private static Data load_data_swag(string[] paths, int n, int classes, float jitter)
{
int index = Utils.Rand.Next() % n;
string randomPath = paths[index];
Image orig = LoadArgs.load_image_color(randomPath, 0, 0);
int h = orig.H;
int w = orig.W;
Data d = new Data();
d.Shallow = 0;
d.W = w;
d.H = h;
d.X.Rows = 1;
d.X.Vals = new float[d.X.Rows][];
d.X.Cols = h * w * 3;
int k = (4 + classes) * 30;
d.Y = new Matrix(1, k);
int dw = (int)(w * jitter);
int dh = (int)(h * jitter);
int pleft = (int)Utils.rand_uniform(-dw, dw);
int pright = (int)Utils.rand_uniform(-dw, dw);
int ptop = (int)Utils.rand_uniform(-dh, dh);
int pbot = (int)Utils.rand_uniform(-dh, dh);
int swidth = w - pleft - pright;
int sheight = h - ptop - pbot;
float sx = (float)swidth / w;
float sy = (float)sheight / h;
int flip = Utils.Rand.Next() % 2;
Image cropped = LoadArgs.crop_image(orig, pleft, ptop, swidth, sheight);
float dx = ((float)pleft / w) / sx;
float dy = ((float)ptop / h) / sy;
Image sized = LoadArgs.resize_image(cropped, w, h);
if (flip != 0)
{
LoadArgs.flip_image(sized);
}
d.X.Vals[0] = sized.Data;
fill_truth_swag(randomPath, d.Y.Vals[0], classes, flip, dx, dy, 1.0f / sx, 1.0f / sy);
return(d);
}
private static Data load_data_region(int n, string[] paths, int m, int w, int h, int size, int classes, float jitter, float hue, float saturation, float exposure)
{
string[] randomPaths = get_random_paths(paths, n, m);
int i;
Data d = new Data();
d.Shallow = 0;
d.X.Rows = n;
d.X.Vals = new float[d.X.Rows][];
d.X.Cols = h * w * 3;
int k = size * size * (5 + classes);
d.Y = new Matrix(n, k);
for (i = 0; i < n; ++i)
{
Image orig = LoadArgs.load_image_color(randomPaths[i], 0, 0);
int oh = orig.H;
int ow = orig.W;
int dw = (int)(ow * jitter);
int dh = (int)(oh * jitter);
int pleft = (int)Utils.rand_uniform(-dw, dw);
int pright = (int)Utils.rand_uniform(-dw, dw);
int ptop = (int)Utils.rand_uniform(-dh, dh);
int pbot = (int)Utils.rand_uniform(-dh, dh);
int swidth = ow - pleft - pright;
int sheight = oh - ptop - pbot;
float sx = (float)swidth / ow;
float sy = (float)sheight / oh;
int flip = Utils.Rand.Next() % 2;
Image cropped = LoadArgs.crop_image(orig, pleft, ptop, swidth, sheight);
float dx = ((float)pleft / ow) / sx;
float dy = ((float)ptop / oh) / sy;
Image sized = LoadArgs.resize_image(cropped, w, h);
if (flip != 0)
{
LoadArgs.flip_image(sized);
}
LoadArgs.random_distort_image(sized, hue, saturation, exposure);
d.X.Vals[i] = sized.Data;
fill_truth_region(randomPaths[i], d.Y.Vals[i], classes, size, flip, dx, dy, 1.0f / sx, 1.0f / sy);
}
return(d);
}