threshold detector 中文意思是什麼
threshold detector
解釋
門限檢波器-
Optical gains as large as one million are used to achieve the high sensitivities required in current electro - optical sensors. these large optical gains make the detector the most susceptible sensor element to laser damage. people concerns that the influence to the quality of ccd camera image under laser irradiation, the laser - induced threshold of ccd detector and the evaluation of laser - induced effects
光電探測器具有極強的目標探測能力，而激光具有極高的亮度；因而各類光電裝備的光電探測器成為國外發達國家正在大力發展激光武器系統的首要攻擊目標，激光對探測器的干擾與損傷程度如何、受干擾后能否繼續正常工作、何時達到損傷閾值以及如何對干擾效果做出客觀評價是人們非常關心的問題。 -
3. the concept of feature fidelity is defined based on principal component analysis ( pca ) and an adaptive threshold based feature detector is then proposed, which takes no advantage of ad hoc knowledge including threshold, photography condition, experimental coefficients, etc., thus greatly expands the applications of facial feature detection technology
3 、提出基於自適應閾值分割的人臉特徵檢測方法和基於主分量分析的特徵真實性概念，將人臉特徵檢測方法建立在無先驗假設的基礎上，克服了現有方法中過分依賴先驗閾值、攝像條件或經驗參數的缺陷，極大擴展了人臉特徵檢測的應用范圍。 -
After this, this paper present the simple threshold ca - cfar detector with little reference cell number, and analyse the relationship between the detection probability and noncoherent integration number, reference cells, then the relationship curve and an analysis is also given. finally, the thesis simulate the signal processor and cfar algorithm, discussed results are proved to be correct
文章最後將產生的目標及雜波數據送入信號處理機的模擬系統，對其進行信號處理及恆虛警檢測的模擬，給出了模擬結果，對模擬結果進行了詳盡的分析討論，驗證了本文信號處理及恆虛警演算法的正確性。 -
The method firstly uses color edge detector to get the horizontal edge image, secondly it makes use of the global threshold method binary quantifying the grad image, and finally dilates the binary grad image from horizontal direction
該方法首先利用彩色邊緣運算元colorprewitt提取了圖像的水平邊緣，然後利用全局閾值法對梯度圖像進行了二值化，最後對二值梯度圖像進行了形態學水平膨脹。 -
The eyes can be considered as a salient and relatively stable feature of faces, so firstly eyes - analogue regions in cluttered images are segmented using local adaptive threshold edge detector. then the small eye - analogue regions are grouped together and labeled using a traditional labeling process according to their geometrical and color features. instead of finding potential eye - pairs from eye - analogue regions one by one, all possible pairs of eyes are encode as the solution, and the potential face are searched by gas
新意之處：利用膚色是一種感知現象的特性以及神經網路的強大感知、學習功能，採用進化神經網路對膚色進行感知和分類；以眼睛的幾何和周邊的膚色特徵分割眼睛塊，克服了在完整的膚色區域內檢測人臉方法的局限性；對候選眼睛對的編號而不是人臉在圖像中的位置、人臉的尺度和方向進行編碼，使遺傳演算法用於人臉定位時的問題空間得以大大簡化，採用一個新穎的眼睛及臉頰部位的灰度投影及膚色模板驗證，可以實現多尺度、任意方向的正面人臉檢測，實驗結果令人滿意。
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