edge detection and boundary finding techniques

... ground-truth boundary and noise and a very high boundarydetection accuracy was reported Finally, the ratio-contour algorithm finds the globally optimal boundary in terms of its boundary- saliency measure and ... Tracking Image retrieval ··· Boundary detection Edge detection Figure 1: The likelihood of extracting full boundaries from detected edges reflects the performance of edge- detection algorithms in general ... goal is to evaluate edge detection according to the likelihood of locating the ground-truth object boundary from edge- detection results Therefore, we need first to have a boundary -detection algorithm...

Ngày tải lên: 22/06/2014, 23:20

... intra-interpolation method, called edge- based line average (ELA) [3], was proposed to preserve edge sharpness and integrity and avoid jaggedness of edges ELA interpolates a pixel along the edge direction explored ... motion detection and 2-field motion detection, which are good detection accuracy for stationary pixels, and the ability to detect the very fast motion that cannot be detected by 3-field motion detection, ... for texture and edge interpolations In Figure 4, there are four unique types of edge patterns within a × window, which are 3H1L edge patterns, 3L1H edge patterns, 2H2L corner patterns, and 2H2L...

Ngày tải lên: 22/06/2014, 00:20

... intra-interpolation method, called edge- based line average (ELA) [3], was proposed to preserve edge sharpness and integrity and avoid jaggedness of edges ELA interpolates a pixel along the edge direction explored ... motion detection and 2-field motion detection, which are good detection accuracy for stationary pixels, and the ability to detect the very fast motion that cannot be detected by 3-field motion detection, ... for texture and edge interpolations In Figure 4, there are four unique types of edge patterns within a × window, which are 3H1L edge patterns, 3L1H edge patterns, 2H2L corner patterns, and 2H2L...

Ngày tải lên: 22/06/2014, 06:20

... Shift invariance Discrete convolution • 1D • 2D • edge effects” in discrete convolution Spatial frequency and Fourier Transform Sampling and aliasing Constructing a pyramid by taking every ... filter and the Gaussian filter are separable into two 1D convolutions: – Fi convolve each row with a 1D filter First l h ih fil – Then convolve each column with a 1D filter Differentiation and ... useful building blocks The big picture… Feature Detection Feature Description database of local descriptors e.g DoG e.g e g SIFT Matching / Indexing / Detection Images as functions • We can think...

Ngày tải lên: 26/01/2015, 10:09

... with narrowband and wideband lock-in detection, and its dependence on pulsing frequency and sample thermal time constant were understood The key parameters for narrowband lock-in detection were ... 2.2ms and   10ms (b) Narrowband lock-in magnitude output for dc-coupled and accoupled detection systems Wideband lock-in detection output for dc-coupled detection systems with vd Av  1V and ... and  DUT  30s Wideband lock-in detection output for ac-coupled detection systems with vd Av  1V ,  DUT  30s ,   2.2ms and   10ms Narrowband and wideband lock-in detection magnitude...

Ngày tải lên: 11/09/2015, 09:58

... Generally there are two types of lock-in detection, namely narrowband (NB) lock-in detection and wideband (WB) lock-in detection [88] Narrowband lock-in detection 112 Chapter ... in Fig 5.9(a) and peaks at around kHz 5.2.2.3 DC-Coupled and AC-Coupled Comparison Fig 5.12 Narrowband and wideband lock-in detection magnitude output for dc-coupled and ac-coupled detection systems ... Narrowband in-phase b(i) Wideband in-phase a(ii) Narrowband quadrature-phase b(ii) Wideband quadrature-Phase Fig 5.7 Narrowband a(i) in-phase and a(ii) quadrature-phase correlation functions and...

Ngày tải lên: 11/09/2015, 09:58

Ngày tải lên: 17/09/2012, 09:13

... Indeed, some form of change detection is also needed In this section, we'll take what we've learned about locking and detection and formulate two pessimistic solutions and one optimistic solution ... statement and commits: update set where and person first_name = 'Tim' person_id = first_name = 'Tom'; Session two then executes the following UPDATE statement and commits: update set where and person ... tactics you can employ for detection Let me clarify that we are no longer discussing locking, but detection Detection is mutually exclusive of locking The first two detection tactics we will discuss...

Ngày tải lên: 29/09/2013, 09:20

... Decision-making/ Đưa định dựa sở đồng thuận Rotating Chair (Union and Management)/ Thay phiên chủ trì (công đoàn quản lý) Agenda and Minutes/ Chương trình biên Lots of 2-way communication tools/ ... with top management / Chính sách mở cửa với lãnh đạo cấp cao Supervisors and Union representatives trained in communication and conflict resolution skills/ Đại diện công đoàn giám sát viên đào tạo ... One Party decides after consultation and feedback from the other Party / Một bên định sau tư vấn nghe thông tin phản hồi từ phía bên D-3 Two Parties consult and jointly agree / Hai bên tư vấn đồng...

Ngày tải lên: 24/10/2013, 04:15

... Signal Detection: Known Gains • Signal Detection: Unknown Gains • Signal Detection: Random Gains • Signal Detection: Single Signal 13.6 Spatio-Temporal Signals Detection: Known Gains and Known ... provides a brief and limited overview of some of the theory and practice of signal detection and classification The focus will be on the Gaussian observation model For more details and examples see ... testing [1], invariant hypothesis testing [8, 9], sequential detection [10], simultaneous detection and estimation [11], and nonparametric detection [12] Detailed discussion of these strategies is...

Ngày tải lên: 05/11/2013, 17:20

... Signal Detection: Known Gains • Signal Detection: Unknown Gains • Signal Detection: Random Gains • Signal Detection: Single Signal 13.6 Spatio-Temporal Signals Detection: Known Gains and Known ... provides a brief and limited overview of some of the theory and practice of signal detection and classification The focus will be on the Gaussian observation model For more details and examples see ... testing [1], invariant hypothesis testing [8, 9], sequential detection [10], simultaneous detection and estimation [11], and nonparametric detection [12] Detailed discussion of these strategies is...

Ngày tải lên: 05/11/2013, 17:20

... Signal Detection: Known Gains • Signal Detection: Unknown Gains • Signal Detection: Random Gains • Signal Detection: Single Signal 13.6 Spatio-Temporal Signals Detection: Known Gains and Known ... provides a brief and limited overview of some of the theory and practice of signal detection and classification The focus will be on the Gaussian observation model For more details and examples see ... testing [1], invariant hypothesis testing [8, 9], sequential detection [10], simultaneous detection and estimation [11], and nonparametric detection [12] Detailed discussion of these strategies is...

Ngày tải lên: 08/11/2013, 12:15

... Fall 1999 Lecture-09 Error Sources, Detection and Correction Error Detection Methods: • Parity Checking The oldest, simplest and least effective method of error detection is parity checking One ... cables, fluorescent lights, and electrical machinery) • Changing Multiplexing Techniques - changing frequencies or guard bands • Improving Connection Quality • Amplifiers and Repeaters Amplifiers ... Error Sources, Detection and Correction • Intermodulation Noise A special type of crosstalk The signals from two circuits combine to form a new signal that falls into a frequency band reserved...

Ngày tải lên: 10/12/2013, 08:15

... ACTIVITIES AND COSTS Managing production activities and costs requires an understanding of product life cycles and the various management and accounting models and approaches to effectively and efficiently ... standards: an annual standard and a current standard Design modifications would change the current standard, but not the annual one The annual standard is one of the bases for preparation and ... processes.) (Standard labor hours ϫ annual standard rate) Ϫ (Standard labor hours ϫ current standard rate) ENC variance Chapter 16 Innovative Inventory and Production Management Techniques Economic...

Ngày tải lên: 18/12/2013, 09:10

... detection is still being defined as vendors migrate more and more IDS code into the firewall appliance The Firewall as the IPS With the increased market desire to go beyond simple intrusion detection ... helps significantly improve the deterrent capabilities and the defenses of a network With alarms from firewalls, dedicated IDS appliances, and host IPS agents, a strong correlation can be made ... the firewall does make an excellent sensor in that it is directly in-line with the traffic flow and has the capability to capture all traffic destined for target hosts located behind the firewall...

Ngày tải lên: 26/01/2014, 04:20

... advantages of pair work and group work techniques in teaching and learning English and it can help other teachers of English be aware of these advantages and apply pair work and group work activities ... motivation and so on - Teaching techniques It is obvious that different teaching techniques create different degrees of students’ participation and interest in the lesson For example, techniques ... frequency of pair work and group work techniques in English classes • Part (question 4, 5, 6) was to investigate the impact of pair work and group work techniques on students’ interest and participation...

Ngày tải lên: 06/02/2014, 14:45

... accepts the received codeword and the errors are undetected 10.32 Figure 10.8 Geometric concept for finding dmin in error detection 10.33 Figure 10.9 Geometric concept for finding dmin in error correction ... coding In this coding scheme, k = and n = As we saw, we have 2k = 16 datawords and 2n = 32 codewords We saw that 16 out of 32 codewords are used for message transfer and the rest are either used for ... unused 10.15 Figure 10.6 Process of error detection in block coding 10.16 Example 10.2 Let us assume that k = and n = Table 10.1 shows the list of datawords and codewords Later, we will see how to...

Ngày tải lên: 16/02/2014, 20:20

... Management of Ireland The Institute of Project Management of Ireland was founded in 1989 to help individuals and organisations in both the public and private sectors to develop a knowledge of and high-quality ... Project Management and to establish and administer a certification process that has Irish and International recognition and acceptance The Institute of Project Management of Ireland's web site is ... organize, implement and control its activities and the ways it uses its people and resources A project is a non-repetitive one-of-a-kind activity normally with discrete time, financial and technical...

Ngày tải lên: 18/02/2014, 11:20

... discuss conclusions and future work in section Extracting Candidates Comparative-sentence In this section, we define comparative keywords and extract comparative-sentence candidates by using those ... tences from the Candidates Sen- To effectively eliminate non-comparative sentences from comparative sentence candidates with a CKL2 keyword, we employ machine learning techniques (MEM and Naïve Bayes) ... 22(1):39-71 Andrea Esuli and Fabrizio Sebastiani 2006 Determining Term Subjectivity and Term Orientation for Opinion Mining European Chapter of the Association for Computational Linguistics, 193-200 Andrew...

Ngày tải lên: 20/02/2014, 09:20

... contexts and the columns to the centroid-contexts In this paper, the number of input contexts of row and column in CSM is limited to 200, considering execution time and memory allocation, and the ... depends on title words and keywords, we need additional studies about the characteristics of candidate words for title words and keywords according to each data set Acknowledgement This work was ... n i =1 i n i =1 i i (1) n w2 i =1 i where ti and wi represent the occurrence (binary value: or 1) of words T and W in i-th document respectively, and n is the total number of documents in the...

Ngày tải lên: 20/02/2014, 16:20