OCR

Has your face broken by reading your friend’s hand? Still, you should feel lucky, because you do not work at any post office – where thousands of hand-written letters are broadcast every day. Today, our life is gradually becoming computer based, so there is a need to have a good understanding between people and computers. We use “keyboard” or “mouse” to talk to almost every type of computer, so that they can easily understand what we want them to do. But when the computer is asked to read the book directly or read the letter written in hand, then the computer has to do nothing more to complete it. And here comes the optical character recognition (OCR) to work. It is a computer program or software that can automatically analyze a printed text or handwriting and take it in one form so that the computer can easily understand it. The handwriting keyboard you wrote on your cellphone also works with OCR. But how does it work? Let’s know the details.
What is OCR?

What is ocr

When you read these texts on a computer screen or mobile screen, your eyes and your brain are constantly using optical character recognition methods, even if you are not sure about the point. Your eyes are trying to detect different characters such as letters, numbers, and punctuation by using the black and white pattern of this screen, and your brain tries to read the letters with those letters, numbers and punctuation.

Computers can do this, but people can not do so easily. The first problem is that the computer has no eye, so if you want to read an old book or your handwriting with the computer, then scan it with The page you created in this method will be created as a graphic file (usually JPEG file). But there is no difference between your photo or the picture of the Sundarbans in the computer, that is, the computer can not get any meaning from the graphic or the pixel pattern of the photograph. The computer has no value for the text-filled page, because you can read any page, the computer can not read it anyway. The OCR program converts its text from any image into text – or it can save the text from image or handwriting to TXT or OOC file.
How does OCR work?

Letter-66951_1280

I think our life is so simple and in our alphabet there is only one character “A”. Now if you think about it, you will see that OCR will face many problems, even if only one character – every person will write this “A” completely differently. Even if you are talking about computer printed text, there are problems too – because different books and documents have been written using different printers, so this letter “A” separately Will be written.

How can OCR recognize writing? Roughly, there are actually two ways of working. Identify each letter in its possible pattern (pattern recognition) and the second is to recognize each letter in each letter, remembering that character with every fine line (detecting feature).
pattern recognition

If everyone writes a letter like “A” in the same way, then the computer will be very easy to recognize it. Then only the computer will scan “A” with its stored “A”, if both are matched, then the work is done.

But now the question is how do you teach all the same handwriting? In the 1960s, a special phone was upgraded to write blank check, named “OCR-A”. Then only one font was used in every check, so the optical character recognition or OSR could easily understand the font. But currently using the same font to print various books or documents around the world Not to be done, and no handwriting on anyone. The way to get rid of this problem is to train the OCR program to identify each letter so that the program number can be used to identify the letter. The program rated popular fonts remembers the number of a number and tries to recognize scanning and letters while decoding those numbers. There is no guarantee that 100 percent of the characters you wrote in this system can be identified.
Feature Detection

This is the most intriguing way to identify a character. Now, assuming your own OCR computer program, you have put together several letters in front of you, where different characters are written using different fonts. How can you recognize these characters? They are all written in different ways!

You can find a good rule to make your work easier. When you see two curved lines and you see that another line is attached to the two lines at the top, and the bend line is divided into two parts and the second row is flat in the top or middle of the plane, you can easily You can understand that this character is “A”. And by using this method, you can recognize uppercase letters, even if any font is written using any font. It is possible to easily identify any character without remembering the alphabet if each line of the axis is a subtle line and position of each position. Most modern OCR programs use methods to detect convenience compared to pattern recognition methods. Some programs work using neural networks (this is the method, where computer programs operate as human brains. Can work). We will write soon a new post about neural networks.
How Writing Recognition Works?

Handwriting recognition

The computer has been printed with laser printers and it is relatively easy to reconnect the computer. But when the computer wants to read people’s handwriting, then 12 times the computer. The human brain works very long in this case from any computer, but we can not fully understand the worst handwritten text in the world, but we can assume that we use the feature detection method to make any character Let’s try to identify that there is a clear idea about what the author and what is written in our brain. . But the computer can never work so intelligent.

When you write something on a tablet computer or smartphone’s handwriting keyboard, it becomes easy to identify the computer. If you try to type “A”, then the touchscreen feels the line drawn to you, first you draw a long curved line, then ends with another long curved line and then another plane line. Here, the computer is able to understand how a line was drawn and after drawing will appear in the letter “A”. The computer uses the feature detection method. But recognizing the handwriting of any Abrothbro on any paper is not so easy. To write handwriting on the computer, you have to write only after following a specific rule, and the rules of this writing are called the combos field.
OCR Facilities

If a printed page is capable of raiding the machine, then you can do all the things you could never have before. Editing text from the printed page can be done by the word processing software, and you can create text in the webpage. Completely compress the text of the pages and save space. You can also send mail using text from the print page. Machine readbooth is easily capable of reading and understanding any screen reader

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