QccPackSPIHT-0.54-1 (release 2007-04-30) The Set Partitioning in Hierarchical Trees (SPIHT) algorithm for wavelet-based image coding .
標(biāo)簽: QccPackSPIHT Partitioning Hierarchical release
上傳時(shí)間: 2014-02-15
上傳用戶:lacsx
QccPackSPECK-0.54-1 (release 2007-04-30) is The SET-Partitioning Embedded Block (SPECK) algorithm for wavelet-based image coding.
標(biāo)簽: SET-Partitioning QccPackSPECK algorithm Embedded
上傳時(shí)間: 2013-12-04
上傳用戶:silenthink
遙感圖像在人類生活和軍事領(lǐng)域的應(yīng)用日益廣泛,適合各種要求的遙感圖像編碼技術(shù)具有重要的現(xiàn)實(shí)意義。基于小波變換的內(nèi)嵌編碼技術(shù)已成為當(dāng)前靜止圖像編碼領(lǐng)域的主流,其中就包括基于分層樹集合分割排序(Set Partitioning inHierarchical Trees,SPIHT)的內(nèi)嵌編碼算法。這種算法具有碼流可隨機(jī)獲取以及良好的恢復(fù)圖像質(zhì)量等特性,因此成為實(shí)際應(yīng)用中首選算法。隨著對(duì)圖像編碼技術(shù)需求的不斷增長,尤其是在軍事應(yīng)用領(lǐng)域如衛(wèi)星偵察等方面,這種編碼算法亟待轉(zhuǎn)換為可應(yīng)用的硬件編碼器。 在靜止圖像編碼領(lǐng)域,高性能的圖像編碼器設(shè)計(jì)一直是相關(guān)研究人員不懈追求的目標(biāo)。本文針對(duì)靜止圖像編碼器的設(shè)計(jì)作了深入研究,并致力于高性能的圖像編碼算法實(shí)現(xiàn)結(jié)構(gòu)的研究,提出了具有創(chuàng)新性的降低計(jì)算量、存儲(chǔ)量,提高壓縮性能的算法實(shí)現(xiàn)結(jié)構(gòu),并成功應(yīng)用于圖像編碼硬件系統(tǒng)中。這個(gè)方案還支持壓縮比在線可調(diào),即在不改變硬件框架的條件下可按用戶要求實(shí)現(xiàn)16倍到2倍的壓縮,以適應(yīng)不同的應(yīng)用需求。本文所做的工作包括了兩個(gè)部分。 1.一種基于行的實(shí)時(shí)提升小波變換實(shí)現(xiàn)結(jié)構(gòu):該結(jié)構(gòu)同時(shí)處理行變換和列變換,并且在圖像邊界采用對(duì)稱擴(kuò)展輸出邊界數(shù)據(jù),使得圖像小波變換時(shí)間與傳統(tǒng)的小波變換相比提高了將近2.6倍,提高了硬件系統(tǒng)的實(shí)時(shí)性。該結(jié)構(gòu)還合理地利用和調(diào)度內(nèi)部緩沖器,不需要外部緩沖器,大大降低了硬件系統(tǒng)對(duì)存儲(chǔ)器的要求。 2.一種采用左遍歷的比特平面并行SPIHT編碼結(jié)構(gòu):在該編碼結(jié)構(gòu)中,空間定位生成樹采用深度優(yōu)先遍歷方式,比特平面同時(shí)處理極大地提高了編碼速度。
上傳時(shí)間: 2013-06-17
上傳用戶:abc123456.
a set of cross-platform tools that is useful for programming the GBA written in Java.
標(biāo)簽: cross-platform programming written useful
上傳時(shí)間: 2015-01-06
上傳用戶:yd19890720
S3C44BOX的BIOS??墒褂玫拿睿篽elp --- show help ? --- = help date --- show or set current date time --- show or set current time setweek --- set weekday clock --- show system running clock setmclk --- set system running clock setbaud ------ set baud rate ipcfg ------ show or set IP address load ------ load file to ram comload ------ load file from serial port run ------ run from sdram prog ------ program flash copy ------ copy flash from src to dst address boot ------ boot from flash backup ------ move bios to the top of flash md ------ show memory data move ------ move program from flash to sdram
標(biāo)簽: help date show current
上傳時(shí)間: 2015-01-22
上傳用戶:ANRAN
劉儒勛運(yùn)動(dòng)界面追蹤-level set
上傳時(shí)間: 2014-08-29
上傳用戶:釣鰲牧馬
level set matlab code
標(biāo)簽: matlab level code set
上傳時(shí)間: 2015-02-06
上傳用戶:aig85
md5加密程序 C++ This a class which encapsulates a set
標(biāo)簽: encapsulates class which This
上傳時(shí)間: 2014-12-06
上傳用戶:hzy5825468
快速排序! 經(jīng)典的算法。 provides methods to sort a set of objects with quicksort algorithm.
標(biāo)簽: algorithm quicksort provides methods
上傳時(shí)間: 2014-01-08
上傳用戶:ryb
eGroupWare is a multi-user, web-based groupware suite developed on a custom set of PHP-based APIs. Currently available modules include: email, addressbook, calendar, infolog (notes, to-do s, phone calls), content management, forum, bookmarks, wiki
標(biāo)簽: eGroupWare multi-user developed PHP-based
上傳時(shí)間: 2015-02-20
上傳用戶:hphh
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