263 lines
9.9 KiB
Python
263 lines
9.9 KiB
Python
import torch
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import numpy as np
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import cv2
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import comfy.utils
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from typing import List, Dict, Any, Tuple
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class DDImageUniformSize:
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"""
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DD 图像统一尺寸 - 将输入的图像或视频统一调整为指定分辨率
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支持多输入端口，多种缩放方法和尺寸适配策略
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只有接入内容的输入端口才会生成对应的输出
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"""
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@classmethod
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def INPUT_TYPES(cls):
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# 基本配置
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inputs = {
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"required": {
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"缩放方法": (["邻近-精确", "双线性插值", "区域", "双三次插值", "lanczos"], {"default": "双线性插值"}),
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"宽度": ("INT", {"default": 512, "min": 8, "max": 8192, "step": 8}),
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"高度": ("INT", {"default": 512, "min": 8, "max": 8192, "step": 8}),
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"尺寸适配": (["自适应", "拉伸", "裁剪", "填充"], {"default": "自适应"}),
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},
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"optional": {
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# 四个固定的可选输入端口
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"图片A": ("IMAGE",),
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"图片B": ("IMAGE",),
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"图片C": ("IMAGE",),
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"图片D": ("IMAGE",),
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}
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}
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return inputs
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# 默认输出端口设置 - 所有可能的输出
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RETURN_TYPES = ("IMAGE", "IMAGE", "IMAGE", "IMAGE")
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RETURN_NAMES = ("图片A", "图片B", "图片C", "图片D")
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FUNCTION = "resize_images"
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CATEGORY = "🍺DD系列节点"
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# 常量：插值方法映射
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INTERPOLATION_MAP = {
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"邻近-精确": cv2.INTER_NEAREST_EXACT,
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"双线性插值": cv2.INTER_LINEAR,
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"区域": cv2.INTER_AREA,
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"双三次插值": cv2.INTER_CUBIC,
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"lanczos": cv2.INTER_LANCZOS4
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}
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def _resize_batch(self, image_batch, target_size, interpolation_mode, size_adapt):
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"""调整一批图像的大小"""
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if image_batch is None:
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return None
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# 确保输入为张量
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if not isinstance(image_batch, torch.Tensor):
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return None
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# 获取图像尺寸
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if len(image_batch.shape) == 3: # 单张图片 [H, W, C]
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image_batch = image_batch.unsqueeze(0) # [1, H, W, C]
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batch_size, height, width, channels = image_batch.shape
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target_height, target_width = target_size
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result = None
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# 获取插值方法
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interpolation = self.INTERPOLATION_MAP.get(interpolation_mode, cv2.INTER_LINEAR)
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# 根据尺寸适配方法调整图像
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if size_adapt == "拉伸":
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# 直接调整到目标尺寸
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result = self._batch_resize(image_batch, target_size, interpolation)
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elif size_adapt == "自适应":
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# 保持宽高比缩放
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result = self._batch_adaptive_resize(image_batch, target_size, interpolation)
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elif size_adapt == "裁剪":
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# 保持宽高比缩放后居中裁剪
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result = self._batch_center_crop(image_batch, target_size, interpolation)
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elif size_adapt == "填充":
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# 保持宽高比缩放后填充
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result = self._batch_pad(image_batch, target_size, interpolation)
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else:
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# 默认使用自适应
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result = self._batch_adaptive_resize(image_batch, target_size, interpolation)
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return result
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def _batch_resize(self, batch, target_size, interpolation):
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"""批量调整尺寸 - 直接拉伸"""
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# 使用PyTorch内置的resize函数
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target_height, target_width = target_size
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# 将图像从BHWC转换为BCHW
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batch_bchw = batch.permute(0, 3, 1, 2)
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torch_mode = self._get_torch_mode(interpolation)
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# 只在适当的模式下使用align_corners参数
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if torch_mode in ['bilinear', 'bicubic']:
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resized = torch.nn.functional.interpolate(
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batch_bchw,
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size=(target_height, target_width),
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mode=torch_mode,
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align_corners=False
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)
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else:
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# 对于'nearest'和'area'模式不使用align_corners参数
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resized = torch.nn.functional.interpolate(
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batch_bchw,
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size=(target_height, target_width),
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mode=torch_mode
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)
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# 转回BHWC
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return resized.permute(0, 2, 3, 1)
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def _get_torch_mode(self, cv2_interpolation):
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"""将OpenCV插值模式转换为PyTorch模式"""
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if cv2_interpolation in [cv2.INTER_NEAREST, cv2.INTER_NEAREST_EXACT]:
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return 'nearest'
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elif cv2_interpolation == cv2.INTER_LINEAR:
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return 'bilinear'
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elif cv2_interpolation == cv2.INTER_CUBIC:
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return 'bicubic'
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elif cv2_interpolation == cv2.INTER_AREA:
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return 'area'
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else:
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return 'bilinear' # 默认返回双线性
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def _batch_adaptive_resize(self, batch, target_size, interpolation):
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"""批量自适应调整尺寸 - 保持宽高比"""
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batch_size, height, width, channels = batch.shape
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target_height, target_width = target_size
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# 计算缩放比例
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ratio = min(target_width / width, target_height / height)
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new_width = int(width * ratio)
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new_height = int(height * ratio)
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# 先调整大小
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batch_bchw = batch.permute(0, 3, 1, 2)
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torch_mode = self._get_torch_mode(interpolation)
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# 只在适当的模式下使用align_corners参数
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if torch_mode in ['bilinear', 'bicubic']:
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resized = torch.nn.functional.interpolate(
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batch_bchw,
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size=(new_height, new_width),
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mode=torch_mode,
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align_corners=False
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)
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else:
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# 对于'nearest'和'area'模式不使用align_corners参数
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resized = torch.nn.functional.interpolate(
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batch_bchw,
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size=(new_height, new_width),
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mode=torch_mode
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)
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# 创建目标大小的空张量
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result = torch.zeros(batch_size, channels, target_height, target_width, device=batch.device)
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# 计算偏移量
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y_offset = (target_height - new_height) // 2
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x_offset = (target_width - new_width) // 2
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# 将调整后的图像放在中心
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result[:, :, y_offset:y_offset + new_height, x_offset:x_offset + new_width] = resized
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# 转回BHWC
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return result.permute(0, 2, 3, 1)
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def _batch_center_crop(self, batch, target_size, interpolation):
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"""批量中心裁剪 - 先调整大小然后裁剪"""
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batch_size, height, width, channels = batch.shape
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target_height, target_width = target_size
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# 计算缩放比例 - 以较大的比例为准，确保裁剪
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ratio = max(target_width / width, target_height / height)
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new_width = int(width * ratio)
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new_height = int(height * ratio)
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# 调整大小
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batch_bchw = batch.permute(0, 3, 1, 2)
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torch_mode = self._get_torch_mode(interpolation)
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# 只在适当的模式下使用align_corners参数
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if torch_mode in ['bilinear', 'bicubic']:
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resized = torch.nn.functional.interpolate(
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batch_bchw,
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size=(new_height, new_width),
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mode=torch_mode,
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align_corners=False
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)
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else:
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# 对于'nearest'和'area'模式不使用align_corners参数
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resized = torch.nn.functional.interpolate(
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batch_bchw,
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size=(new_height, new_width),
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mode=torch_mode
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)
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# 计算裁剪区域
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y_start = (new_height - target_height) // 2
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x_start = (new_width - target_width) // 2
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# 裁剪中心区域
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cropped = resized[:, :, y_start:y_start + target_height, x_start:x_start + target_width]
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# 转回BHWC
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return cropped.permute(0, 2, 3, 1)
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def _batch_pad(self, batch, target_size, interpolation):
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"""批量填充 - 保持宽高比并填充"""
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# 这与自适应调整相同，因为我们已经创建了全零背景并居中放置调整后的图像
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return self._batch_adaptive_resize(batch, target_size, interpolation)
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def resize_images(self, 缩放方法, 宽度, 高度, 尺寸适配, 图片A=None, 图片B=None, 图片C=None, 图片D=None):
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"""根据指定参数统一调整所有输入图像的大小"""
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target_size = (高度, 宽度) # (H, W)
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results = []
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# 创建输入图像和名称的映射
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input_images = {
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"图片A": 图片A,
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"图片B": 图片B,
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"图片C": 图片C,
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"图片D": 图片D
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}
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# 过滤出有内容的输入
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valid_inputs = {name: img for name, img in input_images.items() if img is not None}
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# 动态设置输出类型和名称
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if len(valid_inputs) > 0:
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self.RETURN_TYPES = tuple(["IMAGE"] * len(valid_inputs))
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self.RETURN_NAMES = tuple(valid_inputs.keys())
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else:
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# 如果没有有效输入，提供一个默认输出
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self.RETURN_TYPES = ("IMAGE",)
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self.RETURN_NAMES = ("图片A",)
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# 创建默认空图像
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empty_image = torch.zeros(1, 高度, 宽度, 3)
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return (empty_image,)
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# 处理每个有效输入
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for img in valid_inputs.values():
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# 调整图像大小
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resized = self._resize_batch(img, target_size, 缩放方法, 尺寸适配)
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results.append(resized)
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return tuple(results)
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# 节点类映射
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NODE_CLASS_MAPPINGS = {
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"DD-ImageUniformSize": DDImageUniformSize
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}
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# 节点显示名称映射 - 使用英文（中文通过locales提供）
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NODE_DISPLAY_NAME_MAPPINGS = {
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"DD-ImageUniformSize": "DD Image Uniform Size"
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}
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