How to Make Your Photos Look Like Scanned Documents

So, you wanna turn those pictures of paper docs into something pro and pristine? I feel you. It’s totally doable! Here are some tips that might help you out.

1. Lighting is Everything!

Natural light is your best friend here. Try taking pics near a window during the day. Avoid shadows or direct sunlight, though—it can mess with your colors!

2. Angles Matter

Make sure you hold your phone straight above the paper to avoid weird perspective. If you angle it wrong, the edges can look all wonky and not straight. Not cool!

3. Use the Right Apps

Yeah, there are a bunch of apps that can help turn your pics into something more “scanned.” Some popular ones are:

• CamScanner – super popular and has decent features.
• Adobe Scan – makes it all look pro and lets you save as PDF.
• Microsoft Office Lens – great for saving notes and sharing easily.

Give them a shot and find out which one you vibe with!

4. File Formats

Absolutely! Saving as JPEG is cool, but you might get better results with PDFs. They keep things tidy and don’t mess with quality. Plus, PDFs are easier to share without weird format issues.

5. Organizing Your Files

Trust me, you don’t wanna end up with a jungle of files. Try creating folders for each project or type of document. You can even date your files! Like, 2023-10-01_Invoice.pdf. Makes it easier to find stuff later.

6. Final Touches

After you take the pics, always check for clarity and adjust the colors using the apps. Some of them have filters that can clean up your images a bunch.

Hopefully, this helps you out! Getting those document pics to look pro doesn’t have to be a headache. Just remember: good light, straight angles, and the right apps. Happy snapping!

Decoding Input Events from /dev/input/eventx in C

It sounds like you’re diving into some interesting territory! When you read input events from /dev/input/eventx, you’re absolutely right: each event consists of a type, code, and value. Let’s break it down a bit.

Event Structure

For example, when you get an event with EV_KEY, this indicates a keyboard input. The code represents a specific key (like KEY_A, KEY_B, etc.), and the value tells you what happened:

• 0 usually means the key is released.
• 1 means the key is pressed.

Mapping Key Codes

To translate these key codes into human-readable forms, you can refer to the Linux input event codes documentation, which lists the constants like KEY_A, KEY_B, etc. You might also find structures in header files such as linux/input.h useful.

Code Snippet

Here’s a simple way you could decode those values:

#include <linux/input.h>
#include <fcntl.h>
#include <unistd.h>

int main() {
    // Open the input device
    int fd = open("/dev/input/eventX", O_RDONLY);
    struct input_event ev;

    while (read(fd, &ev, sizeof(struct input_event)) > 0) {
        if (ev.type == EV_KEY) {
            printf("Key %s: %s\n", 
                (ev.code == KEY_A) ? "KEY_A" : 
                (ev.code == KEY_B) ? "KEY_B" : "Other", 
                (ev.value) ? "Pressed" : "Released");
        }
    }

    close(fd);
    return 0;
}
    

Libraries and Tools

You might also want to check out libraries like libevdev. It can simplify managing input devices significantly. It provides a higher-level API for dealing with events, so you might want to explore that.

Common Quirks

As for quirks, some devices may send unexpected events or require debouncing logic (especially if they are low-quality or mechanical). Monitor the events closely to catch any odd patterns you might need to address.

Wrapping Up

Overall, don’t hesitate to dive into the kernel’s documentation and source code; they can provide valuable insights! Have fun coding! 🚀