Free applications to properly scan your paper documents

by Krish Karthik
Free applications to properly scan your paper documents

How to transform your paper documents into digital files?

In the old days, you had to have a scanner and juggle expert settings that were somewhat obscure for non-specialists. Home printers often integrate a scanner function, but the maneuver is sometimes long and the files recovered are much too heavy.

How to scan your documents quickly and well then?

By using the scanner that you have at the bottom of your pocket or your bag: your smartphone. Smartphones all have a high-quality camera that can take photos of any document and thus obtain a digital file.

Photos may be sufficient for simple uses, but you can also use dedicated applications that will turn your iPhone or Android phone’s camera into a real professional scanner. Here are five free apps to properly scan your paper documents and convert them into digital files. Ideal for keeping or transmitting all your important documents.

Adobe Scan – Great pocket scan with integrated OCR

Adobe Scan is all the knowledge of the giant Adobe in your smartphone. The creators of Photoshop and the PDF format offer Adobe Scan already featured here , an application for iPhone and Android for photographing documents and getting a PDF that you can share or store anywhere you want.

In addition to scanning, it has tools to improve the quality of scanning by removing shadows, highlighting text, straightening the document, removing borders … Very complete and easy to use by everyone .

Microsoft Office Lens for those who work on Office

The big player in office automation software also had to offer a solution that lived up to its reputation. Microsoft Office Lens does not disappoint. The application is available for iPhone, iPad, Android and also for Windows 10. It can scan documents and convert them into images.

The Microsoft app can also recognize texts and documents and save them in different formats. Its strength lies in particular in its excellent integration with the tools of the Office suite. From a classic PDF, you can create a Word document, PowerPoint presentation, or embed the scanned document in OneNote.

CamScanner – A good alternative to scan all your documents

CamScanne r is a serious alternative to the giants of the sector. The many users are raving about it. They are deserved. The app, which runs on iOs and Android, can recognize, straighten and scan with great efficiency any type of document with impeccable results. The application in its free version does not offer optical character recognition to extract and export text from an image. It’s a shame even if its free version is still more than sufficient for most everyday needs.

Scannable – Pocket scan by Evernote

Scannable is an app created by Evernote, the great service that helps you keep everything and remember everything. To power Evernote’s elephant memory, a simple, flexible and fast application was needed. Successful bet with Scannable which will digitize your documents at lightning speed. Just point your smartphone at the document and Scannable will automatically identify the marks and start scanning. When you have a large series of documents to scan, it is very efficient. Once scanned the documents can be saved in Evernote which will launch the OCR. You can also save your scans locally or to other online services. On iOs and Android

ScannerPro – The best Scan app for iPhone and iPad

It is to readdle that we owe Scanner Pro , which is arguably one of the best scanner apps for iPhone and Android. The scans are of high quality. The application knows how to recognize the edges of the document to be scanned. You do not need to crop the image for each scan. ScannerPro saves in all useful formats. You can use it to do character recognition. Your scans can be saved to many online services from your iphone. You can also keep them locally.

What is the difference between 1080i and 1080p?

It’s the same format, right? Not quite, one is definitely better than the other.

With so many high and ultra high definition resolution formats on the market, it can be hard to tell the difference between them. For example 1080i and 1080p. From the outside, little or nothing is revealed about their attributes or differences.

High Definition (HD) refers to a screen resolution of 1920 pixels wide and 1080 pixels high (hence the use of “1080”). This means 1080i and 1080p have the same resolution. So what’s the difference between them? Keep reading to find out.

The difference between 1080i and 1080p

The first thing to note is that the letters in 1080i and 1080p refer to the raster scan technique used. A raster scan is simply how an image is reconstructed on a display monitor.

The “i” in 1080i stands for interlace scan and the “p” in 1080p stands for progressive scan. These refer to two separate methods of producing an image on a screen at a resolution of 1920 x 1080. So if the two resolutions have 2,073,600 pixels in total, what’s the difference?

Imagine your TV screen as rows of pixels. It is 1080 pixels high, so there are 1080 rows of pixels from the top to the bottom of the TV. The refresh rate of pixels is called the refresh rate. Most televisions and displays operate at a refresh rate of 60Hz (60 refreshes per second).

For video display to work, every pixel on a digital screen must be refreshed quickly enough to perceive it as movement (even though technically the screen is only blinking individual images).

The difference between 1080i and 1080p is how those pixels are updated to produce a consistent, easy-to-view “moving” image.

What is 1080i and how does it work?

interlaced scanning produces an image by displaying the odd and even rows of pixels alternately. Thus, all odd lines are refreshed 30 times per second, and all even * lines are refreshed 30 times per second, in sequence.

Even and odd lines are refreshed 30 times per second, so an interlaced scan effectively doubles the frame rate to 60 without using additional bandwidth.

The 1080i method was produced to counter the effect when the entire screen is refreshed from top to bottom too slowly, causing the top of the screen to show half of an image different from the bottom in older CRTs. . In older screens, the top of the screen became duller and less illuminated than the bottom at the end of each swipe.

The interlaced scan format was especially important when technology was limited, and it was essential to use as little bandwidth as possible. For television broadcasting, it was an absolute necessity. But with the advent of better technology, 1080p has arrived.

1080i vs. 1080p

1080p is the format typically used on all modern screens and televisions. Instead of refreshing half the pixels at once – like 1080i – 1080p refreshes the entire screen at once. For this reason, 1080p is sometimes referred to as “true HD”.

With the entire screen refreshed at the same time, 1080p effectively processes twice as much information as 1080i at the same frame rate. The way 1080p refreshes the screen simultaneously is usually a top-to-bottom “wave” with each row being refreshed at a time. This usually means that (with a 60Hz monitor) each row will be refreshed to 1 / 60th of a second.

This is why 1080p requires more bandwidth than 1080i and why 1080i has been used more historically. Now that is no longer a limitation, 1080p has become the main format for new digital displays.

Interestingly, many TV programs are still broadcast in an interlaced format, usually 1080i. This means that 1080p compatible displays must have a deinterlacing component to properly display the image and avoid visual artifacts.

Deinterlacing is the process used to build a complete image from the two image fields of alternating rows of pixels that use 1080i. When this happens, the picture quality is somewhat reduced compared to true 1080p.

What about 4K?

Most brand new televisions and many computer monitors offer 4K capabilities. 4K is called “ultra-high definition” and has a resolution of 3840 x 2160 pixels, which is almost four times that of 1080p or 1080i (and don’t get me started on 8K). This resolution brings a massive change in the quality, clarity and sharpness of the picture.

But, as 1080p is still limited by streaming technology, 4K streaming via cable or satellite will be even more limited. That said, major sporting events are now broadcast in 4K, which means they will likely become more common over time.

One downside is that much of the 4K is compressed for more efficient transmission. This means that most of the time you don’t experience true 4K.

Which is better: 1080i or 1080p?

The main drawback of the 1080i is the display of fast movement. Since only half of the image is displayed at a time, rapid movements can cause so-called “motion artifacts”. These are weird visual effects that result from simultaneously displaying images at different positions.

1080p avoids this problem, showing much better picture quality in fast-moving scenes. Plus, 1080p is generally more vivid and lifelike, which most people prefer. The best picture quality (around 60% better) comes from the fact that in 1080i odd and even lines of pixels are not displayed simultaneously. In other words, 1080i is similar in quality to 720p.

But, one problem is that a lot of satellite and TV shows are still in the interlaced format, which means that the full quality of 1080p is not being broadcast.

With constant technological improvements in this space, progressive scan is already becoming the primary format for digital displays. Ultimately, most shows will likely use the progressive scan format.

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