avcapturedevice

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Why rotate Image in OpenCV without rotation code?

I am taking photo using AVCaptureStillImageOutput, AVCaptureSession, AVCaptureVideoPreviewLayer and display it in UIImageView. Its work properly.[详细]

2023-03-12 05:07 分类：问答
AVCaptureSession output sample buffer save to CoreData

I am using an AVCaptureSession to capture frames from the camera using the setSampleBufferDelegate method from the AVCaptureVideoDataOutput class. The delegate method looks like the following. You can[详细]

2023-02-25 20:35 分类：问答
iPhone 4 AVFoundation : Capture from front and rear cameras simultaneously

I was wondering if it was possible to capture from both cameras simultaneously using AVFoundation framework. Specifically, my question is whether both front and rear AVCaptureDevices can be active at[详细]

2023-02-06 17:28 分类：问答
AVCaptureDevice focusPointOfInterest doesn't change

I have an IBAction with this code: .h file: AVCaptureDevice *device; .m file: - (IBAction)focusInfo { if (device == nil) {[详细]

2023-01-31 11:23 分类：问答
Why AVCaptureSession output a wrong orientation?

So, I followed Apple\'s instructions to capture video session using AVCaptureSession: http://developer.apple.com/iphone/library/qa/qa2010/qa1702.html. One problem I\'m facing is that even though the o[详细]

2023-01-12 19:08 分类：问答
How to calculate focusPointOfInterest for AVCaptureDevice?

How do you calculate the focusPointOfInterest (a CGPoint value between 0,0 and 1,1) for an given AVCaptureDevice?[详细]

2023-01-12 06:59 分类：问答
AVCaptureSession cancels background audio

Whenever I start an AVCaptureSession running with the microphone as an input it cancels whatever background music is currently running (iPod music for instance).If I comment out the line adding the au[详细]

2023-01-12 04:42 分类：问答
革命军的作者是谁啊？？

buou987 开发者_如何学运维 2022-05-09 22:41 邹容MC透明 2022-05-09 22:45 开发者_JS百科邹容（1885年—1905年），中国近代著名资产阶级革命宣传家，原名桂文，又名威丹、蔚丹、绍陶，留学日本时改名邹容[详细]

2022-12-21 17:35 分类：问答