app.py

import gradio
import cv2
import numpy as np



def inference(img):
  #my_result = cv2.erode(img,(1,1))
  #my_result = cv2.dilate(my_result,(1,1))
  # https://scikit-image.org/docs/dev/api/skimage.morphology.html#skimage.morphology.remove_small_objects  
  # my_result = cv2.remove_small_objects(binarized.astype(bool), min_size=2, connectivity=2).astype(int)
  img_bw = 255*(cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) > 5).astype('uint8')

  se1 = cv2.getStructuringElement(cv2.MORPH_RECT, (5,5))
  se2 = cv2.getStructuringElement(cv2.MORPH_RECT, (2,2))
  mask = cv2.morphologyEx(img_bw, cv2.MORPH_CLOSE, se1)
  mask = cv2.morphologyEx(mask, cv2.MORPH_OPEN, se2)

  mask = np.dstack([mask, mask, mask]) / 255
  out = img * mask

  return out

# For information on Interfaces, head to https://gradio.app/docs/
# For user guides, head to https://gradio.app/guides/
# For Spaces usage, head to https://huggingface.co/docs/hub/spaces
iface = gradio.Interface(
  fn=inference,
  inputs='image',
  outputs='image',
  title='Hello World', 
  description='The simplest interface!',
  examples=["llama.jpg"])  

iface.launch()