Method resize_image

ddddocr/preprocessing/image_processor.py:22–60

调整图像尺寸 Args: image: 输入图像 target_size: 目标尺寸 (width, height) keep_aspect_ratio: 是否保持宽高比 resample: 重采样方法 Returns: 调整尺寸后的图像 Raises: ImageProcessError: 当处理失败时

(image: Image.Image, target_size: Tuple[int, int], 
                    keep_aspect_ratio: bool = False, 
                    resample: int = Image.LANCZOS)

    
    @staticmethod
    def resize_image(image: Image.Image, target_size: Tuple[int, int], 
                    keep_aspect_ratio: bool = False, 
                    resample: int = Image.LANCZOS) -> Image.Image:
        """
        调整图像尺寸
        
        Args:
            image: 输入图像
            target_size: 目标尺寸 (width, height)
            keep_aspect_ratio: 是否保持宽高比
            resample: 重采样方法
            
        Returns:
            调整尺寸后的图像
            
        Raises:
            ImageProcessError: 当处理失败时
        """
        try:
            if keep_aspect_ratio:
                # 计算保持宽高比的尺寸
                original_width, original_height = image.size
                target_width, target_height = target_size
                
                # 计算缩放比例
                width_ratio = target_width / original_width
                height_ratio = target_height / original_height
                scale_ratio = min(width_ratio, height_ratio)
                
                # 计算新尺寸
                new_width = int(original_width * scale_ratio)
                new_height = int(original_height * scale_ratio)
                
                return image.resize((new_width, new_height), resample)
            else:
                return image.resize(target_size, resample)
                
        except Exception as e:
            raise ImageProcessError(f"图像尺寸调整失败: {str(e)}") from e
    
    @staticmethod
    def convert_to_grayscale(image: Image.Image) -> Image.Image: