Python 使用基于状态的标签注释视频帧
我有一堆视频和深度贴图,展示了微软Kinect的人体姿势 我可以在视频中得到人体的骨架,但我想做的是从骨架数据中识别出某个姿势 为此,我需要用0或1对视频中的每个帧进行注释,对应于“坏姿势”和“好姿势”,即帧有一个二进制状态变量 我希望能够在matlab中播放avi文件,然后按空格键在这两种状态之间切换,同时将状态变量添加到一个数组中,该数组给出视频中每个帧的状态 matlab中有没有一个工具可以做到这一点?否则Matlab不是一个限制,Python,C++或任何其他语言都是好的。 我一直在谷歌上搜索,我发现的大部分东西都是用多边形注释单个帧。我想用视频正常帧率的一半来做这个 编辑:我使用了miindlek提供的解决方案,如果有人遇到这个问题,我决定分享一些东西。我需要在视频中看到我分配给每一帧的注释,所以我在视频的左上角画了一个小圆圈。希望这对以后的其他人有用。我还捕获了用waitKey按下的键,然后根据输出执行一些操作。这允许在注释过程中按下多个键Python 使用基于状态的标签注释视频帧,python,matlab,video,annotations,computer-vision,Python,Matlab,Video,Annotations,Computer Vision,我有一堆视频和深度贴图,展示了微软Kinect的人体姿势 我可以在视频中得到人体的骨架,但我想做的是从骨架数据中识别出某个姿势 为此,我需要用0或1对视频中的每个帧进行注释,对应于“坏姿势”和“好姿势”,即帧有一个二进制状态变量 我希望能够在matlab中播放avi文件,然后按空格键在这两种状态之间切换,同时将状态变量添加到一个数组中,该数组给出视频中每个帧的状态 matlab中有没有一个工具可以做到这一点?否则Matlab不是一个限制,Python,C++或任何其他语言都是好的。 我一直在谷歌
import numpy as np
import cv2
import os
os.chdir('PathToVideo')
# Blue cicle means that the annotation haven't started
# Green circle is a good pose
# Red is a bad pose
# White circle means we are done, press d for that
# Instructions on how to use!
# Press space to swap between states, you have to press space when the person
# starts doing poses.
# Press d when the person finishes.
# press q to quit early, then the annotations are not saved, you should only
# use this if you made a mistake and need to start over.
cap = cv2.VideoCapture('Video.avi')
# You can INCREASE the value of speed to make the video SLOWER
speed = 33
# Start with the beginning state as 10 to indicate that the procedure has not started
current_state = 10
saveAnnotations = True
annotation_list = []
# We can check wether the video capture has been opened
cap.isOpened()
colCirc = (255,0,0)
# Iterate while the capture is open, i.e. while we still get new frames.
while(cap.isOpened()):
# Read one frame.
ret, frame = cap.read()
# Break the loop if we don't get a new frame.
if not ret:
break
# Add the colored circle on the image to know the state
cv2.circle(frame,(50,50), 50, colCirc, -1)
# Show one frame.
cv2.imshow('frame', frame)
# Wait for a keypress and act on it
k = cv2.waitKey(speed)
if k == ord(' '):
if current_state==0:
current_state = 1
colCirc = (0,0,255)
else:
current_state = 0
colCirc = (0,255,0)
if current_state == 10:
current_state = 0
colCirc = (0,255,0)
if k == ord('d'):
current_state = 11
colCirc = (255,255,255)
# Press q to quit
if k == ord('q'):
print "You quit! Restart the annotations by running this script again!"
saveAnnotations = False
break
annotation_list.append(current_state)
# Release the capture and close window
cap.release()
cv2.destroyAllWindows()
# Only save if you did not quit
if saveAnnotations:
f = open('poseAnnot.txt', 'w')
for item in annotation_list:
print>>f, item
f.close()
解决任务的一种方法是将opencv库与python结合使用,如本文所述
变量
annotation\u list
包含每个帧的所有注释。要在两种模式之间切换,您必须按空格键。您想实时运行视频文件还是以较慢的速度运行?帧速率的一半是可以的,它不需要30 fps。这太完美了!谢谢:)
import numpy as np
import cv2
cap = cv2.VideoCapture('video.avi')
current_state = False
annotation_list = []
while(True):
# Read one frame.
ret, frame = cap.read()
if not ret:
break
# Show one frame.
cv2.imshow('frame', frame)
# Check, if the space bar is pressed to switch the mode.
if cv2.waitKey(1) & 0xFF == ord(' '):
current_state = not current_state
annotation_list.append(current_state)
# Convert the list of boolean values to a list of int values.
annotation_list = map(int, annotation_list)
print annotation_list
cap.release()
cv2.destroyAllWindows()