The variable photo is a local variable which gets garbage collected after the class is instantiated. Save a reference to the photo, for example: self.photo = tkinter.PhotoImage(…) If you do a Google search on “tkinter image doesn’t display”, the first result is this: Why do my Tkinter images not appear? (The FAQ answer is currently … Read more
JPEG: YES — use progressive scan. It makes files smaller (each pass gets its own Huffman table), and partial rendering looks quite good. GIF: NO — it’s unlikely to make the file smaller, partial rendering is poor, and it’s pointless for animGIFs. It’s best not to use GIF at all (yes, even for anims). PNG: … Read more
As you are aware, everything passed as email message has to be textualized. You must create an email with a multipart/mime message. If you’re adding a physical image, the image must be base 64 encoded and assigned a Content-ID (cid). If it’s an URL, then the <img /> tag is sufficient (the url of the … Read more
You cannot load images directly with @2x or @3x, system selects appropriate image automatically, just specify the name using UIImage: UIImage(named: “green-square-Retina”)
Another option is to use JS: <img src=”https://stackoverflow.com/questions/18813299/LibraryTransparent.png” onmouseover=”this.src=”LibraryHoverTrans.png”;” onmouseout=”this.src=”https://stackoverflow.com/questions/18813299/LibraryTransparent.png”;” />
Here is a simple approach with a 256 bit image-hash (MD5 has 128 bit) resize the picture to 16×16 pixel reduce colors to black/white (which equals true/false in this console output) read the boolean values into List<bool> – this is the hash Code: public static List<bool> GetHash(Bitmap bmpSource) { List<bool> lResult = new List<bool>(); //create … Read more
Finally got the solution while changing mask image and using of Xfermode with Bitmap Mask ImageView mImageView= (ImageView)findViewById(R.id.imageview_id); Bitmap original = BitmapFactory.decodeResource(getResources(),R.drawable.content_image); Bitmap mask = BitmapFactory.decodeResource(getResources(),R.drawable.mask); Bitmap result = Bitmap.createBitmap(mask.getWidth(), mask.getHeight(), Config.ARGB_8888); Canvas mCanvas = new Canvas(result); Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN)); mCanvas.drawBitmap(original, 0, 0, null); mCanvas.drawBitmap(mask, 0, 0, paint); paint.setXfermode(null); mImageView.setImageBitmap(result); mImageView.setScaleType(ScaleType.CENTER); … Read more
This function implements the reverse blend described by Mark Ransom, for an additional small but visible improvement: reverseBlend[img_Image, alpha_Image, bgcolor_] := With[ {c = ImageData[img], a = ImageData[alpha] + 0.0001, (* this is to minimize ComplexInfinitys and considerably improve performance *) bc = bgcolor}, ImageClip@ Image[Quiet[(c – bc (1 – a))/a, {Power::infy, Infinity::indet}] /. {ComplexInfinity … Read more
You may checkout the Image.RawFormat property. So once you load the image from the stream you could test: if (ImageFormat.Jpeg.Equals(image.RawFormat)) { // JPEG } else if (ImageFormat.Png.Equals(image.RawFormat)) { // PNG } else if (ImageFormat.Gif.Equals(image.RawFormat)) { // GIF } … etc
If you have PHP5 and the HTTP stream wrapper enabled on your server, it’s incredibly simple to copy it to a local file: copy(‘http://somedomain.com/file.jpeg’, ‘/tmp/file.jpeg’); This will take care of any pipelining etc. that’s needed. If you need to provide some HTTP parameters there is a third ‘stream context’ parameter you can provide.