Software recommendation: quick transformation image math formula conversion editable document

In their daily teaching, mathematics and chemistry teachers often have to write various formulas, but since formulas are not simple characters and cannot be entered directly into Word, entering those uncommon formulas can be a headache for teachers. However, we can quickly identify handwritten formulas by scanning them with the help of Mathpix, then process them by editing them in LaTeX, and finally import them into the Office software we all commonly use.

Quickly recognize mathematical and scientific formulas

Mathpix can be found at https://mathpix.com下载 (supports Windows, Apple and Linux), and after installation and startup you can use its OCR recognition function. Since Mathpix uses online recognition, please make sure your local computer is connected to the Internet during use.

First of all, write the formula you need to input on an ordinary white paper. In order to recognize more accurately, you must pay attention to the specification of the formula, neat and clear font when writing. Then use WeChat to shoot the transfer to the computer, and open the written formula picture in the computer WeChat terminal (Figure 1).

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Figure 1 Screenshot recognition

At this point, press Ctrl+Alt+M to take a screenshot and Mathpix will quickly recognize it and automatically output an editable formula.

Precise correction of recognition errors

Mathpix recognizes the handwritten formulas with slight errors, such as the underscore of the average velocity V and “t/2” in this example (Figure 2).

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Figure 2 Viewing recognition results

However, the recognition results of Mathpix are editable in LaTeX syntax, so we can directly double-click on the command below and then modify it in the edit window. Those who are familiar with LaTeX syntax can see that the characters in various positions in the formula are formed by syntax commands that can be edited. For example, if we want to change V to the average speed, then just type “overline{V}” before the t-letter for

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For the “1/2t” modification, follow the prompts to change the original syntax of t to “{frac{t}{2}}”, so you can get the exact formula. After completing the above changes click “Copy Png”, the current formula will be copied as a picture and pasted into Word and other software can be used (Figure 4).

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Figure 4 Copy image to Word

Usually many formulas, teachers are obtained through the Internet search, we can also open the web page directly in the interception and recognition, and then in Mathpix to make precise changes, so that the online picture formula quickly into editable formulas too (Figure 5).

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Figure 5 Recognition of web formulas

Direct manual input of formulas

Since Mathpix’s formulas are actually composed of command codes, we can generate various formulas we want by editing the codes directly. Press Ctrl+Alt+M to activate Mathpix, then enter the formula code you need to generate in its editing window, and the corresponding formula will be displayed at the top of the main window (Figure 6). The basic syntax of LATEX mathematical formulas can be viewed at https://www.cnblogs.com/houkai/p/3399646. html, you can follow the introduction to “write” the format you need.

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Figure 6 Enter the code to generate the formula

Tip.

★ In addition to the recognition of formulas, Mathpix can also recognize other foreign languages. For example, some English PDF documents can not be edited, or some pictures on the text needs to be converted into editable text. As above, open the PDF document and press Ctrl+Alt+M key combination to activate the screenshot, intercept the PDF or picture on the English statement will automatically be converted into editable text, according to the prompt to copy it to Notepad or Word for editing, the same for other languages we can not identify the text, such as some pictures on the French, German, the use of Mathpix to identify Then copy it to Baidu Translate for translation (Figure 7).

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Figure 7 Recognizing English statements

As you can see from the above introduction, Mathpix is able to edit and input formulas by scanning picture formulas into editable LATEX syntax, which is different from inserting formulas in Word. In Word we can only enter a limited, system-preset formulas, and only simple editing. Although Word also provides a way to enter formulas by hand for us to customize our input, the recognition rate is lower compared to Mathpix, and obviously cannot be compared to the directly editable LATEX syntax. It is highly recommended that teachers who often need to enter formulas use Mathpix for formula recognition and input (Figure 8).

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Figure 8 Low recognition rate of handwritten input formula in Word

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