tr[:, :, 0].uniform_(seq_width_max/2, seq_length - seq_width_max/2)
tr[:, :, 1].uniform_(seq_height_min, seq_height_max)
tr[:, :, 2].uniform_(seq_width_min, seq_width_max)
tr[:, :, 0].uniform_(seq_width_max/2, seq_length - seq_width_max/2)
tr[:, :, 1].uniform_(seq_height_min, seq_height_max)
tr[:, :, 2].uniform_(seq_width_min, seq_width_max)