the new frame inner plane pattern for prediction should be applied to current prediction unit from the signaling information.

And once being passed through in frame according to the intra prediction mode appropriate identified by prediction mode determination unit 2162 Predicting unit 2160 has been correctly predicted current prediction unit, just will rebuild current prediction unit by reconstruction unit 2170 Forecast sample.Reconstruction unit 2170 can be rebuild by mutually merging them with the residual values obtained from inverse transformation block 2125 The sample of prediction.

Industrial applicibility

Although herein with reference to the preferred embodiment of the present invention invention has been described and for example, but Be to those skilled in the art it is evident that without departing from the spirit and scope of the present invention, can be with Various modifications and variations are made in the present invention.It is therefore intended that the present invention cover fall into appended claims and they etc. The modifications and variations of the invention in the range of jljl.

Although herein with reference to the preferred embodiment of the present invention invention has been described and for example, but Be to those skilled in the art it is evident that without departing from the spirit and scope of the present invention, can be with Various modifications and variations are made in the present invention.It is therefore intended that the present invention cover fall into appended claims and they etc. The modifications and variations of the invention in the range of jljl.It can be answered in coding, transmission, decoding and processing digital video data With the present invention.

Claims (12)

1. a kind of method that vision signal is handled by decoding apparatus, the method includes：

The intra prediction mode of current block is obtained by decoding apparatus；

Obtained intra prediction mode is used, predicts to be included in by the decoding apparatus described current in the block current Sample,

Wherein, predict that the current sample includes：

The first linear interpolation is executed in the horizontal direction of the first reference sample and third reference sample by the decoding apparatus, with And the second linear interpolation is executed in the vertical direction of the second reference sample and the 4th reference sample,

Wherein, first reference sample is and the left part of the current block adjoining with Y coordinate identical with the current sample Adjacent sample, second reference sample are and the top of the current block adjoining with X-coordinate identical with the current sample Adjacent sample, the third reference sample are the samples obtained from the upper right quarter block abutted with the current block and are positioned in Have in the current block the most right sample of Y coordinate identical with the current sample and the 4th reference sample be from With the current block adjoining lower left quarter block obtain sample and be positioned in the current block have and the current sample This identical X-coordinate most plays sample, and

It is generated by the average value generated from first linear interpolation of the decoding apparatus and from second linear interpolation Value；And

The current block is rebuild using the sample of the prediction by the decoding apparatus,

Wherein, the upper right quarter block is the right part adjacent block of the top adjacent block of the current block and the lower left quarter block is The lower part adjacent block of the left part adjacent block of the current block.

2. according to the method described in claim 1, wherein, the value of the third reference sample is arranged in the upper right quarter block Lower left corner sample value.

3. according to the method described in claim 1, wherein, the value of the 4th reference sample is arranged in the lower left quarter block Upper right corner sample value.

4. a kind of method that vision signal is handled by decoding apparatus, the method includes：

The intra prediction mode of current block is obtained by the decoding apparatus；

Obtained intra prediction mode is used, predicts to be included in by the decoding apparatus described current in the block current Sample,

Wherein, predict that the current sample includes：

By the decoding apparatus execute first sample, the second sample, third sample and the 4th sample bilinear interpolation,

Wherein, the first sample is adjacent with the left part of current block adjoining of Y coordinate identical with the current sample Sample, second sample be with the top adjacent sample of the current block adjoining with X-coordinate identical with the current sample, The third sample is the sample obtained from the upper right quarter block abutted with the current block and is positioned in the current block Most right sample and the 4th sample with Y coordinate identical with the current sample are abutted from the current block The sample that obtains of lower left quarter block and being positioned in the current block there is X-coordinate identical with the current sample most Lower sample；And

The current block is rebuild using the sample of the prediction by the decoding apparatus,

Wherein, the upper right quarter block is the right part adjacent block of the top adjacent block of the current block and the lower left quarter block is The lower part adjacent block of the left part adjacent block of the current block.

5. according to the method described in claim 4, wherein, the value of the third sample is arranged to the left side in the upper right quarter block The value of inferior horn sample.

6. according to the method described in claim 4, wherein, the value of the 4th sample is arranged to the right side in the lower left quarter block The value of upper angle sample.

7. a kind of equipment of processing vision signal, the equipment include：

Obtain device, the intra prediction mode for obtaining device and being used to obtain current block；

Prediction meanss, the prediction meanss are for using obtained intra prediction mode to predict to be included in the current block In current sample,

Wherein, predict that the current sample includes：

The first linear interpolation is executed in the horizontal direction of the first reference sample and third reference sample, and in the second reference sample The second linear interpolation is executed with the vertical direction of the 4th reference sample,

Wherein, first reference sample is and the left part of the current block adjoining with Y coordinate identical with the current sample Adjacent sample, second reference sample are and the top of the current block adjoining with X-coordinate identical with the current sample Adjacent sample, the third reference sample are the samples obtained from the upper right quarter block abutted with the current block and are positioned in Have in the current block the most right sample of Y coordinate identical with the current sample and the 4th reference sample be from With the current block adjoining lower left quarter block obtain sample and be positioned in the current block have and the current sample This identical X-coordinate most plays sample, and

The average value generated from first linear interpolation and the value generated from second linear interpolation；And

Reconstructing device, the reconstructing device are used to rebuild the current block using the sample of the prediction,

Wherein, the upper right quarter block is the right part adjacent block of the top adjacent block of the current block and the lower left quarter block is The lower part adjacent block of the left part adjacent block of the current block.

8. equipment according to claim 7, wherein the value of the third reference sample is arranged in the upper right quarter block Lower left corner sample value.

9. equipment according to claim 7, wherein the value of the 4th reference sample is arranged in the lower left quarter block Upper right corner sample value.

10. a kind of equipment handling vision signal by decoding apparatus, the equipment include：

Obtain device, the intra prediction mode for obtaining device and being used to obtain current block；

Prediction meanss, the prediction meanss are for using obtained intra prediction mode to predict to be included in the current block In current sample；

Wherein, predict that the current sample includes：

First sample, the second sample, third sample and the are executed by the decoding apparatus

The bilinear interpolation of four samples,

Wherein, the first sample is adjacent with the left part of current block adjoining of Y coordinate identical with the current sample Sample, second sample be with the top adjacent sample of the current block adjoining with X-coordinate identical with the current sample, The third sample is the sample obtained from the upper right quarter block abutted with the current block and is positioned in the current block Most right sample with Y coordinate identical with the current sample, and

4th sample is the sample obtained from the lower left quarter block abutted with the current block and is positioned in described current Have X-coordinate identical with the current sample in block most plays sample；And

Reconstructing device, the reconstructing device are used to rebuild the current block using the sample of the prediction,

Wherein, the upper right quarter block is the right part adjacent block of the top adjacent block of the current block and the lower left quarter block is The lower part adjacent block of the left part adjacent block of the current block.

11. equipment according to claim 10, wherein the value of the third sample is arranged in the upper right quarter block The value of lower left corner sample.

12. equipment according to claim 10, wherein the value of the 4th sample is arranged in the lower left quarter block The value of upper right corner sample.