DepthData-获取每像素深度数据(CVPixelBuffer数据分析)

现在我AVDepthPhotoFilter从iPhone7Plus的立体相机中运行Rendering Depth Deta.

所以,我想访问每像素深度数据,但是,我不知道该怎么做.请指教.

如何获取DepthData和分析CVPixelBuffer数据

您需要确保您的AVCapturePhotoSettings()具有isDepthDataDeliveryEnabled = true

你必须使用函数func photoOutput(_ output:AVCapturePhotoOutput,didFinishProcessingPhoto photo:AVCapturePhoto,error:Error？)

func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {

    //## Convert Disparity to Depth ##

    let depthData = (photo.depthData as AVDepthData!).converting(toDepthDataType: kCVPixelFormatType_DepthFloat32)
    let depthDataMap = depthData.depthDataMap //AVDepthData -> CVPixelBuffer

    //## Data Analysis ##

    // Useful data
    let width = CVPixelBufferGetWidth(depthDataMap) //768 on an iPhone 7+
    let height = CVPixelBufferGetHeight(depthDataMap) //576 on an iPhone 7+
    CVPixelBufferLockBaseAddress(depthDataMap, CVPixelBufferLockFlags(rawValue: 0))

    // Convert the base address to a safe pointer of the appropriate type
    let floatBuffer = unsafeBitCast(CVPixelBufferGetBaseAddress(depthDataMap), to: UnsafeMutablePointer.self)

    // Read the data (returns value of type Float)
    // Accessible values : (width-1) * (height-1) = 767 * 575

    let distanceAtXYPoint = floatBuffer[Int(x * y)]

}

如果您想了解有关CVPixelBuffer分析的更多信息,这里有一个有用的帖子 - > 详细信息