TDA4VM: Can Custom OpenVX kernel with OpenCV run on the DSP?

Hello Lucas,

Thanks for your reply.

Then can OpenCV run on the Host CPU by implement host OpenVX kernel with OpenCV in it?

I saw an tutorial video here:

https://training.ti.com/module-1-how-openvx-compares-other-popular-compute-frameworks?context=1147880-1140070-1147252-1147257

Is there any example that could run OpenCV within OpenVX kernel on TI's device? 

What's the merit we could get to implement the OpenVX kernel with OpenCV?

Thank you very much!

Hello Lucas,

I follow the instruction in https://medium.com/trueface-ai/trueface-tutorials-how-to-cross-compile-popular-computer-vision-c-frameworks-for-raspberry-pi-4-afcbe2dcc302 to build for aarch64.

Then the concerto.mak is:

ifeq ($(TARGET_CPU), $(filter $(TARGET_CPU), A72))

include $(PRELUDE)

TARGET := vx_kernels_lanenet_host
TARGETTYPE := library
CPPSOURCES += vx_lanenet_postprocessing_host.cpp

IDIRS += $(CUSTOM_KERNEL_PATH)/lanenet/include
# IDIRS += $(J7_C_MODELS_PATH)/include
# IDIRS += $(TIOVX_PATH)/source/include
IDIRS += /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4

LDIRS += /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/lib
LDIRS += /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/lib/opencv4/3rdparty

OPENCV_LIBS =
OPENCV_LIBS += opencv_calib3d
OPENCV_LIBS += opencv_core
OPENCV_LIBS += opencv_dnn
OPENCV_LIBS += opencv_features2d
OPENCV_LIBS += opencv_flann
OPENCV_LIBS += opencv_gapi
OPENCV_LIBS += opencv_highgui
OPENCV_LIBS += opencv_imgcodecs
OPENCV_LIBS += opencv_imgproc
OPENCV_LIBS += opencv_ml
OPENCV_LIBS += opencv_objdetect
OPENCV_LIBS += opencv_photo
OPENCV_LIBS += opencv_stitching
OPENCV_LIBS += opencv_video
OPENCV_LIBS += opencv_videoio
OPENCV_LIBS += ade
OPENCV_LIBS += libjpeg-turbo
OPENCV_LIBS += libpng
OPENCV_LIBS += libprotobuf
OPENCV_LIBS += quirc
OPENCV_LIBS += zlib

STATIC_LIBS += $(OPENCV_LIBS)

CPPFLAGS += --std=c++11

include $(FINALE)

endif

But the error occured as below:

TARGET_COMBO=J7:LINUX:A72:1:release:GCC_LINUX_ARM
HOST_ROOT=/home/cat/V3GA_07_02/psdkra/tiovx
HOST_COMPILER=GCC_LINUX_ARM
HOST_PLATFORM=PC
HOST_OS=LINUX
HOST_CPU=x86_64
HOST_ARCH=64
HOST_FAMILY=x86_64
HOST_NUM_CORES=8
TARGET_OS=LINUX
TARGET_CPU=A72
TARGET_ARCH=64
TARGET_FAMILY=ARM
TARGET_NUM_CORES=1
TARGET_PLATFORM=J7
TARGET_BUILD=release
TARGET_OUT=/home/cat/V3GA_07_02/psdkra/tiovx/out/J7/A72/LINUX/release
TARGET_DOC=/home/cat/V3GA_07_02/psdkra/tiovx/out/J7/A72/LINUX/release/docs
BUILD_DEFS = CUSTOM_KERNEL_PATH BUILD_TUTORIAL BUILD_CONFORMANCE_TEST
J7_LINUX_A72_1_release_GCC_LINUX_ARM_DEFS = LINUX J7 A72="A72" TARGET_NUM_CORES=1 TARGET_ARCH=64 ARCH_64 ARM TARGET_BUILD=1
J7_LINUX_A72_1_release_GCC_LINUX_ARM_LDIRS =
SCM_ROOT=
SCM_VERSION=
Copying Prebuilt libs from prebuilt_libs to lib
[GCC] Compiling C++ vx_lanenet_postprocessing_host.cpp
In file included from /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core.hpp:3290,
from /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/opencv.hpp:52,
from /home/cat/V3GA_07_02/psdkra/tiovx/kernels_j7/lanenet/host/vx_lanenet_postprocessing_host.cpp:5:
/home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core/utility.hpp:697:14: error: 'recursive_mutex' in namespace 'std' does not name a type
697 | typedef std::recursive_mutex Mutex;
| ^~~~~~~~~~~~~~~
In file included from /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core.hpp:3290,
from /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/opencv.hpp:52,
from /home/cat/V3GA_07_02/psdkra/tiovx/kernels_j7/lanenet/host/vx_lanenet_postprocessing_host.cpp:5:
/home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core/utility.hpp:63:1: note: 'std::recursive_mutex' is defined in header '<mutex>'; did you forget to '#include <mutex>'?
62 | #include <mutex> // std::mutex, std::lock_guard
+++ |+#include <mutex>
63 | #endif
In file included from /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core.hpp:3290,
from /home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/opencv.hpp:52,
from /home/cat/V3GA_07_02/psdkra/tiovx/kernels_j7/lanenet/host/vx_lanenet_postprocessing_host.cpp:5:
/home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core/utility.hpp:698:29: error: 'Mutex' is not a member of 'cv'
698 | typedef std::lock_guard<cv::Mutex> AutoLock;
| ^~~~~
/home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core/utility.hpp:698:29: error: 'Mutex' is not a member of 'cv'
/home/cat/opencv-4.1.0/build_aarch64/install_aarch64/usr/local/include/opencv4/opencv2/core/utility.hpp:698:34: error: template argument 1 is invalid
698 | typedef std::lock_guard<cv::Mutex> AutoLock;
| ^

Hello Lucas,

I see there are OpenCV libraries supported on older version products.

https://www.ti.com/microcontrollers-mcus-processors/processors/digital-signal-processors/libraries/open-cv.html

So, is OpenCV not ready on DSPs in TDA4VM product? Will it be supported in the future?