uintlut (Image Processing Toolbox User's Guide)

Image Processing Toolbox User's Guide

uintlut

Compute new values of A based on lookup table LUT

Note uintlut is an obsolete version of intlut and may be removed in a future version of the toolbox.

Syntax

```
B = uintlut(A,LUT)
```

Purpose

B = uintlut(A,LUT) creates an array B containing new values of A based on the lookup table LUT. For example, if A is a vector whose kth element is equal to alpha, then B(k) is equal to the LUT value corresponding to alpha, that is, LUT(alpha+1).

Class Support

A must be uint8 or uint16. If A is uint8, then LUT must be a uint8 vector with 256 elements. If A is uint16, then LUT must be a uint16 vector with 65536 elements. B has the same size and class as A.

Example

A = uint8([1 2 3 4; 5 6 7 8;9 10 11 12]);
LUT = repmat(uint8([0 150 200 255]),1,64);
B = uintlut(A,LUT);
imshow(A), figure, imshow(B);

See Also

impixel, improfile

uint8 warp