Optical Character Recognition Best Program

Optical Character Recognition Best Program' title='Optical Character Recognition Best Program' />Sudoku Generator, Solver and Assistant. Sudoku puzzles have only one rule, but they can be fiendishly difficult to solve. The rule is simply this Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. Sad. Man Software Sudoku is a fantastic tool to help you solve these puzzles. It can act as an assistant. Or, it can solve the puzzle completely automatically and provide the detail of the. If you get stuck, it can provide you. Features. It can create an effectively unlimited number of Sudoku puzzles with various degrees of difficulty, or. Every puzzle has a unique solution. It solves Sudokus using exactly the same techniques that a human would, so you can follow the logical. When solving automatically, it creates a log that shows the reason for entering each number in each. This is great for learning the. It can provide increasingly detailed hints. It first gives a fairly vague hint, then adds more detail. Great for learningThe Unicode in Action tutorial is a 90 minute session that demonstrates programming with Unicode and related best practices. This tutorial will build a simple. Marc Weber Tobias Contributor. I am an investigative attorney and physical security specialist. Opinions expressed by Forbes Contributors are. Free OCR Software Downloads Last Updated May 2014. FreeOCR. net is a list of totally free OCR Optical character recognition software packages available to. Unofficial postal abbreviations, acronyms, terms, MODS numbers, and trademarks glossary by Douglas Boynton Quine. Automatic numberplate recognition ANPR see also other names below is a technology that uses optical character recognition on images to read vehicle registration. If you want to convert any printed text into digital text that you can copy, paste, edit, and search, youll need to use Optical Character Recognition OCR. Optical Character Recognition Best Program' title='Optical Character Recognition Best Program' />It can open images of Sudoku puzzles, and extract the puzzle using optical character recognition OCR. This means you can dragndrop an image of a puzzle from a website, and the puzzle is automatically imported. If you enter a puzzle with multiple solutions, it can determine how many there are, and then show them. If only Sky One had used this to avoid the fiasco of their giant prize puzzle with 1. It can show the possible candidates pencil marks for each cell and optionally keep them. You can also drag and drop an image from your computer JPEG, PNG, GIF, BMP, SVG, or NetPBM to feed into the text recognizer or choose a file by clicking anywhere on. Viewers of BBCs News at Ten were entranced last night when a glitch in its system produced over four minutes of surreal beauty. As the program began, the usual. Keep parents involved with monthly newsletters filled with advice for parents on how to boost student success. About FreeOCR. FreeOCR is a free Optical Character Recognition Software for Windows and supports scanning from most Twain scanners and can also open most scanned PDF. This removes the tedium and lets you focus on the logic. It can highlight andor prevent invalid entries. When pasting from the clipboard, it will accept a wide variety of text styles. This is extremely useful if you want to copy from discussion forums, websites etc. It can print the Sudoku puzzle enabling you to solve away from your computer if you prefer. Small and simple to use. Affordable Currently available in. Chinese simplified. Brazilian Portuguese. These additional language packs can be downloaded from the translations page. If youd like to translate Sudoku into your own language please contact me for details I can provide a machine translation as a starting point. Id be happy to provide a free registration or two in return as a small thank you. Sudoku will solve all puzzles including those in the fiendish category published in The Times, as well as those that are even harder. Want to know whats changed recently, or whats coming up in the next versionTake a look at the change history. Sudoku and youre good with numbers and math you should try your luck at one of the. This program is for desktop Windows only. Sorry, but it wont work on a Mac, Android or Linux. Although the good news for Linux users, is that Ive been informed it will run fine under. Decoding CAPTCHAs. Most people dont know this but my honors thesis was about using a computer program to read text out of web images. My theory was that if you could get a high level of successful extraction you could use it as another source of data which could be used to improve search engine results. I was even quite successful in doing it, but never really followed my experiments up. My honors adviser Dr Junbin Gao http csusap. I should write some form of article on what I had learnt. Well I finally got around to doing it. While what follows is not exactly what I was studying it is something I wish had existed when I started looking around. Legal StuffDisclaimer. I am posting this article solely for information and educational purposes. I do not condone the use or act of ethical or unethical hacking nor circumvention of copy protection etc The use of this code for any unethical or illegal purposes is not condoned by myself nor any other persons mentioned in this article. This work is licenced under a Creative Commons Licence. So as I mentioned essentially what I attempted to do was take standard images on the web, and extract the text out them as a way of improving search results. Interestingly I based most of my researchideas by looking at methods of cracking CAPTCHAs. A CAPTCHA as you may well know is one of those annoying Type in the letters you see in the image above things you see on many website signup pages or comment sections. A CAPTCHA image is designed so that a human can read it without difficulty while a computer is unable to. This in practice has never really worked with pretty much every CAPTCHA that is published on the web getting cracked within a matter of months. Knowing this my theory was that since people can get a computer to read something that it shouldnt be able to, then normal images such as website logos should be much easier to break using the same methods. I was actually surprisingly successful in my goal with over 6. I used in my sample set. Rather high considering the variety of different images that are on the web. What I did find however while doing my research was a lack of sample code or applications which show you how to crack CAPTCHAs. While there are some excellent tutorials and many published papers on it they are very light on algorithms or sample code. In fact I didnt find any beyond some non working PHP scripts and some Perl fragments which strung together a few non related programs and gave some reasonable results when presented with very simple CAPTCHAs. None of them helped me very much. I found that what I needed was some detailed code with examples I could run and tweak and see how it worked. I think I am just one of those people that can read the theory, and follow along, but without something to prod and poke I never really understand it. Most of the papers and articles said they would not publish code due the potential for miss use. Personally I think it is a waste of time since in reality building a CAPTCHA breaker is quite easy once you know how. So because of the lack of examples, and the problems I had initially getting started, I thought I would put together this article with full detailed explanations working code showing how to go about breaking a CAPTCHA. Lets get started. Here is a list in order of things I am going to discuss. Technology used. All of the sample code is written in Python 2. Python Image Library. It will probably work in Python 2. I had installed. To get started just install Python then install the Python Image Library. Prefix. I am going to hardcode a lot of the values in this example. I am not trying to create a general CAPTCHA solver, but one specific to the examples given. This is just to keep the examples short and concise. CAPTCHAs, What are they Anyway A CAPTCHA is basically just an implementation of a one way function. This is a function where it is easy to take input and compute the result, but difficult to take the result and compute the input. What is different about them though is that while they are difficult for a computer to take the result and output the inputs, it should be easy for a human to do it. A CAPTCHA can be thought of in simple terms as a Are you a human test. Essentially they are implemented by showing an image which has some word or letters embedded in it. They are used for preventing automated spam on many online websites. An example can be found on the Windows Live ID signup page https signup. MBI wreplyhttp 2. F2. Fmail. live. Fdefault. Net Collections Kennesaw'>Net Collections Kennesaw. GB bk1. 24. You display the image, the human decodes the text in it and enters it into the form. A simple idea which seems like a good solution to the problem of a computer coming along signing up for thousands of spam email accounts or posting thousands of threads in your forum trying to sell viagra. The problem is that AI, in particular image recognition techniques have evolved and become very effective in certain areas. OCR Optical Character Recognition is pretty accurate these days and can easily read printed text. The solution was to add lines and colours and generally mess up the text in the image you are asking the human to decode to try and confuse the program. Basically what you have here is an arms race, and like every other arms race arms generally beat armour. Defeating a CAPTCHA which has been obscured is a little more difficult but still not impossible. Plus the image being generated cannot be too crazy or the human will not be able to read them. The above image is an example of the CAPTCHA we are going to decode. This is a live CAPTCHA posted on an actual website and not just a test image I have created. It is a very simple CAPTCHA, consisting of text which is a uniform size and colour against a white background with some noise pixels, colours, lines thrown in. You might think that such a CAPTCHA is difficult to decode because of this noise, however I will show that it can easily be removed. This CAPTCHA while not very strong is a good example of home coded CAPTCHAs which exist on the web. How to identify text in imagesHow to extract text in images. Many methods exist for identifying where text lives in an image and extracting it. A simple Google search will list thousands of articles which have new techniques and algorithms for identifying text. Examples include using image filters which blur the image horizontally and look for darker areas because the blur causes the text to be highlighted. Edge detection filters which just leave the outline of text, pattern detection, colour extraction etc For the purposes of this example I am going to use colour extraction. The reason for this is that it is a simple technique which I have had a lot of success in. Its the technique I used for my thesis which produced quite good results. The algorithm I am going to use against our example CAPTCHA is known as multivalued image decomposition. Essentially it is means is that we first build a histogram of colours in the image. This is done by taking all of the pixels, grouping them by colour and counting each group. Looking at our example you can see that means there will be about three main colours which will be quite common, either the background white the noise lines grey or the text red. Doing this in Python is very easy. B S Recorder Gold 10 Serial here. The following code will open an image, convert it to a GIF makes things easier since it has 2. Photoshop Portable 13 0 1 1 Multilingual more. PIL import Image. Image. opencaptcha.