コード例 #1
0
static float bilinear_interpolation_at(float *x, int w, int h, float p, float q)
{
	int ip = p;
	int iq = q;
	float a = getsamplec(x, w, h, 1, ip  , iq  , 0);
	float b = getsamplec(x, w, h, 1, ip+1, iq  , 0);
	float c = getsamplec(x, w, h, 1, ip  , iq+1, 0);
	float d = getsamplec(x, w, h, 1, ip+1, iq+1, 0);
	float r = evaluate_bilinear_cell(a, b, c, d, p-ip, q-iq);
	return r;
}
コード例 #2
0
ファイル: cgpois_rec.c プロジェクト: mnhrdt/imscript 
static float bilinear_interpolation(float *x, int w, int h, float p, float q)
{
	int ip = p;
	int iq = q;
	float a = getpixel_1(x, w, h, ip  , iq  );
	float b = getpixel_1(x, w, h, ip+1, iq  );
	float c = getpixel_1(x, w, h, ip  , iq+1);
	float d = getpixel_1(x, w, h, ip+1, iq+1);
	float r = evaluate_bilinear_cell(a, b, c, d, p-ip, q-iq);
	return r;
}
コード例 #3
0
ファイル: viho.c プロジェクト: hugomoe/ground_truth 
// instance of "interpolator_t", for bilinear interpolation
static float bilinear_interpolation_at(float *x, int w, int h, int pd,
		float p, float q, int l, extrapolator_t pix)
{
	int ip = floor(p);
	int iq = floor(q);
	float a = pix(x, w, h, pd, ip  , iq  , l);
	float b = pix(x, w, h, pd, ip+1, iq  , l);
	float c = pix(x, w, h, pd, ip  , iq+1, l);
	float d = pix(x, w, h, pd, ip+1, iq+1, l);
	return evaluate_bilinear_cell(a, b, c, d, p-ip, q-iq);
}
コード例 #4
0
static void bilinear_interpolation_vec_at(float *result,
		float *x, int w, int h, int pd,
		float p, float q)
{
	int ip = p;
	int iq = q;
	for (int l = 0; l < pd; l++) {
		float a = getsamplec(x, w, h, pd, ip  , iq  , l);
		float b = getsamplec(x, w, h, pd, ip+1, iq  , l);
		float c = getsamplec(x, w, h, pd, ip  , iq+1, l);
		float d = getsamplec(x, w, h, pd, ip+1, iq+1, l);
		float r = evaluate_bilinear_cell(a, b, c, d, p-ip, q-iq);
		result[l] = r;
	}
}