代码之家 › 专栏 › 技术社区 › J A S K I E R

如何用cmsamplebuffergetimagebuffer在swift中正确获取imagebuffer?

cmsamplebuffer ios12 ios

J A S K I E R · 技术社区 · 6 年前

“cmsampleBufferGetImageBuffer”已被属性替换 'cmsamplebuffer.imagebuffer',

cmsamplebufferget.imagebuffer不起作用:)关于swift 4.2,似乎参数也在更改。

guard let pixelbuffer:cvPixelbuffer=cmsampleBufferGetImageBuffer(sampleBuffer)else return
整个函数。以防万一…

func captureoutput(u output:avcaptureoutput,didOutput samplebuffer:cmsamplebuffer,from connection:avcaptureconnection){
//print(“相机能够捕获帧:”,date())

guard let pixelbuffer:cvpixelbuffer=cmsampleBufferGetImageBuffer(sampleBuffer)else返回
guard let model=尝试?vncoremlmmodel(用于:ars().model)else返回
中的let request=vncoremlrequest(model:model)(finishedreq,err)

guard let results=finishedReq.results as?让结果完成?[VNSClassificationObservation]其他返回
guard let firstobservation=results.first else返回

打印(firstobservation.identifier、firstobservation.confidence)

DispatchQueue.main.asyncqueue(调度队列.main.asyncqueue){
self.identifierlabel.text=“\(firstobservation.identifier)\(firstobservation.confidence*100)”
}

}

尝试?vImageRequestHandler(cvPixelBuffer:PixelBuffer,选项:[:])。执行([请求])
}
有没有人试图解决这个问题,或者有人参考了新的语法?


“cmsampleBufferGetImageBuffer”已被属性替换
'cmsamplebuffer.imagebuffer'


cmsamplebufferget.imagebuffer不起作用:)关于swift 4.2,参数似乎也在改变。

guard let pixelBuffer: CVPixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) else { return }


整个函数。以防万一…

    func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
//        print("Camera was able to capture a frame:", Date())

        guard let pixelBuffer: CVPixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) else { return }
        guard let model = try? VNCoreMLModel(for: ARS().model) else { return }
        let request = VNCoreMLRequest(model: model) { (finishedReq, err) in

            guard let results = finishedReq.results as? [VNClassificationObservation] else { return }
            guard let firstObservation = results.first else { return }

            print(firstObservation.identifier, firstObservation.confidence)

            DispatchQueue.main.async {
                self.identifierLabel.text = "\(firstObservation.identifier) \(firstObservation.confidence * 100)"
            }

        }

        try? VNImageRequestHandler(cvPixelBuffer: pixelBuffer, options: [:]).perform([request])
    }


有没有人试图解决这个问题,或者有人参考了新的语法?

1 回复 | 直到 6 年前

MichaÅ Turczyn 6 年前

func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {

    connection.videoOrientation = AVCaptureVideoOrientation.portrait
    let imageBuffer: CVPixelBuffer = sampleBuffer.imageBuffer!
    let ciimage : CIImage = CIImage(cvPixelBuffer: imageBuffer)
    let image : UIImage = self.convert(cmage: ciimage)

}


// Convert CIImage to CGImage
func convert(cmage:CIImage) -> UIImage {
    let context:CIContext = CIContext.init(options: nil)
    let cgImage:CGImage = context.createCGImage(cmage, from: cmage.extent)!
    let image:UIImage = UIImage.init(cgImage: cgImage)
    return image
}