@Namespace(value="tensorflow::ops") @NoOffset @Properties(inherit=tensorflow.class) public class CropAndResize extends Pointer
crop_size
. This is more general than the
crop_to_bounding_box
op which extracts a fixed size slice from the input image
and does not allow resizing or aspect ratio change.
Returns a tensor with crops
from the input image
at positions defined at the
bounding box locations in boxes
. The cropped boxes are all resized (with
bilinear or nearest neighbor interpolation) to a fixed
size = [crop_height, crop_width]
. The result is a 4-D tensor
[num_boxes, crop_height, crop_width, depth]
. The resizing is corner aligned.
In particular, if boxes = [[0, 0, 1, 1]]
, the method will give identical
results to using tf.image.resize_bilinear()
or
tf.image.resize_nearest_neighbor()
(depends on the method
argument) with
align_corners=True
.
Arguments:
* scope: A Scope object
* image: A 4-D tensor of shape [batch, image_height, image_width, depth]
.
Both image_height
and image_width
need to be positive.
* boxes: 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.
* box_ind: 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.
* crop_size: 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.
Optional attributes (see Attrs
):
* method: A string specifying the sampling method for resizing. It can be either
"bilinear"
or "nearest"
and default to "bilinear"
. Currently two sampling
methods are supported: Bilinear and Nearest Neighbor.
* extrapolation_value: Value used for extrapolation, when applicable.
Returns:
* Output
: A 4-D tensor of shape [num_boxes, crop_height, crop_width, depth]
.Modifier and Type | Class and Description |
---|---|
static class |
CropAndResize.Attrs
Optional attribute setters for CropAndResize
|
Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter
Constructor and Description |
---|
CropAndResize(Pointer p)
Pointer cast constructor.
|
CropAndResize(Scope scope,
Input image,
Input boxes,
Input box_ind,
Input crop_size) |
CropAndResize(Scope scope,
Input image,
Input boxes,
Input box_ind,
Input crop_size,
CropAndResize.Attrs attrs) |
Modifier and Type | Method and Description |
---|---|
Input |
asInput() |
Output |
asOutput() |
Output |
crops() |
CropAndResize |
crops(Output setter) |
static CropAndResize.Attrs |
ExtrapolationValue(float x) |
static CropAndResize.Attrs |
Method(BytePointer x) |
static CropAndResize.Attrs |
Method(String x) |
Node |
node() |
Operation |
operation() |
CropAndResize |
operation(Operation setter) |
address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, getDirectBufferAddress, getPointer, getPointer, getPointer, getPointer, hashCode, interruptDeallocatorThread, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetAddress, offsetof, offsetof, parseBytes, physicalBytes, physicalBytesInaccurate, position, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, sizeof, toString, totalBytes, totalCount, totalPhysicalBytes, withDeallocator, zero
public CropAndResize(Pointer p)
Pointer(Pointer)
.public CropAndResize(@Const @ByRef Scope scope, @ByVal Input image, @ByVal Input boxes, @ByVal Input box_ind, @ByVal Input crop_size)
public Node node()
@ByVal public static CropAndResize.Attrs Method(@tensorflow.StringPiece BytePointer x)
@ByVal public static CropAndResize.Attrs Method(@tensorflow.StringPiece String x)
@ByVal public static CropAndResize.Attrs ExtrapolationValue(float x)
public CropAndResize operation(Operation setter)
public CropAndResize crops(Output setter)
Copyright © 2022. All rights reserved.