range encoding 中文意思是什麼
range encoding
解釋
區間編碼-
On the basis of the authors ’ results published in this journal [ 67 ], this paper further proposed two strategies which improved both quality and speed of fractal encoding : one, a priori adding additive white gaussian noise into the image being encoded to reduce the domain blocks that are unlikely to meet the constraint on contrast scaling factors ; the other, range blocks with small standard deviations are directly approximated by the constant block ( i. e., all the
在筆者原有結果[計算機模擬， no . 8 ， 2004 ]的基礎上，本文提出進一步提高解碼圖像質量和編碼速度的方案:一是預先在待編碼圖像中添加高斯白噪聲以進一步減少不滿足對比度因子約束的domain塊的數目;二是對小方差range塊直接用其均值塊代替以進一步加快編碼速度。 -
Differential gps has become the prime and essential positioning system for many applications. this paper introduces the principles of the differential global position systems. clarifies the arithmetic of the pseudo - range dgps. by the high - class differential reference station receiver called javad receiver which being used in our laboratory now, some necessary work has been done : data digging from javad receiver ; data decoding, data encoding, and data transmission through the net and pc serial port ; further more, the gps receiver interface language has been analyzed to control differential reference station receiver
因此，差分gps技術（ dgps ）應運而生，並得到飛速發展，其市場前景看好。 dgps在許多定位應用中已經成為重要的定位系統，本文論述了差分gps的原理，闡明了偽距差分的基本原理與演算法：在實踐上針對實驗室現有的比較先進的javad差分參考臺進行了偽距差分修正量數據的提取、數據解碼、數據編碼、數據的網上傳輸。 -
However, there ' s a especially unsatisfying problem in this method : too long encoding time, mainly because of the considerable number of domain blocks to compare with for each range block in encoding phase, which, in fact, prevent fractal image compression from becoming a practical method for image compression, hence fast encoding has become a hot issue in fractal image compression
但是，這種方法存在一個最大的問題：編碼時間過長，主要是因為編碼時定義域塊的搜索量非常可觀。這實際上已成為了該方法走向高效能實用化的最主要障礙，因此分形編碼加速方法已成為了近些年來分形壓縮的一個研究熱點。 -
Note that in fractal encoding, each range block is to compare with domain blocks after some grey - level affine map. hence we first put forward a kind of image quadrature invariant of affine maps above, which can be thought of a generalization of mario feature
由於在分形編碼時值域塊實際上是與經過灰度仿射變換之後的定義域塊進行比較，因此我們首先提出了一種在灰度仿射變換下保持不變的圖像矩不變量，它可看作是mario特徵的推廣。
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