update batch loader

main.py

@@ -32,6 +32,9 @@ Examples:
   
   # Run analysis and save to custom output directory
   python main.py --output-dir custom_results
+  
+  # Run with memory-efficient batch processing
+  python main.py --deqa-only --batch-size 4 --max-image-size 512 512
         """
     )
     
@@ -102,6 +105,28 @@ Examples:
         help='Use only DeQA metric (disable traditional metrics)'
     )
 
+    parser.add_argument(
+        '--batch-size',
+        type=int,
+        default=8,
+        help='Batch size for memory-efficient processing (default: 8)'
+    )
+
+    parser.add_argument(
+        '--max-image-size',
+        type=int,
+        nargs=2,
+        default=[1024, 1024],
+        metavar=('WIDTH', 'HEIGHT'),
+        help='Maximum image dimensions for preprocessing (default: 1024 1024)'
+    )
+
+    parser.add_argument(
+        '--disable-memory-monitoring',
+        action='store_true',
+        help='Disable memory usage monitoring'
+    )
+    
     args = parser.parse_args()
     
     # Setup logging
@@ -150,7 +175,10 @@ Examples:
             enable_deqa=enable_deqa,
             enable_traditional=enable_traditional,
             enable_pyiqa=enable_pyiqa_flag,
-            pyiqa_selected_metrics=(selected_top20 if args.pyiqa_top20 else None)
+            pyiqa_selected_metrics=(selected_top20 if args.pyiqa_top20 else None),
+            batch_size=args.batch_size,
+            max_image_size=tuple(args.max_image_size),
+            enable_memory_monitoring=not args.disable_memory_monitoring
         )
         results, report = analyzer.run_analysis()
         

src/batch_loader.py

@@ -0,0 +1,301 @@
+"""
+Memory-efficient batch loader for image processing.
+Reduces memory usage by processing images in configurable batches with optional preprocessing.
+"""
+
+import gc
+import torch
+from PIL import Image
+from pathlib import Path
+from typing import List, Dict, Any, Iterator, Tuple, Optional
+import psutil
+import os
+
+from .logger_config import get_logger
+
+logger = get_logger(__name__)
+
+
+class MemoryEfficientBatchLoader:
+    """Memory-efficient image batch loader with preprocessing options."""
+    
+    def __init__(self, 
+                 batch_size: int = 8,
+                 max_image_size: Optional[Tuple[int, int]] = (1024, 1024),
+                 enable_memory_monitoring: bool = True,
+                 memory_threshold_percent: float = 85.0):
+        """
+        Initialize the batch loader.
+        
+        Args:
+            batch_size: Number of images to process per batch
+            max_image_size: Maximum image dimensions (width, height). If None, no resizing
+            enable_memory_monitoring: Whether to monitor memory usage
+            memory_threshold_percent: Memory usage threshold to trigger cleanup
+        """
+        self.batch_size = batch_size
+        self.max_image_size = max_image_size
+        self.enable_memory_monitoring = enable_memory_monitoring
+        self.memory_threshold_percent = memory_threshold_percent
+        
+        logger.info(f"BatchLoader initialized: batch_size={batch_size}, "
+                   f"max_size={max_image_size}, memory_monitoring={enable_memory_monitoring}")
+    
+    def _get_memory_usage(self) -> float:
+        """Get current memory usage percentage."""
+        return psutil.virtual_memory().percent
+    
+    def _cleanup_memory(self):
+        """Force garbage collection and clear GPU cache if available."""
+        gc.collect()
+        if torch.cuda.is_available():
+            torch.cuda.empty_cache()
+        
+        if self.enable_memory_monitoring:
+            memory_usage = self._get_memory_usage()
+            logger.debug(f"Memory cleanup performed. Current usage: {memory_usage:.1f}%")
+    
+    def _check_memory_threshold(self):
+        """Check if memory usage exceeds threshold and cleanup if needed."""
+        if not self.enable_memory_monitoring:
+            return
+            
+        memory_usage = self._get_memory_usage()
+        if memory_usage > self.memory_threshold_percent:
+            logger.warning(f"Memory usage ({memory_usage:.1f}%) exceeds threshold "
+                          f"({self.memory_threshold_percent}%). Performing cleanup...")
+            self._cleanup_memory()
+    
+    def _preprocess_image(self, image_path: str) -> Optional[Image.Image]:
+        """
+        Load and preprocess image to reduce memory usage.
+        
+        Args:
+            image_path: Path to the image file
+            
+        Returns:
+            PIL Image object or None if failed
+        """
+        try:
+            image = Image.open(image_path)
+            
+            # Convert to RGB if needed (removes alpha channel)
+            if image.mode != 'RGB':
+                image = image.convert('RGB')
+            
+            # Resize if max_image_size is specified
+            if self.max_image_size:
+                # Calculate resize ratio to maintain aspect ratio
+                width, height = image.size
+                max_w, max_h = self.max_image_size
+                
+                if width > max_w or height > max_h:
+                    ratio = min(max_w / width, max_h / height)
+                    new_size = (int(width * ratio), int(height * ratio))
+                    image = image.resize(new_size, Image.Resampling.LANCZOS)
+                    logger.debug(f"Resized {Path(image_path).name} from {width}x{height} to {new_size[0]}x{new_size[1]}")
+            
+            return image
+            
+        except Exception as e:
+            logger.error(f"Failed to preprocess image {image_path}: {e}")
+            return None
+    
+    def _get_file_size_mb(self, file_path: str) -> float:
+        """Get file size in MB."""
+        try:
+            return os.path.getsize(file_path) / (1024 * 1024)
+        except:
+            return 0.0
+    
+    def create_batches(self, image_paths: List[str]) -> Iterator[List[str]]:
+        """
+        Create batches of image paths.
+        
+        Args:
+            image_paths: List of image file paths
+            
+        Yields:
+            Batches of image paths
+        """
+        for i in range(0, len(image_paths), self.batch_size):
+            batch = image_paths[i:i + self.batch_size]
+            yield batch
+    
+    def process_batch(self, image_paths: List[str], 
+                     scoring_function, 
+                     include_file_info: bool = True) -> Dict[str, Dict[str, Any]]:
+        """
+        Process a batch of images with memory management.
+        
+        Args:
+            image_paths: List of image paths in the batch
+            scoring_function: Function to score images (should accept list of PIL Images)
+            include_file_info: Whether to include file size and path info
+            
+        Returns:
+            Dictionary with results for each image in the batch
+        """
+        results = {}
+        
+        # Check memory before processing batch
+        self._check_memory_threshold()
+        
+        # Preprocess all images in batch
+        processed_images = []
+        valid_paths = []
+        
+        for path in image_paths:
+            image = self._preprocess_image(path)
+            if image is not None:
+                processed_images.append(image)
+                valid_paths.append(path)
+            else:
+                # Handle failed image
+                image_name = Path(path).name
+                results[image_name] = {
+                    'error': f'Failed to load/preprocess image: {path}',
+                    'file_path': path if include_file_info else None,
+                    'file_size_mb': self._get_file_size_mb(path) if include_file_info else None
+                }
+        
+        if processed_images:
+            try:
+                # Score the batch
+                scores = scoring_function(processed_images)
+                
+                # Combine results
+                for i, (path, score) in enumerate(zip(valid_paths, scores)):
+                    image_name = Path(path).name
+                    result = {
+                        'deqa_score': score,
+                    }
+                    
+                    if include_file_info:
+                        result.update({
+                            'file_path': path,
+                            'file_size_mb': round(self._get_file_size_mb(path), 2)
+                        })
+                    
+                    results[image_name] = result
+                
+                logger.debug(f"Processed batch of {len(processed_images)} images")
+                
+            except Exception as e:
+                logger.error(f"Error scoring batch: {e}")
+                # Mark all as failed
+                for path in valid_paths:
+                    image_name = Path(path).name
+                    results[image_name] = {
+                        'error': f'Scoring failed: {str(e)}',
+                        'file_path': path if include_file_info else None,
+                        'file_size_mb': self._get_file_size_mb(path) if include_file_info else None
+                    }
+            
+            finally:
+                # Clear processed images from memory
+                del processed_images
+                self._cleanup_memory()
+        
+        return results
+    
+    def get_memory_stats(self) -> Dict[str, Any]:
+        """Get current memory statistics."""
+        memory = psutil.virtual_memory()
+        stats = {
+            'memory_percent': memory.percent,
+            'memory_available_gb': memory.available / (1024**3),
+            'memory_used_gb': memory.used / (1024**3),
+            'memory_total_gb': memory.total / (1024**3)
+        }
+        
+        if torch.cuda.is_available():
+            gpu_memory = torch.cuda.memory_allocated() / (1024**3)
+            gpu_cached = torch.cuda.memory_reserved() / (1024**3)
+            stats.update({
+                'gpu_memory_allocated_gb': gpu_memory,
+                'gpu_memory_cached_gb': gpu_cached
+            })
+        
+        return stats
+
+
+class BatchProcessor:
+    """High-level processor that uses MemoryEfficientBatchLoader."""
+    
+    def __init__(self, 
+                 batch_size: int = 8,
+                 max_image_size: Optional[Tuple[int, int]] = (1024, 1024),
+                 enable_memory_monitoring: bool = True):
+        """
+        Initialize the batch processor.
+        
+        Args:
+            batch_size: Number of images to process per batch
+            max_image_size: Maximum image dimensions for preprocessing
+            enable_memory_monitoring: Whether to monitor memory usage
+        """
+        self.loader = MemoryEfficientBatchLoader(
+            batch_size=batch_size,
+            max_image_size=max_image_size,
+            enable_memory_monitoring=enable_memory_monitoring
+        )
+    
+    def process_images_in_batches(self, 
+                                 image_paths: List[str], 
+                                 scorer,
+                                 progress_callback=None) -> Dict[str, Dict[str, Any]]:
+        """
+        Process all images in batches.
+        
+        Args:
+            image_paths: List of all image paths to process
+            scorer: Object with score_multiple_images method
+            progress_callback: Optional function to call with progress updates
+            
+        Returns:
+            Combined results from all batches
+        """
+        all_results = {}
+        total_images = len(image_paths)
+        processed_images = 0
+        
+        logger.info(f"Processing {total_images} images in batches of {self.loader.batch_size}")
+        
+        # Show initial memory stats
+        if self.loader.enable_memory_monitoring:
+            initial_stats = self.loader.get_memory_stats()
+            logger.info(f"Initial memory usage: {initial_stats['memory_percent']:.1f}% "
+                       f"({initial_stats['memory_used_gb']:.1f}GB/{initial_stats['memory_total_gb']:.1f}GB)")
+        
+        for batch_idx, batch_paths in enumerate(self.loader.create_batches(image_paths)):
+            logger.info(f"Processing batch {batch_idx + 1} ({len(batch_paths)} images)...")
+            
+            # Create scoring function that works with the batch loader
+            def scoring_function(images):
+                return scorer.score_multiple_images_from_pil(images)
+            
+            # Process batch
+            batch_results = self.loader.process_batch(batch_paths, scoring_function)
+            all_results.update(batch_results)
+            
+            processed_images += len(batch_paths)
+            
+            # Progress callback
+            if progress_callback:
+                progress_callback(processed_images, total_images)
+            
+            # Log progress and memory stats
+            progress_percent = (processed_images / total_images) * 100
+            logger.info(f"Progress: {processed_images}/{total_images} ({progress_percent:.1f}%)")
+            
+            if self.loader.enable_memory_monitoring:
+                current_stats = self.loader.get_memory_stats()
+                logger.debug(f"Current memory usage: {current_stats['memory_percent']:.1f}%")
+        
+        logger.info(f"Completed processing {total_images} images")
+        
+        # Final memory cleanup
+        self.loader._cleanup_memory()
+        
+        return all_results

src/deqa_scorer.py

@@ -119,6 +119,57 @@ class DeQAScorer:
             logger.error(f"Error scoring images: {e}")
             return [None] * len(image_paths)
     
+    def score_multiple_images_from_pil(self, images: List[Image.Image]) -> List[Union[float, None]]:
+        """
+        Score multiple PIL images directly (for batch processing).
+        
+        Args:
+            images: List of PIL Image objects
+            
+        Returns:
+            List of DeQA scores (0-5 scale) or None for failed images
+        """
+        if not self._is_loaded:
+            self.load_model()
+        
+        try:
+            # Filter out None images
+            valid_images = [img for img in images if img is not None]
+            
+            if not valid_images:
+                return [None] * len(images)
+            
+            # Score images
+            scores = self.model.score(valid_images)
+            
+            # Convert scores to list of floats and map back to original positions
+            result_scores = []
+            valid_idx = 0
+            
+            for img in images:
+                if img is None:
+                    result_scores.append(None)
+                else:
+                    try:
+                        score = scores[valid_idx]
+                        if hasattr(score, 'item'):
+                            result_scores.append(float(score.item()))
+                        elif hasattr(score, 'tolist'):
+                            result_scores.append(float(score.tolist()))
+                        else:
+                            result_scores.append(float(score))
+                        valid_idx += 1
+                    except Exception as e:
+                        logger.warning(f"Failed to convert score: {e}")
+                        result_scores.append(None)
+                        valid_idx += 1
+            
+            return result_scores
+            
+        except Exception as e:
+            logger.error(f"Error scoring PIL images: {e}")
+            return [None] * len(images)
+    
     def is_loaded(self) -> bool:
         """Check if the model is loaded."""
         return self._is_loaded

src/iqa_analyzer.py

@@ -12,6 +12,7 @@ from datetime import datetime
 
 from .metrics import MetricsManager
 from .logger_config import get_logger
+from .batch_loader import BatchProcessor
 
 logger = get_logger(__name__)
 
@@ -21,7 +22,9 @@ class IQAAnalyzer:
     
     def __init__(self, image_dir: str, output_dir: str = "results", 
                  enable_deqa: bool = True, enable_traditional: bool = True,
-                 enable_pyiqa: bool = True, pyiqa_selected_metrics: List[str] | None = None):
+                 enable_pyiqa: bool = True, pyiqa_selected_metrics: List[str] | None = None,
+                 batch_size: int = 8, max_image_size: tuple = (1024, 1024),
+                 enable_memory_monitoring: bool = True):
         """
         Initialize the IQA analyzer.
         
@@ -30,11 +33,21 @@ class IQAAnalyzer:
             output_dir: Directory to save results
             enable_deqa: Whether to enable DeQA metric
             enable_traditional: Whether to enable traditional metrics
+            enable_pyiqa: Whether to enable PyIQA metrics
+            pyiqa_selected_metrics: List of specific PyIQA metrics to use
+            batch_size: Number of images to process per batch
+            max_image_size: Maximum image dimensions for preprocessing
+            enable_memory_monitoring: Whether to monitor memory usage
         """
         self.image_dir = Path(image_dir)
         self.output_dir = Path(output_dir)
         self.output_dir.mkdir(parents=True, exist_ok=True)
         
+        # Store batch processing settings
+        self.batch_size = batch_size
+        self.max_image_size = max_image_size
+        self.enable_memory_monitoring = enable_memory_monitoring
+        
         # Initialize metrics manager
         self.metrics_manager = MetricsManager(
             enable_deqa=enable_deqa,
@@ -43,12 +56,23 @@ class IQAAnalyzer:
             pyiqa_selected_metrics=pyiqa_selected_metrics
         )
         
+        # Initialize batch processor (only if DeQA is enabled for memory efficiency)
+        self.batch_processor = None
+        if enable_deqa:
+            self.batch_processor = BatchProcessor(
+                batch_size=batch_size,
+                max_image_size=max_image_size,
+                enable_memory_monitoring=enable_memory_monitoring
+            )
+        
         # Results storage
         self.results = {}
         self.timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
         
         logger.info(f"IQA Analyzer initialized for: {image_dir}")
         logger.info(f"Available metrics: {self.metrics_manager.get_available_metrics()}")
+        logger.info(f"Batch processing: {'enabled' if self.batch_processor else 'disabled'} "
+                   f"(batch_size={batch_size}, max_size={max_image_size})")
     
     def _get_image_files(self) -> List[Path]:
         """Get all image files from the directory."""
@@ -81,8 +105,30 @@ class IQAAnalyzer:
         # Prepare image paths for analysis
         image_paths = [str(img_path) for img_path in image_files]
         
-        # Calculate all metrics for all images
+        # Use batch processing if available and only DeQA is enabled
-        logger.info("Calculating comprehensive metrics...")
+        available_metrics = self.metrics_manager.get_available_metrics()
+        use_batch_processing = (self.batch_processor is not None and 
+                               available_metrics == ['deqa'])
+        
+        if use_batch_processing:
+            logger.info(f"Using memory-efficient batch processing (batch_size={self.batch_size})...")
+            
+            # Get DeQA scorer
+            deqa_scorer = self.metrics_manager.get_deqa_scorer()
+            if deqa_scorer is None:
+                logger.error("DeQA scorer not available for batch processing")
+                return {}
+            
+            # Process with batch loader
+            def progress_callback(processed, total):
+                logger.info(f"Batch progress: {processed}/{total} images processed")
+            
+            self.results = self.batch_processor.process_images_in_batches(
+                image_paths, deqa_scorer, progress_callback
+            )
+        else:
+            # Fall back to original processing
+            logger.info("Using standard processing...")
             self.results = self.metrics_manager.calculate_metrics_batch(image_paths)
         
         logger.info(f"Analysis completed for {len(self.results)} images")

src/metrics/deqa_metric.py

@@ -102,6 +102,57 @@ class DeQAMetric:
             logger.error(f"Error scoring multiple images: {e}")
             return [None] * len(image_paths)
     
+    def score_multiple_images_from_pil(self, images: List[Image.Image]) -> List[Optional[float]]:
+        """
+        Score multiple PIL images directly (for batch processing).
+        
+        Args:
+            images: List of PIL Image objects
+            
+        Returns:
+            List of DeQA scores (0-5 scale) or None for failed images
+        """
+        if not self._is_loaded:
+            self.load_model()
+        
+        try:
+            # Filter out None images
+            valid_images = [img for img in images if img is not None]
+            
+            if not valid_images:
+                return [None] * len(images)
+            
+            # Score images
+            scores = self.model.score(valid_images)
+            
+            # Convert scores to list of floats and map back to original positions
+            result_scores = []
+            valid_idx = 0
+            
+            for img in images:
+                if img is None:
+                    result_scores.append(None)
+                else:
+                    try:
+                        score = scores[valid_idx]
+                        if hasattr(score, 'item'):
+                            result_scores.append(float(score.item()))
+                        elif hasattr(score, 'tolist'):
+                            result_scores.append(float(score.tolist()))
+                        else:
+                            result_scores.append(float(score))
+                        valid_idx += 1
+                    except Exception as e:
+                        logger.warning(f"Failed to convert score: {e}")
+                        result_scores.append(None)
+                        valid_idx += 1
+            
+            return result_scores
+            
+        except Exception as e:
+            logger.error(f"Error scoring PIL images: {e}")
+            return [None] * len(images)
+    
     def get_metric_name(self) -> str:
         """Get the name of this metric."""
         return "DeQA"

src/metrics/metrics_manager.py

@@ -196,6 +196,12 @@ class MetricsManager:
             return self.metrics['deqa'].score_multiple_images(image_paths)
         return [None] * len(image_paths)
     
+    def get_deqa_scorer(self):
+        """Get the DeQA scorer object for batch processing."""
+        if 'deqa' in self.metrics and self.metrics['deqa'] is not None:
+            return self.metrics['deqa']
+        return None
+    
     def get_traditional_metrics_only(self, image_path: str) -> Dict[str, float]:
         """Get only traditional metrics for an image."""
         if 'traditional' in self.metrics and self.metrics['traditional'] is not None:

test_batch_loader.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+"""
+Test script for memory-efficient batch loader.
+"""
+
+import sys
+from pathlib import Path
+
+# Add src directory to path for imports
+sys.path.append(str(Path(__file__).parent / "src"))
+
+from src.batch_loader import MemoryEfficientBatchLoader, BatchProcessor
+from src.logger_config import setup_logging
+
+def test_batch_loader():
+    """Test the batch loader with sample functionality."""
+    
+    # Setup logging
+    logger = setup_logging(log_dir="logs", log_level="INFO")
+    
+    # Test configuration
+    batch_size = 4
+    max_image_size = (512, 512)
+    
+    # Create batch loader
+    loader = MemoryEfficientBatchLoader(
+        batch_size=batch_size,
+        max_image_size=max_image_size,
+        enable_memory_monitoring=True
+    )
+    
+    # Show initial memory stats
+    memory_stats = loader.get_memory_stats()
+    logger.info(f"Initial memory stats: {memory_stats}")
+    
+    # Sample image paths (for testing - these would be real image paths)
+    sample_image_paths = [
+        f"/home/nguyendc/thanh-dev/IQA-Metric-Benchmark/data/task/cni/images/image_{i}.png" 
+        for i in range(10)
+    ]
+    
+    # Test batch creation
+    batches = list(loader.create_batches(sample_image_paths))
+    logger.info(f"Created {len(batches)} batches from {len(sample_image_paths)} images")
+    for i, batch in enumerate(batches):
+        logger.info(f"Batch {i+1}: {len(batch)} images")
+    
+    # Mock scoring function for testing
+    def mock_scoring_function(images):
+        """Mock function that returns random scores."""
+        import random
+        return [random.uniform(1.0, 5.0) for _ in images]
+    
+    # Test processing a single batch (with mock data)
+    if batches:
+        logger.info("Testing batch processing with mock data...")
+        # Note: This will fail with actual file paths that don't exist
+        # but demonstrates the interface
+    
+    logger.info("Batch loader test completed!")
+
+if __name__ == "__main__":
+    test_batch_loader()