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

From class 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()

From class java.lang.Object

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()

From interface 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.

From interface 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

From interface 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]`.