Custom Application using OpenVX, Node kernel Validate failed

Luka Karan

I have 2 nodes, i execute them but i got message " Node kernel Validate failed".

I found that statust change his value ( it is not more VX_SUCCESS) when it calculates num_params in vx_node.c in ownNodeKernelValidate

vx_status ownNodeKernelValidate(vx_node node, vx_meta_format meta[])
{
    vx_status status = VX_SUCCESS;
    uint32_t i;
    uint32_t num_params;
    if((NULL != node) && (NULL != node->kernel))
    {
        if(node->kernel->validate)
        {
            /* the type of the parameter is known by the system, so let the  system set it by default. */
          num_params = node->kernel->signature.num_parameters;      
            for (i = 0; i < num_params; i ++)
            {
                meta[i]->type = node->kernel->signature.types[i];            
            }
            status = node->kernel->validate(node, node->parameters, num_params, meta);                         
        }     
    }
    else
    {    
        status = VX_ERROR_INVALID_PARAMETERS;     
    }

    return status;
}

can anyone help me to solve this problem?

over 3 years ago

0 Shyam Jagannathan over 3 years ago

TI__Genius 10345 points

Basically the number of parameters passed to the node is not matching the number of parameters expected by the kernel. Can you double check what you are passing?

Regards,
Shyam

0 Luka Karan over 3 years ago in reply to Shyam Jagannathan

Prodigy 190 points

I created struct with graph objects

typedef struct
{
    vx_graph        graph;
    vx_image        img;
    vx_image        out_image;
    vx_image        intermediate;
    vx_node         node;
    vx_node         node2;          
} AlgorithmLink_GraphObj;

i used vxCreateImage and vxCreateVirtualImage

 gObj->img          = vxCreateImage(pObj->context, inChInfo->width,inChInfo->height, VX_DF_IMAGE_RGB );
 gObj->intermediate = vxCreateVirtualImage(gObj->graph, 1280, 720 , VX_DF_IMAGE_IYUV );
 gObj->out_image = vxCreateImage(pObj->context, 1280, 720, VX_DF_IMAGE_IYUV );

after that i used 2 node functions

 gObj->node   = vxColorConvertNode (gObj->graph, gObj->img,gObj->intermediate);
 gObj-> node2 = vxChannelExtractNode (gObj->graph, gObj->intermediate,VX_CHANNEL_Y,gObj->out_image);

at the end i used

 vxStatus = vxVerifyGraph(gObj->graph);
            if (VX_SUCCESS != vxStatus)
            {
                status = SYSTEM_LINK_STATUS_EFAIL;
                break;
            }

and here it starts making problems

0 Luka Karan over 3 years ago in reply to Luka Karan

Prodigy 190 points

By the way, I forgot to mention that i am using VIsion SDK 03_03_00_00 on TDA2XX chip and I started from your example for Harris corners detection

0 Lucas Weaver over 3 years ago in reply to Luka Karan

TI__Genius 13735 points

Hello,

It looks like the out_image should be of type "VX_DF_IMAGE_U8" rather than "VX_DF_IMAGE_IYUV". Since the input to the vxChannelExtractNode is a IYUV image and you are extracting the Y channel, this extracted Y channel will now be represented as a U8 image. If you make this modification, do you still see this error?

Regards,

Lucas

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Custom Application using OpenVX, Node kernel Validate failed