how i can extract transition feature of a signature.
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Transition features (TF) records the locations of transitions between foreground pixels and background pixels in a binary image, the foreground pixels being the 1’s and the background pixels being the 0’s. The image is traversed in the following four directions: left to right, right to left, top to bottom and bottom to top. Each time there is a change from ‘0’ to ‘1’ or a change from ‘1’ to ‘0’, then the ratio between the location of the transition and the length/width of the image traversed is recorded as a feature. An averaging algorithm is used to obtain values in the range 0 to 1. The ratios of the x and y positions of the transitions for each of the four directions are recorded, yielding 8 features. In addition to these 8 features, the total number of transitions is also recorded, giving a total of ten features.
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ebru temiz
on 10 Jan 2015
Hi,did you solved this problem.i work signature recogniiation system.And if you have found tf features,i can use of course if you gıve me?
Answers (2)
Walter Roberson
on 23 Sep 2011
There is no provided MATLAB routine that will calculate these for you. You will need to calculate them yourself, implementing the algorithm described in your posting.
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Image Analyst
on 10 Jan 2015
Sounds like you might be able to use graycomatrix() in the Image Processing Toolbox.
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