Java：在Android中平均采用16个图像字节数组

my android app is taking several images in a row. Every time I take a picture using takePicture() I convert the byte array into a PNG using BitmapFactory. My final goal is to get the average of 16 images. To speed up the process I was thinking of averaging the byte arrays before creating a PNG instead of creating 16 images and then trying to average them. Any suggestions on how to do this?my android app is taking several images in a ro