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c++ Programming Glossary: channelsOpenCV : convert the pointer in memory to image http://stackoverflow.com/questions/10124717/opencv-convert-the-pointer-in-memory-to-image 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 cv_image..
http://stackoverflow.com/questions/1102692/how-to-do-alpha-blend-fast we eliminate branches in the loop process 4 pixels or 12 channels at once and improve cache performance by using streaming instructions...
OpenCV's Canny Edge Detection in C++ http://stackoverflow.com/questions/11987483/opencvs-canny-edge-detection-in-c cvtColor image gray_image CV_RGB2GRAY to std vector cv Mat channels cv Mat hsv cv cvtColor image hsv CV_RGB2HSV cv split hsv channels.. cv Mat hsv cv cvtColor image hsv CV_RGB2HSV cv split hsv channels gray_image channels 0 The problem seems to be that your hand.. image hsv CV_RGB2HSV cv split hsv channels gray_image channels 0 The problem seems to be that your hand in gray scale is very..
opencv multi channel element access http://stackoverflow.com/questions/1824787/opencv-multi-channel-element-access means the element is 32bit floating point value with 2 channels. So elem in above code is one acceptable representation of CV_32FC2..
Qt: Best way to implement “oscilloscope-like” realtime-plotting http://stackoverflow.com/questions/3848427/qt-best-way-to-implement-oscilloscope-like-realtime-plotting complicated in the end all data from the different channels has to make it to the screen at the same time. If the user is.. as a scope. But suppose you process the data from those channels in different threads you need extra synchronization in the thread.. gain whatsoever if a cpu has to calculate an FFT for 30 channels and clips at 100 is it really going to calculate those FFTs..
C++, Access Violation using OpenCV to get RGB value of pixel http://stackoverflow.com/questions/3851604/c-access-violation-using-opencv-to-get-rgb-value-of-pixel am I doing wrong if a simple request for the number of channels causes an access violation c image opencv share improve this..
How to get the GL library/headers? http://stackoverflow.com/questions/3933027/how-to-get-the-gl-library-headers
OpenCV compare two images and get different pixels http://stackoverflow.com/questions/4550458/opencv-compare-two-images-and-get-different-pixels it might be better to do something like make sure size and channels are correct. If unsure load the image first and then create..
How to generate the audio spectrum using fft in C++? http://stackoverflow.com/questions/4675457/how-to-generate-the-audio-spectrum-using-fft-in-c data to format required by FFT e.g. int float separate L R channels apply suitable window function e.g. Hann aka Hanning window..
How does photoshop blend two images together? http://stackoverflow.com/questions/5919663/how-does-photoshop-blend-two-images-together in image B. Each pixel is a color consisting of multiple channels. Assuming we are working with RGB pixels the channels in each.. channels. Assuming we are working with RGB pixels the channels in each pixel would be red green and blue. To blend two pixels.. and blue. To blend two pixels we blend their respective channels. The blend operation that occurs for each blend mode in Photoshop..
Converting YUV into BGR or RGB in OpenCV http://stackoverflow.com/questions/7954416/converting-yuv-into-bgr-or-rgb-in-opencv confuses me a little bit as it looks like it stores 4 channels but is only 3 I have included an image from the capture card..
Audio output with video processing with opencv http://stackoverflow.com/questions/8187745/audio-output-with-video-processing-with-opencv sample_rate wanted_spec.format AUDIO_S16SYS wanted_spec.channels aCodecCtx channels wanted_spec.silence 0 wanted_spec.samples.. AUDIO_S16SYS wanted_spec.channels aCodecCtx channels wanted_spec.silence 0 wanted_spec.samples SDL_AUDIO_BUFFER_SIZE..
How to display a cv::Mat in a Windows Form application? http://stackoverflow.com/questions/9580397/how-to-display-a-cvmat-in-a-windows-form-application in BGR format. So you may need to swap the red and blue channels to get the data to look right. Hopefully that will get you started..
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