python High Pass Filter for image processing -


i want use high-pass filter on image(see appendix). high-pass filter should remove gradient of line in image. goal line without gradient.

i tried different methods: 1. use gaussian filter on image , subtract result original image like:

lowpass = ndimage.gaussian_filter(image, 3) gauss_highpass = image - lowpass
  1. i saved value of y-coordinate of image in array , used high-pass filter. unfortunately dont result want....

image:

enter image description here


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