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ported code refactor changes from PR #1221

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- pass a PIL.Image to img2img and inpaint rather than tensor
- To support clipseg, inpaint needs to accept an "L" or "1" format
  mask. Made the appropriate change.
This commit is contained in:
Lincoln Stein 2022-10-22 20:06:45 -04:00
parent 59747ecf24
commit c04133a512
3 changed files with 88 additions and 82 deletions
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54
ldm/generate.py
View File

@ -393,7 +393,7 @@ class Generate:
log_tokens =self.log_tokenization
)
init_image,mask_image,pil_image,pil_mask = self._make_images(
init_image, mask_image = self._make_images(
init_img,
init_mask,
width,
@ -433,8 +433,6 @@ class Generate:
height=height,
init_img=init_img, # embiggen needs to manipulate from the unmodified init_img
init_image=init_image, # notice that init_image is different from init_img
pil_image=pil_image,
pil_mask=pil_mask,
mask_image=mask_image,
strength=strength,
threshold=threshold,
@ -626,7 +624,7 @@ class Generate:
init_image = None
init_mask = None
if not img:
return None, None, None, None
return None, None
image = self._load_img(img)
@ -636,23 +634,22 @@ class Generate:
# if image has a transparent area and no mask was provided, then try to generate mask
if self._has_transparency(image):
self._transparency_check_and_warning(image, mask)
# this returns a torch tensor
init_mask = self._create_init_mask(image, width, height, fit=fit)
if (image.width * image.height) > (self.width * self.height) and self.size_matters:
print(">> This input is larger than your defaults. If you run out of memory, please use a smaller image.")
self.size_matters = False
init_image = self._create_init_image(image,width,height,fit=fit) # this returns a torch tensor
init_image = self._create_init_image(image,width,height,fit=fit)
if mask:
mask_image = self._load_img(mask) # this returns an Image
mask_image = self._load_img(mask)
init_mask = self._create_init_mask(mask_image,width,height,fit=fit)
elif text_mask:
init_mask = self._txt2mask(image, text_mask, width, height, fit=fit)
return init_image, init_mask, image, mask_image
return init_image,init_mask
def _make_base(self):
if not self.generators.get('base'):
@ -869,33 +866,15 @@ class Generate:
def _create_init_image(self, image, width, height, fit=True):
image = image.convert('RGB')
if fit:
image = self._fit_image(image, (width, height))
else:
image = self._squeeze_image(image)
image = np.array(image).astype(np.float32) / 255.0
image = image[None].transpose(0, 3, 1, 2)
image = torch.from_numpy(image)
image = 2.0 * image - 1.0
return image.to(self.device)
image = self._fit_image(image, (width, height)) if fit else self._squeeze_image(image)
return image
def _create_init_mask(self, image, width, height, fit=True):
# convert into a black/white mask
image = self._image_to_mask(image)
image = image.convert('RGB')
# now we adjust the size
if fit:
image = self._fit_image(image, (width, height))
else:
image = self._squeeze_image(image)
image = image.resize((image.width//downsampling, image.height //
downsampling), resample=Image.Resampling.NEAREST)
image = np.array(image)
image = image.astype(np.float32) / 255.0
image = image[None].transpose(0, 3, 1, 2)
image = torch.from_numpy(image)
return image.to(self.device)
image = self._fit_image(image, (width, height)) if fit else self._squeeze_image(image)
return image
# The mask is expected to have the region to be inpainted
# with alpha transparency. It converts it into a black/white
@ -912,7 +891,6 @@ class Generate:
mask = ImageOps.invert(mask)
return mask
# TODO: The latter part of this method repeats code from _create_init_mask()
def _txt2mask(self, image:Image, text_mask:list, width, height, fit=True) -> Image:
prompt = text_mask[0]
confidence_level = text_mask[1] if len(text_mask)>1 else 0.5
@ -922,18 +900,8 @@ class Generate:
segmented = self.txt2mask.segment(image, prompt)
mask = segmented.to_mask(float(confidence_level))
mask = mask.convert('RGB')
# now we adjust the size
if fit:
mask = self._fit_image(mask, (width, height))
else:
mask = self._squeeze_image(mask)
mask = mask.resize((mask.width//downsampling, mask.height //
downsampling), resample=Image.Resampling.NEAREST)
mask = np.array(mask)
mask = mask.astype(np.float32) / 255.0
mask = mask[None].transpose(0, 3, 1, 2)
mask = torch.from_numpy(mask)
return mask.to(self.device)
mask = self._fit_image(mask, (width, height)) if fit else self._squeeze_image(mask)
return mask
def _has_transparency(self, image):
if image.info.get("transparency", None) is not None:

20
ldm/invoke/generator/img2img.py
View File

@ -4,9 +4,12 @@ ldm.invoke.generator.img2img descends from ldm.invoke.generator
import torch
import numpy as np
from ldm.invoke.devices import choose_autocast
from ldm.invoke.generator.base import Generator
from ldm.models.diffusion.ddim import DDIMSampler
import PIL
from torch import Tensor
from PIL import Image
from ldm.invoke.devices import choose_autocast
from ldm.invoke.generator.base import Generator
from ldm.models.diffusion.ddim import DDIMSampler
class Img2Img(Generator):
def __init__(self, model, precision):
@ -25,6 +28,9 @@ class Img2Img(Generator):
ddim_num_steps=steps, ddim_eta=ddim_eta, verbose=False
)
if isinstance(init_image, PIL.Image.Image):
init_image = self._image_to_tensor(init_image)
scope = choose_autocast(self.precision)
with scope(self.model.device.type):
self.init_latent = self.model.get_first_stage_encoding(
@ -68,3 +74,11 @@ class Img2Img(Generator):
shape = init_latent.shape
x = (1-self.perlin)*x + self.perlin*self.get_perlin_noise(shape[3], shape[2])
return x
def _image_to_tensor(self, image:Image, normalize:bool=True)->Tensor:
image = np.array(image).astype(np.float32) / 255.0
image = image[None].transpose(0, 3, 1, 2)
image = torch.from_numpy(image)
if normalize:
image = 2.0 * image - 1.0
return image.to(self.model.device)

96
ldm/invoke/generator/inpaint.py
View File

@ -6,6 +6,7 @@ import torch
import torchvision.transforms as T
import numpy as np
import cv2 as cv
import PIL
from PIL import Image, ImageFilter
from skimage.exposure.histogram_matching import match_histograms
from einops import rearrange, repeat
@ -13,16 +14,19 @@ from ldm.invoke.devices import choose_autocast
from ldm.invoke.generator.img2img import Img2Img
from ldm.models.diffusion.ddim import DDIMSampler
from ldm.models.diffusion.ksampler import KSampler
from ldm.invoke.generator.base import downsampling
class Inpaint(Img2Img):
def __init__(self, model, precision):
self.init_latent = None
self.pil_image = None
self.pil_mask = None
self.mask_blur_radius = 0
super().__init__(model, precision)
@torch.no_grad()
def get_make_image(self,prompt,sampler,steps,cfg_scale,ddim_eta,
conditioning,init_image,mask_image,strength,
pil_image: Image.Image, pil_mask: Image.Image,
mask_blur_radius: int = 8,
step_callback=None,inpaint_replace=False, **kwargs):
"""
@ -31,17 +35,21 @@ class Inpaint(Img2Img):
the time you call it. kwargs are 'init_latent' and 'strength'
"""
# Get the alpha channel of the mask
pil_init_mask = pil_mask.getchannel('A')
pil_init_image = pil_image.convert('RGBA') # Add an alpha channel if one doesn't exist
if isinstance(init_image, PIL.Image.Image):
self.pil_image = init_image
init_image = self._image_to_tensor(init_image)
# Build an image with only visible pixels from source to use as reference for color-matching.
# Note that this doesn't use the mask, which would exclude some source image pixels from the
# histogram and cause slight color changes.
init_rgb_pixels = np.asarray(pil_image.convert('RGB'), dtype=np.uint8).reshape(pil_image.width * pil_image.height, 3)
init_a_pixels = np.asarray(pil_init_image.getchannel('A'), dtype=np.uint8).reshape(pil_init_mask.width * pil_init_mask.height)
init_rgb_pixels = init_rgb_pixels[init_a_pixels > 0]
init_rgb_pixels = init_rgb_pixels.reshape(1, init_rgb_pixels.shape[0], init_rgb_pixels.shape[1]) # Filter to just pixels that have any alpha, this is now our histogram
if isinstance(mask_image, PIL.Image.Image):
self.pil_mask = mask_image
mask_image = mask_image.resize(
(
mask_image.width // downsampling,
mask_image.height // downsampling
),
resample=Image.Resampling.NEAREST
)
mask_image = self._image_to_tensor(mask_image,normalize=False)
self.mask_blur_radius = mask_blur_radius
# klms samplers not supported yet, so ignore previous sampler
if isinstance(sampler,KSampler):
@ -96,30 +104,46 @@ class Inpaint(Img2Img):
mask = mask_image,
init_latent = self.init_latent
)
# Get PIL result
gen_result = self.sample_to_image(samples).convert('RGB')
# Get numpy version
np_gen_result = np.asarray(gen_result, dtype=np.uint8)
# Color correct
np_matched_result = match_histograms(np_gen_result, init_rgb_pixels, channel_axis=-1)
matched_result = Image.fromarray(np_matched_result, mode='RGB')
# Blur the mask out (into init image) by specified amount
if mask_blur_radius > 0:
nm = np.asarray(pil_init_mask, dtype=np.uint8)
nmd = cv.dilate(nm, kernel=np.ones((3,3), dtype=np.uint8), iterations=int(mask_blur_radius / 2))
pmd = Image.fromarray(nmd, mode='L')
blurred_init_mask = pmd.filter(ImageFilter.BoxBlur(mask_blur_radius))
else:
blurred_init_mask = pil_init_mask
# Paste original on color-corrected generation (using blurred mask)
matched_result.paste(pil_image, (0,0), mask = blurred_init_mask)
return matched_result
return self.sample_to_image(samples)
return make_image
def sample_to_image(self, samples)->Image:
gen_result = super().sample_to_image(samples).convert('RGB')
pil_mask = self.pil_mask
pil_image = self.pil_image
mask_blur_radius = self.mask_blur_radius
# Get the original alpha channel of the mask
pil_init_mask = pil_mask.convert('L')
pil_init_image = pil_image.convert('RGBA') # Add an alpha channel if one doesn't exist
# Build an image with only visible pixels from source to use as reference for color-matching.
# Note that this doesn't use the mask, which would exclude some source image pixels from the
# histogram and cause slight color changes.
init_rgb_pixels = np.asarray(pil_image.convert('RGB'), dtype=np.uint8).reshape(pil_image.width * pil_image.height, 3)
init_a_pixels = np.asarray(pil_init_image.getchannel('A'), dtype=np.uint8).reshape(pil_init_mask.width * pil_init_mask.height)
init_rgb_pixels = init_rgb_pixels[init_a_pixels > 0]
init_rgb_pixels = init_rgb_pixels.reshape(1, init_rgb_pixels.shape[0], init_rgb_pixels.shape[1]) # Filter to just pixels that have any alpha, this is now our histogram
# Get numpy version
np_gen_result = np.asarray(gen_result, dtype=np.uint8)
# Color correct
np_matched_result = match_histograms(np_gen_result, init_rgb_pixels, channel_axis=-1)
matched_result = Image.fromarray(np_matched_result, mode='RGB')
# Blur the mask out (into init image) by specified amount
if mask_blur_radius > 0:
nm = np.asarray(pil_init_mask, dtype=np.uint8)
nmd = cv.dilate(nm, kernel=np.ones((3,3), dtype=np.uint8), iterations=int(mask_blur_radius / 2))
pmd = Image.fromarray(nmd, mode='L')
blurred_init_mask = pmd.filter(ImageFilter.BoxBlur(mask_blur_radius))
else:
blurred_init_mask = pil_init_mask
# Paste original on color-corrected generation (using blurred mask)
matched_result.paste(pil_image, (0,0), mask = blurred_init_mask)
return matched_result