在JavaCameraView设置的帧频 [英] set frame rate in JavaCameraView

问题描述

我想设置帧速率，使用JavaCameraView 1帧。 当我打开相机的帧频为约20帧。我的目的就是要改变这种价值 1 FPS点击按钮后。

i would like to set frame rate to 1 fps using JavaCameraView. When i turn on camera the frame rate is about 20 fps. My purpose is to change this value to 1 fps after click on the button.

有人能帮助我吗？我搜索了很多在互联网上，但我无法找到任何有趣的（该文档还的 http://docs.opencv.org/java/org/opencv/android/JavaCameraView.html ）。我使用JavaCameraView因为我跟OpenCV的工作。

Could someone help me ? I've searched a lot on the Internet, but i could not find nothing interesting ( in the documentation also http://docs.opencv.org/java/org/opencv/android/JavaCameraView.html). I'm using JavaCameraView because i am working with openCV.

推荐答案

您可以通过创建一个扩展JavaCameraView和 mCamera 的改变参数级操控相机preVIEW FPS对象：

You can manipulate camera preview fps by creating class that extends JavaCameraView and change parameters of mCamera Object:

public class CustomizableCameraView extends JavaCameraView {

    public CustomizableCameraView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public void setPreviewFPS(double min, double max){
        Camera.Parameters params = mCamera.getParameters();
        params.setPreviewFpsRange((int)(min*1000), (int)(max*1000));
        mCamera.setParameters(params);
    }
}

相似的OpenCV教程3 - 摄像机控制

similar to OpenCV Tutorial 3 - Camera Control.

但是你要检查，如果FPS范围您将设置为 mCamera.getSupported previewFpsRange（） - <一个href="http://developer.android.com/reference/android/hardware/Camera.Parameters.html#getSupported$p$pviewFpsRange%28%29"相对=nofollow>参考。以我为例[分钟：10000，最大：31000]，所以理论上最小为10fps的

But you have to check if fps range you will set is in mCamera.getSupportedPreviewFpsRange() - reference. In my case [min:10000, max:31000], so theoretically minimum is 10fps.

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