DecodePng

public final class DecodePng

Decode a PNG-encoded image to a uint8 or uint16 tensor.

The attr `channels` indicates the desired number of color channels for the decoded image.

Accepted values are:

  • 0: Use the number of channels in the PNG-encoded image.
  • 1: output a grayscale image.
  • 3: output an RGB image.
  • 4: output an RGBA image.
If needed, the PNG-encoded image is transformed to match the requested number of color channels.

This op also supports decoding JPEGs and non-animated GIFs since the interface is the same, though it is cleaner to use tf.io.decode_image.

Nested Classes

class DecodePng.Options Optional attributes for DecodePng  

Constants

String OP_NAME The name of this op, as known by TensorFlow core engine

Public Methods

Output<T>
asOutput()
Returns the symbolic handle of the tensor.
static DecodePng.Options
channels(Long channels)
static DecodePng<TUint8>
create(Scope scope, Operand<TString> contents, Options... options)
Factory method to create a class wrapping a new DecodePng operation using default output types.
static <T extends TNumber> DecodePng<T>
create(Scope scope, Operand<TString> contents, Class<T> dtype, Options... options)
Factory method to create a class wrapping a new DecodePng operation.
Output<T>
image()
3-D with shape `[height, width, channels]`.

Inherited Methods

org.tensorflow.op.RawOp
final boolean
equals(Object obj)
final int
hashCode()
Operation
op()
Return this unit of computation as a single Operation.
final String
toString()
boolean
equals(Object arg0)
final Class<?>
getClass()
int
hashCode()
final void
notify()
final void
notifyAll()
String
toString()
final void
wait(long arg0, int arg1)
final void
wait(long arg0)
final void
wait()
org.tensorflow.op.Op
abstract ExecutionEnvironment
env()
Return the execution environment this op was created in.
abstract Operation
op()
Return this unit of computation as a single Operation.
org.tensorflow.Operand
abstract Output<T>
asOutput()
Returns the symbolic handle of the tensor.
abstract T
asTensor()
Returns the tensor at this operand.
abstract Shape
shape()
Returns the (possibly partially known) shape of the tensor referred to by the Output of this operand.
abstract Class<T>
type()
Returns the tensor type of this operand
org.tensorflow.ndarray.Shaped
abstract int
rank()
abstract Shape
shape()
abstract long
size()
Computes and returns the total size of this container, in number of values.

Constants

public static final String OP_NAME

The name of this op, as known by TensorFlow core engine

Constant Value: "DecodePng"

Public Methods

public Output<T> asOutput ()

Returns the symbolic handle of the tensor.

Inputs to TensorFlow operations are outputs of another TensorFlow operation. This method is used to obtain a symbolic handle that represents the computation of the input.

public static DecodePng.Options channels (Long channels)

Parameters
channels Number of color channels for the decoded image.

public static DecodePng<TUint8> create (Scope scope, Operand<TString> contents, Options... options)

Factory method to create a class wrapping a new DecodePng operation using default output types.

Parameters
scope current scope
contents 0-D. The PNG-encoded image.
options carries optional attributes values
Returns
  • a new instance of DecodePng

public static DecodePng<T> create (Scope scope, Operand<TString> contents, Class<T> dtype, Options... options)

Factory method to create a class wrapping a new DecodePng operation.

Parameters
scope current scope
contents 0-D. The PNG-encoded image.
options carries optional attributes values
Returns
  • a new instance of DecodePng

public Output<T> image ()

3-D with shape `[height, width, channels]`.