modellib.py 文件源码

def get_filled_box_idx(idx, top_left, bot_right):
  """Fill a box with top left and bottom right coordinates.
  Args:
    idx: [B, T, H, W, 2] or [B, H, W, 2] or [H, W, 2]
    top_left: [B, T, 2] or [B, 2] or [2]
    bot_right: [B, T, 2] or [B, 2] or [2]
  """
  ss = tf.shape(idx)
  ndims = tf.shape(ss)
  batch = tf.slice(ss, [0], ndims - 3)
  coord_shape = tf.concat(0, [batch, tf.constant([1, 1, 2])])
  top_left = tf.reshape(top_left, coord_shape)
  bot_right = tf.reshape(bot_right, coord_shape)
  lower = tf.reduce_prod(tf.to_float(idx >= top_left), ndims - 1)
  upper = tf.reduce_prod(tf.to_float(idx <= bot_right), ndims - 1)
  box = lower * upper

  return box