The main work and innovation1 In general , a image compression method has different effect to different image . Some are fit for image which has much high frequency . Some are fit for image which has much low frequency .This paper analysis the applicability of fractal algorithm . In this dissertation , an improved algorithum is given . The basic algorithum without eight change and the joint use of quantitative coding , The compression ratio and PSNR can be adjusted , and it can get more quickly speed of coding .2 To a group of exact fractal code , the decoding image can be any resolution .With this characteristic ,choose the proper domain block and range block,this paper get an algorithum which can get higher decoding PSNR and speed than the basic fractal algorithum.3 Give a new method to calculate the scale factor . The calculation of basic algorithum is complex and enormous . The factor of scale is an important variable of the basic algorithm. Now there are two methods to calculate the factor of scale .A new method was given to calculate the factor of scale. The calculation load and complexity are reduced by the new method. Compared with the basic algorithm , the method can reduce coding time.4 The basic fractal algorithum is based on the Collage theorem and contraction mapping theorem . A mathematic model based on basic fractal algorithum is given .

本文的主要工作及創(chuàng)新點(diǎn)主要包括以下幾點(diǎn)：1一般情況下，一種圖像壓縮的方法對(duì)不同特點(diǎn)的圖像精品丝袜国产在线精品不卡，壓縮效果會(huì)有所不同男人网站在线观看网站不卡，本文利用分形壓縮編碼對(duì)不同特點(diǎn)的圖像進(jìn)行編碼，分析了分形編碼對(duì)不同圖像的編碼適用性免费观看黄网站不卡影院视频，利用去掉8種變換的分形編碼算法與簡(jiǎn)單的均勻量化編碼方案相結(jié)合幸福宝app官网在线入口，得到了一種可以調(diào)節(jié)壓縮比與解碼質(zhì)量的分形編碼方案，該提高編碼速度6倍以上香港性爱视频一区二区三区。2分形編碼的特點(diǎn)之一是分形解碼的分辨率無(wú)關(guān)性人人插视频激烈，即對(duì)于一組分形編碼可以將其解碼到任意分辨率下，本文利用分形編碼的這一特點(diǎn)Aa在线免费观看网址，結(jié)合不同的量化編碼方案午夜理理伦电影A片无码，選擇合適的定義域塊與值域塊及適當(dāng)?shù)木幗獯a分辨率，得到了一種提高解碼質(zhì)量美女黄禁止18以下看尿口网站，編碼速度提高12倍以上的加速算法又黄又爽免费网站。3比例因子是基本分形算法中的一個(gè)重要變量，目前有兩種計(jì)算比例因子的方法黄色视频页面入口，文中給出了一種新的求比例因子的方法蜜臀免费AV，該方法簡(jiǎn)化了求比例因子的計(jì)算，從整體上減小了基本分形算法的計(jì)算量日本h视频，簡(jiǎn)化了算法4分形壓縮的數(shù)學(xué)基礎(chǔ)是不動(dòng)點(diǎn)定理與拼貼定理变态欧美亚洲日韩女优电影在线观看，本文根據(jù)基本的自動(dòng)分形編碼方法，建立數(shù)學(xué)模型對(duì)其進(jìn)行推導(dǎo)日本网站中文字幕，得到了用普通數(shù)學(xué)的極限理論解釋分形編碼的數(shù)學(xué)表達(dá)式久久久无码精品亚洲日韩一区二区，從而對(duì)由基本分形編碼得到的解碼圖像中的像素點(diǎn)的值給出了確定的表達(dá)式。

MWM engine makes the conversion among two-stroke mode, four-stroke mode and six-stroke mode of one engine come true in theory, filles in the blank with 1/3 which is the ratio of total strokes to working strokes in single working cycle of engine, possessing the continuous variable compression ratio of a certain range at the same time, combines the advantages of two-stroke engine and four-stroke engine, expandes the working range of engine greatly.

MWM發(fā)動(dòng)機(jī)在理論上實(shí)現(xiàn)了一臺(tái)發(fā)動(dòng)機(jī)在二沖程中文字字幕在线永久视频、四沖程與六沖程工作模式之間的相互轉(zhuǎn)換色免费网站，填補(bǔ)了發(fā)動(dòng)機(jī)單工作循環(huán)作功行程數(shù)與總行程數(shù)比值中1/3的空白，同時(shí)具備一定范圍連續(xù)可變的壓縮比欧美高清精品视频在线一区二区，整合了二沖程與四沖程發(fā)動(dòng)機(jī)的優(yōu)點(diǎn)欧洲无码一区二区，拓展了發(fā)動(dòng)機(jī)的工作范圍。

Stirling engines generally operate with low compression ratios, even if they respond simultaneously to a thermal compression ratio and a geometric compression ratio (both are time variable, and the product of both ratios gives the real ratio).

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variable compression ratio：可變壓縮比

variable charge 可變費(fèi)用 | variable compression ratio 可變壓縮比 | variable condenser 可變電容器

variable compression ratio：可變壓縮比(縮寫(xiě)VCR)

variable-compression-ratio engine 可變壓縮比發(fā)動(dòng)機(jī) | variable-compression ratio 可變壓縮比(縮寫(xiě)VCR) | variable-compression engine 可變壓縮比發(fā)動(dòng)機(jī)

variable composi-tion zone：變異成分層

"可變?nèi)萘?quot;,"variable capacity" | "變異成分層","variable composi-tion zone" | "可變壓縮比動(dòng)力機(jī)","variable compression ratio engine"