Please provide complete information as applicable to your setup.
**• Hardware Platform Jetson
**• DeepStream Version 6.0
**• JetPack Version 4.6.1
Hello everyone and professors:
I meet a problem about add a new object in dsexample.
(1) In the GPU computer, I added a new object in dsexample, and use SGIE to classify it. In the GPU computer, It works fine.
(2) I move the same code and configure text into Xavier NX. I can not find the added new object! What is the problem?
My add new object code as below:
static GstFlowReturn
gst_dsexample_transform_ip (GstBaseTransform * btrans, GstBuffer * inbuf)
{
int n_area=0;
int n_rows=0;
int temp_i;
int temp_j;
int fence_point_data[100][4]={0};
int summary_info[10][2]={0};
GstDsExample *dsexample = GST_DSEXAMPLE (btrans);
GstMapInfo in_map_info;
GstFlowReturn flow_ret = GST_FLOW_ERROR;
gdouble scale_ratio = 1.0;
DsExampleOutput *output;
NvBufSurface *surface = NULL;
NvDsBatchMeta *batch_meta = NULL;
NvDsFrameMeta *frame_meta = NULL;
NvDsMetaList * l_frame = NULL;
guint i = 0;
dsexample->frame_num++;
CHECK_CUDA_STATUS (cudaSetDevice (dsexample->gpu_id),
“Unable to set cuda device”);
memset (&in_map_info, 0, sizeof (in_map_info));
if (!gst_buffer_map (inbuf, &in_map_info, GST_MAP_READ))
{
g_print (“Error: Failed to map gst buffer\n”);
goto error;
}
nvds_set_input_system_timestamp (inbuf, GST_ELEMENT_NAME (dsexample));
surface = (NvBufSurface *) in_map_info.data;
GST_DEBUG_OBJECT (dsexample,
“Processing Frame %” G_GUINT64_FORMAT " Surface %p\n",
dsexample->frame_num, surface);
if (CHECK_NVDS_MEMORY_AND_GPUID (dsexample, surface))
goto error;
batch_meta = gst_buffer_get_nvds_batch_meta (inbuf);
if (batch_meta == nullptr)
{
GST_ELEMENT_ERROR (dsexample, STREAM, FAILED,
(“NvDsBatchMeta not found for input buffer.”), (NULL));
return GST_FLOW_ERROR;
}
if (1)
{
NvDsMetaList * l_obj = NULL;
NvDsObjectMeta *obj_meta = NULL;
int camera_type;
for(l_frame = batch_meta->frame_meta_list; l_frame != NULL; l_frame = l_frame->next)
{
frame_meta = (NvDsFrameMeta *) (l_frame->data);
static int area_top = 700;
static int area_left = 700;
int area_width = 1000;
int area_height = 200;
int max_bottom = 0 ;
int limit_bottom = 200;
int min_left = 1920;
int obj_num = 0;
for (l_obj = frame_meta->obj_meta_list; l_obj != NULL; l_obj = l_obj->next)
{
obj_meta = (NvDsObjectMeta *) (l_obj->data);
if(obj_meta->class_id == 0)
{
if((obj_meta->rect_params.top + obj_meta->rect_params.height) > max_bottom)
{
max_bottom = obj_meta->rect_params.top + obj_meta->rect_params.height;
}
if(obj_meta->rect_params.left < min_left)
{
min_left = obj_meta->rect_params.left ;
}
if(obj_meta->rect_params.left < 960)
{ obj_num++; }
}
}
if(obj_num > 3)
{
// cout<< "max_bottom= “<<max_bottom<< " min_left=”<< min_left<<endl;
if (min_left > (1920 - area_width) )
min_left = (1920 - area_width);
if (max_bottom > (1080 - limit_bottom))
max_bottom = (1080 - limit_bottom);
if(max_bottom < area_height )
max_bottom = area_height;
area_top = max_bottom - area_height;
area_left = min_left;
// cout<<“area_top=” << area_top <<" area_left = "<< area_left <<endl<<endl;
}
if (my_save_mat(dsexample, surface, frame_meta->batch_id, scale_ratio,
area_left, area_top, area_width, area_height) != GST_FLOW_OK)
{
/* Error in conversion, skip processing on object. */
continue;
}
NvDsObjectMeta *my_obj_meta = nvds_acquire_obj_meta_from_pool (batch_meta);
my_obj_meta->unique_component_id = 1;
my_obj_meta->confidence = 1;
my_obj_meta->class_id = 5;
my_obj_meta->object_id = 100;
NvOSD_RectParams & set_rect_params = my_obj_meta->rect_params;
set_rect_params.left = area_left;
set_rect_params.top = area_top;
set_rect_params.width = area_width;
set_rect_params.height = area_height;
set_rect_params.has_bg_color = 0;
set_rect_params.border_width = 3;
my_obj_meta->detector_bbox_info.org_bbox_coords.left = set_rect_params.left;
my_obj_meta->detector_bbox_info.org_bbox_coords.top = set_rect_params.top;
my_obj_meta->detector_bbox_info.org_bbox_coords.width = set_rect_params.width;
my_obj_meta->detector_bbox_info.org_bbox_coords.height = set_rect_params.height;
nvds_add_obj_meta_to_frame (frame_meta, my_obj_meta, NULL);
cout<<" I am in dsexample "<<endl;
}// end frame
} //end if(1)
flow_ret = GST_FLOW_OK;
error:
nvds_set_output_system_timestamp (inbuf, GST_ELEMENT_NAME (dsexample));
gst_buffer_unmap (inbuf, &in_map_info);
return flow_ret;
}
the output can finde the print information " I am in dsexample " that means the dsexample works. But I print the detected object in deepstream-app-main.c as below:
static GstPadProbeReturn
sgie_pad_buffer_probe (GstPad * pad, GstPadProbeInfo * info, gpointer u_data)
{
static guint use_device_mem = 0;
NvDsBatchMeta batch_meta = gst_buffer_get_nvds_batch_meta (GST_BUFFER (info->data));
/ Iterate each frame metadata in batch */
for(NvDsMetaList * l_frame = batch_meta->frame_meta_list; l_frame != NULL; l_frame = l_frame->next)
{
NvDsFrameMeta *frame_meta = (NvDsFrameMeta *) l_frame->data;
for(NvDsMetaList * l_obj = frame_meta->obj_meta_list; l_obj != NULL; l_obj = l_obj->next)
{
NvDsObjectMeta *obj_meta = (NvDsObjectMeta *) l_obj->data;
// if(obj_meta->class_id==5)
printf(“class_id = %d, obj_id = %d width = %f height = %f \n”,
obj_meta->class_id,
obj_meta->object_id,
obj_meta->rect_params.width,
obj_meta->rect_params.height
);
}
}
return GST_PAD_PROBE_OK;
}
but I can not get the object whoes classs_id = 5
Please kindly help me . Thank you very much.
