我正在尝试测试一个非常简单的程序来使用相机捕获视频,但窗口似乎总是黑色的。摄像头灯亮,程序编译正常。#include"opencv2/highgui/highgui.hpp"#include"opencv2/imgproc/imgproc.hpp"#includeusingnamespacecv;usingnamespacestd;intmain(){VideoCapturestream1(0);//0istheidofvideodevice.0ifyouhaveonlyonecamera.if(!stream1.isOpened()){//checkifvideodevicehasb
我正在使用GPUImage库函数来操作CVPixelbuffer的高度和宽度。我正在录制纵向视频,当用户旋转设备时,我的屏幕会自动调整为横向模式。我希望横向框架适合屏幕。例如:-我以320x568的纵向模式开始播放视频,当我将设备转为横向模式时,我的帧为568x320,我希望它适合320x568。为了调整这个东西,我想操纵CVPixelBuffer。但这占用了大量内存,最后我的应用程序崩溃了。-(CVPixelBufferRef)GPUImageCreateResizedSampleBufferWithBuffer:(CVPixelBufferRef)cameraFramewithBu
前段时间我已经问过这个问题,我也得到了很好的答案:I'vebeensearchingthisforumupanddownbutIcouldn'tfindwhatIreallyneed.Iwanttogetrawimagedatafromthecamera.UptillnowItriedtogetthedataoutoftheimageDataSampleBufferfromthatmethodcaptureStillImageAsynchronouslyFromConnection:completionHandler:andtowriteittoanNSDataobject,butth
前段时间我已经问过这个问题,我也得到了很好的答案:I'vebeensearchingthisforumupanddownbutIcouldn'tfindwhatIreallyneed.Iwanttogetrawimagedatafromthecamera.UptillnowItriedtogetthedataoutoftheimageDataSampleBufferfromthatmethodcaptureStillImageAsynchronouslyFromConnection:completionHandler:andtowriteittoanNSDataobject,butth