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absolute

Computes the absolute value of every individual pixel x in a given image.

f(x) = |x| 

Parameters

source : Image The input image to be processed. destination : Image The output image where results are written into.

Category: Math

absolute often follows after

absolute is often followed by

Usage in ImageJ macro

Ext.CLIJ2_absolute(Image source, 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);
destination = clij2.create(source);
// Execute operation on GPU
clij2.absolute(source, destination);
// show result
destinationImagePlus = clij2.pull(destination);
destinationImagePlus.show();

// cleanup memory on GPU
clij2.release(source);
clij2.release(destination);
Matlab
% init CLIJ and GPU
clij2 = init_clatlab();

% get input parameters
source = clij2.pushMat(source_matrix);
destination = clij2.create(source);
% Execute operation on GPU
clij2.absolute(source, destination);
% show result
destination = clij2.pullMat(destination)

% cleanup memory on GPU
clij2.release(source);
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);
destination = clij2.create(source);
// Execute operation on GPU
clij2.absolute(source, destination);
// show result
destination_sequence = clij2.pullSequence(destination)
Icy.addSequence(destination_sequence);
// cleanup memory on GPU
clij2.release(source);
clij2.release(destination);
clEsperanto Python (experimental)
import pyclesperanto_prototype as cle

cle.absolute(source, destination)

clEsperanto CLIc C++ (experimental)
// Initialise GPU information.
cle::GPU gpu;
cle::CLE cle(gpu);

// Initialise device memory and push from host
cle::Buffer gpuInput = cle.Push<float>(input_img);
cle::Buffer gpuOutput = cle.Create<float>(input_img);

// Call kernel
cle.Absolute(gpuInput, gpuOutput);  

// pull device memory to host
Image<float> output_img = cle.Pull<float>(gpuOutput);    

Example scripts

absolute.ijm

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