Which machine learning algorithm should I use to identify these sections?

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I'm looking to identify the part I marked in red (this part is written with many variations but the structure remains the same, i.e size, orientation may change, shape may change very slightly) in the image below from a set of images:
I can train it using some images and then I want to test it on some unknown cases. For example here are some examples of the same word written in different styles, that is with slight variations.
I am only interested in identifying the part marked in red.
So for example if I cut out my part I am interested in from all of the images in the above link and train the classifier using those. Then when a similar new image is given to the system it should be able to identify id and locate it in the original image? Would that be possible?
The machine learning algorithms that I have so far come across are SVM, SIFT and neural network. I did not want to go into too much detail of each method unless I was sure it was the solution I was looking for.
Which machine learning algorithm should I look into?
Faraz on 2 May 2014
I will be using the IFN Databse.
I want to cut out the red part and train the classifier with at least 10 different variations of it. And then see if it can match the test data with the trained data. Is that possible?

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Accepted Answer

Image Analyst
Image Analyst on 2 May 2014
Would this help:
See how other people have done it, and use those successful, published algorithms.
Image Analyst
Image Analyst on 2 May 2014
If you're at a university I believe they can get you the paper "for free" as part of (included in) your tuition or employment.

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