import streamlit as st
import pydicom
import cv2
import numpy as np

@st.cache_resource
def convert_dcm_to_png(input_image_path, output_image_path='a.png'):
    ds = pydicom.dcmread(input_image_path)
    img = ds.pixel_array
    img = cv2.normalize(img, None, 0, 255, cv2.NORM_MINMAX).astype(np.uint8)
    cv2.imwrite(output_image_path, img)