MATLAB：读取无符号16位二进制文​​件的两个字节

Question

I have a binary Band Sequential (1-band, BSQ file), which is an unsigned 16-bit (2-byte) integer.

Currently I'm reading the whole (image) through multibandread :

img=multibandread('IMAGE.bsq',[400 400 1],'uint16',0,'bsq','n');

What process in MATLAB would allow me to read both bytes individually? ie I would like to read the file into 2 new arrays in MATLAB eg byte1 (400x400x1) and byte2 (400x400x1).

Can this be achieved through fread ? I note in the 'precision' section it is possible to skip source values (eg 'N*source=>output' ), but I'm unsure of the exact process.

Answer 1

One way would be splitting your current img with bitwise operations. The LSB image would be:

img1 = bitand(img, 255);   %// 0x00FF

and the MSB image would be:

img2 = bitsra(img, 8);

Not mandatory, but maybe you'll also want to convert these into uint8 s:

img1 = uint8(img1);
img2 = uint8(img2);