如何在matlab上使用imread读取大图像？

Question

I have big a tiff file (2.19gb). When im using imread fuction matlab says "Requested 47937x51599x4 (9.2GB)..."
My question is how can i read and make my calculations on big image file like this?

Answer 1

如果它是* .tiff图像，则可以使用以下方法读取图像的一部分：

im=imread('img.tif','PixelRegion',{[1 100],[1 100]});