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

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]`.