Rank: 639 based on 114 downloads (last 30 days) and 2 files submitted
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Yuan-Liang Tang

E-mail
Company/University
Chaoyang University of Technology

Personal Profile:

Associate Professor, Department of Information Management, Chaoyang University of Technology. 168 Jifong E. Rd., Wufong Township,
Taichung County 41349, Taiwan, R.O.C. http://www.cyut.edu.tw/~yltang/

Professional Interests:
Image processing, digital watermarking, computer vision, pattern recognition

 

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Files Posted by Yuan-Liang View all
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(last 30 days) 		Comments Rating
29 Jul 2009 Image normalization and inverse normalization Performs image normalization and inverse normalization against affine transformation Author: Yuan-Liang Tang geometric transformat..., geometric t, image normalization, inverse normalization, image registration, image moments 74 9
  • 5.0
5.0 | 3 ratings
07 Jan 2009 Screenshot Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang image processing, circles, hough transform, center 41 11
  • 4.42857
4.4 | 7 ratings
Comments and Ratings by Yuan-Liang View all
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10 Apr 2011 Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang

Sushma,
  minR and maxR are the minimal and maximal radii (in pixels), respectively, of the circles that you want to detect in your image. For the image I provided along with the program, I set minR=20 and maxR=40. If you still have problems, you may want to provide your image and I'll look into the problem.

Yuan-Liang Tang
11 Jun 2009 Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang

sanjay,
The most probable cause might be that you invoked the function using inappropriate parameters. The function allocate a 3D matrix of size [size(im,1)+maxR, size(im,2)+maxR, maxR-minR+1], where minR and maxR are the minimal and maximal radii of circles you want to detect, respectively. You may want to check if the size of your input image or the values of minR and maxR are really huge.
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10 Apr 2011 Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang Tang, Yuan-Liang

Sushma,
  minR and maxR are the minimal and maximal radii (in pixels), respectively, of the circles that you want to detect in your image. For the image I provided along with the program, I set minR=20 and maxR=40. If you still have problems, you may want to provide your image and I'll look into the problem.

Yuan-Liang Tang
10 Apr 2011 Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang Bhandari, Sushma

im unable to detect the circles.what should be the minR and mixR,can anyone help me?
28 Jul 2010 Image normalization and inverse normalization Performs image normalization and inverse normalization against affine transformation Author: Yuan-Liang Tang vikas

hello sir
I am doing my ph.d in watermarking. presently i am doing the literature survey on different methods and in the initial stage of phd. I had gone through yoyr paper " digital watermarking robust to .... I had undrstand the normalization and inverese of it. but watermaring part is not clear. can u please send me the code for watermarking . my mail address is sushila_maheshkar@yahoo.com
thank u in advance
10 Jan 2010 Image normalization and inverse normalization Performs image normalization and inverse normalization against affine transformation Author: Yuan-Liang Tang Nauli Risya, Martino

hello all,

could you also provide the code for ds-cdma watermark embedding and extraction..?

thank you in advanced
07 Dec 2009 Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang Christoph
Top Tags Applied by Yuan-Liang
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geometric t, geometric transformation, image moments, image normalization, image processing
Files Tagged by Yuan-Liang View all
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
29 Jul 2009 Image normalization and inverse normalization Performs image normalization and inverse normalization against affine transformation Author: Yuan-Liang Tang geometric transformat..., geometric t, image normalization, inverse normalization, image registration, image moments 74 9
  • 5.0
5.0 | 3 ratings
07 Jan 2009 Screenshot Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang image processing, circles, hough transform, center 41 11
  • 4.42857
4.4 | 7 ratings

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