Scale invariance

Xem 1-20 trên 21 kết quả Scale invariance
  • This paper presents a method for extracting distinctive invariant features from images that can be used to perform reliable matching between different views of an object or scene. The features are invariant to image scale and rotation, and are shown to provide robust matching across a a substantial range of affine distortion, change in 3D viewpoint, addition of noise, and change in illumination. The features are highly distinctive, in the sense that a single feature can be correctly matched with high probability against a large database of features from many images.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Unsupervised Video Shot Detection Using Clustering Ensemble with a Color Global Scale-Invariant Feature Transform Descriptor

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  • Tham khảo tài liệu 'distinctive image features from scale-invariant keypoints david g. lowe computer science department', công nghệ thông tin, tin học văn phòng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Bài viết này trình bày phương pháp tìm kiếm ảnh vân môi trên tập dữ liệu vân môi mẫu của 200 người với tổng cộng 1658 ảnh (mỗi người có tử 5 đến 10 ảnh vân môi). Sử dụng đặc trưng cục bộ Scale-Invariant Feature Transform (SIFT) để trích lọc đặc trưng ảnh, tối ưu hóa việc lưu trữ các vector đặc trưng bằng Bag Of Visual Words (BOVW).

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Learning How to Extract Rotation-Invariant and Scale-Invariant Features from Texture Images

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  • Tham khảo luận văn - đề án 'báo cáo hóa học: " research article unsupervised video shot detection using clustering ensemble with a color global scale-invariant feature transform descriptor"', luận văn - báo cáo phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf10p dauphong19 07-03-2012 17 2   Download

  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: " Self-organization of developing embryo using scale-invariant approach

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  • Overview: Motivation of Work. Overview of Algorithm. Scale Space and Difference of Gaussian. KeypointLocalization. Orientation Assignment. Descriptor Building. Application

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  • Recent measurements of local-area and wide-area traf®c [8, 28, 42] have shown that network traf®c exhibits variability at a wide range of scales. What is striking is the ubiquitousness of the phenomenon, which has been observed in diverse networking contexts, from Ethernet to ATM, LAN and WAN, compressed video, and HTTPbased WWW traf®c [8, 15, 23, 42]. Such scale-invariant variability is in strong contrast to traditional models of network traf®c, which show burstiness at short time scales but are essentially smooth at large time scales; that is, they lack long-range dependence. Since...

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  • More than ten years ago, two of us (AGH and DGR) were lucky enough to edit a previous symposium of the British Ecological Society (BES) – Aquatic Ecology: Scale, Pattern and Process (Giller, Hildrew & Raffaelli, 1994). In the Introduction to that volume, we pointed out that the BES had not devoted a single previous symposium to aquatic ecosystems.

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  • Recent measurements of local-area and wide-area traf®c [14, 22, 28] have shown that network traf®c exhibits variability at a wide range of scales. Such scale-invariant variability is in strong contrast to traditional models of network traf®c, which show variability at short scales but are essentially smooth at large time scales; that is, they lack long-range dependence. Since self-similarity is believed to have a signi®cant impact on network performance [2, 15, 16], understanding the

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  • Trong bài này, chúng tôi giới thiệu một phương pháp mới phát hiện những ảnh khiêu dâm dựa trên sự kết hợp giữa phương pháp biểu diễn ảnh bằng các nét đặc trưng không đổi với những biến đổi tỉ lệ (Scale-invariant feature transform – SIFT), mô hình túi từ trực quan (the bag-of-visual-words (BoVW) và giải thuật ArcX4 của Bayes thơ ngây ngẫu nhiên (the Arcx4 of random multinomial naive Bayes ( Arcx4-rMNB)).

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  • In this Chapter we focus on the field-theoretical description of the inflationary phase of the early universe and its post-inflationary dynamics (reheating and particle production) in the context of supergravity, based on the original papers (1–10). To begin with, let us first introduce some basics of inflation.

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  • Wulf et al. Nanoscale Research Letters 2011, 6:365 http://www.nanoscalereslett.com/content/6/1/365 NANO EXPRESS Open Access Scaling properties of ballistic nano-transistors Ulrich Wulf*, Marcus Krahlisch and Hans Richter Abstract Recently, we have suggested a scale-invariant model for a nano-transistor. In agreement with experiments a closeto-linear thresh-old trace was found in the calculated ID - VD-traces separating the regimes of classically allowed transport and tunneling transport.

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  • OF INVARIANT FIBER BUNDLES FOR DYNAMIC EQUATIONS ON MEASURE CHAINS ¨ CHRISTIAN POTZSCHE AND STEFAN SIEGMUND Received 8 August 2003 m -SMOOTHNESS We present a new self-contained and rigorous proof of the smoothness of invariant fiber bundles for dynamic equations on measure chains or time scales. Here, an invariant fiber bundle is the generalization of an invariant manifold to the nonautonomous case.

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  • EURASIP Journal on Applied Signal Processing 2003:10, 993–1000 c 2003 Hindawi Publishing Corporation Time-Scale Invariant Audio Data Embedding Mohamed F. Mansour Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55414, USA Email: mmansour@ece.umn.edu Ahmed H. Tewfik Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55414, USA Email: tewfik@ece.umn.edu Received 31 May 2002 and in revised form 22 December 2002 We propose a novel algorithm for high-quality data embedding in audio.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Measuring Enjoyment of Physical Activity in Older Adults: Invariance of the Physical Activity Enjoyment Scale (PACES) Across Groups and Time...

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  • This paper considers the exponential stability and stability radius of time-invarying dynamic equations with respect to linear dynamic perturbations on time scales. A formula for the stability radius is given. Keywords and phrases: time scales, exponential function, linear dynamic equation, exponentially stable, stability radius

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  • The recognition of gender equality as a cross-cutting issue in the Paris Declaration and the OECD-DAC’s gender marker system to assess the contribution of overseas development assistance (ODA) to gender equality goals have also been important contributions to greater effectiveness. With its emphasis on development effectiveness and the recognition of gender equality and the empowerment of women as critical to achieving development results, the Busan Partnership for Effective Development Cooperation also advances progress through a series of concrete commitments.

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  • The second future path for social funds is as special-purpose vehicles, providing selective seed capital to foster innovations in community de- velopment, to experiment with new technologies, and to act as the government’s agent in remote areas and for very small-scale activities. Even though many of the social funds might already characterize them- selves as special-purpose vehicles, they have gotten much broader.

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