Android的定制照相机质量 [英] Android Custom Camera Quality

问题描述

我用下面的参数我自定义相机

I am using the following parameters for my custom camera

mCamera = getCameraInstance();

params = mCamera.getParameters();
params.setFlashMode(Camera.Parameters.FLASH_MODE_AUTO);
params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
params.setSceneMode(Camera.Parameters.SCENE_MODE_AUTO);
params.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_AUTO);
params.setExposureCompensation(0);
params.setPictureFormat(ImageFormat.JPEG);
params.setJpegQuality(100);
params.setRotation(90);

List<Size> sizes = params.getSupportedPictureSizes();
Camera.Size size = sizes.get(0);
params.setPictureSize(size.width, size.height);

mCamera.setParameters(params);

和拍摄照片后，图像的质量也相当不错。我在使用自动对焦和闪光灯。

And after a photo is taken, the quality of the image is quite bad. I have autofocus and flash in use.

这是我拍摄照片的方法。

This is my method for taking the photo..

mCamera.autoFocus(new Camera.AutoFocusCallback() {
    ShutterCallback shutterCallback = new ShutterCallback() {

        @Override
        public void onShutter() {
            AudioManager mgr = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
            mgr.playSoundEffect(AudioManager.FLAG_PLAY_SOUND);
        }
    };

    PictureCallback pictureCallback = new PictureCallback() {

        @Override
        public void onPictureTaken(byte[] data,
                Camera camera) {
            ...
        }
    };

    public void onAutoFocus(boolean success, Camera camera) {
        mCamera.takePicture(shutterCallback,
                null, null, pictureCallback);
    }
});

时，闪光灯不会闪光（我使用自动闪光），房间我是光线充足是它特别坏..

It is especially bad when the flash doesn't fire (I'm using auto flash) and the room I'm in is well lit..

推荐答案

当您使用 getSupportedPictureSizes（），它不一定以任何顺序返回。它可能在 sizes.get返回一个可怕的尺寸（0）。如果你想要最好的质量，你应该比较他们找到的最大尺寸。是这样的：

When you use getSupportedPictureSizes(), it doesn't necessarily return them in any order. It's probably returning a horrible size in sizes.get(0). You should compare them to find the biggest size if you want the best quality. Something like:

List<Size> sizes = params.getSupportedPictureSizes();
Camera.Size size = sizes.get(0);
for(int i=0;i<sizes.size();i++)
{
    if(sizes.get(i).width > size.width)
        size = sizes.get(i);
}
params.setPictureSize(size.width, size.height);

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