In MATLAB, how do I set the bit depth property for TIFF-files using the IMWRITE function?

I would like to set the bit depth property for TIFF-files using the IMWRITE function.

Answer 1

[MathWorks Support Team]

You can set the bit depth of your image based on the type of data you are writing. IMWRITE figures out what to do based on the datatype that you pass it.

The following example can be used to store 16-bit data in TIFF-files. Please pass IMWRITE UINT16 data to set the bit depth to 16.

load trees 

I = ind2rgb(X,map); 

imshow(I) 

I2 = uint16(255 * I); 

I3 = bitshift(I2, 8); 

imwrite(I3, '16bit.tif'); 

I4 = imread('16bit.tif'); 

figure; imshow(I4) 

whos 

Name          Size                   Bytes  Class 

   I           258x350x3              2167200  double array 

   I2          258x350x3               541800  uint16 array 

   I3          258x350x3               541800  uint16 array 

   I4          258x350x3               541800  uint16 array 

   X           258x350                 722400  double array 

   caption       1x66                     132  char array 

   map         128x3                     3072  double array