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February 25 2011
Interfuser: Android, Reflections with Bitmaps
Lots of applications use the effect of creating a reflection of the original image, one of those being the coverflow view on the iphone. It's a nice bit of presentation polish to add to your UI, when you know how is not difficult to implement.Xfermodes.java | Android Developers
private static final Xfermode[] sModes = {CLEAR, SRC, DST, SRC_OVER, DST_OVER, SRC_IN, DST_IN, SRC_OUT, DST_OUT, SRC_ATOP, DST_ATOP, XOR, DARKEN, LIGHTEN, MULTIPLY, SCREEN};CGContext Reference
CGBlendModeCompositing operations for images.enum CGBlendMode { kCGBlendModeNormal, kCGBlendModeMultiply, kCGBlendModeScreen, kCGBlendModeOverlay, kCGBlendModeDarken, kCGBlendModeLighten, kCGBlendModeColorDodge, kCGBlendModeColorBurn, kCGBlendModeSoftLight, kCGBlendModeHardLight, kCGBlendModeDifference, kCGBlendModeExclusion, kCGBlendModeHue, kCGBlendModeSaturation, kCGBlendModeColor, kCGBlendModeLuminosity, kCGBlendModeClear, kCGBlendModeCopy, kCGBlendModeSourceIn, kCGBlendModeSourceOut, kCGBlendModeSourceAtop, kCGBlendModeDestinationOver, kCGBlendModeDestinationIn, kCGBlendModeDestinationOut, kCGBlendModeDestinationAtop, kCGBlendModeXOR, kCGBlendModePlusDarker, kCGBlendModePlusLighter};typedef enum CGBlendMode CGBlendMode;
Blend Modes « ADM Blog
I tried to work with them in a accurate way to emulate complexer algorithms like animated water waves. Generically you can save a lot of performance, if you need to calculate every single pixel colorvalue from two bitmaps. In most cases, there is a simple solution using ColorTransform and Blendmodes. One problem is that the flash results are different in some cases, so here are my findings:Pegtop delphi
How do Adobe Photoshop, Micrografx PicturePublisher and Pegtop XFader blend layers?This article tries to give a survey of the most important blend modes, their advantages and disadvantages, and how they are coded.August 27 2009
Lanczos resampling
Lanczos resampling ("Lanzosh") is a multivariate interpolation method used to compute new values for any digitally sampled data. It is often used for image scaling (to resize digital images), but could be used for any other digital signal. In the case of digital image resizing, the Lanczos function indicates which pixels in the original image, and in what proportion, make up each pixel of the final image. The filter is named after Cornelius Lanczos, because he showed how to use Fourier series and Chebyshev polynomials for various problems where it was not used before.June 26 2009
Planetside Software - the makers of Terragen, the scenery generator.
Terragen has been used to create visual effects for many films including The Golden Compass and The Wicker Man, dozens of games and countless TV commercials, but some of the most inspiring creations come from people who use it for fun. You can download free non-commercial editions of Terragen Classic or Terragen 2 for personal use, with only a few limitations. Affordable licences are available for Terragen Classic and Terragen 2.December 05 2008
The Incredible Convenience of Mathematica Image Processing
It’s been possible since Version 6 of Mathematica to embed images directly into lines of code, allowing such stupid code tricks as expanding a polynomial of plots... Mathematica 7 adds a suite of image processing functions from trivial to highly sophisticated. To apply them to images, you don’t need to use any form of import command or file name references. Just type the command you want to use, then drag and drop the image from your desktop or browser right into the input line.November 19 2008
Opacity
Opacity is a brand new $90 program for drawing graphics for the screen. It's great for making resolution independent images and icons for applications and the web.
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