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Trying to twist up an adaptive gaussian blur



Agonies abound folks


The original MATLAB code   has a gaussian blur whose value changes based on pixel,  so I thought I could this  by using a core image kernel to figure out the calculations,  then feed the exponent of the E term to the radius input of the gaussian blur.

No such luck.

I can do the required calculations.  I use image only to determine what value the euclidean distance map function will return.   the division, rounding and multiplying all are more or less ok.

I cannot output the exp term.  Kernels only output images.

so  I turned my sorry fate over to a _javascript_ block    but wait!!  How will I get an image into _javascript_ so I can get the coordinates of the day ( as samplercoords does in kernels )?

Thats my question.  Is there any way either inside a _javascript_ block to determine the coords of the current pixel  or outside a java block by having a patch send me the current coords?

any help is appreciated.

--dan
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