Dear Gen. I need your kind support in my issue, in my project i have to use a symmetrical modified Gaussian high-pass filter for image enhancement as in below snap shoot,
the image in top is the gray input image and the image down is the filtered image by Gaussian high-pass filter the purpose of using the filter is to enhance the vein of finger image.
the symmetrical modified Gaussian high-pass filter used for enhancement used the below formula:
where : distance=sqrt((x-p)^2+(y-q)^2) , a=12.5 , b=-4 and d=12.
but when i coding the above formula and test it with a gray input finger vein image, there is no any change between the input and output image. my code as below:
the input gray finger vein image is in attach any kind support for my issue? kind regards