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HxAsin

Synopsis

HxImageRep HxAsin (HxImageRep img)

Input

HxImageRep img

The image you want to take the arcsine of.

Return value

HxImageRep

The arcsine of the input image.

Description

This function takes the arcsine (or inverse sine) of every pixel value of the input image. For vector images, the arcsine of every element of the vector is taken.

Remarks

Valid input images

The pixel values of the input image should be larger or equal to -1 and smaller or equal to 1.

Examples

Taking the arcsine of an image.

#include "HxImageRepGlobalFuncs.h"
#include "HxImageRep.h"

HxImageRep HxAsinExample1(HxImageRep img) {
   img = HxImageAsDouble(img);
   img = HxContrastStretch(img, 2.0);
   img = HxAddVal(img, -1.0);
   img = HxAsin(img);
   img = HxContrastStretch(img, 255.0);
   img = HxImageAsByte(img);
   return img;
}

int main(int argc, char* argv[])
{
    HxImageRep im1 = HxMakeFromFile(argv[1]);
    im1 = HxAsinExample1(im1);
    HxWriteFile(im1, argv[2]);

    return 0;
}

Input image for the HxAsin example.

Output image of the HxAsin example.

This example illustrates the result of taking the arcsine of an image.

See also

HxSin, HxTan, HxAcos, HxSinh,

Keywords

Unary, Trigonometric,

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