static vx_convolution vxCreateGaussian5x5Convolution(vx_context context)
{
vx_convolution conv = vxCreateConvolution(context, 5, 5);
vx_status status = vxWriteConvolutionCoefficients(conv, (vx_int16 *)gaussian5x5);
if (status != VX_SUCCESS)
{
vxReleaseConvolution(&conv);
return NULL;
}
status = vxSetConvolutionAttribute(conv, VX_CONVOLUTION_ATTRIBUTE_SCALE, (void *)&gaussian5x5scale, sizeof(vx_uint32));
if (status != VX_SUCCESS)
{
vxReleaseConvolution(&conv);
return NULL;
}
return conv;
}
vx_status example_conv(vx_context context)
{
//! [assign]
// A horizontal Scharr gradient operator with different scale.
vx_int16 gx[3][3] = {
{ 3, 0, -3},
{ 10, 0,-10},
{ 3, 0, -3},
};
vx_uint32 scale = 9;
vx_convolution scharr_x = vxCreateConvolution(context, 3, 3);
vxAccessConvolutionCoefficients(scharr_x, NULL);
vxCommitConvolutionCoefficients(scharr_x, (vx_int16*)gx);
vxSetConvolutionAttribute(scharr_x, VX_CONVOLUTION_ATTRIBUTE_SCALE, &scale, sizeof(scale));
//! [assign]
vxReleaseConvolution(&scharr_x);
return VX_SUCCESS;
}