DecodePng

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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

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]`.