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app.py
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import streamlit as st
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import cv2
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import numpy as np
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import tempfile
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import os
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import pandas as pd
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from PIL import Image
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import torch
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from transformers import DetrImageProcessor, DetrForObjectDetection
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# === Hugging Face Model Configuration ===
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processor = DetrImageProcessor.from_pretrained("NaveenKumar5/Solar_panel_fault_detection")
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model = DetrForObjectDetection.from_pretrained("NaveenKumar5/Solar_panel_fault_detection")
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model.eval()
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# === Streamlit App Configuration ===
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st.set_page_config(page_title="Solar Panel Fault Detection", layout="wide")
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st.title("π Solar Panel Fault Detection (DETR - Hugging Face)")
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st.write("Upload a thermal video (MP4). Faults will be detected using your Hugging Face DETR model.")
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# === Fault Detection Function ===
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def detect_faults(frame, frame_idx, fps):
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image = Image.fromarray(cv2.cvtColor(frame, cv2.COLOR_BGR2RGB))
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inputs = processor(images=image, return_tensors="pt")
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with torch.no_grad():
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outputs = model(**inputs)
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target_sizes = torch.tensor([image.size[::-1]]) # (height, width)
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results = processor.post_process_object_detection(outputs, target_sizes=target_sizes, threshold=0.7)[0]
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faults = []
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for score, label, box in zip(results["scores"], results["labels"], results["boxes"]):
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x1, y1, x2, y2 = map(int, box.tolist())
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conf = score.item()
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label_id = label.item()
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label_name = model.config.id2label[label_id] # Use proper label from config if available
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# Draw on frame
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color = (0, 0, 255)
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cv2.rectangle(frame, (x1, y1), (x2, y2), color, 2)
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cv2.putText(frame, f"{label_name} ({conf:.2f})", (x1, y1 - 5),
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cv2.FONT_HERSHEY_SIMPLEX, 0.5, color, 2)
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faults.append({
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"Frame": frame_idx,
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"Time (s)": round(frame_idx / fps, 2),
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"Fault Type": label_name,
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"Confidence": round(conf, 2),
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"Box": f"({x1},{y1},{x2},{y2})"
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})
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return frame, faults
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# === Video Processing Function ===
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def process_video(video_path):
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cap = cv2.VideoCapture(video_path)
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fps = int(cap.get(cv2.CAP_PROP_FPS))
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total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
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width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
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height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
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output_path = tempfile.NamedTemporaryFile(delete=False, suffix=".mp4").name
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writer = cv2.VideoWriter(output_path, cv2.VideoWriter_fourcc(*"mp4v"), fps, (width, height))
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fault_log = []
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progress = st.progress(0)
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for frame_idx in range(total_frames):
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ret, frame = cap.read()
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if not ret:
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break
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# Detect every second
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if frame_idx % fps == 0:
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frame, faults = detect_faults(frame, frame_idx, fps)
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fault_log.extend(faults)
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writer.write(frame)
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progress.progress(min(frame_idx / total_frames, 1.0))
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cap.release()
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writer.release()
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return output_path, fault_log
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# === CSV Conversion ===
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def convert_df(df):
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return df.to_csv(index=False).encode('utf-8')
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# === Streamlit UI ===
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uploaded_file = st.file_uploader("π€ Upload thermal video", type=["mp4"])
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if uploaded_file:
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st.video(uploaded_file)
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temp_input_path = tempfile.NamedTemporaryFile(delete=False, suffix=".mp4").name
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with open(temp_input_path, "wb") as f:
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f.write(uploaded_file.read())
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output_path, log = process_video(temp_input_path)
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st.subheader("π§ͺ Processed Output")
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st.video(output_path)
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if log:
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df = pd.DataFrame(log)
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st.write("### π Detected Faults Table")
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st.dataframe(df)
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st.download_button("π₯ Download Fault Log CSV", convert_df(df), "fault_log.csv", "text/csv")
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else:
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st.success("β
No faults detected.")
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os.unlink(temp_input_path)
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os.unlink(output_path)
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st.markdown("---")
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st.caption("Built with Streamlit + Hugging Face DETR + OpenCV")
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