Method remove_noise

ddddocr/preprocessing/image_processor.py:169–197

去除图像噪声 Args: image: 输入图像 kernel_size: 滤波核大小 Returns: 去噪后的图像 Raises: ImageProcessError: 当处理失败时

(image: Image.Image, kernel_size: int = 3)

    
    @staticmethod
    def remove_noise(image: Image.Image, kernel_size: int = 3) -> Image.Image:
        """
        去除图像噪声
        
        Args:
            image: 输入图像
            kernel_size: 滤波核大小
            
        Returns:
            去噪后的图像
            
        Raises:
            ImageProcessError: 当处理失败时
        """
        try:
            img_array = image_to_numpy(image)
            
            # 使用中值滤波去噪
            if len(img_array.shape) == 3:
                # 彩色图像
                denoised = cv2.medianBlur(img_array, kernel_size)
            else:
                # 灰度图像
                denoised = cv2.medianBlur(img_array, kernel_size)
            
            return numpy_to_image(denoised, image.mode)
            
        except Exception as e:
            raise ImageProcessError(f"图像去噪失败: {str(e)}") from e
    
    @staticmethod
    def binarize_image(image: Image.Image, threshold: int = 128,