fix CropAndResize doc

pull/2823/head
xutianchun 5 years ago
parent 0cd9e4cc11
commit 77b5ae054a

@ -34,21 +34,21 @@ class CropAndResize(PrimitiveWithInfer):
Inputs:
- **x** (Tensor) - The input image must be a 4-D tensor of shape [batch, image_height, image_width, depth].
Types allowed: int8, int16, int32, int64, float16, float32, float64, uint8, uint16.
Types allowed: int8, int16, int32, int64, float16, float32, float64, uint8, uint16.
- **boxes** (Tensor) - A 2-D tensor of shape [num_boxes, 4].
The i-th row of the tensor specifies the coordinates of a box in the box_ind[i] image
and is specified in normalized coordinates [y1, x1, y2, x2]. A normalized coordinate value of y is mapped to
the image coordinate at y * (image_height - 1), so as the [0, 1] interval of normalized image height is
mapped to [0, image_height - 1] in image height coordinates. We do allow y1 > y2, in which case the sampled
crop is an up-down flipped version of the original image. The width dimension is treated similarly.
Normalized coordinates outside the [0, 1] range are allowed, in which case we use extrapolation_value to
extrapolate the input image values. Types allowd: float32.
The i-th row of the tensor specifies the coordinates of a box in the box_ind[i] image
and is specified in normalized coordinates [y1, x1, y2, x2]. A normalized coordinate value of y is mapped to
the image coordinate at y * (image_height - 1), so as the [0, 1] interval of normalized image height is
mapped to [0, image_height - 1] in image height coordinates. We do allow y1 > y2, in which case the sampled
crop is an up-down flipped version of the original image. The width dimension is treated similarly.
Normalized coordinates outside the [0, 1] range are allowed, in which case we use extrapolation_value to
extrapolate the input image values. Types allowd: float32.
- **box_index** (Tensor) - A 1-D tensor of shape [num_boxes] with int32 values in [0, batch).
The value of box_ind[i] specifies the image that the i-th box refers to. Types allowd: int32.
The value of box_ind[i] specifies the image that the i-th box refers to. Types allowd: int32.
- **crop_size** (Tensor) - Only constant value is allowd. Types allowed: int32.
A 1-D tensor of 2 elements, size = [crop_height, crop_width].
All cropped image patches are resized to this size. The aspect ratio of the image content is not preserved.
Both crop_height and crop_width need to be positive.
A 1-D tensor of 2 elements, size = [crop_height, crop_width].
All cropped image patches are resized to this size. The aspect ratio of the image content is not preserved.
Both crop_height and crop_width need to be positive.
Outputs:
A 4-D tensor of shape [num_boxes, crop_height, crop_width, depth] with type: float32.
@ -68,8 +68,8 @@ class CropAndResize(PrimitiveWithInfer):
>>> IMAGE_WIDTH = 256
>>> CHANNELS = 3
>>> image = np.random.normal(size=[BATCH_SIZE, IMAGE_HEIGHT, IMAGE_WIDTH, CHANNELS]).astype(np.float32)
>>> boxes = np.random.uniform(shape=[NUM_BOXES, 4]).astype(np.float32)
>>> box_index = np.random.uniform(shape=[NUM_BOXES], low=0, high=BATCH_SIZE).astype(np.int32)
>>> boxes = np.random.uniform(size=[NUM_BOXES, 4]).astype(np.float32)
>>> box_index = np.random.uniform(size=[NUM_BOXES], low=0, high=BATCH_SIZE).astype(np.int32)
>>> crop_size = np.array([24, 24]).astype(np.int32)
>>> crop_and_resize = CropAndResizeNet(crop_size=Tensor(crop_size))
>>> output = crop_and_resize(Tensor(image), Tensor(boxes), Tensor(box_index))

@ -41,8 +41,8 @@ def test_net_float32():
image_width = 256
channels = 3
image = np.random.normal(size=[batch_size, image_height, image_width, channels]).astype(np.float32)
boxes = np.random.uniform(shape=[num_boxes, 4]).astype(np.float32)
box_index = np.random.uniform(shape=[num_boxes], low=0, high=batch_size).astype(np.int32)
boxes = np.random.uniform(size=[num_boxes, 4]).astype(np.float32)
box_index = np.random.uniform(size=[num_boxes], low=0, high=batch_size).astype(np.int32)
crop_size = np.array([24, 24]).astype(np.int32)
net = Net(crop_size=Tensor(crop_size))
output = net(Tensor(image), Tensor(boxes), Tensor(box_index))

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