Created
July 2, 2020 04:04
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# 2nd July 2020 | |
import numpy as np | |
import cv2 | |
# use it if you wonna write video or ffmpeg | |
# from skvideo.io import FFmpegWriter | |
start = 1 | |
duration = 10 | |
fps = '30' | |
cap = cv2.VideoCapture(0) | |
outfile = 'heatmap.mp4' | |
while True: | |
try: | |
_, f = cap.read() | |
f = cv2.cvtColor(f, cv2.COLOR_BGR2GRAY) | |
f = cv2.GaussianBlur(f, (11, 11), 2, 2) | |
cnt = 0 | |
res = 0.05*f | |
res = res.astype(np.float64) | |
break | |
except: | |
print('s') | |
fgbg = cv2.createBackgroundSubtractorMOG2(history=1, varThreshold=100, | |
detectShadows=True) | |
# writer = FFmpegWriter(outfile, outputdict={'-r': fps}) | |
#writer = FFmpegWriter(outfile) | |
kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (13, 13)) | |
cnt = 0 | |
sec = 0 | |
while True: | |
# if sec == duration: break | |
cnt += 1 | |
if cnt % int(fps) == 0: | |
print(sec) | |
sec += 1 | |
ret, frame = cap.read() | |
if not ret: break | |
fgmask = fgbg.apply(frame, None, 0.01) | |
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) | |
# if cnt == 30: res | |
gray = cv2.GaussianBlur(gray, (11, 11), 2, 2) | |
gray = gray.astype(np.float64) | |
fgmask = cv2.morphologyEx(fgmask, cv2.MORPH_CLOSE, kernel) | |
fgmask = fgmask.astype(np.float64) | |
res += (40 * fgmask + gray) * 0.01 | |
res_show = res / res.max() | |
res_show = np.floor(res_show * 255) | |
res_show = res_show.astype(np.uint8) | |
res_show = cv2.applyColorMap(res_show, cv2.COLORMAP_JET) | |
cv2.imshow('s', res_show) | |
# if sec < start: continue | |
# try: | |
# writer.writeFrame(res_show) | |
# except: | |
# writer.close() | |
# break | |
k = cv2.waitKey(30) & 0xff | |
if k == 27: | |
break | |
#writer.close() | |
cap.release() | |
cv2.destroyAllWindows() |
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