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Update app.py
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app.py
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# # -------------------------------
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# # Load BLIP-base model (lighter version)
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# # -------------------------------
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# processor = BlipProcessor.from_pretrained("Salesforce/blip-image-captioning-large")
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# model = BlipForConditionalGeneration.from_pretrained("Salesforce/blip-image-captioning-large")
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# # -------------------------------
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# # Generate caption function
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# # -------------------------------
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# # def generate_caption_tts(image):
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# # caption = generate_caption(model, processor, image)
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# # audio_file = text_to_audio_file(caption)
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# # return caption, audio_file # return file path, not BytesIO
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#
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#
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#
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# import tempfile
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# import pyttsx3
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# def text_to_audio_file(text):
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# # Create a temporary file
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# tmp_file = tempfile.NamedTemporaryFile(suffix=".mp3", delete=False)
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# tmp_path = tmp_file.name
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# tmp_file.close()
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# engine = pyttsx3.init()
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# engine.save_to_file(text, tmp_path)
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# engine.runAndWait()
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# return tmp_path
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# def generate_caption_from_image(model, processor, image):
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# # image: PIL.Image
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# inputs = processor(images=image, return_tensors="pt")
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# out = model.generate(**inputs)
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# caption = processor.decode(out[0], skip_special_tokens=True)
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# return caption
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# # -------------------------------
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# # Gradio interface: Caption + Audio
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# # -------------------------------
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# def generate_caption_tts(image):
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# caption =
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#
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# return caption
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import gradio as gr
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from transformers import (
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BlipProcessor,
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BlipForConditionalGeneration,
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BlipForQuestionAnswering,
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pipeline,
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SpeechT5Processor, # <--- NEW
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SpeechT5ForTextToSpeech, # <--- NEW
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set_seed # <--- NEW
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)
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from datasets import load_dataset # <--- NEW for speaker embedding
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from PIL import Image
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import torch
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# from gtts import gTTS # <--- REMOVED
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import tempfile
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import numpy as np
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import soundfile as sf
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import librosa
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import tempfile
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import time # <--- Added for potential cleanup, but mostly for future use
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# Set seed for reproducibility in TTS generation
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set_seed(42)
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def combine_audio(beep_path, speech_path):
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"""Combine beep + speech audio into one clip."""
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# ... (Keep this function as is)
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beep, sr1 = sf.read(beep_path)
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speech, sr2 = sf.read(speech_path)
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# Resample beep if needed
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if sr1 != sr2:
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beep = librosa.resample(y=beep, orig_sr=sr1, target_sr=sr2)
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sr1 = sr2
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# Convert multi-channel to mono
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if len(beep.shape) > 1:
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beep = beep.mean(axis=1)
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if len(speech.shape) > 1:
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# Check if speech is stereo (channels > 1) and has data
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if speech.ndim > 1:
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speech = speech.mean(axis=1)
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# Ensure speech is treated as a 1D array even if it was originally mono 2D
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# For single channel (mono) soundfile output, it might be 2D with shape (N, 1)
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# Concatenate beep + speech
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combined = np.concatenate((beep, speech))
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tmp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".wav")
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# SpeechT5 generates 16000Hz WAV, so we use sr1 (which is 16000) for the output
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sf.write(tmp_file.name, combined, sr1)
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return tmp_file.name
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# ----------------------
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# Device setup
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# ----------------------
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device = "cuda" if torch.cuda.is_available() else "cpu"
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# ----------------------
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# Load Models Once
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# ----------------------
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print("🔄 Loading models...")
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# Captioning
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caption_processor = BlipProcessor.from_pretrained("Salesforce/blip-image-captioning-large")
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caption_model = BlipForConditionalGeneration.from_pretrained("Salesforce/blip-image-captioning-large").to(device)
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# VQA
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vqa_processor = BlipProcessor.from_pretrained("Salesforce/blip-vqa-base")
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vqa_model = BlipForQuestionAnswering.from_pretrained("Salesforce/blip-vqa-base").to(device)
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# Translation
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translation_models = {
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"Hindi": pipeline("translation", model="Helsinki-NLP/opus-mt-en-hi"),
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"French": pipeline("translation", model="Helsinki-NLP/opus-mt-en-fr"),
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"Spanish": pipeline("translation", model="Helsinki-NLP/opus-mt-en-es"),
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}
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# Text-to-Speech (TTS) Models # <--- NEW/MODIFIED
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print(" Loading SpeechT5 TTS model...")
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tts_processor = SpeechT5Processor.from_pretrained("microsoft/speecht5_tts")
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tts_model = SpeechT5ForTextToSpeech.from_pretrained("microsoft/speecht5_tts").to(device)
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# Load a speaker embedding (required for SpeechT5 to define a voice)
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# Using a sample speaker from the VCTK dataset
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embeddings_dataset = load_dataset("Matthijs/cmu-arctic-xvectors", split="validation")
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speaker_embeddings = torch.tensor(embeddings_dataset[7306]["xvector"]).unsqueeze(0).to(device)
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# Safety Moderation Pipeline
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moderation_model = pipeline("text-classification", model="unitary/toxic-bert")
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print("✅ All models loaded!")
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# ----------------------
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# Utility: Generate Local Speech (TTS) # <--- NEW FUNCTION
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# ----------------------
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def synthesize_speech_local(text, tts_processor, tts_model, speaker_embeddings):
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"""Generates speech using local HuggingFace SpeechT5 model."""
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inputs = tts_processor(text=text, return_tensors="pt").to(device)
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# Generate speech with the loaded model and speaker embedding
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speech = tts_model.generate_speech(
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inputs["input_ids"],
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speaker_embeddings,
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do_sample=True # Use sampling for more natural tone
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)
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# Convert the Tensor to a NumPy array
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speech_np = speech.cpu().numpy()
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# Create a temporary WAV file to save the audio
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# SpeechT5's default sampling rate is 16000Hz
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tmp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".wav")
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sf.write(tmp_file.name, speech_np, samplerate=16000)
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return tmp_file.name
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# ----------------------
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# Utility: Generate a Beep Sound
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# ----------------------
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def make_beep_sound(duration=0.5, freq=1000):
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"""Generate a short beep tone and save as temporary .wav file."""
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# We use 16000Hz to match SpeechT5's output for combining audio later
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samplerate = 16000
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t = np.linspace(0, duration, int(samplerate * duration), endpoint=False)
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wave = 0.5 * np.sin(2 * np.pi * freq * t)
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tmp_beep = tempfile.NamedTemporaryFile(delete=False, suffix=".wav")
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sf.write(tmp_beep.name, wave, samplerate)
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return tmp_beep.name
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# ----------------------
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# Safety Filter Function (Keep as is)
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# ----------------------
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def is_caption_safe(caption):
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# ... (Keep this function as is)
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try:
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votes = moderation_model(caption)
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if isinstance(votes, list) and isinstance(votes[0], list):
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votes = votes[0]
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for item in votes:
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# Checking for 'V' or 'V2' (Violent, etc.) labels with high confidence
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if isinstance(item, dict) and item.get("label") in ["V", "V2"] and item.get("score", 0) > 0.5:
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return False
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except Exception as e:
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print("⚠️ Moderation failed:", e)
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unsafe_keywords = [
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"gun", "blood", "skull", "kill", "corpse", "gore", "knife", "weapon",
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"fire", "murder", "dead", "death", "suicide", "bomb", "explosion",
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"terrorist", "assault", "stab", "shoot", "pistol", "rifle", "shotgun",
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"grenade", "horror", "beheaded", "torture", "hostage", "rape",
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"war", "massacre", "chainsaw", "poison", "strangle", "hang", "drown"
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]
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if any(word in caption.lower() for word in unsafe_keywords):
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return False
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return True
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# ----------------------
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# Caption + Translate + Speak # <--- MODIFIED
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# ----------------------
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def generate_caption_translate_speak(image, target_lang):
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# Step 1: Caption
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inputs = caption_processor(images=image, return_tensors="pt").to(device)
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with torch.no_grad():
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out = caption_model.generate(**inputs, max_new_tokens=50)
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english_caption = caption_processor.decode(out[0], skip_special_tokens=True)
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# Step 1.5: Safety Check (MODIFIED TTS)
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if not is_caption_safe(english_caption):
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# Generate beep (16000Hz WAV)
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beep = make_beep_sound()
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# Generate warning speech (16000Hz WAV)
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warning_text = "Warning! Unsafe or inappropriate content detected."
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speech_tmp_name = synthesize_speech_local(warning_text, tts_processor, tts_model, speaker_embeddings)
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# Combine beep + speech
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combined_audio = combine_audio(beep, speech_tmp_name)
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# Return combined audio automatically
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return "⚠️ Warning: Unsafe or inappropriate content detected!", "", combined_audio
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# Step 2: Translate
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if target_lang in translation_models:
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translated = translation_models[target_lang](english_caption)[0]['translation_text']
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else:
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translated = "Translation not available"
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# Step 3: Generate Speech (English caption) (MODIFIED TTS)
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tmp_file_name = synthesize_speech_local(english_caption, tts_processor, tts_model, speaker_embeddings)
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# The output is a .wav file now, but Gradio's Audio component is flexible
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return english_caption, translated, tmp_file_name
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# ----------------------
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# VQA # <--- MODIFIED
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# ----------------------
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def vqa_answer(image, question):
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inputs = vqa_processor(image, question, return_tensors="pt").to(device)
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with torch.no_grad():
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out = vqa_model.generate(**inputs, max_new_tokens=50)
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answer = vqa_processor.decode(out[0], skip_special_tokens=True)
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if not is_caption_safe(answer):
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# Generate beep (16000Hz WAV)
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beep = make_beep_sound()
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# Generate warning speech (16000Hz WAV)
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warning_text = "Warning! Unsafe or inappropriate content detected."
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speech_tmp_name = synthesize_speech_local(warning_text, tts_processor, tts_model, speaker_embeddings)
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combined = combine_audio(beep, speech_tmp_name)
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-
return "⚠️ Warning: Unsafe or inappropriate content detected!", combined
|
| 648 |
-
|
| 649 |
-
return answer, None
|
| 650 |
-
|
| 651 |
-
# ----------------------
|
| 652 |
-
# Gradio UI (Keep as is)
|
| 653 |
-
# ----------------------
|
| 654 |
-
with gr.Blocks(title="BLIP Vision App") as demo:
|
| 655 |
-
gr.Markdown("## 🖼️ BLIP: Image Captioning + Translation + Speech + VQA (Auto-Play TTS + Safety Beep)")
|
| 656 |
-
gr.Markdown("### Note: Text-to-Speech now uses a local HuggingFace model to prevent 'Too Many Requests' (429) errors.")
|
| 657 |
-
|
| 658 |
-
# --- Caption + Translate + Speak ---
|
| 659 |
-
with gr.Tab("Caption + Translate + Speak"):
|
| 660 |
-
with gr.Row():
|
| 661 |
-
img_in = gr.Image(type="pil", label="Upload Image")
|
| 662 |
-
lang_in = gr.Dropdown(["Hindi", "French", "Spanish"], label="Translate To", value="Hindi")
|
| 663 |
-
eng_out = gr.Textbox(label="English Caption")
|
| 664 |
-
trans_out = gr.Textbox(label="Translated Caption")
|
| 665 |
-
# Note: We changed the output to WAV but Gradio handles it fine.
|
| 666 |
-
audio_out = gr.Audio(label="Speech Output (WAV format)", type="filepath", autoplay=True)
|
| 667 |
-
btn1 = gr.Button("Generate Caption, Translate & Speak")
|
| 668 |
-
btn1.click(generate_caption_translate_speak, inputs=[img_in, lang_in],
|
| 669 |
-
outputs=[eng_out, trans_out, audio_out])
|
| 670 |
-
|
| 671 |
-
# --- Visual Question Answering (VQA) ---
|
| 672 |
-
with gr.Tab("Visual Question Answering (VQA)"):
|
| 673 |
-
with gr.Row():
|
| 674 |
-
img_vqa = gr.Image(type="pil", label="Upload Image")
|
| 675 |
-
q_in = gr.Textbox(label="Ask a Question about the Image")
|
| 676 |
-
ans_out = gr.Textbox(label="Answer")
|
| 677 |
-
beep_out = gr.Audio(label="Alert Sound (WAV format)", type="filepath", autoplay=True)
|
| 678 |
-
btn2 = gr.Button("Ask")
|
| 679 |
-
btn2.click(vqa_answer, inputs=[img_vqa, q_in], outputs=[ans_out, beep_out])
|
| 680 |
-
|
| 681 |
-
demo.launch()
|
|
|
|
| 1 |
+
app.py
|
| 2 |
+
import gradio as gr
|
| 3 |
+
from transformers import BlipProcessor, BlipForConditionalGeneration
|
| 4 |
+
from gtts import gTTS
|
| 5 |
+
import io
|
| 6 |
+
from PIL import Image
|
|
|
|
|
|
|
|
|
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|
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|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 7 |
|
| 8 |
+
# -------------------------------
|
| 9 |
+
# Load BLIP-base model (lighter version)
|
| 10 |
+
# -------------------------------
|
| 11 |
+
processor = BlipProcessor.from_pretrained("Salesforce/blip-image-captioning-large")
|
| 12 |
+
model = BlipForConditionalGeneration.from_pretrained("Salesforce/blip-image-captioning-large")
|
| 13 |
|
| 14 |
+
# -------------------------------
|
| 15 |
+
# Generate caption function
|
| 16 |
+
# -------------------------------
|
|
|
|
|
|
|
|
|
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|
| 17 |
# def generate_caption_tts(image):
|
| 18 |
+
# caption = generate_caption(model, processor, image)
|
| 19 |
+
# audio_file = text_to_audio_file(caption)
|
| 20 |
+
# return caption, audio_file # return file path, not BytesIO
|
|
|
|
| 21 |
|
| 22 |
|
| 23 |
+
# -------------------------------
|
| 24 |
+
# Convert text to speech using gTTS
|
| 25 |
+
# -------------------------------
|
| 26 |
+
import tempfile
|
| 27 |
+
import pyttsx3
|
| 28 |
+
|
| 29 |
+
def text_to_audio_file(text):
|
| 30 |
+
# Create a temporary file
|
| 31 |
+
tmp_file = tempfile.NamedTemporaryFile(suffix=".mp3", delete=False)
|
| 32 |
+
tmp_path = tmp_file.name
|
| 33 |
+
tmp_file.close()
|
| 34 |
+
|
| 35 |
+
engine = pyttsx3.init()
|
| 36 |
+
engine.save_to_file(text, tmp_path)
|
| 37 |
+
engine.runAndWait()
|
| 38 |
+
|
| 39 |
+
return tmp_path
|
| 40 |
+
|
| 41 |
+
def generate_caption_from_image(model, processor, image):
|
| 42 |
+
# image: PIL.Image
|
| 43 |
+
inputs = processor(images=image, return_tensors="pt")
|
| 44 |
+
out = model.generate(**inputs)
|
| 45 |
+
caption = processor.decode(out[0], skip_special_tokens=True)
|
| 46 |
+
return caption
|
| 47 |
+
# -------------------------------
|
| 48 |
+
# Gradio interface: Caption + Audio
|
| 49 |
+
# -------------------------------
|
| 50 |
+
def generate_caption_tts(image):
|
| 51 |
+
caption = generate_caption_from_image(model, processor, image) # uses global model/processor
|
| 52 |
+
# audio_file = text_to_audio_file(caption)
|
| 53 |
+
return caption
|
| 54 |
+
|
| 55 |
+
|
| 56 |
+
|
| 57 |
+
interface = gr.Interface(
|
| 58 |
+
fn=generate_caption_tts,
|
| 59 |
+
inputs=gr.Image(type="numpy"),
|
| 60 |
+
outputs=[gr.Textbox(label="Generated Caption")],
|
| 61 |
+
title="Image Captioning for Visually Impaired",
|
| 62 |
+
description="Upload an image, get a caption and audio description."
|
| 63 |
+
)
|
| 64 |
|
| 65 |
|
| 66 |
+
interface.launch()
|
| 67 |
+
# demo.launch(share=True)
|
| 68 |
|
| 69 |
+
import gradio as gr
|
| 70 |
+
from transformers import (
|
| 71 |
+
BlipProcessor,
|
| 72 |
+
BlipForConditionalGeneration,
|
| 73 |
+
BlipForQuestionAnswering,
|
| 74 |
+
pipeline
|
| 75 |
+
)
|
| 76 |
+
moderation_model = pipeline(
|
| 77 |
+
"text-classification",
|
| 78 |
+
model="Vrandan/Comment-Moderation",
|
| 79 |
+
return_all_scores=True
|
| 80 |
+
)
|
| 81 |
|
| 82 |
+
from PIL import Image
|
| 83 |
+
import torch
|
| 84 |
+
from gtts import gTTS
|
| 85 |
+
import tempfile
|
| 86 |
|
| 87 |
+
# ----------------------
|
| 88 |
+
# Device setup
|
| 89 |
+
# ----------------------
|
| 90 |
+
device = "cuda" if torch.cuda.is_available() else "cpu"
|
| 91 |
|
| 92 |
+
# ----------------------
|
| 93 |
+
# Load Models Once
|
| 94 |
+
# ----------------------
|
| 95 |
+
print("🔄 Loading models...")
|
| 96 |
|
| 97 |
+
# Captioning
|
| 98 |
+
caption_processor = BlipProcessor.from_pretrained("Salesforce/blip-image-captioning-large")
|
| 99 |
+
caption_model = BlipForConditionalGeneration.from_pretrained("Salesforce/blip-image-captioning-large").to(device)
|
| 100 |
|
| 101 |
+
# VQA
|
| 102 |
+
vqa_processor = BlipProcessor.from_pretrained("Salesforce/blip-vqa-base")
|
| 103 |
+
vqa_model = BlipForQuestionAnswering.from_pretrained("Salesforce/blip-vqa-base").to(device)
|
| 104 |
|
| 105 |
+
# Translation
|
| 106 |
+
translation_models = {
|
| 107 |
+
"Hindi": pipeline("translation", model="Helsinki-NLP/opus-mt-en-hi"),
|
| 108 |
+
"French": pipeline("translation", model="Helsinki-NLP/opus-mt-en-fr"),
|
| 109 |
+
"Spanish": pipeline("translation", model="Helsinki-NLP/opus-mt-en-es"),
|
| 110 |
+
}
|
| 111 |
|
| 112 |
+
# Safety Moderation Pipeline
|
| 113 |
+
moderation_model = pipeline("text-classification", model="unitary/toxic-bert")
|
| 114 |
|
| 115 |
+
print("✅ All models loaded!")
|
| 116 |
|
| 117 |
+
# ----------------------
|
| 118 |
+
# Safety Filter Function
|
| 119 |
+
# ----------------------
|
| 120 |
+
def is_caption_safe(caption):
|
| 121 |
+
try:
|
| 122 |
+
votes = moderation_model(caption)
|
| 123 |
+
# If return_all_scores=True, it's [[{label, score}, ...]]
|
| 124 |
+
if isinstance(votes, list) and isinstance(votes[0], list):
|
| 125 |
+
votes = votes[0]
|
| 126 |
+
# Now safe to loop
|
| 127 |
+
for item in votes:
|
| 128 |
+
if isinstance(item, dict) and item.get("label") in ["V", "V2"] and item.get("score", 0) > 0.5:
|
| 129 |
+
return False
|
| 130 |
+
except Exception as e:
|
| 131 |
+
print("⚠️ Moderation failed:", e)
|
| 132 |
|
| 133 |
+
# Fallback keywords
|
| 134 |
+
unsafe_keywords = [
|
| 135 |
+
"gun", "blood", "skull", "kill", "corpse", "gore", "knife", "weapon",
|
| 136 |
+
"fire", "murder", "dead", "death", "suicide", "bomb", "explosion",
|
| 137 |
+
"terrorist", "assault", "stab", "shoot", "pistol", "rifle", "shotgun",
|
| 138 |
+
"grenade", "horror", "beheaded", "torture", "hostage", "rape",
|
| 139 |
+
"war", "massacre", "chainsaw", "poison", "strangle", "hang", "drown"
|
| 140 |
+
]
|
| 141 |
+
if any(word in caption.lower() for word in unsafe_keywords):
|
| 142 |
+
return False
|
| 143 |
+
return True
|
| 144 |
|
| 145 |
|
| 146 |
|
| 147 |
|
| 148 |
+
# ----------------------
|
| 149 |
+
# Caption + Translate + Speak
|
| 150 |
+
# ----------------------
|
| 151 |
+
def generate_caption_translate_speak(image, target_lang):
|
| 152 |
+
# Step 1: Caption
|
| 153 |
+
inputs = caption_processor(images=image, return_tensors="pt").to(device)
|
| 154 |
+
with torch.no_grad():
|
| 155 |
+
out = caption_model.generate(**inputs, max_new_tokens=50)
|
| 156 |
+
english_caption = caption_processor.decode(out[0], skip_special_tokens=True)
|
| 157 |
|
| 158 |
+
# Step 1.5: Safety Check
|
| 159 |
+
if not is_caption_safe(english_caption):
|
| 160 |
+
return "⚠️ Warning: Unsafe or inappropriate content detected!", "", None
|
| 161 |
|
| 162 |
+
# Step 2: Translate
|
| 163 |
+
if target_lang in translation_models:
|
| 164 |
+
translated = translation_models[target_lang](english_caption)[0]['translation_text']
|
| 165 |
+
else:
|
| 166 |
+
translated = "Translation not available"
|
| 167 |
|
| 168 |
+
# Step 3: Generate Speech (English caption for now)
|
| 169 |
+
tts = gTTS(english_caption, lang="en")
|
| 170 |
+
tmp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".mp3")
|
| 171 |
+
tts.save(tmp_file.name)
|
| 172 |
|
| 173 |
+
return english_caption, translated, tmp_file.name
|
| 174 |
|
| 175 |
+
# ----------------------
|
| 176 |
+
# VQA
|
| 177 |
+
# ----------------------
|
| 178 |
+
def vqa_answer(image, question):
|
| 179 |
+
inputs = vqa_processor(image, question, return_tensors="pt").to(device)
|
| 180 |
+
with torch.no_grad():
|
| 181 |
+
out = vqa_model.generate(**inputs, max_new_tokens=50)
|
| 182 |
+
answer = vqa_processor.decode(out[0], skip_special_tokens=True)
|
| 183 |
|
| 184 |
+
# Run safety filter on answers too
|
| 185 |
+
if not is_caption_safe(answer):
|
| 186 |
+
return "⚠️ Warning: Unsafe or inappropriate content detected!"
|
| 187 |
|
| 188 |
+
return answer
|
| 189 |
|
| 190 |
+
# ----------------------
|
| 191 |
+
# Gradio UI
|
| 192 |
+
# ----------------------
|
| 193 |
+
with gr.Blocks(title="BLIP Vision App") as demo:
|
| 194 |
+
gr.Markdown("## 🖼️ BLIP: Image Captioning + Translation + Speech + VQA (with Safety Filter)")
|
| 195 |
|
| 196 |
+
with gr.Tab("Caption + Translate + Speak"):
|
| 197 |
+
with gr.Row():
|
| 198 |
+
img_in = gr.Image(type="pil", label="Upload Image")
|
| 199 |
+
lang_in = gr.Dropdown(["Hindi", "French", "Spanish"], label="Translate To", value="Hindi")
|
| 200 |
+
eng_out = gr.Textbox(label="English Caption")
|
| 201 |
+
trans_out = gr.Textbox(label="Translated Caption")
|
| 202 |
+
audio_out = gr.Audio(label="Spoken Caption", type="filepath")
|
| 203 |
+
btn1 = gr.Button("Generate Caption, Translate & Speak")
|
| 204 |
+
btn1.click(generate_caption_translate_speak, inputs=[img_in, lang_in], outputs=[eng_out, trans_out, audio_out])
|
| 205 |
|
| 206 |
+
with gr.Tab("Visual Question Answering (VQA)"):
|
| 207 |
+
with gr.Row():
|
| 208 |
+
img_vqa = gr.Image(type="pil", label="Upload Image")
|
| 209 |
+
q_in = gr.Textbox(label="Ask a Question about the Image")
|
| 210 |
+
ans_out = gr.Textbox(label="Answer")
|
| 211 |
+
btn2 = gr.Button("Ask")
|
| 212 |
+
btn2.click(vqa_answer, inputs=[img_vqa, q_in], outputs=ans_out)
|
| 213 |
|
| 214 |
+
demo.launch()
|
| 215 |
|
| 216 |
|
| 217 |
|
|
|
|
| 432 |
|
| 433 |
|
| 434 |
|
| 435 |
+
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