c++ inference result is empty

[tianjiahao]

hello, I set opencv and tensorrt installation paths in CMakeLists.txt:

Find and include OpenCV

#set(OpenCV_DIR "your path to OpenCV")
set(OpenCV_DIR "/usr/local/opencv4/")
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})

Set TensorRT path if not set in environment variables

#set(TENSORRT_DIR "your path to TensorRT")
set(TENSORRT_DIR "/var/lib/TensorRT-8.6.0.12/targets/x86_64-linux-gnu")

I use command ./yolov9-tensorrt ../../weights/yolov9-c-converted-fp16.engine ../data/images，but no result, the pop-up window is the original image, the environment is cuda 11.6, cudnn 8.4, tensorrt 8.6.0.12,

[spacewalk01]

Hi, did you put opencv dll files in Release folder? for example, copy the opencv dll files such as opencv_world490.dll and opencv_videoio_ffmpeg490_64.dll into the /build/Release folder.

[tianjiahao]

Hi, did you put opencv dll files in Release folder? for example, copy the opencv dll files such as opencv_world490.dll and opencv_videoio_ffmpeg490_64.dll into the /build/Release folder.

I use command cmake --build . --config Release, not find Release folde, but get "yolov9-tensorrt", and I not put opencv dll files

and I use command cmake ..

-- The C compiler identification is GNU 9.4.0
-- The CXX compiler identification is GNU 9.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Found CUDA: /usr/local/cuda (found version "11.6")
-- Found OpenCV: /usr/local/opencv4 (found version "4.9.0")
-- Configuring done
-- Generating done
-- Build files have been written to: /opt/tjh/yolov9-main/TensorRT-YOLOv9-main/build
does it success?

[tianjiahao]

thanks for your quick response, I find the reason. I use the WongKinYiu/yolov9 export.py, get the tensorrt engine file, use it and get no result, but it works in python.
use this command trtexec.exe --onnx=yolov9-c-converted.onnx --explicitBatch --saveEngine=yolov9-c.engine --fp16
this tensorrt engine is success!