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c++ Programming Glossary: channelOpenCV : convert the pointer in memory to image http://stackoverflow.com/questions/10124717/opencv-convert-the-pointer-in-memory-to-image important instructions cvCreateImageHeader and cvSetData 1 channel for mono camera and for RGB would be 3 int channels 1 IplImage.. 1 channel for mono camera and for RGB would be 3 int channels 1 IplImage cv_image cvCreateImageHeader cvSize width height.. cvCreateImageHeader cvSize width height IPL_DEPTH_8U channels if cv_image print error failed to allocate image cvSetData..
Setting ROI with mouse from a rectangle on a video http://stackoverflow.com/questions/10881397/setting-roi-with-mouse-from-a-rectangle-on-a-video 2 cvSetImageROI vid_frame box Allocate space for a single channel ROI to store grayscale frames IplImage gray_roi cvCreateImage..
Libpng, Palette png with alpha or not? http://stackoverflow.com/questions/13569887/libpng-palette-png-with-alpha-or-not But i can't find how to know if this png image has alpha channel or not. c png libpng share improve this question PNG supports.. ways Truecolor or grayscale images with a separated alpha channel RGBA or GA Transparency extra info in the optional tRNS chunk..
opencv multi channel element access http://stackoverflow.com/questions/1824787/opencv-multi-channel-element-access multi channel element access I'm trying to learn how to use openCV's new.. new c interface. How do I access elements of a multi channel matrix. for example Mat myMat size 3 3 CV_32FC2 for int i 0.. the element Mat or CvMat has 3 dimensions row col channel. We can access one element or pixel in the matrix by specifying..
C++ - passing references to boost::shared_ptr http://stackoverflow.com/questions/327573/c-passing-references-to-boostshared-ptr we're about to send a typically large message over some channel so the performance enhancement will be so small as to be unmeasureable..
Convert bitmap to PNG in-memory in C++ (win32) http://stackoverflow.com/questions/366768/convert-bitmap-to-png-in-memory-in-c-win32 want to be able to define a transparent color not alpha channel for this image. The GdiPlus solution seems to be limited to..
GetDIBits and loop through pixels using X, Y http://stackoverflow.com/questions/3688409/getdibits-and-loop-through-pixels-using-x-y although it always contains an possibly unused alpha channel MyBMInfo.bmiHeader.biBitCount 32 MyBMInfo.bmiHeader.biCompression..
http://stackoverflow.com/questions/3907028/opencv-process-every-frame grayscale conversion ugly but shows how to access each channel of the pixels individually gray_frame cvCreateImage cvSize frame..
Creating a transparent window in C++ Win32 http://stackoverflow.com/questions/3970066/creating-a-transparent-window-in-c-win32 hdcMem hbmpSplash use the source image's alpha channel for blending BLENDFUNCTION blend 0 blend.BlendOp AC_SRC_OVER..
Cast pointer to member function to normal pointer http://stackoverflow.com/questions/4210710/cast-pointer-to-member-function-to-normal-pointer to pass the pointer to the object you will need a side channel. In this case it could be static variable. Or if you want MT..
Qt, MSVC, and /Zc:wchar_t- == I want to blow up the world http://stackoverflow.com/questions/4521252/qt-msvc-and-zcwchar-t-i-want-to-blow-up-the-world
How to get a list of video capture devices (web cameras) on Mac OS? (C++) http://stackoverflow.com/questions/4532263/how-to-get-a-list-of-video-capture-devices-web-cameras-on-mac-os-c The proper way to parse it is like this first get a video channel from the sequence grabber ComponentDescription theDesc Component..
OpenCV compare two images and get different pixels http://stackoverflow.com/questions/4550458/opencv-compare-two-images-and-get-different-pixels not even pixels at all. You are counting how often a color channel of one pixel in the first image matches the channel of the corresponding.. color channel of one pixel in the first image matches the channel of the corresponding pixel in the other image. You probably.. x 2 count ... This will however not account for the alpha channel if present and will fail on grayscale images as you might read..
OpenCV get pixel information from Mat image http://stackoverflow.com/questions/7899108/opencv-get-pixel-information-from-mat-image seems to want me to use an array. Thus how do I get the channel value for a particular pixel for foo if foo is something like.. go about this uint8_t pixelPtr uint8_t foo.data int cn foo.channels for int i 0 i foo.rows i for int j 0 j foo.cols j cn Scalar_..
Fastest way to extract individual pixel data? http://stackoverflow.com/questions/8963617/fastest-way-to-extract-individual-pixel-data integer value representing the scalar value of the first channel brightness of the image c image processing opencv computer..
Apache crashes with error R6016 not enough space for thread data http://stackoverflow.com/questions/13916171/apache-crashes-with-error-r6016-not-enough-space-for-thread-data 17T14 03 36.000000000Z EventRecordID 333483 EventRecordID Channel Application Channel Computer MY PC Computer Security System.. EventRecordID 333483 EventRecordID Channel Application Channel Computer MY PC Computer Security System EventData Data apache.exe.. 17T14 03 45.000000000Z EventRecordID 333484 EventRecordID Channel Application Channel Computer MY PC Computer Security System..
Using Poco::Logger for entire project http://stackoverflow.com/questions/14114014/using-pocologger-for-entire-project Poco Logger for entire project AutoPtr SplitterChannel splitterChannel new SplitterChannel AutoPtr Channel consoleChannel.. Logger for entire project AutoPtr SplitterChannel splitterChannel new SplitterChannel AutoPtr Channel consoleChannel new ConsoleChannel.. AutoPtr SplitterChannel splitterChannel new SplitterChannel AutoPtr Channel consoleChannel new ConsoleChannel AutoPtr Channel..
http://stackoverflow.com/questions/17139974/convert-raw-pcm-to-flac chunkSize short format assuming short is 16 bits short numChannels int sampleRate int byteRate short align short bitsPerSample.. PCM other value indicates compression wave.formatHeader.numChannels 2 Stereo wave.formatHeader.sampleRate sampleRate wave.formatHeader.byteRate.. convert it. You already have all the related information Channel Bitrate etc so it should not be much of a problem to remove..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers Update and solution After raising this problem again on Channel 9 I got a fantastic answer from Sven Groot which combined with..
Qt tutorials for beginners [closed] http://stackoverflow.com/questions/5734253/qt-tutorials-for-beginners a look at the Qt programming videos on VoidRealms' Youtube Channel http www.youtube.com user VoidRealms share improve this answer..
How does photoshop blend two images together? http://stackoverflow.com/questions/5919663/how-does-photoshop-blend-two-images-together Photoshop can be summed up in the following macros #define ChannelBlend_Normal A B uint8 A #define ChannelBlend_Lighten A B uint8.. macros #define ChannelBlend_Normal A B uint8 A #define ChannelBlend_Lighten A B uint8 B A B A #define ChannelBlend_Darken A.. A #define ChannelBlend_Lighten A B uint8 B A B A #define ChannelBlend_Darken A B uint8 B A A B #define ChannelBlend_Multiply..
C++ Unified Assignment Operator move-semantics http://stackoverflow.com/questions/7458110/c-unified-assignment-operator-move-semantics how to mark as solved with out an answer. After watching a Channel 9 video on Perfect Forwarding Move semantics in c 0x i was some..
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