Get device image scale (e.g. @1x, @2x and @3x)
Use [UIScreen mainScreen].scale; this will give you the exact scale as per device. In Swift 3 UIScreen.main.scale Cheers.
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How to stop adblock plus blocking images in HTML page
I’m assuming that you’re not talking about Adsense here but images hosted on your server and hard coded into your page. If so they’re probably being blocked because of the file name and/or path. Adblock will block images with common ad dimensions in the file name, e.g. ‘myimage_720_90.png’ or ‘myimage_300x250.jpg’. with common ad keywords in … Read more
How to save a base64 image to user’s disk using JavaScript?
HTML5 download attribute Just to allow user to download the image or other file you may use the HTML5 download attribute. Static file download <a href=”/images/image-name.jpg” download> <!– OR –> <a href=”/images/image-name.jpg” download=”new-image-name.jpg”> Dynamic file download In cases requesting image dynamically it is possible to emulate such download. If your image is already loaded and … Read more
How to insert a picture into Excel at a specified cell position with VBA
Try this: With xlApp.ActiveSheet.Pictures.Insert(PicPath) With .ShapeRange .LockAspectRatio = msoTrue .Width = 75 .Height = 100 End With .Left = xlApp.ActiveSheet.Cells(i, 20).Left .Top = xlApp.ActiveSheet.Cells(i, 20).Top .Placement = 1 .PrintObject = True End With It’s better not to .select anything in Excel, it is usually never necessary and slows down your code.
Floating images in Github Readme
I know this thread’s old, but for anyone interested, you can use <img align=”left” src=”https://stackoverflow.com/questions/14421680/img.jpg”> and <img align=”right” src=”https://stackoverflow.com/questions/14421680/img.jpg”> to float images on GitHub.
How to combine multiple PNGs into one big PNG file?
Create a large image which you will write to. Work out its dimensions based on how many rows and columns you want. BufferedImage result = new BufferedImage( width, height, //work these out BufferedImage.TYPE_INT_RGB); Graphics g = result.getGraphics(); Now loop through your images and draw them: for(String image : images){ BufferedImage bi = ImageIO.read(new File(image)); g.drawImage(bi, … Read more
Including images in javadocs
A bit far fetched, but you can inline the images in the documentation by converting them into Base64. It would look like this: <img src=”data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIA…” /> There are online tools available to do the conversion: http://www.base64-image.de http://www.freeformatter.com/base64-encoder.html
How can I programmatically change the background in Mac OS X?
From python, if you have appscript installed (sudo easy_install appscript), you can simply do from appscript import app, mactypes app(‘Finder’).desktop_picture.set(mactypes.File(‘/your/filename.jpg’)) Otherwise, this applescript will change the desktop background tell application “Finder” set desktop picture to POSIX file “/your/filename.jpg” end tell You can run it from the command line using osascript, or from Python using something … Read more
Detect text region in image using Opencv
import cv2 def captch_ex(file_name): img = cv2.imread(file_name) img_final = cv2.imread(file_name) img2gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) ret, mask = cv2.threshold(img2gray, 180, 255, cv2.THRESH_BINARY) image_final = cv2.bitwise_and(img2gray, img2gray, mask=mask) ret, new_img = cv2.threshold(image_final, 180, 255, cv2.THRESH_BINARY) # for black text , cv.THRESH_BINARY_INV ”’ line 8 to 12 : Remove noisy portion ”’ kernel = cv2.getStructuringElement(cv2.MORPH_CROSS, (3, 3)) # … Read more
How do you get the RGB values from a Bitmap on Android?
This may be slightly late, but to clear up the confusion with the use of &0xff: In Java ints are 32 bits, so the (A)RGB values for each pixel are packed in 4 bytes. In other words, a pixel with the values R(123), G(93), B(49) = FF7B 5D31 in the ARGB_8888 model. Where Alpha = … Read more