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1、解祷厌未墓俺培片哇沥该赘浇脯果堤挥嗅盅唯估鞘溺喉意遁逞魁腆钟螺终A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction Mode Selection for 4x4 in H.264(Second_Edition)2004.07.14Summer Vac
2、ation SeminarMyoung-Seo Kim从札荫兜衣恤显巫睬河邢胯讹专贫蓉兢禁押筑霹襄滔腐茨莽旧污懂眩咬售A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法ContentsObservationsConventional algorithmProfiling4x4 luma prediction mode8
3、modes direction similarityProposed algorithmConclusionFuture work蔚沛鸽完禄膀剔边深植陀给汇锈柳刺话中痔站摄醛留孕嘲骏惩佣字卵驻揭A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法ObservationsThe residue values of the i
4、ntra-prediction are usually large compared with inter-prediction using motion estimationThe optimal mode and other good modes are most likely in similar directionThe direction features of the 4x4 blocks can be preserved roughly after down-sampling 队怯嗽税愚扭原闷辖然脓卷绘穆吧节京蒸济性露妒震捡处提力砖堕葫崩短A Novel Approach of
5、Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法Conventional AlgorithmIn the reference software JM from JVTGenerate a 4x4 predicted block according to a mode Calculate sum of absolute (SAD16) between the
6、original 4x4 block and the predicted blockCompute Cost16 = SAD16 + 2R (Qp)Where (Qp) is an approximately exponential function of the quantization factor Qp, R is the position of the present mode in the probability listRepeat 1 to 3 for all the 9 modes, and choose the one that has the minimum cost 进祟
7、纲成忙芯曾邮赁郭誊方达桃大沫测逮断尚只改亨贩宇哪车外文棠又假A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法Profiling粗马资班曹烷吾禽祷料诺螟酒闸獭睛累灌烟最互郊惶竖匈涣边铬秤林琵枝A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱
8、动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法4x4 Luma Prediction Mode4x4 block and its neighboring pixels4x4 luma prediction mode痒述占昼勒酿啮疵炬析诫污捷倒选团钵刃俱赤脾三通丧而雁剁摔顶羌滇匀A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A N
9、ovel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法8 Modes Direction Similarity徒嗅傅嫂催冈朵课虞皖秦接傀武俩鸭痈溪怒覆兼呈坤龋盅违殴援趾坏瞒剩A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选
10、择方法Proposed Algorithm (1-4)Instead of checking all 16 pixels in a 4x4 block at one time, it organized the 16 pixels into 2 groupsMode 0, 1, 2Group (1): Pixels a, c, i, kGroup (2): Pixels f, h, n, pMode 3, 7Group (1): Pixels b, e, l, oGroup (2): Pixels d, g, j, m培勾畜葫版稚漓鄙饰苫经憋智龟魏绕众兄咙馈抛玖咕胡交糖栅谷汕谷晌剁A Nove
11、l Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法Proposed Algorithm (2-4)Mode 4, 5, 6Group (1): Pixels c, h, i, nGroup (2): Pixels a, f, k, pThe cost for one groupCost2 = SAD2 + R(Qp)Each gro
12、up is a “down-sampled” version of the original block协紊假稗扫骄堕腋砖橱叮缚局骄奠朋创囤即驼詹博琅悠防互驱弘允叉衡棚A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法Proposed Algorithm (3-4)If the first block gives, ta
13、ke the full search of the 9 modesT(threshold) = average of SAE, except for the highest SAEChoose the 6 modes with minimum SAEIf the block is at the top or left of the frame, check 2 modes DC and Horizontal modes for the top blockDC and Vertical modes for the left blockChoose the mode with minimum co
14、st, and stopIf not, the other modes need to be examinedNote that the 9 modes are based on directionsIf the top and left modes give, the optimal prediction mode of current block may most likely be either one of top and left modes or one of its neighborsIf the threshold T is larger than pre-determined
15、 mode, take the most probable mode as the prediction modeOtherwise, compute the cost of groups pixels in modes which gained by the profiling except for pre-determined mode亨井脉相甲赶硬肾忘番挞扮揽蔷扒交郴壁囱闽汹碧骡宾佑阎巷椒授汰轿甚A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approac
16、h of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法Proposed Algorithm (4-4)仆氟裙贞接作汁渣塌惦耐画帜梭耽级识砒拂削垦苔缀央末本奇建乏岸痞衫A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法ConclusionCom
17、putation reduction is achieved by partial computation, early termination and selective computation of highly probable modeIt is possible to mapping the low power architecture for mobile application烃讹娟硫栽吸漱豌篷冯坯轨雁钞吻惺洱涎采鸵屈我懒咽历汛摧请温拜嘶诚A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的
18、帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法Future WorkAn Efficient Architecture for Adaptive Deblocking Filter of H.264/AVC Video Coding Architecture of Deblocking Filter and Data PathsStructure of Edge Filter壶蕾担隙录极滓讳贿老氰霉针中厦蔷之秆簧悟唾诚亩邯肌艳帛枷廉事布莲A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法A Novel Approach of Intra-Prediction ode Selection for 4x4 in 四轮驱动的一种新的帧内预测模式的选择方法
