Get image size with JavaScript In order to read the data from an image you’ll need to make sure it’s first loaded. Here’s a callback-based approach and two promise-based solutions: Callback const getMeta = (url, cb) => { const img = new Image(); img.onload = () => cb(null, img); img.onerror = (err) => cb(err); img.src … Read more
I’ve upvoted Johannes’ answer because he’s right about that. * A few comments have been raised that my original answer was not correct. It worked if alpha values were inverted from the normal. By definition, however, this won’t work in most cases. I’ve therefore updated the formula below to be correct for the normal case. … Read more
Contrast and brightness can be adjusted using alpha (α) and beta (β), respectively. These variables are often called the gain and bias parameters. The expression can be written as OpenCV already implements this as cv2.convertScaleAbs() so we can just use this function with user defined alpha and beta values. import cv2 image = cv2.imread(‘1.jpg’) alpha … Read more
Simply replace image/jpeg with application/octet-stream. The client would not recognise the URL as an inline-able resource, and prompt a download dialog. A simple JavaScript solution would be: //var img = reference to image var url = img.src.replace(/^data:image\/[^;]+/, ‘data:application/octet-stream’); window.open(url); // Or perhaps: location.href = url; // Or even setting the location of an <iframe> element, … Read more
In jQuery, a new element can be created by passing a HTML string to the constructor, as shown below: var img = $(‘<img id=”https://stackoverflow.com/questions/8013792/dynamic”>’); //Equivalent: $(document.createElement(‘img’)) img.attr(‘src’, responseObject.imgurl); img.appendTo(‘#imagediv’);
If you have a look at the documentation for Html.fromHtml(text) you’ll see it says: Any <img> tags in the HTML will display as a generic replacement image which your program can then go through and replace with real images. If you don’t want to do this replacement yourself you can use the other Html.fromHtml() method … Read more
AngularJS <img ng-src=”https://stackoverflow.com/questions/45040843/{{imagePath}}”> Angular <img [src]=”imagePath”>
You can try doing <p> <a href=”https://stackoverflow.com/questions/15458650/MY WEBSITE LINK” target=”_blank”> <img src=”https://stackoverflow.com/questions/15458650/IMAGE LINK” style=”width:100%;” border=”0″ alt=”Null”> </a> </p> This should scale your image if in a fluid layout. For responsive (meaning your layout reacts to the size of the window) you can add a class to the image and use @media queries in CSS to … Read more
Bitmap icon = mBitmap; Intent share = new Intent(Intent.ACTION_SEND); share.setType(“image/jpeg”); ByteArrayOutputStream bytes = new ByteArrayOutputStream(); icon.compress(Bitmap.CompressFormat.JPEG, 100, bytes); File f = new File(Environment.getExternalStorageDirectory() + File.separator + “temporary_file.jpg”); try { f.createNewFile(); FileOutputStream fo = new FileOutputStream(f); fo.write(bytes.toByteArray()); } catch (IOException e) { e.printStackTrace(); } share.putExtra(Intent.EXTRA_STREAM, Uri.parse(“file:///sdcard/temporary_file.jpg”)); startActivity(Intent.createChooser(share, “Share Image”));
Unfortunately, I cannot find a link to the original survey, but as Hollywood cinematographers moved from film to digital images, this question came up a lot, so someone (maybe SMPTE, maybe the ASC) gathered a bunch of professional cinematographers and showed them footage that had been rescaled using a bunch of different algorithms. The results … Read more