This works for me
l_obj = frame_meta.obj_meta_list
while l_obj is not None:
try:
obj_meta = pyds.NvDsObjectMeta.cast(l_obj.data)
user_meta_list = obj_meta.obj_user_meta_list
while user_meta_list is not None:
user_meta = pyds.NvDsUserMeta.cast(user_meta_list.data)
user_meta_data = user_meta.user_meta_data
if user_meta.base_meta.meta_type == pyds.nvds_get_user_meta_type("NVIDIA.DSANALYTICSOBJ.USER_META"):
user_meta_analytics = pyds_analytics.NvDsAnalyticsObjInfo.cast(user_meta.user_meta_data)
print(user_meta_analytics.lcStatus)
for frame data
l_user = frame_meta.frame_user_meta_list
while l_user is not None:
try:
user_meta = pyds.NvDsUserMeta.cast(l_user.data)
if user_meta.base_meta.meta_type != pyds.nvds_get_user_meta_type("NVIDIA.DSANALYTICSFRAME.USER_META"):
continue
user_meta_analytics = pyds_analytics.NvDsAnalyticsFrameMeta.cast(user_meta.user_meta_data)
print(user_meta_analytics.objLCCumCnt)
3 Likes
@norrarat.s - Yes that works perfect, thanks!
Yes it seems to be working now
Thanks @manojy for the guiding us and @norrarat.s for adding last piece to puzzle.
Hi All,
I am still having issues accessing the metadata for individual objects. I can get all the properties for my frame no problem ie:
l_frame = batch_meta.frame_meta_list
while l_frame is not None:
try:
frame_meta = pyds.NvDsFrameMeta.cast(l_frame.data)
l_user = frame_meta.frame_user_meta_list
while l_user is not None:
try:
user_meta = pyds.NvDsUserMeta.cast(l_user.data)
if user_meta.base_meta.meta_type != pyds.nvds_get_user_meta_type(
"NVIDIA.DSANALYTICSFRAME.USER_META"):
continue
user_meta_analytics = pyds_analytics.NvDsAnalyticsFrameMeta.cast(user_meta.user_meta_data)
print('objCnt',user_meta_analytics.objCnt)
print('objInROIcnt',user_meta_analytics.objInROIcnt)
print('objLCCumCnt',user_meta_analytics.objLCCumCnt)
print('objLCCurrCnt',user_meta_analytics.objLCCurrCnt)
print('ocStatus',user_meta_analytics.ocStatus)
print('unique_id',user_meta_analytics.unique_id)
print(user_meta_analytics.objLCCumCnt)
except Exception as ex:
print('Exception', ex)
try:
l_user = l_user.next
except StopIteration:
break
But i cant get the other part the work, as per @norrarat.s methods
The program doesnt crash, but my user_meta_list = obj_meta.obj_user_meta_list is always None.
l_obj = frame_meta.obj_meta_list
while l_obj is not None:
try:
# Casting l_obj.data to pyds.NvDsObjectMeta
obj_meta = pyds.NvDsObjectMeta.cast(l_obj.data)
user_meta_list = obj_meta.obj_user_meta_list
# print('user_meta_list', user_meta_list)
# print('class id', obj_meta.class_id)
while user_meta_list is not None:
try:
print('user_meta_list', user_meta_list)
user_meta = pyds.NvDsUserMeta.cast(user_meta_list.data)
user_meta_data = user_meta.user_meta_data
print('user_meta.base_meta.meta_type', user_meta.base_meta.meta_type)
if user_meta.base_meta.meta_type == pyds.nvds_get_user_meta_type(
"NVIDIA.DSANALYTICSOBJ.USER_META"):
user_meta_analytics = pyds_analytics.NvDsAnalyticsObjInfo.cast(
user_meta.user_meta_data)
print(user_meta_analytics.lcStatus)
except StopIteration:
break
try:
print('Next Meta List')
user_meta_list = user_meta_list.next
except StopIteration:
break
except Exception as ex:
print('Exception', ex)
try:
l_obj = l_obj.next
except StopIteration:
break
I have added direction detection and in the OSD i can see the object being assigned a direction
@niels.kjaergaard.madsen @priyanshthakore if anyone has some help
Regards Andrew
try this
if user_meta.base_meta.meta_type != pyds.nvds_get_user_meta_type("NVIDIA.DSANALYTICSOBJ.USER_META"):
continue
user_meta_analytics = pyds_analytics.NvDsAnalyticsObjInfo.cast(user_meta.user_meta_data)
print(user_meta_analytics.lcStatus)
Hello guys,
thanks for you efforts to get metadata for NvDsAnalytics. Everything works perfect!
I’ve create repo in GitHub pyds_analytics_meta, followed this one pyds_tracker_meta to simplify installation of python bindings for NvDsAnalyticsFrameMeta and NvDsAnalyticsObjInfo.
1 Like
@rostislav.etc
Thanks for the github repo I’ve just tried it.
I still have the same problem where print(“----NvDsAnalytics Object Info----”) contains no details
again this is because the line below is None.
user_meta_list = obj_meta.obj_user_meta_list
am I missing something in my pipeline/config ? I know for the tracker you need to enable past frame
Yes, I’ve update the source of example. It should be under first while.
There’s no any addition options you need to enable. NvDsAnalytics*Meta have information only in frames, where according events appears: direction, crossing line or inside ROI, therefore, after check base_meta.meta_type you might not see info.
So the frame meta concept I understand, it will give you information about the analytics applied to a frame, ie for a line crossing you can read how many cars have crossed that line, this all works perfectly with:
frame_meta = pyds.NvDsFrameMeta.cast(l_frame.data)
The Part I am still not getting is the NvDsAnalyticsObjInfo, from what I understand, this is the AnalyticsMeta applied to objects in the scene? I thought the NvDsAnalyticsObjInfo would contain the direction a car is traveling, or if its within the bounds of an ROI filter.
But in my case I can only access the ROI and the line crossing, so i can see there is 1 object in the ROI or 8 cars have crossed a line, but I cant loop through my objects and read their NvDsAnalyticsObjInfo to discover which car is in the ROI.
I can clearly see an object has a Direction applied to their tag in the OSD, but i cant access that metadata
Hi, Were you able to solve this issue? I am also getting none for user_meta_list = obj_meta.obj_user_meta_list
How did you solve it?
@lakshay.chhabra Use deepstream 5.1 they have fixed the issue and added sample app for the same
could you post a link to this sample app, please?