幀點陣 的英文怎麼說
中文拼音 [zhèngdiǎnzhèn]
幀點陣
英文
frame lattice-
Using 4d coordinate to express the convert matrix of perspective, it is predigested to calculate z coordinate through changing to one. the coordinates of pixels in screen correspond with the z coordinate of object surface are modified by adding the numbers of buffer. the method of 3d perspective using directx buffer is improved
使用四維坐標來表示物體的透視變換矩陣，通過對該矩陣進行歸一化處理，簡化了z坐標的計算；通過增加幀緩沖區的數量，修正了物體表面z坐標在屏幕上對應點的坐標值，對利用directx的緩沖區進行物體三維透視的方法進行了改進，提高了透視精度。The new algorithm has three characters : first is that the new algorithm is on the basis of super frame which include 3 continuous simple frames in melp algorithm, the algorithm deal with parameters of a super frame by the mode of the super frame. secondly, two algorithms are introduced for improving vector quantization quality of line spectral frequency ( lsf ) parameter. one is swithed - adaptive inter - frame vector prediction ( sivp ), which can get rid of the correlation between neighboring frames effectively, the other is joint codebook optimization for multi stage vector quantization ( jco - msvq ), which can improve performance of codebook
第二是在製作線譜對參數（ lsf ）矢量量化碼本時，引入了目前提高lsf碼本性能的兩個方法:在利用重點幀對非重點幀作預測時，借鑒自適應幀間矢量量化（ sivp ）去除相關性演算法的優點，提出了以固定矩陣去除相關性的方法，有效的控制了預測后殘差的動態范圍，提高了對殘差矢量量化的精度;採用聯合碼本優化多級矢量量化演算法（ jco - msvq ） ，改良多級矢量量化碼本的性能。
分享友人