deepdespeckling / app.py
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import streamlit as st
from PIL import Image
from io import BytesIO, TextIOWrapper
import numpy as np
from deepdespeckling.despeckling import get_denoiser, get_model_weights_path
from deepdespeckling.utils.load_cosar import cos2mat
from deepdespeckling.utils.constants import PATCH_SIZE, STRIDE_SIZE
st.set_page_config(layout="wide", page_title="Deepdespeckling")
st.write("## Despeckle your SAR images")
st.write(
"Try to upload a light image "
)
st.sidebar.write("## Upload and download :gear:")
def convert_image(img):
buf = BytesIO()
img.save(buf, format="PNG")
byte_im = buf.getvalue()
return byte_im
def preprocess_for_png(image, threshold):
noisy_image = np.clip(image, 0, threshold)
noisy_image = noisy_image / threshold * 255
noisy_image = Image.fromarray(image.astype('float64')).convert('L')
return noisy_image
def preprocess_noisy_image(upload_path, denoiser):
image = cos2mat(upload_path)
noisy_image = np.array(image).reshape(
1, np.size(image, 0), np.size(image, 1), 2)
noisy_image, _, _ = denoiser.preprocess_noisy_image(noisy_image)
threshold = np.mean(noisy_image) + 3 * np.std(noisy_image)
noisy_image = preprocess_for_png(noisy_image, threshold=threshold)
return image, noisy_image, threshold
def fix_image(upload_path):
model_name = "spotlight"
denoiser = get_denoiser(model_name=model_name)
image, noisy_image, threshold = preprocess_noisy_image(
upload_path=upload_path, denoiser=denoiser)
col1.write("Original Image :camera:")
col1.image(noisy_image)
model_weights_path = get_model_weights_path(model_name=model_name)
despeckled_image = denoiser.denoise_image(
image, model_weights_path, PATCH_SIZE, STRIDE_SIZE)["denoised"]["full"]
despeckled_image = preprocess_for_png(
despeckled_image, threshold=threshold)
col2.write("Despeckled Image")
col2.image(despeckled_image)
st.sidebar.markdown("\n")
st.sidebar.download_button("Download despeckled image", convert_image(
despeckled_image), "despeckled.png", "image/png")
def init_image():
col1.write("Noisy Image ")
col1.image("img/noisy.png")
col1.write("Despeckled Image")
col1.image("img/denoised.png")
col1, col2 = st.columns(2)
my_upload = st.sidebar.file_uploader("Upload an image", type=["cos"])
if my_upload is not None:
b = my_upload.getvalue()
with open("test.cos", "wb") as f:
f.write(b)
fix_image("test.cos")
else:
init_image()