compressed adj. 1.壓縮過的;(文字)簡練的。 2.【植物;植物學(xué)】(左右)扁平的;【動物;動物學(xué)】側(cè)扁的,寬度大于長度的。 compressed air 壓縮空氣。 compressed wallboard 壓扁壁板。
code n. 1.法典;法規(guī)。 2.規(guī)則,準則;(社會、階級等的)慣例,習(xí)俗,制度。 3.(電)碼,代碼,密碼,暗碼;代號,略號,暗號。 4.【生物學(xué)】遺傳(密)碼。 the civil [criminal] code民[刑]法典。 the moral code道德準則。 code of signals 信號密碼(本)。 code of the school 校規(guī)。 code and conventions 規(guī)章制度。 C- Napoléon 拿破侖法典。 C- of Hammurabi (古代巴比倫的)漢穆拉比法典。 code of honour 社會禮法;決斗慣例。 code of written law 成文法典。 the International Code 國際電碼。 the Morse code 摩爾斯電碼。 vt. 1.把…編成法典[法規(guī)]。 2.把…譯成[編成]電碼;編(碼);譯(碼)。 n. -r 【自動化】編碼裝置;【電訊】記發(fā)器。
Information security technology and multimedia communication technology are hotspots in the information science technology , and secrecy coding and compress coding are keys to realize information security and multimedia communication 信息安全技術(shù)和多媒體通信技術(shù)是當(dāng)今信息科學(xué)研究領(lǐng)域的熱點課題,而保密編碼和壓縮編碼則是實現(xiàn)信息安全和多媒體通信的關(guān)鍵。
Zerotree makes use of the relativity of child band , which is a meaningful breakthrough based on wavelet image compress coding . ezw and spiht algorithms based on zerotree structure , which enhance the image compress ratio largely , are discussed and analyzed in detail 在小波系數(shù)的壓縮方法中,小波系數(shù)的零樹方法充分利用了相應(yīng)子帶間的相關(guān)性,是基于小波圖像壓縮編碼的一個有意義的突破。
This project is one of the subprojects of high - speed wireless video transmission system . using dsp technology and relevant asic device to realize motion picture ' s compress code and decompress decode in real time is its main task 本課題是高速無線視頻傳輸系統(tǒng)項目的一個子課題,屬于信源壓縮編碼和信宿解壓縮解碼部分,主要任務(wù)就是運用dsp技術(shù)及相關(guān)的asic器件實現(xiàn)實時的運動圖像壓縮編解碼。
This paper introduces a method to realize stand - alone video data ' s compress code and decompress decode and reliable transmission of video data , and expounds the design processing and hardware and software development 本文介紹了一種實現(xiàn)脫機視頻壓縮編碼和解壓縮解碼及視頻數(shù)據(jù)可靠通信的方法,詳細論述了作為高速無線視頻傳輸系統(tǒng)核心部分的運動圖像實時壓縮編碼和解壓縮解碼的軟硬件設(shè)計和研制開發(fā)過程。
The traditional image processing technology mainly concentrates in the image to obtain , transformation , strengthen , , compress coding etc , and along with new tool , the new method appears continuously , these picture processing technology also develops continuously 傳統(tǒng)的圖像處理技術(shù)主要集中在圖像的獲取,變換,增強,恢復(fù),壓縮編碼的方面,并且隨著新工具,新方法的不斷出現(xiàn),這些圖像處理技術(shù)也在不斷發(fā)展。
The survey of vidio compressed coding is introduced in this paper at first . then the vidio compressed method based on transform coding and the content of mpeg - 2 standard are presented . the hardware realization method of mpeg - 2 vidio compressed decoder is given in detail 本文首先介紹視頻壓縮編碼發(fā)展的概況;然后介紹基于變換編碼的視頻壓縮方法,并簡要闡述mpeg - 2標(biāo)準的內(nèi)容;隨后給出了一種基于專用芯片的mpeg - 2視頻壓縮編解碼器硬件實現(xiàn)方法。
The subimage of the lowest frequency ( ll4 ) is carried out lossless compressed coding ; 2 the subimages on diagonal direction of the highest frequency ( hhl ) is abandoned and is not carried out coding , because it is of great probability for zero , and it little affects visual 其主要包括對最低頻子帶單獨進行無損壓縮編碼,對最高頻對角線方向子帶舍去不編碼。對其余各子帶根據(jù)視覺特點的不同,分別分配不同的比特數(shù)并按其進行零樹量化,最后再游程編碼。
It is significant in both theoretics and practicality to combine the motion estimate technique and research of data compressed coding to solve the problem of huge information data in video , which is an important question for discussion in image processing field and image communication field 利用運動估計技術(shù),結(jié)合對數(shù)據(jù)壓縮編碼的研究,解決視頻消息數(shù)據(jù)量大的問題,具有重要的理論和實際意義,是一個圖像處理領(lǐng)域和圖像通信領(lǐng)域極其重要的研究課題。
With the rapid development of communications and internet technology , especially the recent 20 years , speech compressing coding technology has been widely used and plays a very important role in mobile communications , satellite communications , multimedia communications and ip - phone communications 隨著通信、計算機網(wǎng)絡(luò)等技術(shù)的飛速發(fā)展,尤其是最近20年,語音壓縮編碼技術(shù)在移動通信、衛(wèi)星通信、多媒體技術(shù)以及ip電話通信中得到普遍應(yīng)用,并起著舉足輕重的作用。
In this paper , we briefly introduced the performance of wave coding and vocoder , emphasizedly studied the principle and performance of variable rate vocoder q4401 , including the internal construction and pins , qcelp coder & vocoder , pcm interface , cpu interface initialization process , command format and so on . we also designed a application circuit , with the experiment validated its performance . in this design , the pcm interface chip is tp3057 , it was used to finish a / d transform , the compress coding was finished by q4401 , the initialization and control were accomplished by 8051 singlechip 重點是研究變速率語音編解碼芯片q4401的工作原理及性能。其中包括q4401的內(nèi)部結(jié)構(gòu)及管腳、 qcelp編碼方式、 pcm接口、 cpu接口、初始化過程、命令格式等,并在此基礎(chǔ)上,設(shè)計一個實際的應(yīng)用電路,通過實驗,驗證其性能。在設(shè)計中用pcm接口芯片tp3057來完成從模擬信號到數(shù)字信號的轉(zhuǎn)換,再由q4401進行壓縮編碼,對q4401的初始化及控制由8051單片機來完成。