Remove all horizontal and vertical lines from an image

Question

I want to remove all horizontal and vertical lines but some small vertical lines are not getting removed. Adding the input and output images and the code below.

Answer 1

You can do this with ImageMagick library easily, just use some predefined filter

I am not sure this works with tiff format , you may need convert your tiff file to bmp/png/jpb first

This removes horizontal lines

 convert rtaImage.png -morphology close:1 "1x5: 0,1,1,1,0"

this removes both

 convert rtaImage.png -convolve "0,$v,0,0,$v,0,0,$v,0" -threshold 99% rtaImage2.png