[英]Millisecond for image name file not increasing when writing some images in sequence (cv2.imwrite) Python
I have face detection script, and it's working as intended but I want to extract detected and cropped face as well.我有人脸检测脚本,它按预期工作,但我也想提取检测到和裁剪的人脸。 Then I want to differentiate the image name file with millisecond.
然后我想用毫秒来区分图像名称文件。 eg:
例如:
- 17.564.jpg
17.564.jpg
- 17.777.jpg
17.777.jpg
- 17.987.jpg
17.987.jpg
My problem is, the millisecond not increasing/updating (All the rest of the images have same timestamp, the i
variable is increasing).我的问题是,毫秒没有增加/更新(所有其余的图像都具有相同的时间戳,
i
变量正在增加)。 I already put strftime
inside the for loop.我已经把
strftime
放在 for 循环中。
This is my code, and the output:这是我的代码和输出:
i = 0
now = time.time()
mlsec = repr(now).split('.')[1][:3]
for (x, y, w, h) in faces:
cv2.rectangle(readImg, (x, y), (x + w, y + h), (0, 255, 0), 1)
crop = readImg[y:y + h, x:x + w]
i += 1
ms = "%d. " % i + time.strftime("%S.{}".format(mlsec))
cv2.imwrite("crop\\%s.jpg" % ms, crop)
Btw, sorry for my english.顺便说一句,对不起我的英语。 I'll edit my question if someone still not understand what I'm asking.
如果有人仍然不明白我在问什么,我会编辑我的问题。 Thank you in advance.
先感谢您。
Your command你的命令
mlsec = repr(now).split('.')[1][:3]
is out of your loop .不在你的圈子里。 Put it inside:
放在里面:
i = 0
for (x, y, w, h) in faces:
cv2.rectangle(readImg, (x, y), (x + w, y + h), (0, 255, 0), 1)
crop = readImg[y:y + h, x:x + w]
i += 1
mlsec = repr(now).split('.')[1][:3] # <------ Here
ms = "%d. " % i + time.strftime("%S.{}".format(mlsec))
cv2.imwrite("crop\\%s.jpg" % ms, crop)
Maybe you don't need the exact milliseconds, you only want different times.也许您不需要确切的毫秒数,您只需要不同的时间。 So put a wait in your loop, eg 100 milliseconds:
所以在你的循环中等待,例如 100 毫秒:
import time
i = 0
for (x, y, w, h) in faces:
time.sleep(0.1) # <------------------------------- wait 0.1s = 100 ms
cv2.rectangle(readImg, (x, y), (x + w, y + h), (0, 255, 0), 1)
crop = readImg[y:y + h, x:x + w]
i += 1
mlsec = repr(now).split('.')[1][:3] # <------ Here
ms = "%d. " % i + time.strftime("%S.{}".format(mlsec))
cv2.imwrite("crop\\%s.jpg" % ms, crop)
Note:笔记:
Instead of manually control your i
variable, you may use the enumerate()
built-in function (which is more Pythonic):您可以使用
enumerate()
内置函数(更像 Pythonic),而不是手动控制i
变量:
import time
for i, (x, y, w, h) in enumerate(faces): <--- Here; your i += 1 command I deleted
time.sleep(0.1)
cv2.rectangle(readImg, (x, y), (x + w, y + h), (0, 255, 0), 1)
crop = readImg[y:y + h, x:x + w]
mlsec = repr(now).split('.')[1][:3]
ms = "%d. " % i + time.strftime("%S.{}".format(mlsec))
cv2.imwrite("crop\\%s.jpg" % ms, crop)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.