scan vt. (-nn-) 1.細(xì)看,細(xì)察;審視。 2.〔口語〕大略一閱;瀏覽。 3.按韻節(jié)念,按句調(diào)讀,標(biāo)出(詩)的格律(指劃分音步)。 4.【電視】掃描;掃掠;搜索。 vi. 1.(詩)符合格律,讀起來抑揚頓挫。 2.【無線電】掃描。 This line does not scan. 這一行不合韻律。 n. 1.細(xì)看;細(xì)察。 2.掃視,瀏覽。 3.【電視】掃描;掃掠。 4.眼界;視野。
After the calculation, the scan efficiency of the hexagon scan is up to 11.1 % than raster scan . ( 4 ) . in the following parts it analyzes the every factors that affect the capture scan speed, makes the simulation, and sum up the initial simulation result . there are 65 simulation programs made by matlab / simulink and c 結(jié)果表明:六邊形(hexagon)掃描方式比分行式螺旋矩形掃描方式的掃描效率提高了11.1%;(4)分析了各種情況對捕獲掃描速度的影響,并進行了仿真,得出了初步的仿真實驗結(jié)果。
The narrow fan-beams are reset into parallel beam then the image reconstruction is conducted by parallel beam " convolution back projection algorithm, which combines the high scan efficiency with the convenience of image reconstruction . this paper analyses the parallelism in narrow fan-beam " convolution back projection algorithm, divides the task of image reconstruction into several subtasks, and discusses the parallelization of narrow fan-beam " decomposition and reset, parallel beam " convolution back projection, and image accumulation 對于窄角扇束掃描方式,把窄角扇束重排成平行束,再由平行束卷積反投影重建算法來重建圖像,是把掃描的高效率和重建方式的簡便易行很好的結(jié)合起來。本論文對窄角扇束卷積反投影算法進行了并行性分析,指出把圖像重建任務(wù)分解為多個子任務(wù)并行工作,并在工作站機群上討論了窄角扇束的分解、重排、平行束卷積反投影圖像重建、圖像合成的并行實現(xiàn)。