limbicnation
778ea98dd2
adds input validation and error handling implements auto-contrast and gamma correction options fixes indentation and formatting issues improves performance with conditional filters
135 lines
4.7 KiB
Python
135 lines
4.7 KiB
Python
"""
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ComfyUI Depth Estimation Node - Verified and Enhanced Version
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A custom node for depth map estimation using transformer models.
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"""
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import os
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import numpy as np
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import torch
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from transformers import pipeline
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from PIL import Image, ImageFilter, ImageOps
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import folder_paths
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from comfy.model_management import get_torch_device
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def ensure_odd(value):
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"""Ensure the value is an odd integer."""
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value = int(value)
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return value if value % 2 == 1 else value + 1
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def convert_path(path):
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"""Convert path for compatibility between Windows and WSL."""
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if os.name == 'nt':
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return path.replace('\\', '/')
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return path
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def gamma_correction(img, gamma=1.0):
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"""Apply gamma correction to the image."""
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if not isinstance(img, (Image.Image, np.ndarray)):
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raise TypeError("Input must be PIL Image or numpy array")
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inv_gamma = 1.0 / gamma
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table = [((i / 255.0) ** inv_gamma) * 255 for i in range(256)]
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table = np.array(table, np.uint8)
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return Image.fromarray(np.array(img).astype(np.uint8)).point(lambda i: table[i])
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def auto_gamma_correction(image):
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"""Automatically adjust gamma correction for the image."""
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image_array = np.array(image).astype(np.float32) / 255.0
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mean_luminance = np.mean(image_array)
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if mean_luminance <= 0:
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return image
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gamma = np.log(0.5) / np.log(mean_luminance)
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return gamma_correction(image, gamma=gamma)
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def auto_contrast(image):
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"""Apply automatic contrast adjustment to the image."""
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return ImageOps.autocontrast(image)
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class DepthEstimationNode:
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def __init__(self):
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self.device = get_torch_device()
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self.depth_estimator = None
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@classmethod
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def INPUT_TYPES(cls):
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return {
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"required": {
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"image": ("IMAGE",),
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"blur_radius": ("FLOAT", {"default": 2.0, "min": 0.0, "max": 10.0}),
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"median_size": ("INT", {"default": 5, "min": 3, "max": 11, "step": 2}),
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"apply_auto_contrast": ("BOOLEAN", {"default": True}),
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"apply_gamma": ("BOOLEAN", {"default": True})
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}
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}
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RETURN_TYPES = ("IMAGE",)
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FUNCTION = "estimate_depth"
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CATEGORY = "image/processing"
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def ensure_model_loaded(self):
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"""Ensure the depth estimation model is loaded."""
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if self.depth_estimator is None:
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try:
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self.depth_estimator = pipeline("depth-estimation", device=self.device)
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except Exception as e:
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raise RuntimeError(f"Failed to load depth estimation model: {str(e)}")
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def estimate_depth(self, image, blur_radius=2.0, median_size=5,
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apply_auto_contrast=True, apply_gamma=True):
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"""
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Estimate depth from input image with optional post-processing.
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Args:
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image (torch.Tensor): Input image tensor (B,H,W,C)
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blur_radius (float): Gaussian blur radius
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median_size (int): Median filter kernel size
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apply_auto_contrast (bool): Whether to apply automatic contrast
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apply_gamma (bool): Whether to apply gamma correction
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Returns:
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tuple(torch.Tensor): Processed depth map tensor (B,H,W)
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"""
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self.ensure_model_loaded()
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# Input validation
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if not isinstance(image, np.ndarray) or image.ndim != 4:
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raise ValueError("Input image must be 4D numpy array (B,H,W,C)")
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# Convert image to PIL
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image_pil = Image.fromarray((image[0] * 255).astype(np.uint8))
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try:
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# Generate depth map
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depth_map = self.depth_estimator(image_pil)["depth"]
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# Post-processing pipeline
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median_size = ensure_odd(median_size) # Ensure odd kernel size
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if blur_radius > 0:
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depth_map = depth_map.filter(ImageFilter.GaussianBlur(radius=blur_radius))
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depth_map = depth_map.filter(ImageFilter.MedianFilter(size=median_size))
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if apply_auto_contrast:
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depth_map = auto_contrast(depth_map)
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if apply_gamma:
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depth_map = auto_gamma_correction(depth_map)
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# Convert to tensor format
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depth_tensor = np.array(depth_map).astype(np.float32) / 255.0
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depth_tensor = depth_tensor[None, ...] # Add batch dimension
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return (depth_tensor,)
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except Exception as e:
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raise RuntimeError(f"Depth estimation failed: {str(e)}")
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# Node registration
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NODE_CLASS_MAPPINGS = {
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"DepthEstimationNode": DepthEstimationNode
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}
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NODE_DISPLAY_NAME_MAPPINGS = {
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"DepthEstimationNode": "Depth Estimation"
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} |