comparing Text from Image
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comparing Text from Image
How to insert Image containing text in Registration Page and compare the text entered by user with that present in Image.
Re: comparing Text from Image
Here are tutorials: http://www.google.com/search?hl=en&clie ... al&spell=1
Re: comparing Text from Image
You mean a CAPTCHA, there are plenty of ready-to-use implementations available. See also this topic.
Re: comparing Text from Image
Another method for Turing test of distinguishing humas and computer is to put a image containing an object so that the user can put his name. The implementations is a MySQL table that contains the image and correct answer. You make a script that randomly picks one of the images and verify the answer. Another method is to mathematical equations or simple calculus which are also simple to implement.
Re: comparing Text from Image
Interesting idea, but if you displayed an image of, for example, a car how would validate people who enter "automobile" or "red car" or "Ferrari F430"? They'd all be correct but they wouldn't match what's in the database.Rovas wrote:Another method for Turing test of distinguishing humas and computer is to put a image containing an object so that the user can put his name. The implementations is a MySQL table that contains the image and correct answer. You make a script that randomly picks one of the images and verify the answer.
- jayshields
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Re: comparing Text from Image
Maybe he means something more simple like "Identify which shape is shown" and then you can show a square, triangle, circle, etc.
Re: comparing Text from Image
If you put a picture of a cat do you think that a majority of people will say: "That' s a male Chartreux!" and input male Chartreux no they put cat, the same goes for the Ferrari F430. Also like Jay said you could put geometric shapes or everyday objects: chair, table, a bottle, etc.onion2k wrote: Interesting idea, but if you displayed an image of, for example, a car how would validate people who enter "automobile" or "red car" or "Ferrari F430"? They'd all be correct but they wouldn't match what's in the database.
- jayshields
- DevNet Resident
- Posts: 1912
- Joined: Mon Aug 22, 2005 12:11 pm
- Location: Leeds/Manchester, England
Re: comparing Text from Image
Speaking from zero experience, I think that with CAPTCHA's, aslong as you write your own it doesn't matter how simple it is, it's going to be fine. No ones going to write a bot to spam one website (with some exceptions).
I say this because my example of geometric shapes would be much easier to crack than some of the mega obscure text CAPTCHA's out there now - which leads me onto another topic - how annoying it is when you have to guess a CAPTCHA more than once.
I say this because my example of geometric shapes would be much easier to crack than some of the mega obscure text CAPTCHA's out there now - which leads me onto another topic - how annoying it is when you have to guess a CAPTCHA more than once.