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Finally 2D stabilization auto scale factor should be calculated perfectly

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This commit is contained in:
Sergey Sharybin
2012-03-10 16:31:12 +00:00
parent 3658389e72
commit be9aa6eada
1 changed files with 48 additions and 13 deletions
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61
source/blender/blenkernel/intern/tracking.c
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@@ -2487,12 +2487,14 @@ static float stabilization_auto_scale_factor(MovieTracking *tracking, int width,
MovieTrackingStabilization *stab= &tracking->stabilization;
float aspect= tracking->camera.pixel_aspect;
printf("\n%s\n", __func__);
if(stab->ok)
return stab->scale;
if(stabilization_median_point(tracking, 1, firstmedian)) {
int sfra= INT_MAX, efra= INT_MIN, cfra;
float scalex= 1.0f, scaley= 1.0f;
float scale= 1.0f;
MovieTrackingTrack *track;
stab->scale= 1.0f;
@@ -2510,17 +2512,23 @@ static float stabilization_auto_scale_factor(MovieTracking *tracking, int width,
for(cfra=sfra; cfra<=efra; cfra++) {
float median[2];
float loc[2], scale, angle;
float loc[2], angle, tmp_scale;
int i;
float mat[4][4];
float points[4][2]={{0.0f, 0.0f}, {0.0f, height}, {width, height}, {width, 0.0f}};
float si, co;
if(cfra != 208)
continue;
stabilization_median_point(tracking, cfra, median);
calculate_stabdata(tracking, cfra, width, height, firstmedian, median,
loc, &scale, &angle);
calculate_stabdata(tracking, cfra, width, height, firstmedian, median, loc, &tmp_scale, &angle);
BKE_tracking_stabdata_to_mat4(width, height, aspect, loc, scale, angle, mat);
BKE_tracking_stabdata_to_mat4(width, height, aspect, loc, 1.0f, angle, mat);
si = sin(angle);
co = cos(angle);
for(i= 0; i<4; i++) {
int j;
@@ -2540,21 +2548,48 @@ static float stabilization_auto_scale_factor(MovieTracking *tracking, int width,
sub_v3_v3v3(v2, point, a);
if(cross_v2v2(v1, v2) >= 0.0f) {
float dist= dist_to_line_v2(point, a, b), cur_scale;
const float rotDx[4][2] = {{1.0f, 0.0f}, {0.0f, -1.0f}, {-1.0f, 0.0f}, {0.0f, 1.0f}};
const float rotDy[4][2] = {{0.0f, 1.0f}, {1.0f, 0.0f}, {0.0f, -1.0f}, {-1.0f, 0.0f}};
if(i%2==0) {
cur_scale= 0.5f * (float)width / (0.5f * (float)width - dist);
scalex= MAX2(scalex, cur_scale);
} else {
cur_scale= 0.5f * (float)height / (0.5f * (float)height - dist);
scaley= MAX2(scaley, cur_scale);
float dx = loc[0] * rotDx[j][0] + loc[1] * rotDx[j][1],
dy = loc[0] * rotDy[j][0] + loc[1] * rotDy[j][1];
float w, h, E, F, G, H, I, J, K, S;
if(j % 2) {
w = (float)height / 2.0f;
h = (float)width / 2.0f;
}
else {
w = (float)width / 2.0f;
h = (float)height / 2.0f;
}
E = -w*co + h*si;
F = -h*co - w*si;
if ((i % 2) == (j % 2)) {
G = -w*co - h*si;
H = h*co - w*si;
}
else {
G = w*co + h*si;
H = -h*co + w*si;
}
I = F - H;
J = G - E;
K = G*F - E*H;
S = (-w*I - h*J) / (dx*I + dy*J + K);
scale = MAX2(scale, S);
}
}
}
}
stab->scale= MAX2(scalex, scaley);
stab->scale= scale;
if(stab->maxscale>0.0f)
stab->scale= MIN2(stab->scale, stab->maxscale);