Update src/streamlit_app.py

src/streamlit_app.py

@@ -1,40 +1,120 @@
-import altair as alt
-import numpy as np
-import pandas as pd
 import streamlit as st
+from PIL import Image, ImageEnhance
+import numpy as np
+import cv2
+import os
+from tensorflow.keras.applications.mobilenet_v2 import preprocess_input
+from tensorflow.keras.preprocessing.image import img_to_array
+from tensorflow.keras.models import load_model
+import detect_mask_image
+
+# Setting custom Page Title and Icon with changed layout and sidebar state
+st.set_page_config(page_title='Face Mask Detector', page_icon='😷', layout='centered', initial_sidebar_state='expanded')
+
+
+def local_css(file_name):
+    """ Method for reading styles.css and applying necessary changes to HTML"""
+    with open(file_name) as f:
+        st.markdown(f'<style>{f.read()}</style>', unsafe_allow_html=True)
+
+
+def mask_image():
+    global RGB_img
+    # load our serialized face detector model from disk
+    print("[INFO] loading face detector model...")
+    prototxtPath = os.path.sep.join(["face_detector", "deploy.prototxt"])
+    weightsPath = os.path.sep.join(["face_detector",
+                                    "res10_300x300_ssd_iter_140000.caffemodel"])
+    net = cv2.dnn.readNet(prototxtPath, weightsPath)
+
+    # load the face mask detector model from disk
+    print("[INFO] loading face mask detector model...")
+    model = load_model("mask_detector.h5")
+
+
+    # load the input image from disk and grab the image spatial
+    # dimensions
+    image = cv2.imread("./images/out.jpg")
+    (h, w) = image.shape[:2]
+
+    # construct a blob from the image
+    blob = cv2.dnn.blobFromImage(image, 1.0, (300, 300),
+                                 (104.0, 177.0, 123.0))
+
+    # pass the blob through the network and obtain the face detections
+    print("[INFO] computing face detections...")
+    net.setInput(blob)
+    detections = net.forward()
+
+    # loop over the detections
+    for i in range(0, detections.shape[2]):
+        # extract the confidence (i.e., probability) associated with
+        # the detection
+        confidence = detections[0, 0, i, 2]
+
+        # filter out weak detections by ensuring the confidence is
+        # greater than the minimum confidence
+        if confidence > 0.5:
+            # compute the (x, y)-coordinates of the bounding box for
+            # the object
+            box = detections[0, 0, i, 3:7] * np.array([w, h, w, h])
+            (startX, startY, endX, endY) = box.astype("int")
+
+            # ensure the bounding boxes fall within the dimensions of
+            # the frame
+            (startX, startY) = (max(0, startX), max(0, startY))
+            (endX, endY) = (min(w - 1, endX), min(h - 1, endY))
+
+            # extract the face ROI, convert it from BGR to RGB channel
+            # ordering, resize it to 224x224, and preprocess it
+            face = image[startY:endY, startX:endX]
+            face = cv2.cvtColor(face, cv2.COLOR_BGR2RGB)
+            face = cv2.resize(face, (224, 224))
+            face = img_to_array(face)
+            face = preprocess_input(face)
+            face = np.expand_dims(face, axis=0)
+
+            # pass the face through the model to determine if the face
+            # has a mask or not
+            (mask, withoutMask) = model.predict(face)[0]
+
+            # determine the class label and color we'll use to draw
+            # the bounding box and text
+            label = "Mask" if mask > withoutMask else "No Mask"
+            color = (0, 255, 0) if label == "Mask" else (0, 0, 255)
+
+            # include the probability in the label
+            label = "{}: {:.2f}%".format(label, max(mask, withoutMask) * 100)
+
+            # display the label and bounding box rectangle on the output
+            # frame
+            cv2.putText(image, label, (startX, startY - 10),
+                        cv2.FONT_HERSHEY_SIMPLEX, 0.45, color, 2)
+            cv2.rectangle(image, (startX, startY), (endX, endY), color, 2)
+            RGB_img = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
+mask_image()
+
+def mask_detection():
+    local_css("css/styles.css")
+    st.markdown('<h1 align="center">😷 Face Mask Detection</h1>', unsafe_allow_html=True)
+    activities = ["Image", "Webcam"]
+    #st.set_option('deprecation.showfileUploaderEncoding', False)
+    st.sidebar.markdown("# Mask Detection on?")
+    choice = st.sidebar.selectbox("Choose among the given options:", activities)
+
+    if choice == 'Image':
+        st.markdown('<h2 align="center">Detection on Image</h2>', unsafe_allow_html=True)
+        st.markdown("### Upload your image here ⬇")
+        image_file = st.file_uploader("", type=['jpg'])  # upload image
+        if image_file is not None:
+            our_image = Image.open(image_file)  # making compatible to PIL
+            im = our_image.save('./images/out.jpg')
+            saved_image = st.image(image_file, caption='', use_column_width=True)
+            st.markdown('<h3 align="center">Image uploaded successfully!</h3>', unsafe_allow_html=True)
+            if st.button('Process'):
+                st.image(RGB_img, use_column_width=True)
 
-"""
-# Welcome to Streamlit!
-
-Edit `/streamlit_app.py` to customize this app to your heart's desire :heart:.
-If you have any questions, checkout our [documentation](https://docs.streamlit.io) and [community
-forums](https://discuss.streamlit.io).
-
-In the meantime, below is an example of what you can do with just a few lines of code:
-"""
-
-num_points = st.slider("Number of points in spiral", 1, 10000, 1100)
-num_turns = st.slider("Number of turns in spiral", 1, 300, 31)
-
-indices = np.linspace(0, 1, num_points)
-theta = 2 * np.pi * num_turns * indices
-radius = indices
-
-x = radius * np.cos(theta)
-y = radius * np.sin(theta)
-
-df = pd.DataFrame({
-    "x": x,
-    "y": y,
-    "idx": indices,
-    "rand": np.random.randn(num_points),
-})
-
-st.altair_chart(alt.Chart(df, height=700, width=700)
-    .mark_point(filled=True)
-    .encode(
-        x=alt.X("x", axis=None),
-        y=alt.Y("y", axis=None),
-        color=alt.Color("idx", legend=None, scale=alt.Scale()),
-        size=alt.Size("rand", legend=None, scale=alt.Scale(range=[1, 150])),
-    ))
+    if choice == 'Webcam':
+        st.markdown('<h2 align="center">Detection on Webcam</h2>', unsafe_allow_html=True)
+        st.markdown('<h3 align="center">This feature will be available soon!</h3>', unsafe_allow_html=True)
+mask_detection()