subtraction of image 中文意思是什麼

subtraction of image 解釋
圖像減法處理
  • subtraction : n. 減去，扣除 （from）; 【數學】減法。
  • of : OF ＝Old French 古法語。
  • image : n 1 像，肖像，畫像；偶像。2 影像，圖像。3 相像的人（或物）；翻版。4 形像，典型。5 形像化的描繪。6...
  1. In the research of value domain segmentation of images, a modified variance algorithm, a subtraction segmentation algorithm and an improved pulse coupled neural networks segmentation algorithm are proposed. in order to successfully implement the space domain segmentation, this paper also develops an algorithm that can distinguish connexity between pixels and extract the feature parameters in one image scanning procedure

    在圖像值域分割研究中，根據炸彈在雙能量x光圖像中的特性，提出了三種分割演算法：一種修正的最小類內方差分割演算法，一種雙能量x光圖像差減分割演算法，和一種改進的脈沖耦合神經網路圖像分割演算法。
  2. In accordance with the above case, real - time background compensation against ir image for eliminating influence of thermal blooming can be carried out by using digital image processing methods such as frame subtraction and reversed color addition

    針對上述情況，研究用數字圖像處理的方法幀相減、反色相加，對紅外圖像進行實時背景補償，以便消除熱暈的影響。
  3. Visual analysis of human motion has been receiving increasing attention from researchers in the fields of image processing and computer vision during the past few years. it has a lot of applications in virtual reality, smart surveillance system, advanced user interface, motion analysis and video compressing, etc. this paper focuses on the technology of human motion tracking based on video, first, we make a summarization of the domestic and overseas status of the research in this field. on the basis of this, we analyse the technical difficulties of human motion tracking. as most of the existing model - based methods of human motion tracking perform not so good in some situation as they need mannual intervention, and also the precision of tracking is not so satisfying during the research of tracking of walking people because of the self - occlusion of legs, this paper proposes an algorithm of automatic detection and tracking of legs of the walking people based on monocular image sequences, in which we analyse the features of walking people, track the five joints of lower limbs, get various parameters, and then re - construct the walking process. the main research achievement is as follows : 1 ) we propose an algorithm of markerless automatic extraction of leg skeleton. first we divide the video into continuous image sequences, after background subtraction, the satisfying human region could be extracted, then we get a single - connected region by converting the rgb image to binary image and median filtering. afterwards, the contour of lower limbs in the frame with a widest boundingbox is detected, using sobel operator, to find the ankle joint of leg behind according to the features and rules of walking, then, the joint of knee of leg behind, hip, ankle of leg in front, knee of leg in front could be got in turn. so, model of leg skeleton is constructed

    首先將視頻分解成許多連續的靜態圖像幀，經過背景去除，把感興趣的人體區域提取出來，通過二值化，中值濾波等預處理方法得到只有人體的一個單連通區域，然後用sobel運算元檢測出boundingbox最寬幀中人體下半身的輪廓，根據運動規律及特徵找到後腿踝關節點，結合從boundingbox最窄幀中所獲取的腿長依次得到後腿膝關節，跨部關節，前腿踝關節，前腿膝關節四點，從而構建出腿部骨架模型。 2 ）實現了人體步行腿部骨架的跟蹤演算法。在完成對腿部骨架模型的自動初始化之後，本文對跨關節、膝關節及踝關節分別採用運動建模、圓周相交定點演算法、運動預測及預測點周圍搜索rgb相似矩形塊三種方法確定每一幀中其實際坐標，從而重構出腿部骨架的運動過程。
  4. To the complete character use the image which representation by matrix, making the subtraction between the matrix of capture image and the matrix of template, the result matrix which absolute sum of its all elements is the smallest is the recognition result. to the incomplete character, using two lines of 0 ~ 9 as template, then carry on the recognition using the template matching. to the scale division recognition, using the central position of it, distinguishes the long scale division expression is merely 0 perhaps 5

    對完整字元，採用將圖像用矩陣表示，利用獲取圖像的矩陣與識別模板的矩陣做減法，結果矩陣的所有元素絕對值和最小的即為識別結果;對不完整字元，針對電度表讀數的具體特點，採用將兩行0 ~ 9的字元圖像排列起來作為模板，利用模板匹配法進行識別;對于刻度的識別，利用刻度的中心坐標位置，僅僅識別長刻度表示的是0或是5即可。
  5. The dsa image processing system which the author have developed can be used as the image processing prototype model in the digital subtraction angiography system, according to the new arithmetic achieved by software it can be changed to hardware implement to the whole - one dsa system, on the other hand, it can be directly applied to the reconstruction of old x - ray machines to the new dsa system and based on this system, more applications on dsa can be developed

    本研究的成果可以作為數字剪影血管造影系統中數字圖象處理部分原型系統，一方面可以根據研究成果和演算法轉化為硬體實現方式應用於數字剪影血管造影dsa一體機中，另一方面可以直接應用於將現有x光機改造成為數字剪影血管造影系統，同時在此系統的基礎上可以開發出更多的數字剪影血管造影的應用。
  6. A developed simple m - s model for image segmentation in geometric active contour model is presented based on intra - region similar and inter - region dissimilar properties. the model constructs an energy ( cost ) function, which is made of intra - region variations and weighting squares of subtraction of region mean values. using gradient - descent methods, the energy function is minimized and we get a curve evolution equation that segments image

    基於區域內一致性加權區域間差異性構造能量函數，利用最陡梯度法使能量函數最小化，提出了一種改進的簡化mumford - shah （ m - s ）圖像分割模型，該模型利用區域內方差描述區域內一致性，區域間平均灰度值之差的平方描述區域間差異性，實驗結果表明，通過調節加權系數，該模型對弱邊界圖像分割具有較強的適應性。
  7. In this paper, the author studies the kernel arithmetic of the digital subtraction image processing in digital subtraction angiography system

    本課題對數字剪影血管造影dsa系統中數字剪影圖象處理系統的核心演算法進行了研究。
  8. In the de - noise part, the author firstly proved that the snr of the live image can be improved by integrating several images. because the subtraction images are image sequences, which related to time, so in the arithmetic realization, different images are integrated after assigning different weight that is convenient for optimization

    在降噪的處理過程中首先從理論分析中證明了通過積分累加可以使得造影圖象的信噪比獲得提高，在實現中考慮到數字剪影圖象是與時間有關的序列，因此採用利於優化的多權重積分累加，提高了運算效率。
  9. Image quality assurance in x - ray diagnosis ; constancy testing of systems for digital subtraction angiography

    射線診斷用圖像的質量保證.數字減法血管造影系統的
  10. The preprocessing of subtraction and the enhancement for biomedical image of retinal blood vessels

    視網膜血管生物醫學圖像的減影增強預處理研究
  11. ( 3 ) various digital image - processing techniques for suppression of undesired components and enhancement of quality in numerical reconstruction images are considered, such as hologram contrast - enhancement, hro subtraction, mean value subtraction, frequency domain filtering and spectrum expansion with conjugation symmetry property

    （ 3 ）從理論和實驗兩方面分析了全息圖對比度增強、平均值相減、 hro 、頻譜濾波等數字圖像處理技術，及其在消除全息圖衍射0級和孿生像，提高數值再現像信噪比方面的作用。
  12. In detecting moving targets in serial images with moving background, we first use image registration method to cancel the background ' s moving then adopt frame subtraction method to detect moving targets. in image registration, we put forward the concept of singular feature point and adopt it in image registration

    在運動背景的運動檢測上，本文採用先配準消除背景運動后再進行檢測的方法，對序列圖像配準進行了研究，提出了奇異特徵點的概念，將其應用於圖像的配準上。
  13. According to the x - ray image ' s mathematic model, the author provides two kind of subtraction mode : directly subtraction and logarithmic substation

    根據x圖象的數字模型，提出了兩種數字剪影方式：直接剪影方式和對數剪影方式。
  14. Drawn on such technologies and research of moving object detection as optical flow method, frame difference method and background subtraction method, this thesis proposes, based on the theory of statistic denoise, a new method of achieving background. compared with other methods of achieving image background, this approach can simultaneously achieve and update background

    在對光流法、幀差法和背景減法的運動檢測技術研究的基礎上，本文提出了一種基於統計降噪原理的運動目標背景提取方法，與其它獲取圖像背景的方法相比較，此方法可同時完成背景的獲取和更新。
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