If it possible port cv::add to VIC core?

[ckt1010]

Hi,
Since I need add three images togather on Orin AGX 64G, just like cv:add did. But I hope it don’t use GPU or CPU. If it possible use VIC or any other core to realize it ?
Thanks!
BR/Tim

[AastaLLL]

Hi,

Please check the below sample or the nvcompositor component in Gstreamer:

https://docs.nvidia.com/jetson/l4t-multimedia/l4t_mm_13_multi_camera.html

You can set alpha to all 1 for adding:
https://docs.nvidia.com/jetson/archives/r35.4.1/ApiReference/struct__NvBufSurfTransformCompositeBlendParamsEx.html

typedef struct _NvBufSurfTransformCompositeBlendParamsEx
{
  /** Holds legacy composite blend parameters */
  NvBufSurfTransformCompositeBlendParams params;
  /** Holds source rectangle coordinates of input buffers for compositing. */
  NvBufSurfTransformRect *src_comp_rect;
  /** Holds destination rectangle coordinates of input buffers for compositing. */
  NvBufSurfTransformRect *dst_comp_rect;
  /** Holds composite filters to use for composition/blending. */
  NvBufSurfTransform_Inter *composite_blend_filter;
  /** Holds alpha values of input buffers for the blending. */
  float *alpha;
  /** reserved fields. */
  void *reserved[STRUCTURE_PADDING];
}NvBufSurfTransformCompositeBlendParamsEx;

Thanks.

[ckt1010]

Hi AastaLLL,
Thanks for your reply.
Let me comfirm:

/** Specifies GPU-Lanzos, VIC-Smart interpolation. */
  NvBufSurfTransformInter_Algo3,

NvBufSurfTransformInter_Algo3 means it only use VIC core realy?
Thanks!

[AastaLLL]

Hi,

It shoud be controled by the NvBufSurfTransformCompute_VIC parameter.

https://docs.nvidia.com/metropolis/deepstream/sdk-api/group__ds__bbb.html

enum  	NvBufSurfTransform_Compute {
  NvBufSurfTransformCompute_Default,
  NvBufSurfTransformCompute_GPU,
  NvBufSurfTransformCompute_VIC
}

Thanks.

[ckt1010]

OK, Thanks!