2014/10/15 下午 10:08:42

iphone Programming Glossary: extraction

http://stackoverflow.com/questions/10583062/opencv-ios-real-time-template-matching

Augmented Reality combined with template matching and 3D rendering. A rough outline Use some sort of stable feature extraction to obtain features from the input video stream. eg. see FAST in OpenCV . Combine these features and back project to estimate..

An iPhone library for shape recognition via the camera

http://stackoverflow.com/questions/2093143/an-iphone-library-for-shape-recognition-via-the-camera

advise you might have iphone computer vision share improve this question Have a look at at OpenCV's SURF feature extraction they also have a demo which uses it to detect objects . Surf features are salient image features which are invariant to..

Hide status bar while playing video for iphone

http://stackoverflow.com/questions/3201255/hide-status-bar-while-playing-video-for-iphone

NSDecimalNumber to unsignedLongLong - wrong value

http://stackoverflow.com/questions/3298589/nsdecimalnumber-to-unsignedlonglong-wrong-value

parsing HTML on the iPhone [closed]

http://stackoverflow.com/questions/405749/parsing-html-on-the-iphone

Does such a library exist or am I better off just trying to use regular expressions iphone html parsing html content extraction share improve this question I found using hpple quite useful to parse messy HTML. Hpple project is a Objective C wrapper..

kCVPixelFormatType_420YpCbCr8BiPlanarFullRange frame to UIImage conversion

http://stackoverflow.com/questions/8838481/kcvpixelformattype-420ypcbcr8biplanarfullrange-frame-to-uiimage-conversion

136 8 rgbOutput 2 298 y 16 516 cb 277 8 Just written directly into this box and untested I think I've got the cb cr extraction correct. You'd then use CGBitmapContextCreate with rgbBuffer to create a CGImage and hence a UIImage . share improve this..

Faster alternative to glReadPixels in iPhone OpenGL ES 2.0

http://stackoverflow.com/questions/9550297/faster-alternative-to-glreadpixels-in-iphone-opengl-es-2-0

the movie. Aside from the use of this in an AVAssetWriter I have some code in this answer that I've used for raw pixel extraction. It also experiences a significant speedup in practice when compared to using glReadPixels although less than I see with..