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skymagic.py
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skymagic.py
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import numpy as np
import matplotlib.pyplot as plt
import cv2
import os
import glob
import argparse
from networks import *
from skyboxengine import *
import utils
import torch
# Decide which device we want to run on
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
parser = argparse.ArgumentParser(description='SKYAR')
parser.add_argument('--path', type=str, default='./config/config-canyon-jupiter.json', metavar='str',
help='configurations')
class SkyFilter():
def __init__(self, args):
self.ckptdir = args.ckptdir
self.datadir = args.datadir
self.input_mode = args.input_mode
self.in_size_w, self.in_size_h = args.in_size_w, args.in_size_h
self.out_size_w, self.out_size_h = args.out_size_w, args.out_size_h
self.skyboxengine = SkyBox(args)
self.net_G = define_G(input_nc=3, output_nc=1, ngf=64, netG=args.net_G).to(device)
self.load_model()
self.video_writer = cv2.VideoWriter('demo.mp4', cv2.VideoWriter_fourcc(*'MP4V'),
20.0, (args.out_size_w, args.out_size_h))
self.video_writer_cat = cv2.VideoWriter('demo-cat.mp4', cv2.VideoWriter_fourcc(*'MP4V'),
20.0, (2*args.out_size_w, args.out_size_h))
if args.save_jpgs and os.path.exists(args.output_dir) is False:
os.mkdir(args.output_dir)
self.save_jpgs = args.save_jpgs
def load_model(self):
print('loading the best checkpoint...')
checkpoint = torch.load(os.path.join(self.ckptdir, 'best_ckpt.pt'),
map_location=None if torch.cuda.is_available() else device)
# checkpoint = torch.load(os.path.join(self.ckptdir, 'last_ckpt.pt'))
self.net_G.load_state_dict(checkpoint['model_G_state_dict'])
self.net_G.to(device)
self.net_G.eval()
def write_video(self, img_HD, syneth):
frame = np.array(255.0 * syneth[:, :, ::-1], dtype=np.uint8)
self.video_writer.write(frame)
frame_cat = np.concatenate([img_HD, syneth], axis=1)
frame_cat = np.array(255.0 * frame_cat[:, :, ::-1], dtype=np.uint8)
self.video_writer_cat.write(frame_cat)
cv2.imshow('frame_cat', frame_cat)
cv2.waitKey(1)
def synthesize(self, img_HD, img_HD_prev):
h, w, c = img_HD.shape
img = cv2.resize(img_HD, (self.in_size_w, self.in_size_h))
img = np.array(img, dtype=np.float32)
img = torch.tensor(img).permute([2, 0, 1]).unsqueeze(0)
with torch.no_grad():
G_pred = self.net_G(img.to(device))
G_pred = torch.nn.functional.interpolate(G_pred, (h, w), mode='bicubic', align_corners=False)
G_pred = G_pred[0, :].permute([1, 2, 0])
G_pred = torch.cat([G_pred, G_pred, G_pred], dim=-1)
G_pred = np.array(G_pred.detach().cpu())
G_pred = np.clip(G_pred, a_max=1.0, a_min=0.0)
skymask = self.skyboxengine.skymask_refinement(G_pred, img_HD)
syneth = self.skyboxengine.skyblend(img_HD, img_HD_prev, skymask)
return syneth, G_pred, skymask
def cvtcolor_and_resize(self, img_HD):
img_HD = cv2.cvtColor(img_HD, cv2.COLOR_BGR2RGB)
img_HD = np.array(img_HD / 255., dtype=np.float32)
img_HD = cv2.resize(img_HD, (self.out_size_w, self.out_size_h))
return img_HD
def run_imgseq(self):
print('running evaluation...')
img_names = os.listdir(self.datadir)
img_HD_prev = None
for idx in range(len(img_names)):
this_dir = os.path.join(self.datadir, img_names[idx])
img_HD = cv2.imread(this_dir, cv2.IMREAD_COLOR)
img_HD = self.cvtcolor_and_resize(img_HD)
if img_HD_prev is None:
img_HD_prev = img_HD
syneth, G_pred, skymask = self.synthesize(img_HD, img_HD_prev)
if self.save_jpgs:
fpath = os.path.join(args.output_dir, img_names[idx])
plt.imsave(fpath[:-4] + '_input.jpg', img_HD)
plt.imsave(fpath[:-4] + 'coarse_skymask.jpg', G_pred)
plt.imsave(fpath[:-4] + 'refined_skymask.jpg', skymask)
plt.imsave(fpath[:-4] + 'syneth.jpg', syneth.clip(min=0, max=1))
self.write_video(img_HD, syneth)
print('processing: %d / %d ...' % (idx, len(img_names)))
img_HD_prev = img_HD
def run_video(self):
print('running evaluation...')
cap = cv2.VideoCapture(self.datadir)
m_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
img_HD_prev = None
idx = 0
while (1):
ret, frame = cap.read()
if ret:
img_HD = self.cvtcolor_and_resize(frame)
if img_HD_prev is None:
img_HD_prev = img_HD
syneth, G_pred, skymask = self.synthesize(img_HD, img_HD_prev)
if self.save_jpgs:
fpath = os.path.join(args.output_dir, str(idx)+'.jpg')
plt.imsave(fpath[:-4] + '_input.jpg', img_HD)
plt.imsave(fpath[:-4] + '_coarse_skymask.jpg', G_pred)
plt.imsave(fpath[:-4] + '_refined_skymask.jpg', skymask)
plt.imsave(fpath[:-4] + '_syneth.jpg', syneth.clip(min=0, max=1))
self.write_video(img_HD, syneth)
print('processing: %d / %d ...' % (idx, m_frames))
img_HD_prev = img_HD
idx += 1
else: # if reach the last frame
break
def run(self):
if self.input_mode == 'seq':
self.run_imgseq()
elif self.input_mode == 'video':
self.run_video()
else:
print('wrong input_mode, select one in [seq, video')
exit()
if __name__ == '__main__':
config_path = parser.parse_args().path
args = utils.parse_config(config_path)
sf = SkyFilter(args)
sf.run()