localThreshold

Computes a binary image with pixel values 0 and 1 depending on if a pixel value x in image X was above of equal to the pixel value m in mask image M.

f(x) = (1 if (x >=  m)); (0 otherwise)

Categories: Filter, Binary

Availability: Available in Fiji by activating the update sites clij and clij2. This function is part of clij2_-2.5.0.1.jar.

Usage in ImageJ macro

Ext.CLIJ2_localThreshold(Image source, Image localThreshold, Image destination);

Usage in object oriented programming languages

Java

// init CLIJ and GPU
import net.haesleinhuepf.clij2.CLIJ2;
import net.haesleinhuepf.clij.clearcl.ClearCLBuffer;
CLIJ2 clij2 = CLIJ2.getInstance();

// get input parameters
ClearCLBuffer source = clij2.push(sourceImagePlus);
ClearCLBuffer localThreshold = clij2.push(localThresholdImagePlus);
destination = clij2.create(source);

// Execute operation on GPU
clij2.localThreshold(source, localThreshold, destination);

// show result
destinationImagePlus = clij2.pull(destination);
destinationImagePlus.show();

// cleanup memory on GPU
clij2.release(source);
clij2.release(localThreshold);
clij2.release(destination);

Matlab

% init CLIJ and GPU
clij2 = init_clatlab();

% get input parameters
source = clij2.pushMat(source_matrix);
localThreshold = clij2.pushMat(localThreshold_matrix);
destination = clij2.create(source);

% Execute operation on GPU
clij2.localThreshold(source, localThreshold, destination);

% show result
destination = clij2.pullMat(destination)

% cleanup memory on GPU
clij2.release(source);
clij2.release(localThreshold);
clij2.release(destination);

Icy JavaScript

// init CLIJ and GPU
importClass(net.haesleinhuepf.clicy.CLICY);
importClass(Packages.icy.main.Icy);

clij2 = CLICY.getInstance();

// get input parameters
source_sequence = getSequence();
source = clij2.pushSequence(source_sequence);
localThreshold_sequence = getSequence();
localThreshold = clij2.pushSequence(localThreshold_sequence);
destination = clij2.create(source);

// Execute operation on GPU
clij2.localThreshold(source, localThreshold, destination);

// show result
destination_sequence = clij2.pullSequence(destination)
Icy.addSequence(destination_sequence);
// cleanup memory on GPU
clij2.release(source);
clij2.release(localThreshold);
clij2.release(destination);

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