使用camera.takePicture（快门回调，jpeg回调）和setOneShotPreviewCallback捕获的图像是否有质量差异？

Question

I'm an intermediate android programmer. I've a simple application created for learning camera. My app is using camera.takePicture() method to register callbacks for JPEG callback and eventually capture the picture. But I feel that it may also be possible to capture the image using setOneShotPreviewCallback() and providing a callback.

My question is:

• Will there be any differences in image quality between the 2 approaches?
• Any additional things to be taken care of when trying to construct image using setOneShotPreviewCallback() ?

Thanks in advance.

Answer 1

takePicture() uses (potentially) the camera's full resolution. The preview gives you the image shown on screen which is more usually the screen's resolution. The picture will be higher resolution in general and higher quality. Note that you get something like JPEG-encoded data from the picture callback, but raw image buffer data in the preview callback.

Answer 2

该人正在使用表面视图通过摄像头捕获图像，其质量会很好