====== Import Zeiss lookup tables ======

**This macro imports a Zeiss lookuptable file, as found in the AIM or ZEN software, and applies it to the current image.**

<file java Apply Zeiss Lut.txt>

// This macro imports a Zeiss lookuptable file, as found in the AIM or ZEN software.
// and applies it to the current image.
// jm at ibmp dot fr

// checks if the current image can accept a lookup table.
if (bitDepth==24) exit ("RGB images cannot have lookup tables");

// selects a file and checks if it complies with the announced Zeiss Confocal Palette file format
path=File.openDialog("Select Zeiss LUT to apply");
s=File.openAsRawString(path,50000);
if (!startsWith(s,"CZ - LSM510 Color Palette , Version 1.00")) exit ("Not a Zeiss LUT definition file.");

// reads the palette's name's length, and the palette's name itself, and finds out the offset to the palette data
nameLength=read32int(41);
nameString=substring(s,45,45+nameLength);
lutOffset=46+nameLength;

// creates three 8-bit arrays and fills them with each 16th value read from the 12bit to 12bit Zeiss palette.
r=newArray(256);
g=newArray(256);
b=newArray(256);
for (i=0;i<256;i++) {
  r[i]=parseInt(read16int(lutOffset+i*16*2))*255/0xfff;
  g[i]=parseInt(read16int(lutOffset+i*16*2+4096*2))*255/0xfff;
  b[i]=parseInt(read16int(lutOffset+i*16*2+4096*2*2))*255/0xfff;
}

// applies the 8-bit palette to the current image
setLut(r,g,b);

// end of macro : displays a success message 
showStatus(nameString+" Zeiss LUT Applied");

function read32int(n) {
return charCodeAt(s,n)+charCodeAt(s,n+1)<<8+charCodeAt(s,n+2)<<16+charCodeAt(s,n+3)<<24;
}
function read16int(n) {
return charCodeAt(s,n)+charCodeAt(s,n+1)<<8;
}

</file>


** Here is a montage of all Lookuptables available in the ZEN software. **


{{:macro:montagelutzeiss.jpg|}}