/* Create a 3D index array into which gradient values are accumulated.
After filling array, copy values back into vec.
*/
void KeySampleVec(float *vec, KKeypoint key, Image grad, Image ori,
float scale, float row, float col)
{
int i, j, k, v;
float index[IndexSize][IndexSize][OriSize];
/* Initialize index array. */
for (i = 0; i < IndexSize; i++)
for (j = 0; j < IndexSize; j++)
for (k = 0; k < OriSize; k++)
index[i][j][k] = 0.0;
KeySample(index, key, grad, ori, scale, row, col);
/* Unwrap the 3D index values into 1D vec. */
v = 0;
for (i = 0; i < IndexSize; i++)
for (j = 0; j < IndexSize; j++)
for (k = 0; k < OriSize; k++)
vec[v++] = index[i][j][k];
}
/* Create a 3D index array into which gradient values are accumulated.
After filling array, copy values back into vec.
*/
void KeySampleVec(
keypoint& key, const flimage& grad,
float scale, float row, float col,siftPar &par)
{
float index[IndexSize][IndexSize][OriSize];
/* Initialize index array. */
for (int i = 0; i < IndexSize; i++)
for (int j = 0; j < IndexSize; j++)
for (int k = 0; k < OriSize; k++)
index[i][j][k] = 0.0;
KeySample(index, key, grad, scale, row, col, par);
/* Unwrap the 3D index values into 1D vec. */
int v = 0;
for (int i = 0; i < IndexSize; i++)
for (int j = 0; j < IndexSize; j++)
for (int k = 0; k < OriSize; k++)
key.vec[v++] = index[i][j][k];
}
