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video_water_mark_storyblocks.py
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video_water_mark_storyblocks.py
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import cv2 as cv
import numpy as np
import os
import time
def get_alpha_W_black():
video = "videos/storyblocks.mp4"
cap = cv.VideoCapture(video)
res, waterpic = cap.read()
W = (waterpic>25)*255
alpha_0 = 1.1* waterpic[W!=0].mean()/255
alpha = np.ones(W.shape) * alpha_0
alpha[W==0]=0
print(waterpic.max(), waterpic.min(), alpha_0)
# cv.imshow("W0", W.astype(float))
box = np.nonzero(W)
box = [min(box[0]),min(box[1]),max(box[0]),max(box[1])]
box[0]-=5
box[1]-=5
box[2]+=5
box[3]+=5
print(box)
return alpha, W, box
def blur_mask(alpha, W, box):
index = 0
sel = set(range(1,1000,50))
video = "/database/水印视频/storyblocks/多旋翼无人机/aerial-rc-helicopter_ey-9zj5ux__PM.mp4"
video = "/database/水印视频/storyblocks/多旋翼无人机/videoblocks-slow-motion-drone-takeoff_b3sv8vzub__SB_PM.mp4"
video = "/database/水印视频/storyblocks/运输机旅客机/4k-air-berlin-boeing-737-arriving-madeira-from-seascape_E1Ni7uQSe__SB_PM.mp4"
cap = cv.VideoCapture(video)
if True:
difs = []
while True:
result, frame = cap.read()
if not result: break
index += 1
# if index in sel:
I = (frame.astype(float) - alpha * W)/(1-alpha)
I[I<0] = 0
I = I.astype(np.uint8)
fI = I.copy()
fI[box[0]:box[2],box[1]:box[3],:] = cv.medianBlur(fI[box[0]:box[2],box[1]:box[3],:], 5)
oboximage = frame[box[0]:box[2],box[1]:box[3],:]
iboximage = I[box[0]:box[2],box[1]:box[3],:]
fboximage = fI[box[0]:box[2],box[1]:box[3],:]
dif = fboximage.astype(float)-iboximage.astype(float)
dif[dif<30]=0
difs.append(dif)
# cv.rectangle(I,(box[1],box[0]),(box[3],box[2]),(0, 255, 255),1,8)
# cv.imshow("diffenence", np.vstack([oboximage,iboximage,fboximage,
# dif.astype(np.uint8),np.median(np.array(difs),axis=0).astype(np.uint8)]))
# cv.waitKey(0)
# if index==100:break
np.save("med.npy", np.array(difs))
# exit()
difs = np.load("med.npy")
med = np.median(difs,axis=0).astype(np.uint8)
tmp = med.max(axis=2)
med[:,:,0] = tmp
med[:,:,1] = tmp
med[:,:,2] = tmp
bg = np.zeros(W.shape)
bg[box[0]:box[2],box[1]:box[3],:] = med
# cv.imshow("dif", med)
# cv.imshow("bg", bg)
W2 = W.copy()
W2[bg!=0] = 0
alpha2 = alpha.copy()
alpha2[bg!=0] = 0.1*alpha.max()
return alpha2,W2,bg
def process_video_demo(alpha, W, alpha2, W2, bg, box):
video = "/database/水印视频/storyblocks/多旋翼无人机/aerial-rc-helicopter_ey-9zj5ux__PM.mp4"
video = "/database/水印视频/storyblocks/多旋翼无人机/videoblocks-slow-motion-drone-takeoff_b3sv8vzub__SB_PM.mp4"
video = "/database/水印视频/storyblocks/运动飞机/4359-small-airplane-aircraft-aviation-landing-mountain-travel-trip-sunny-da_nkegz2_t__SB_PM.mp4"
cap = cv.VideoCapture(video)
sel = set(range(1,1000,50))
index = 0
while True:
result, frame = cap.read()
if not result: break
index += 1
if index in sel:
I1 = (frame.astype(float) - alpha * W)/(1-alpha)
I1[I1<0] = 0
I1 = I1.astype(np.uint8)
I2 = (frame.astype(float) - alpha2 * W2)/(1-alpha2)
I2[I2<0] = 0
I2 = I2.astype(np.uint8)
I3 = I1.copy()
fI = I1.copy()
fI[box[0]:box[2],box[1]:box[3],:] = cv.medianBlur(fI[box[0]:box[2],box[1]:box[3],:], 7)
I3[bg!=0] = fI[bg!=0]
I4 = I2.copy()
fI = I2.copy()
fI[box[0]:box[2],box[1]:box[3],:] = cv.medianBlur(fI[box[0]:box[2],box[1]:box[3],:], 7)
I3[bg!=0] = fI[bg!=0]
cv.imwrite("imgs/storyblocks_orig.png",frame)
cv.imwrite("imgs/storyblocks_subs.png",I1)
cv.imwrite("imgs/storyblocks_res.png",I3)
cv.imshow("", np.hstack([np.vstack([I1,I2]),np.vstack([I3,I4])]))
cv.waitKey(0)
def process_video(video,out_video):
camera = cv.VideoCapture(video)
if not camera.isOpened():
raise IOError("Couldn't open webcam or video")
video_FourCC = int(camera.get(cv.CAP_PROP_FOURCC))
video_fps = camera.get(cv.CAP_PROP_FPS)
video_size = (int(camera.get(cv.CAP_PROP_FRAME_WIDTH)),
int(camera.get(cv.CAP_PROP_FRAME_HEIGHT)))
vwriter = cv.VideoWriter(out_video, video_FourCC,
video_fps, video_size, isColor=True)
accum_time = 0
idx = -1
while True:
idx += 1
res, frame = camera.read()
if not res:
break
start = time.time()
I1 = (frame.astype(float) - alpha * W)/(1-alpha)
I1[I1<0] = 0
I1 = I1.astype(np.uint8)
fI = I1[box[0]:box[2],box[1]:box[3],:].copy()
fI = cv.medianBlur(fI, 5)
I1[box[0]:box[2],box[1]:box[3],:][med!=0] = fI[med!=0]
accum_time += time.time() - start
print("frame:", idx,"fps:", (idx+1)/accum_time)
vwriter.write(I1)
# break
camera.release()
vwriter.release()
def main():
alpha, W, box = get_alpha_W_black()
alpha2, W2, bg = blur_mask(alpha, W, box)
cv.imwrite("imgs/storyblocks_alpha.png", (alpha*255).astype(np.uint8))
cv.imwrite("imgs/storyblocks_W.png", (W).astype(np.uint8))
process_video_demo(alpha, W, alpha2, W2, bg, box)
return
dirname = "/database/水印视频/storyblocks/"
for root, dirs, names in os.walk(dirname):
if dirs==[]:
os.makedirs(root.replace("水印视频", "去水印视频"), exist_ok=True)
for name in names:
video = root+"/"+name
out_video = root.replace("水印视频", "去水印视频")+"/"+name
print(video)
process_video(video, out_video)
if __name__ == '__main__':
main()