Issue with downscaling the images

[sandhyalaxmiK]

Hi. The Code and its working process is good.
I am getting good results for images of size 512.
If i considered images of size 1024,first i resized them to 512 and performing the tatto removal in an image. The result is of blurry if i resize them to the size 1024. What is the best way to get good quality of the image for higher resultion..

Thanks in advance.
SandhyaLaxmi