tensorflow/models · error · ValueError

scale is {}, but outer box scale must be greater than 1.0.

Error message

scale is {}, but outer box scale must be greater than 1.0.

What it means

Error "scale is {}, but outer box scale must be greater than 1.0." thrown in tensorflow/models.

Source

Thrown at official/legacy/detection/utils/box_utils.py:237

def compute_outer_boxes(boxes, image_shape, scale=1.0):
  """Compute outer box encloses an object with a margin.

  Args:
    boxes: a tensor whose last dimension is 4 representing the coordinates of
      boxes in ymin, xmin, ymax, xmax order.
    image_shape: a list of two integers, a two-element vector or a tensor such
      that all but the last dimensions are `broadcastable` to `boxes`. The last
      dimension is 2, which represents [height, width].
    scale: a float number specifying the scale of output outer boxes to input
      `boxes`.

  Returns:
    outer_boxes: a tensor whose shape is the same as `boxes` representing the
      outer boxes.
  """
  if scale < 1.0:
    raise ValueError(
        'scale is {}, but outer box scale must be greater than 1.0.'.format(
            scale))
  centers_y = (boxes[..., 0] + boxes[..., 2]) / 2.0
  centers_x = (boxes[..., 1] + boxes[..., 3]) / 2.0
  box_height = (boxes[..., 2] - boxes[..., 0]) * scale
  box_width = (boxes[..., 3] - boxes[..., 1]) * scale
  outer_boxes = tf.stack([
      centers_y - box_height / 2.0, centers_x - box_width / 2.0,
      centers_y + box_height / 2.0, centers_x + box_width / 2.0
  ],
                         axis=1)
  outer_boxes = clip_boxes(outer_boxes, image_shape)
  return outer_boxes


def encode_boxes(boxes, anchors, weights=None):
  """Encode boxes to targets.

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/legacy/detection/utils/box_utils.py:237 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of tensorflow/models@e006f5f0d5 (2026-08-24). Data as JSON: /api/errors/b7932aa81da27cec. Report an issue: GitHub.