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add outcrop postprocessor

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This commit is contained in:
Lincoln Stein
2022-10-03 14:39:58 -04:00
parent 0f9bff66bc
commit 609983ffa8
6 changed files with 198 additions and 35 deletions
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29
ldm/dream/args.py
View File

@ -213,6 +213,9 @@ class Args(object):
if a['gfpgan_strength']:
switches.append(f'-G {a["gfpgan_strength"]}')
if a['outcrop']:
switches.append(f'-c {" ".join([str(u) for u in a["outcrop"]])}')
# esrgan-specific parameters
if a['upscale']:
switches.append(f'-U {" ".join([str(u) for u in a["upscale"]])}')
@ -639,6 +642,14 @@ class Args(object):
metavar=('direction', 'pixels'),
help='Direction to extend the given image (left|right|top|bottom). If a distance pixel value is not specified it defaults to half the image size'
)
img2img_group.add_argument(
'-c',
'--outcrop',
nargs='+',
type=str,
metavar=('direction:pixels'),
help='Outcrop the image "direction:pixels direction:pixels..." where direction is (top|left|bottom|right)'
)
postprocessing_group.add_argument(
'-ft',
'--facetool',
@ -736,24 +747,12 @@ def metadata_dumps(opt,
'app_version' : APP_VERSION,
}
# add some RFC266 fields that are generated internally, and not as
# user args
# # add some RFC266 fields that are generated internally, and not as
# # user args
image_dict = opt.to_dict(
postprocessing=postprocessing
postprocessing=postprocessing
)
# 'postprocessing' is either null or an array of postprocessing metadatal
if postprocessing:
# TODO: This is just a hack until postprocessing pipeline work completed
image_dict['postprocessing'] = []
if image_dict['gfpgan_strength'] and image_dict['gfpgan_strength'] > 0:
image_dict['postprocessing'].append('GFPGAN (not RFC compliant)')
if image_dict['upscale'] and image_dict['upscale'][0] > 0:
image_dict['postprocessing'].append('ESRGAN (not RFC compliant)')
else:
image_dict['postprocessing'] = None
# remove any image keys not mentioned in RFC #266
rfc266_img_fields = ['type','postprocessing','sampler','prompt','seed','variations','steps',
'cfg_scale','threshold','perlin','step_number','width','height','extra','strength']

1
ldm/dream/generator/img2img.py
View File

@ -21,6 +21,7 @@ class Img2Img(Generator):
"""
self.perlin = perlin
print(f'DEBUG: init_image = {init_image}')
sampler.make_schedule(
ddim_num_steps=steps, ddim_eta=ddim_eta, verbose=False
)

7
ldm/dream/pngwriter.py
View File

@ -37,7 +37,7 @@ class PngWriter:
path = os.path.join(self.outdir, name)
info = PngImagePlugin.PngInfo()
info.add_text('Dream', dream_prompt)
if metadata: # TODO: merge command line app's method of writing metadata and always just write metadata
if metadata:
info.add_text('sd-metadata', json.dumps(metadata))
image.save(path, 'PNG', pnginfo=info)
return path
@ -61,3 +61,8 @@ def retrieve_metadata(img_path):
dream_prompt = im.text.get('Dream', '')
return {'sd-metadata': json.loads(md), 'Dream': dream_prompt}
def write_metadata(img_path:str, meta:dict):
im = Image.open(img_path)
info = PngImagePlugin.PngInfo()
info.add_text('sd-metadata', json.dumps(meta))
im.save(img_path,'PNG',pnginfo=info)

109
ldm/dream/restoration/outcrop.py Normal file
View File

@ -0,0 +1,109 @@
import warnings
import math
from ldm.dream.conditioning import get_uc_and_c
from PIL import Image, ImageFilter
class Outcrop():
def __init__(
self,
image,
generator, # current generator object
):
self.image = image
self.generator = generator
def extend(
self,
extents:dict,
opt,
image_callback = None,
prefix = None
):
extended_image = self._extend_all(extents)
# switch samplers temporarily
curr_sampler = self.generator.sampler
self.generator.sampler_name = opt.sampler_name
self.generator._set_sampler()
def wrapped_callback(img,seed,**kwargs):
image_callback(img,opt.seed,use_prefix=prefix,**kwargs)
result= self.generator.prompt2image(
opt.prompt,
sampler = self.generator.sampler,
steps = opt.steps,
cfg_scale = opt.cfg_scale,
ddim_eta = self.generator.ddim_eta,
width = extended_image.width,
height = extended_image.height,
init_img = extended_image,
strength = opt.strength,
image_callback = wrapped_callback,
)
# swap sampler back
self.generator.sampler = curr_sampler
return result
def _extend_all(
self,
extents:dict,
) -> Image:
'''
Extend the image in direction ('top','bottom','left','right') by
the indicated value. The image canvas is extended, and the empty
rectangular section will be filled with a blurred copy of the
adjacent image.
'''
image = self.image
for direction in extents:
assert direction in ['top', 'left', 'bottom', 'right'],'Direction must be one of "top", "left", "bottom", "right"'
pixels = extents[direction]
# round pixels up to the nearest 64
pixels = math.ceil(pixels/64) * 64
print(f'>> extending image {direction}ward by {pixels} pixels')
image = self._rotate(image,direction)
image = self._extend(image,pixels)
image = self._rotate(image,direction,reverse=True)
return image
def _rotate(self,image:Image,direction:str,reverse=False) -> Image:
'''
Rotates image so that the area to extend is always at the top top.
Simplifies logic later. The reverse argument, if true, will undo the
previous transpose.
'''
transposes = {
'right': ['ROTATE_90','ROTATE_270'],
'bottom': ['ROTATE_180','ROTATE_180'],
'left': ['ROTATE_270','ROTATE_90']
}
if direction not in transposes:
return image
transpose = transposes[direction][1 if reverse else 0]
return image.transpose(Image.Transpose.__dict__[transpose])
def _extend(self,image:Image,pixels:int)-> Image:
extended_img = Image.new('RGBA',(image.width,image.height+pixels))
# first paste places old image at top of extended image, stretch
# it, and applies a gaussian blur to it
# take the top half region, stretch and paste it
top_slice = image.crop(box=(0,0,image.width,pixels//2))
top_slice = top_slice.resize((image.width,pixels))
extended_img.paste(top_slice,box=(0,0))
# second paste creates a copy of the image displaced pixels downward;
# The overall effect is to create a blurred duplicate of the top portion of
# the image.
extended_img.paste(image,box=(0,pixels))
extended_img = extended_img.filter(filter=ImageFilter.GaussianBlur(radius=pixels//2))
extended_img.paste(image,box=(0,pixels))
# now make the top part transparent to use as a mask
alpha = extended_img.getchannel('A')
alpha.paste(0,(0,0,extended_img.width,pixels*2))
extended_img.putalpha(alpha)
return extended_img

44
ldm/generate.py
View File

@ -499,6 +499,7 @@ class Generate:
codeformer_fidelity = 0.75,
upscale = None,
out_direction = None,
outcrop = [],
save_original = True, # to get new name
callback = None,
opt = None,
@ -527,8 +528,13 @@ class Generate:
# face fixers and esrgan take an Image, but embiggen takes a path
image = Image.open(image_path)
# Note that we need to adopt a uniform API for the postprocessors.
# This is completely ad hoc ATCM
# used by multiple postfixers
uc, c = get_uc_and_c(
prompt, model =self.model,
skip_normalize=opt.skip_normalize,
log_tokens =opt.log_tokenization
)
if tool in ('gfpgan','codeformer','upscale'):
if tool == 'gfpgan':
facetool = 'gfpgan'
@ -548,14 +554,25 @@ class Generate:
prefix = prefix,
)
elif tool == 'outcrop':
from ldm.dream.restoration.outcrop import Outcrop
extend_instructions = {}
for direction,pixels in _pairwise(opt.outcrop):
extend_instructions[direction]=int(pixels)
generator = Outcrop(
image,
self,
)
return generator.extend(
extend_instructions,
args,
image_callback = callback,
prefix = prefix,
)
elif tool == 'embiggen':
# fetch the metadata from the image
generator = self._make_embiggen()
uc, c = get_uc_and_c(
prompt, model =self.model,
skip_normalize=opt.skip_normalize,
log_tokens =opt.log_tokenization
)
opt.strength = 0.40
print(f'>> Setting img2img strength to {opt.strength} for happy embiggening')
# embiggen takes a image path (sigh)
@ -586,16 +603,13 @@ class Generate:
steps = opt.steps,
cfg_scale = opt.cfg_scale,
ddim_eta = self.ddim_eta,
conditioning= get_uc_and_c(
oldargs.prompt, model =self.model,
skip_normalize=opt.skip_normalize,
log_tokens =opt.log_tokenization
),
conditioning= (uc,c),
width = opt.width,
height = opt.height,
init_img = image_path, # not the Image! (sigh)
strength = opt.strength,
image_callback = callback,
prefix = prefix,
)
elif tool is None:
print(f'* please provide at least one postprocessing option, such as -G or -U')
@ -968,7 +982,6 @@ class Generate:
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)
@ -1088,3 +1101,8 @@ class Generate:
image = self.sample_to_image(img)
image.save(os.path.join(path,f'{counter:03}.png'),'PNG')
return callback
def _pairwise(iterable):
"s -> (s0, s1), (s2, s3), (s4, s5), ..."
a = iter(iterable)
return zip(a, a)