Node Express sending image files as API response
There is an api in Express. res.sendFile app.get(‘/report/:chart_id/:user_id’, function (req, res) { // res.sendFile(filepath); }); http://expressjs.com/en/api.html#res.sendFile
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How to reduce an Image file size before uploading to a server
I use this function to reduce the size of image before uploading it, it reduces the image size to nearly 200 KB and keep the quality relatively good, u may modify it to fulfill your purpose by changing the REQUIRED_SIZE and inSampleSize: public File saveBitmapToFile(File file){ try { // BitmapFactory options to downsize the image … Read more
Near-Duplicate Image Detection [closed]
There has been a lot of research on image searching and similarity measures. It’s not an easy problem. In general, a single int won’t be enough to determine if images are very similar. You’ll have a high false-positive rate. However, since there has been a lot of research done, you might take a look at … Read more
How to force two figures to stay on the same page in LaTeX?
You can put two figures inside one figure environment. For example: \begin{figure}[p] \centering \includegraphics{fig1} \caption{Caption 1} \includegraphics{fig2} \caption{Caption 2} \end{figure} Each caption will generate a separate figure number.
image moves on hover – chrome opacity issue
Another solution would be to use -webkit-backface-visibility: hidden; on the hover element that has the opacity. Backface-visibility relates to transform, so @Beskow’s has got something to do with it. Since it is a webkit specific problem you only need to specify the backface-visibility for webkit. There are other vendor prefixes. See http://css-tricks.com/almanac/properties/b/backface-visibility/ for more info.
BitmapFactory.decodeStream returning null when options are set
The problem was that once you’ve used an InputStream from a HttpUrlConnection to fetch image metadata, you can’t rewind and use the same InputStream again. Therefore you have to create a new InputStream for the actual sampling of the image. Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeStream(is, null, options); Boolean scaleByHeight = Math.abs(options.outHeight … Read more
Java converting Image to BufferedImage
From a Java Game Engine: /** * Converts a given Image into a BufferedImage * * @param img The Image to be converted * @return The converted BufferedImage */ public static BufferedImage toBufferedImage(Image img) { if (img instanceof BufferedImage) { return (BufferedImage) img; } // Create a buffered image with transparency BufferedImage bimage = new … Read more
Merging two images in C#/.NET
basically i use this in one of our apps: we want to overlay a playicon over a frame of a video: Image playbutton; try { playbutton = Image.FromFile(/*somekindofpath*/); } catch (Exception ex) { return; } Image frame; try { frame = Image.FromFile(/*somekindofpath*/); } catch (Exception ex) { return; } using (frame) { using (var bitmap … Read more
How to add image in a TextView text?
Try this .. txtview.setCompoundDrawablesWithIntrinsicBounds( R.drawable.image, 0, 0, 0); Also see this.. http://developer.android.com/reference/android/widget/TextView.html Try this in xml file <TextView android:id=”@+id/txtStatus” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_gravity=”center” android:drawableLeft=”@drawable/image” android:drawablePadding=”5dp” android:maxLines=”1″ android:text=”@string/name”/>
Python – Find dominant/most common color in an image
Here’s code making use of Pillow and Scipy’s cluster package. For simplicity I’ve hardcoded the filename as “image.jpg”. Resizing the image is for speed: if you don’t mind the wait, comment out the resize call. When run on this sample image, it usually says the dominant colour is #d8c865, which corresponds roughly to the bright … Read more