Image Processing – Conventional Triangularization in Image Processing?

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Java – How can I send a Base64 image?

I'm looking forward to a post request with a base64 image. When I submit the request, I get the error message "ERROR_IMAGE_SIZE_0".

import *;
import *;
import java.util.Base64;

public class Main {

public static void main (string arguments[]) throws IOException {
File originalFile = new file ("sec_token.php.png");
String encodedBase64 = null;
To attempt {
FileInputStream fileInputStreamReader = new FileInputStream (originalFile);
byte[] Bytes = new byte[(int)originalFile.length()]; (bytes);
encodedBase64 = new string (Base64.getEncoder (). encodeToString (Bytes));
} catch (FileNotFoundException e) {
e.printStackTrace ();
} catch (IOException e) {
e.printStackTrace ();

System.out.println (encodedBase64);
HttpURLConnection con = (HttpURLConnection) new URL ("" + encodedBase64) .openConnection ();

String USER_AGENT = "Mozilla / 5.0 (Win NT 10.0; Win64; x64; rv: 63.0) Gecko / 20100101 Firefox / 63.0";
System.out.println ("User Agent:" + USER_AGENT);
// add request header
con.setRequestMethod ("POST");
con.setRequestProperty ("Host", "");

con.setDoOutput (true);
DataOutputStream wr = new DataOutputStream (con.getOutputStream ());
BufferedReader in = new BufferedReader (new InputStreamReader (con.getInputStream ()));
String inputLine;
StringBuffer response = new StringBuffer ();

while ((inputLine = in.readLine ())! = null) {
response.append (inputLine);
String res = response.toString ();
System.out.println (res);

php – Upload the image from the Android application to the server without losing quality

I'm trying to upload an image to my server, which was taken from the camera of my mobile phone. I have investigated how it is possible and I have found that it is possible to convert base64 It is possible not to distinguish the letters

Enter the description of the picture here

To upload to the server I use the following code:

private string convertImage (bitmap image) {
ByteArrayOutputStream baos = new ByteArrayOutputStream ();
image.compress (Bitmap.CompressFormat.JPEG, 100, baos); // bm = bitmap
byte[] b = baos.toByteArray ();
String encodedImage = Base64.encodeToString (b, Base64.DEFAULT); // coded picture

return encodedImage;

After encoding the image I generate a JSON and in the command the image and other information by post with retrofit2 to the server:

    private void callBack () {
alertDialogProgress ();
Retrofit retrofit = new Retrofit.Builder ()
.baseUrl (ApiInterface.URL_BASE)
.addConverterFactory (ScalarsConverterFactory.create ())
.addConverterFactory (GsonConverterFactory.create ())
.build ();

String picture = convertImage (saveImage);
String descriptionIncidence = textDescription.getText (). ToString ();
String idEmployee = "1"; // value from the preferences file

ApiInterface apiInterface = retrofit.create (ApiInterface.class);

JSONObject jsonObject = new JSONObject ();
try it
jsonObject.put ("idEmployee", idEmployee);
jsonObject.put ("descriptionIncidence", descriptionIncidence);
jsonObject.put ("image", image);
} catch (JSONException e) {
e.printStackTrace ();
String json = jsonObject.toString ();

Call userCall = apiInterface.createIncidence (json);
userCall.enqueue (new callback() {
@Run over
public void onResponse (Call call, answer Answer) {
if (response.isSuccessful ()) {
DoneObject doneObject = response.body ();
Toast.makeText (NewIncidenceActivity.this, doneObject.getDone (), Toast.LENGTH_LONG) .show ();
alertProgress.dismiss ();
break up ();
@Run over
public void onFailure (Call call, throwable t) {
Log.e ("ret2", t.getMessage ());
Toast.makeText (NewIncidenceActivity.this, t.getMessage (), Toast.LENGTH_SHORT) .show ();
alertProgress.dismiss ();

On my server I get the data, I decode the image and save it in a directory.

Query ($ query) === TRUE) {
print (json_encode (
Array (
& # 39; done & # 39; => & # 39; done & # 39;
} else {
print (json_encode (
Array (
& # 39; done & # 39; => $ connection-> error
mysqli_close ($ connection);


I appreciate any kind of help or advice

linux – Could an infected .iso file infect a PC running a burning or image program?

I do not seem to be able to find much on this subject, but I was worried when I realized that I downloaded my Raspbian image from HTTP and wrote it to a USB stick without verification.

I'm worried, especially because I do not trust the security of my family's router (although her modem seems to be fine, it's a new and up-to-date Xfinity modem with perhaps a custom password, maybe not at second glance but still, at least it's up to date), so I'm worried that a MITM attack with remote access to the router could ruin my file.

And after all, I'm worried that my computer will get infected because it needs root privileges to write the .iso file over Etcher to a drive. The etcher is based on electron and could be a bit sandboxing, but I'm not sure. I am not sure, but at the same time only the file and partition structure are copied to a USB stick and extracted. As far as I know, I can not read anything, so I'm not sure.

I have a JPEG image of size 5760X3840, but when I tried to upload a website or try to display some lines on the phone that affected it. it looks ugly

I have a JPEG image of size 5760X3840, but when I tried to upload a website or try to display some lines on the phone that affected it. it looks ugly. I've tried to downsize the image to 1200X800 and it looks fine, but the quality is gone. How to fix this problem without losing quality.
It would be really great that someone helps me now. Thank you in advance 🙂Enter the image description here

Enter the image description here

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wordpress – Default Featured Image vs. Custom Featured Image, which is better for SEO purposes?

I have a WordPress website. My content consists of 99% texts. Therefore, I upload any pictures or videos in the post. I know that the "featured image" in a post is crucial for SEO purposes (search engines will definitely rank and rate the site higher if you have it).

I think of the standard solution for imagined pictures, that is, whenever I do not upload the picture manually – the default picture (dummy picture) will be applied to the post as "picture of the featured post". So the picture stays the same for 99% of the posts I have, but the picture attributes are related to the title of the post.

Is it really that bad, or if I will upload the custom image for each new post, will it be much better in the case of SEO?

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Bulk Image Downloader is an application specifically designed to download full-size images from almost any web gallery or web forum.


Support for Image Hosts – BID works with almost all popular image hosting sites such as Flickr, Imagevenue, Imagefap, Imageshack, Imagebam, etc.
Social Networking Sites – BID supports the downloading of albums from websites like Facebook, Myspace and Twitter-related hosts like,,
Full Size Images – BID uses an advanced heuristic rating method to find full size images. This means that BID can run automatically in most galleries without the need for user configuration.
Batch Download – Automatically download large lists of gallery URLs through the built-in queue manager.
Web Browser Integration – BID is integrated with IE, Opera, FireFox and Chrome. Just right-click in your browser window and select "Open current page with BID".
Web Forums Support – BID can search multi-page forum threads and quickly extract all image links
Multi-page Downloads – BID instantly recognizes and downloads most multi-page web galleries.
Password Protected Websites – BID prompts for usernames and passwords when the site requires it.
Downloading Videos – Not Just Images – BID also supports downloading videos from directly linked video files (.avi, .wmv, .mpeg, .mov, .flv, .mp4, etc.).
Embedded images – In addition to finding and downloading full-size images, BID can also download images embedded on a page
Sequenced Image File Names (Fusker) – BID supports URLs with "ordered" URLs for downloading sequenced images.
Image Review – BID scans each image to make sure it's downloaded correctly. Invalid images are automatically repeated.
Continue Downloads – BID continues downloads from the point at which the connection was lost.
Multi-threaded download – BID allows up to 50 images to be downloaded at one time. Download these galleries quickly!
Redirection Resolution – Some sites use image redirection services such as imagecash, urlcash, and so on to display ads before they are redirected to the image host. BID resolves these types of links automatically.
Inappropriate filenames – BID retrieves the correct filename from image hosts that (if possible) encrypt the filenames, eg. Eg, imagevenue, imagefap.
Generate Filenames – Optionally, you can create your own sequenced file names for image hosts that encrypt the filenames.
Export galleries to HTML or BB code – Quickly generate gallery code that is suitable for insertion into web forums.
Advanced Configuration – BID provides many advanced settings for Javascript processing, redirection processing, and more for tricky galleries that prevent BID download attempts. We are happy to help you with these settings if you are stuck. Just contact us.
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8 – The image URL is corrupted in the email

I'm working on a Drupal 8 project and trying to send the site logo in email notifications. Everything is fine except the logo image. It seems that the image URL is broken something like this:

My public file path is: sites / default / files and visit http: Render my website logo perfectly.

Why is Gmail changing my website logo URL?