static vx_status VX_CALLBACK vxHarrisInitializer(vx_node node, vx_reference parameters[], vx_uint32 num)
{
vx_status status = VX_FAILURE;
if (num == dimof(harris_kernel_params))
{
vx_image src = (vx_image)parameters[0];
vx_scalar str = (vx_scalar)parameters[1];
vx_scalar min = (vx_scalar)parameters[2];
vx_scalar sen = (vx_scalar)parameters[3];
vx_scalar win = (vx_scalar)parameters[4];
vx_scalar blk = (vx_scalar)parameters[5];
vx_array arr = (vx_array)parameters[6];
vx_scalar num_corners = (vx_scalar)parameters[7];
vx_context c = vxGetContext((vx_reference)node);
vx_graph g = vxCreateGraph(c);
vxLoadKernels(c, "openvx-extras");
vxLoadKernels(c, "openvx-debug");
if (g)
{
vx_uint32 i = 0;
vx_int32 ds = 4;
vx_scalar shift = vxCreateScalar(c, VX_TYPE_INT32, &ds);
vx_image virts[] = {
vxCreateVirtualImage(g, 0, 0, VX_DF_IMAGE_VIRT), // Gx
vxCreateVirtualImage(g, 0, 0, VX_DF_IMAGE_VIRT), // Gy
vxCreateVirtualImage(g, 0, 0, VX_DF_IMAGE_VIRT), // Score
vxCreateVirtualImage(g, 0, 0, VX_DF_IMAGE_VIRT), // Suppressed
vxCreateVirtualImage(g, 0, 0, VX_DF_IMAGE_U8), // Shifted Suppressed Log10
};
vx_node nodes[] = {
vxSobelMxNNode(g, src, win, virts[0], virts[1]),
vxHarrisScoreNode(g, virts[0], virts[1], sen, blk, virts[2]),
vxEuclideanNonMaxNode(g, virts[2], str, min, virts[3]),
vxImageListerNode(g, virts[3], arr, num_corners),
#if defined(OPENVX_DEBUGGING)
vxConvertDepthNode(g,virts[3],virts[4],VX_CONVERT_POLICY_WRAP,shift),
vxFWriteImageNode(g,virts[4],"oharris_strength_power_up4.pgm"),
#endif
};
status = VX_SUCCESS;
status |= vxAddParameterToGraphByIndex(g, nodes[0], 0); // src
status |= vxAddParameterToGraphByIndex(g, nodes[2], 1); // str
status |= vxAddParameterToGraphByIndex(g, nodes[2], 2); // min
status |= vxAddParameterToGraphByIndex(g, nodes[1], 2); // sen
status |= vxAddParameterToGraphByIndex(g, nodes[0], 1); // win
status |= vxAddParameterToGraphByIndex(g, nodes[1], 3); // blk
status |= vxAddParameterToGraphByIndex(g, nodes[3], 1); // arr
status |= vxAddParameterToGraphByIndex(g, nodes[3], 2); // num_corners
for (i = 0; i < dimof(nodes); i++)
{
vxReleaseNode(&nodes[i]);
}
for (i = 0; i < dimof(virts); i++)
{
vxReleaseImage(&virts[i]);
}
vxReleaseScalar(&shift);
status |= vxVerifyGraph(g);
VX_PRINT(VX_ZONE_INFO, "Status from Child Graph = %d\n", status);
if (status == VX_SUCCESS)
{
status = vxSetChildGraphOfNode(node, g);
}
else
{
vxReleaseGraph(&g);
}
}
}
return status;
}
static vx_status VX_CALLBACK vxHalfscaleGaussianInitializer(vx_node node, const vx_reference *parameters, vx_uint32 num)
{
vx_status status = VX_ERROR_INVALID_PARAMETERS;
if (num == 3)
{
vx_image input = (vx_image)parameters[0];
vx_image output = (vx_image)parameters[1];
vx_int32 kernel_size = 3;
vx_convolution convolution = 0;
vx_context context = vxGetContext((vx_reference)node);
vx_graph graph = vxCreateGraph(context);
if (vxGetStatus((vx_reference)graph) == VX_SUCCESS)
{
vx_uint32 i;
/* We have a child-graph; we want to make sure the parent
graph is recognized as a valid scope for sake of virtual
image parameters. */
graph->parentGraph = node->graph;
vxReadScalarValue((vx_scalar)parameters[2], &kernel_size);
if (kernel_size == 3 || kernel_size == 5)
{
if (kernel_size == 5)
{
convolution = vxCreateGaussian5x5Convolution(context);
}
if (kernel_size == 3 || convolution)
{
vx_image virt = vxCreateVirtualImage(graph, 0, 0, VX_DF_IMAGE_U8);
vx_node nodes[] = {
kernel_size == 3 ? vxGaussian3x3Node(graph, input, virt) : vxConvolveNode(graph, input, convolution, virt),
vxScaleImageNode(graph, virt, output, VX_INTERPOLATION_TYPE_NEAREST_NEIGHBOR),
};
vx_border_mode_t borders;
vxQueryNode(node, VX_NODE_ATTRIBUTE_BORDER_MODE, &borders, sizeof(borders));
for (i = 0; i < dimof(nodes); i++) {
vxSetNodeAttribute(nodes[i], VX_NODE_ATTRIBUTE_BORDER_MODE, &borders, sizeof(borders));
}
status = VX_SUCCESS;
status |= vxAddParameterToGraphByIndex(graph, nodes[0], 0); /* input image */
status |= vxAddParameterToGraphByIndex(graph, nodes[1], 1); /* output image */
status |= vxAddParameterToGraphByIndex(graph, node, 2); /* gradient size - refer to self to quiet sub-graph validator */
status |= vxVerifyGraph(graph);
/* release our references, the graph will hold it's own */
for (i = 0; i < dimof(nodes); i++) {
vxReleaseNode(&nodes[i]);
}
if (convolution) vxReleaseConvolution(&convolution);
vxReleaseImage(&virt);
status |= vxSetChildGraphOfNode(node, graph);
}
}
vxReleaseGraph(&graph);
}
}
return status;
}
