background n. 1.后景,背景;基本情況;(紡織品等的)底子;出身;經(jīng)歷。 2.隱蔽的[不引人注目的]地位;幕后。 3.襯托音樂,伴音;【無線電】干擾雜音 (students of workers' background. 工人出身的學(xué)生)。 in the background 背地下,背后;在幕后(活動(dòng))。
Stationary characterization and correlation of visible image background clutter 可見光圖像背景起伏的平穩(wěn)性和相關(guān)性分析
According to the statistic characteristics of ir background clutter , an improved spatial matched filter ( smf ) is presented 理論和實(shí)驗(yàn)結(jié)果表明,該方法對于抑制強(qiáng)起伏的紅外背景是十分有效的。
It exploits the consecutive temporal and spatial dependencies of the points on a track to distinguish them from background clutter 它主要是運(yùn)用了目標(biāo)運(yùn)動(dòng)在時(shí)間利空間上的連續(xù)性來積累目標(biāo)能量。
According to the statistic characteristics of ir background clutters , a system based on improved spatial matched filter ( smf ) is presented in this article 本文在總結(jié)前人研究成果的基礎(chǔ)上,針對復(fù)雜背景紅外圖像的統(tǒng)計(jì)特性,提出了一種基于組合式空間匹配濾波器的運(yùn)動(dòng)小目標(biāo)檢測方法。
The main function of radar is target detection in the background clutter . the effect of clutter to the automatically detecting system is one of most important problem which could not ignore in the radar design 雷達(dá)的主要目的就是在存在干擾的背景中檢測出有用目標(biāo),雜波對雷達(dá)檢測性能的影響一直是雷達(dá)設(shè)計(jì)中不可回避的重要問題之一。
In the forth and back windows , the mosos - cfar detector uses the ordered statistics as the background cutter power level of the two windows , and the sum of the forth and back local estimation as the total estimation of background clutter power level Mosos - cfar檢測器在前后滑窗分別采用有序統(tǒng)計(jì)量來表示前后滑窗的背景雜波功率水平,再將前后局部估計(jì)相加作為總的背景雜波功率水平估計(jì)。
The experimental results identify that this process can robustly track and classify targets of interest , reject background clutter , and continually track objects over large distances despite occlusions , appearance change , and cessation of the target motion 實(shí)驗(yàn)結(jié)果表明,該過程能夠很好地探測和分類目標(biāo),去除背景信息的干擾,并能夠在運(yùn)動(dòng)目標(biāo)部分被遮擋、外觀改變和運(yùn)動(dòng)停止等情況下連續(xù)地跟蹤目標(biāo)。
Compared to other shape matching algorithms , our shape modeling and detection algorithm has distinguishing features . our part - based and hierarchical strategy finds each part of the shape sequentially , rather than extracting all shapes from the image to match with the possible shape models . it can improve the accuracy and speed the detection processing , and can help to reduce or eliminate the effects of background clutters , partial occlusions and inner rotation in the object 形狀建模和檢測算法與一般方法相比,具有鮮明的特點(diǎn),即不需要先提取形狀再與可能的目標(biāo)模型匹配,而是采用分部分和分層次的處理思想,依次在圖像中搜索形狀的各個(gè)組成部分,由此提高了檢測的精度和效率,減小或消除了復(fù)雜背景、部分遮擋和目標(biāo)內(nèi)部組成部分旋轉(zhuǎn)的影響,同時(shí)可以實(shí)現(xiàn)并行處理。
In this paper applications of wavelet packet analysis , higher order cumulant method and some image processing method in the processing of gpr data acquired from subsurface target backscattering are presented , which includes the following contents : methods to denoise and suppress background clutter for target detection ; to improve the time resolution for target position ; target recognition 本文討論了小波包分析、高階累積量分析及圖象處理方法在沖擊脈沖探地雷達(dá)淺層反射信號處理中的若干應(yīng)用,包括對目標(biāo)去噪、確定目標(biāo)時(shí)間位置及進(jìn)行目標(biāo)識(shí)別方法的研究。