how i can extract transition feature of a signature.

Question

Jyoti 2011-9-23

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回答： Image Analyst 2015-1-10

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 2015-1-10

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?

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Answer 1

Walter Roberson 2011-9-23

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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.