block retrieval 中文意思是什麼
block retrieval
解釋
塊檢索-
Fractal coding has been proved useful for image compression. it is also proved effective for content - based image retrieval. in the paper, we present a block - constrained fractal coding scheme and a matching strategy for content - based image retrieval. in this coding scheme, an image is partitioned into non - overlap blocks of a size close to that of a query iconic image. fractal codes are generated for each block independently. in the similarity measure of fractal codes, an improved nona - tree decomposition scheme is adopted to avoid matching the fractal codes globally in order to reduce computational complexity. our experimental results show that our coding scheme and the matching strategy we adopted is useful for image retrieval, and is compared favorably with other two methods tested in terms of storage usage and computing time
分形編碼在圖像壓縮方面取得了很好的效果，同時，分形編碼也能夠用於基於內容的圖像檢索.本文提出了一種基於塊限制的分形編碼演算法和匹配策略，並將它們用於圖像檢索.在我們編碼演算法中，圖像會被預先分成互相不重疊的子圖像塊，然後對這些子圖像進行獨立地分形編碼，從而獲得整幅圖像的分形碼.該編碼演算法能夠在很大程度上減少編碼時間.在進行圖像間相似性的匹配時，我們採用改進的基於九叉樹的分配策略，從而避免全局地進行分形碼的匹配，減少了計算量.實驗結果說明，我們的編碼演算法和匹配策略能夠比較有效地應用於基於內容的圖像檢索，在計算時間和存儲時間上都優于實驗中其它兩種方法 -
The center index block holds important information for the sense of human ' s eyes ; moreover, it is also the important texture information among i - frames. therefore, it will play a key role to retrieval too
由演算法可知，中心索引塊保留了人眼所能感知的重要信息，同時也是i幀間相關的重要紋理信息，因此，它對檢索也將起到非常關鍵的作用。 -
Retrieval of 3d models based on block
基於子塊的三維模型檢索演算法 -
Secondly, based on the shortage of full - image histogram, this thesis presents block histogram algorithm. thirdly, we study the image retrieval algorithm of color pair, and make the retrieval image having color similarity in space. finally, we apply hsv color - space corresponding to human visual characteristics to image retrieval, make use of human feeling on color to quantify the color weight, and analyze the two quantization methods
首先，對獲得的圖象進行預處理，使得圖象的顏色特徵能夠準確而方便的提取；其次，針對全圖直方圖的不足，提出了基於子塊直方圖的演算法；再之，在子塊直方圖的基礎上，研究了基於顏色對的圖象檢索演算法，使檢索結果圖象在空間上具有顏色相似性；最後採用了符合人類視覺特性的hsv顏色空間來進行圖象檢索，並利用人對顏色的感知對顏色分量進行了量化，對兩種量化方法進行了研究和討論。 -
This paper emphatically researches some typical search algorithms based on block matching of motion estimation, such as 155, fss, tdl, cs and ds. aimed at questions existing in these algorithms, under the elicitation of man vision system, the author designs a new integrative pattem ( sdp ) ftom the bionic view, which shows a parallel processing idea of coarse location and accurate orientation, and then presents a new square - diamond search ( sds ) algorithm for block matching motion estimation. the results of experiment prove that not only the new sos is much faster than above traditional algorithms, but also its psnr and visual quality of the retrieval images are better than those of other algorithms, and as nearly good as that of fs
本文重點研究了三步法（ tss ） 、四步法（ fss ） 、二維對數法（ tdl ） 、交叉法（ cs ）和菱形法（ ds ）等經典的基於塊匹配的運動估值演算法；針對它們存在的問題，在人眼視覺系統的啟發下，從仿生學的角度設計了一種新的綜合模板（ sdp ） ，它體現了粗定位和準確定位并行處理的思想，在此基礎上提出了一種新的用於塊匹配的搜索演算法?正方形?菱形搜索（ sds ）演算法；實驗證明：該演算法的搜索速度比fs 、 tss 、 fss 、 tdl 、 cs和ds都快，而且根據運動矢量恢復出的圖像在psnr和主觀視覺效果方面都和fs相當，比其它演算法要好。 -
What ' s more, with fundamental research, the following solutions were put forward : database connectivity technology, which can help to implement this system which works in client / server mode, the way of using ole ( object linking and embedding ) to solve the storage and retrieval problems of blob ( binary large object block ) data type and the method of directly giving the database system ' s operating purviews to right users with the application of dbms ' s authentication mechanism, which help to control database ' s access
這些關鍵技術包括數據庫連接技術，以實現客戶/服務器模式下的數據庫開發；用ole技術解決大文本數據存取問題；結合dbms自身鑒別機制，將數據庫系統權限賦予用戶，以控制用戶對數據的訪問。最後，本文對南京物流公司管理信息系統的開發工作進行了總結，並展望了開發運輸類公司mis的發展方向。
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