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cat.py
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cat.py
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import cv2
import numpy as np
import torch
import torch.nn as nn
import torch.nn.functional as F
import random
import time
import os
from LDR import *
from tone import *
from genStroke_origin import *
from drawpatch import rotate
from tools import *
from ETF.edge_tangent_flow import *
from deblue import deblue
from quicksort import *
# args
input_path = './input/cat_up.png'
output_path = './output'
np.random.seed(1)
n = 6 # Quantization order
period = 4 # line period
direction = 10 # num of dir
Freq = 100 # save every（freq) lines drawn
deepen = 1 # for edge
transTone = False # for Tone8
kernel_radius = 3 # for ETF
iter_time = 15 # for ETF
background_dir = 45 # for ETF
CLAHE = True
edge_CLAHE = True
draw_new = True
random_order = False
ETF_order = True
process_visible = True
if __name__ == '__main__':
file_name = os.path.basename(input_path)
file_name = file_name.split('.')[0]
print(file_name)
output_path = output_path+"/"+file_name
if not os.path.exists(output_path):
os.makedirs(output_path)
os.makedirs(output_path+"/mask")
os.makedirs(output_path+"/process")
####### ETF #######
time_start=time.time()
ETF_filter = ETF(input_path=input_path, output_path=output_path+'/mask',\
dir_num=direction, kernel_radius=kernel_radius, iter_time=iter_time, background_dir=background_dir)
ETF_filter.forward()
print('ETF done')
input_img = cv2.imread(input_path, cv2.IMREAD_GRAYSCALE)
(h0,w0) = input_img.shape
cv2.imwrite(output_path + "/input_gray.jpg", input_img)
# if h0>w0:
# input_img = cv2.resize(input_img,(int(256*w0/h0),256))
# else:
# input_img = cv2.resize(input_img,(256,int(256*h0/w0)))
# (h0,w0) = input_img.shape
if transTone == True:
input_img = transferTone(input_img)
now_ = np.uint8(np.ones((h0,w0)))*255
step = 0
if draw_new==True:
time_start=time.time()
stroke_sequence=[]
stroke_temp={'angle':None, 'grayscale':None, 'row':None, 'begin':None, 'end':None}
for dirs in range(direction):
angle = -90+dirs*180/direction
print('angle:', angle)
stroke_temp['angle'] = angle
img,_ = rotate(input_img, -angle)
############ Adjust Histogram ############
if CLAHE==True:
img = HistogramEqualization(img)
# cv2.imshow('HistogramEqualization', res)
# cv2.waitKey(0)
# cv2.imwrite(output_path + "/HistogramEqualization.png", res)
print('HistogramEqualization done')
########### gredient #######
img_pad = cv2.copyMakeBorder(img, 2*period, 2*period, 2*period, 2*period, cv2.BORDER_REPLICATE)
img_normal = cv2.normalize(img_pad.astype("float32"), None, 0.0, 1.0, cv2.NORM_MINMAX)
x_der = cv2.Sobel(img_normal, cv2.CV_32FC1, 1, 0, ksize=5)
y_der = cv2.Sobel(img_normal, cv2.CV_32FC1, 0, 1, ksize=5)
x_der = torch.from_numpy(x_der) + 1e-12
y_der = torch.from_numpy(y_der) + 1e-12
gradient_magnitude = torch.sqrt(x_der**2.0 + y_der**2.0)
gradient_norm = gradient_magnitude/gradient_magnitude.max()
############ Quantization ############
ldr = LDR(img, n)
# cv2.imshow('Quantization', ldr)
# cv2.waitKey(0)
cv2.imwrite(output_path + "/Quantization.png", ldr)
# LDR_single(ldr,n,output_path) # debug
############ Cumulate ############
LDR_single_add(ldr,n,output_path)
print('Quantization done')
# get tone
(h,w) = ldr.shape
canvas = Gassian((h+4*period,w+4*period), mean=250, var = 3)
for j in range(n):
# print('tone:',j)
# distribution = ChooseDistribution(period=period,Grayscale=j*256/n)
stroke_temp['grayscale'] = j*256/n
mask = cv2.imread(output_path + '/mask/mask{}.png'.format(j),cv2.IMREAD_GRAYSCALE)/255
dir_mask = cv2.imread(output_path + '/mask/dir_mask{}.png'.format(dirs),cv2.IMREAD_GRAYSCALE)
# if angle==0:
# dir_mask[::] = 255
dir_mask,_ = rotate(dir_mask, -angle, pad_color=0)
dir_mask[dir_mask<128]=0
dir_mask[dir_mask>127]=1
distensce = Gassian((1,int(h/period)+4), mean = period, var = 1)
distensce = np.uint8(np.round(np.clip(distensce, period*0.8, period*1.25)))
raw = -int(period/2)
for i in np.squeeze(distensce).tolist():
if raw < h:
y = raw + 2*period # y < h+2*period
raw += i
for interval in get_start_end(mask[y-2*period]*dir_mask[y-2*period]):
begin = interval[0]
end = interval[1]
# length = end - begin
begin -= 2*period
end += 2*period
length = end - begin
stroke_temp['begin'] = begin
stroke_temp['end'] = end
stroke_temp['row'] = y-int(period/2)
#print(gradient_norm[y,interval[0]+2*period:interval[1]+2*period])
stroke_temp['importance'] = (255-stroke_temp['grayscale'])*torch.sum(gradient_norm[y:y+period,interval[0]+2*period:interval[1]+2*period]).numpy()
stroke_sequence.append(stroke_temp.copy())
# newline = Getline(distribution=distribution, length=length)
# if length<1000 or begin == -2*period or end == w-1+2*period:
# temp = canvas[y-int(period/2):y-int(period/2)+2*period,2*period+begin:2*period+end]
# m = np.minimum(temp, newline[:,:temp.shape[1]])
# canvas[y-int(period/2):y-int(period/2)+2*period,2*period+begin:2*period+end] = m
# else:
# temp = canvas[y-int(period/2):y-int(period/2)+2*period,2*period+begin-2*period:2*period+end+2*period]
# m = np.minimum(temp, newline)
# canvas[y-int(period/2):y-int(period/2)+2*period,2*period+begin-2*period:2*period+end+2*period] = m
# if step % Freq == 0:
# if step > Freq: # not first time
# before = cv2.imread(output_path + "/process/{0:04d}.png".format(int(step/Freq)-1), cv2.IMREAD_GRAYSCALE)
# now,_ = rotate(canvas[2*period:2*period+h,2*period:2*period+w], angle)
# (H,W) = now.shape
# now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
# now = np.minimum(before,now)
# else: # first time to save
# now,_ = rotate(canvas[2*period:2*period+h,2*period:2*period+w], angle)
# (H,W) = now.shape
# now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
# cv2.imwrite(output_path + "/process/{0:04d}.png".format(int(step/Freq)), now)
# # cv2.imshow('step', canvas)
# # cv2.waitKey(0)
# now,_ = rotate(canvas[2*period:2*period+h,2*period:2*period+w], angle)
# (H,W) = now.shape
# now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
# now = np.minimum(now,now_)
# step += 1
# cv2.imshow('step', now_)
# cv2.waitKey(1)
# now_ = now
# now,_ = rotate(canvas[2*period:2*period+h,2*period:2*period+w], angle)
# (H,W) = now.shape
# now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
# cv2.imwrite(output_path + "/pro/{}_{}.png".format(dirs,j), now)
# now,_ = rotate(canvas[2*period:2*period+h,2*period:2*period+w], angle)
# (H,W) = now.shape
# now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
# cv2.imwrite(output_path + "/{:.1f}.png".format(angle), now)
# cv2.destroyAllWindows()
time_end=time.time()
print('total time',time_end-time_start)
print('stoke number',len(stroke_sequence))
# cv2.imwrite(output_path + "/draw.png", now_)
# cv2.imshow('draw', now_)
# cv2.waitKey(0)
if random_order == True:
random.shuffle(stroke_sequence)
if ETF_order == True:
random.shuffle(stroke_sequence)
quickSort(stroke_sequence,0,len(stroke_sequence)-1)
result = Gassian((h0,w0), mean=250, var = 3)
canvases = []
for dirs in range(direction):
angle = -90+dirs*180/direction
canvas,_ = rotate(result, -angle)
# (h,w) = canvas.shape
canvas = np.pad(canvas, pad_width=2*period, mode='constant', constant_values=(255,255))
canvases.append(canvas)
for stroke_temp in stroke_sequence:
angle = stroke_temp['angle']
dirs = int((angle+90)*direction/180)
grayscale = stroke_temp['grayscale']
distribution = ChooseDistribution(period=period,Grayscale=grayscale)
row = stroke_temp['row']
begin = stroke_temp['begin']
end = stroke_temp['end']
length = end - begin
newline = Getline(distribution=distribution, length=length)
canvas = canvases[dirs]
if length<1000 or begin == -2*period or end == w-1+2*period:
temp = canvas[row:row+2*period,2*period+begin:2*period+end]
m = np.minimum(temp, newline[:,:temp.shape[1]])
canvas[row:row+2*period,2*period+begin:2*period+end] = m
# else:
# temp = canvas[row:row+2*period,2*period+begin-2*period:2*period+end+2*period]
# m = np.minimum(temp, newline)
# canvas[row:row+2*period,2*period+begin-2*period:2*period+end+2*period] = m
now,_ = rotate(canvas[2*period:-2*period,2*period:-2*period], angle)
(H,W) = now.shape
now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
result = np.minimum(now,result)
if process_visible == True:
cv2.imshow('step', result)
cv2.waitKey(1)
step += 1
if step % Freq == 0:
# if step > Freq: # not first time
# before = cv2.imread(output_path + "/process/{0:04d}.png".format(int(step/Freq)-1), cv2.IMREAD_GRAYSCALE)
# now,_ = rotate(canvas[2*period:2*period+h,2*period:2*period+w], angle)
# (H,W) = now.shape
# now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
# now = np.minimum(before,now)
# else: # first time to save
# now,_ = rotate(canvas[2*period:2*period+h,2*period:2*period+w], angle)
# (H,W) = now.shape
# now = now[int((H-h0)/2):int((H-h0)/2)+h0, int((W-w0)/2):int((W-w0)/2)+w0]
cv2.imwrite(output_path + "/process/{0:04d}.jpg".format(int(step/Freq)), result)
# cv2.imshow('step', canvas)
# cv2.waitKey(0)
if step % Freq != 0:
step = int(step/Freq)+1
cv2.imwrite(output_path + "/process/{0:04d}.jpg".format(step), result)
cv2.destroyAllWindows()
time_end=time.time()
print('total time',time_end-time_start)
print('stoke number',len(stroke_sequence))
cv2.imwrite(output_path + '/draw.jpg', result)
############ gen edge ###########
# device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
# pc = PencilDraw(device=device, gammaS=1)
# pc(input_path)
# edge = cv2.imread('output/Edge.png', cv2.IMREAD_GRAYSCALE)
edge = genStroke(input_img,18)
edge = np.power(edge, deepen)
edge = np.uint8(edge*255)
if edge_CLAHE==True:
edge = HistogramEqualization(edge)
cv2.imwrite(output_path + '/edge.jpg', edge)
cv2.imshow("edge",edge)
############# merge #############
edge = np.float32(edge)
now_ = cv2.imread(output_path + "/draw.jpg", cv2.IMREAD_GRAYSCALE)
result = res_cross= np.float32(now_)
result[1:,1:] = np.uint8(edge[:-1,:-1] * res_cross[1:,1:]/255)
result[0] = np.uint8(edge[0] * res_cross[0]/255)
result[:,0] = np.uint8(edge[:,0] * res_cross[:,0]/255)
result = edge*res_cross/255
result=np.uint8(result)
cv2.imwrite(output_path + '/result.jpg', result)
# cv2.imwrite(output_path + "/process/{0:04d}.png".format(step+1), result)
cv2.imshow("result",result)
# deblue
deblue(result, output_path)
# RGB
img_rgb_original = cv2.imread(input_path, cv2.IMREAD_COLOR)
cv2.imwrite(output_path + "/input.jpg", img_rgb_original)
img_yuv = cv2.cvtColor(img_rgb_original, cv2.COLOR_BGR2YUV)
img_yuv[:,:,0] = result
img_rgb = cv2.cvtColor(img_yuv, cv2.COLOR_YUV2BGR)
cv2.imshow("RGB",img_rgb)
cv2.waitKey(0)
cv2.imwrite(output_path + "/result_RGB.jpg",img_rgb)