A content-based variable-size block partition method for h 264標(biāo)準(zhǔn)的一種基于內(nèi)容的變尺寸宏塊分割方法
1 2 specification for design and construction of middle-sized block buildings 中型砌塊建筑設(shè)計(jì)與施工規(guī)程
Analysis on crack in the concrete hollow pint sized block building and it's construction technology 混凝土小型空心砌塊建筑裂縫的情況分析及施工技術(shù)
At last, these functions are used to advance sha-1, and a new hash function called csha is proposed . unit 4 : at present, cryptography hash algorithm for applications such as digital fingerprinting of messages, message authentication, and key derivation is commonly iterative processed which hash inputs of arbitrary length by processing successive fixed-size blocks of the input . the iterative process is commonly serial construction 在系統(tǒng)分析了雜湊函數(shù)機(jī)制后,我們利用j.seberry等人提出的方法,構(gòu)造出了同時(shí)滿足平衡性、高度非線性及嚴(yán)格雪崩特性的并且容易實(shí)現(xiàn)的雜湊輪函數(shù),并利用這些雜湊輪函數(shù),在原sha-1雜湊函數(shù)的基礎(chǔ)上,設(shè)計(jì)出了新的雜湊算法csha。
Abstract : the paper analyzes work coordination between r . c walls and block walls in small size block residence houses with rooms of large width and length up to seven floors in district being seven degrees of intensity . the mechanical behaviour and role of r . c . wall in the system of block structure are also researched in this thesis 文摘:通過對(duì)7度區(qū)7層開間大進(jìn)深砼小型砌塊住宅砌塊墻與鋼筋砼墻體系協(xié)同工作的分析,研究了砼墻在砌塊結(jié)構(gòu)體系中的受力性能和所起的作用。
One of the common characters between traditional algorithms based on dct image coding is that regardless of the content of the image, they use a fixed size block to process, for example, jpeg, mpeg-1 / 2, h . 263 use constant 8 * 8 block mode . the main work of this article is to propose a sequence images compression algorithm that is based on adaptive block dividing and object to the disadvantages of the one based on fixed-size block dividing . the proposed algorithm is an image compression method, which can auto-adjust dct block size ( 8 * 8 or 4 * 4 ) according to the difference of corresponding blocks between two frames of the sequential image and doesn ’ t process any unnecessary data blocks in order to enhance coding efficiency 傳統(tǒng)的基于dct的圖像編碼算法的一個(gè)共同特點(diǎn)就是:不管圖像的具體內(nèi)容,采用固定的塊尺寸進(jìn)行統(tǒng)一的處理,例如jpeg,mpeg-1/2,h.263均采用固定的88分塊方式,本文的重點(diǎn)工作是針對(duì)這些采用固定的塊尺寸進(jìn)行統(tǒng)一處理的算法的一些缺點(diǎn),提出了一種基于自適應(yīng)分塊的序列圖像壓縮算法,該算法是一種根據(jù)序列圖像兩幀間對(duì)應(yīng)塊的差別自動(dòng)調(diào)整dct變換尺寸(88或44),對(duì)不必要的數(shù)據(jù)塊不進(jìn)行處理,以提高編碼效率的序列圖像壓縮編碼方法,具有較高的編碼效率和較好的壓縮效果,與傳統(tǒng)的采用88固定分塊方式的壓縮編碼算法相比,性能有較大幅度的提高,在文中,作者對(duì)兩者的壓縮編碼性能進(jìn)行了分析比較。
One of the common characters between traditional algorithms based on dct image coding is that regardless of the content of the image, they use a fixed size block to process, for example, jpeg, mpeg-1 / 2, h . 263 use constant 8 * 8 block mode . the main work of this article is to propose a sequence images compression algorithm that is based on adaptive block dividing and object to the disadvantages of the one based on fixed-size block dividing . the proposed algorithm is an image compression method, which can auto-adjust dct block size ( 8 * 8 or 4 * 4 ) according to the difference of corresponding blocks between two frames of the sequential image and doesn ’ t process any unnecessary data blocks in order to enhance coding efficiency 傳統(tǒng)的基于dct的圖像編碼算法的一個(gè)共同特點(diǎn)就是:不管圖像的具體內(nèi)容,采用固定的塊尺寸進(jìn)行統(tǒng)一的處理,例如jpeg,mpeg-1/2,h.263均采用固定的88分塊方式,本文的重點(diǎn)工作是針對(duì)這些采用固定的塊尺寸進(jìn)行統(tǒng)一處理的算法的一些缺點(diǎn),提出了一種基于自適應(yīng)分塊的序列圖像壓縮算法,該算法是一種根據(jù)序列圖像兩幀間對(duì)應(yīng)塊的差別自動(dòng)調(diào)整dct變換尺寸(88或44),對(duì)不必要的數(shù)據(jù)塊不進(jìn)行處理,以提高編碼效率的序列圖像壓縮編碼方法,具有較高的編碼效率和較好的壓縮效果,與傳統(tǒng)的采用88固定分塊方式的壓縮編碼算法相比,性能有較大幅度的提高,在文中,作者對(duì)兩者的壓縮編碼性能進(jìn)行了分析比較。