CVCUDA or VPI on Deepstream dGPU?

[Fiona.Chen]

@namogg1012

cv::Mat input_frame(surf_params->height, surf_params->width, CV_8UC4, surf_params->dataPtr, surf_params->pitch);
        int frame_height = static_cast<int>(surf_params->height);
        int frame_width = static_cast<int>(surf_params->width);
        cv::Mat rgb_frame;
        cv::cvtColor(input_frame, rgb_frame, cv::COLOR_RGBA2RGB);

You need to consult CVCUDA team for whether “cv::Mat” support pitch layout. Issues · CVCUDA/CV-CUDA

@namogg1012

How about VPI Cuda on dGPU, i have seen some samples on Deepstream but they all use jetson.

Please compare the VPIImage to the NvBufSurface by yourself, the NvBufSurface interfaces has already provided all parameters of the cuda memory.
Maybe VPI on dGPU and Jetson - Intelligent Video Analytics / DeepStream SDK - NVIDIA Developer Forums can help you a little.