PPT-Edge-Detection and Wavelet Transform

KuangTsu Shih Time Frequency Analysis and Wavelet Transform Midterm Presentation 20111124 Outline Introduction to Edge Detection GradientBased Methods Canny Edge Detector Wavelet TransformBased Methods. CSE . 576. Ali Farhadi. Many slides from Steve Seitz and Larry . Zitnick. Edge. Attneave's. Cat (1954) . Edges are caused by a variety of factors. depth discontinuity. surface color discontinuity. illumination discontinuity. Michael Phipps. Vallary. . S.Bhopatkar. Discrete wavelet transform(DWT) is fast linear operation that operates . on a data vector whose length is an integer . power of . 2, transforming it into a numerically different vector of the same length. Student: . r03521101 Chun-Hsiang . Wang. Lecturer: . Jian-Jiun. . Ding. Date: 2014/11/27. 1. O. utline. Introduction. Wavelet Transformation. . Wavelet Zoom. Wavelet Transform Modulus Maxima. Application-Stratigraphic profiling. S. S. A. 1. D. 1. A. 2. D. 2. A. 3. D. 3. Bhushan D Patil. PhD Research Scholar . Department of Electrical Engineering. Indian Institute of Technology, Bombay. Powai, Mumbai. 400076. Outline of Talk. By. Dr. Rajeev . Srivastava. CSE, IIT(BHU). Dr.. Rajeev . Srivastava. 1. Its Understanding. Dr. Rajeev Srivastava. 2. 3. Wavelet Analysis and Synthesis . Dr. Rajeev Srivastava. Dr. Rajeev Srivastava. University of Tehran. School . of Electrical and Computer Engineering. Custom Implementation of DSP Systems - . 2010. By. Morteza Gholipour. Class presentation for the course: Custom Implementation of DSP Systems. (Section 13.10.6-13.10.8). Michael Phipps. Vallary. S. . Bhopatkar. The most useful thing about wavelet transform is that it can turned into sparse expansion i.e. it can be truncated. Truncated Wavelet Approximation. Federica Caselli. . Department of Civil Engineering University . of Rome Tor . Vergata. Corso. . di. . Modellazione. e . Simulazione. . di. . Sistemi. . Fisiologici. Medical Imaging. X-Ray. CT. Lecture . 5. DCT & Wavelets. Tammy . Riklin. Raviv. Electrical and Computer Engineering. Ben-Gurion University of the Negev. Spatial Frequency Analysis. images of naturally occurring scenes or objects (trees, rocks, . ECE, UA. 12 Lead ECG Interpretation. Anatomy Revisited. RCA. right ventricle. inferior wall of LV. posterior wall of LV (75%). SA Node (60%). AV Node (>80%). LCA. septal wall of LV. anterior wall of LV. Michael Phipps. Vallary. S. . Bhopatkar. The most useful thing about wavelet transform is that it can turned into sparse expansion i.e. it can be truncated. Truncated Wavelet Approximation. Arbitrary chosen . This paper was published in the journal . Signal Processing: Image Communication, EURASIP, 2005 . . Goal of the method proposed. Goal. . . Early detection of fire before it spreads around.. Why?. . What is Edge Detection?. Identifying points/Edges . in a digital image at which the image brightness changes sharply . or . has . discontinuities. . - Edges are significant local changes of intensity in an image.. Edge. Attneave's. Cat (1954) . 2. Edges are caused by a variety of . factors.. depth discontinuity. surface color discontinuity. illumination discontinuity. surface normal discontinuity. Origin of edges.