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tensoreflusso:: ops:: DecodePng
#include <image_ops.h> Decodifica un'immagine con codifica PNG in un tensore uint8 o uint16.
Riepilogo
I channels attr indicano il numero desiderato di canali di colore per l'immagine decodificata.
I valori accettati sono:
- 0: utilizza il numero di canali nell'immagine con codifica PNG.
- 1: genera un'immagine in scala di grigi.
- 3: emette un'immagine RGB.
- 4: emette un'immagine RGBA.
Se necessario, l'immagine con codifica PNG viene trasformata per corrispondere al numero richiesto di canali di colore.
Questa operazione supporta anche la decodifica di JPEG e GIF non animate poiché l'interfaccia è la stessa, sebbene sia più pulito utilizzare tf.image.decode_image .
Argomenti:
- scope: un oggetto Scope
- contenuto: 0-D. L'immagine con codifica PNG.
Attributi facoltativi (vedi Attrs ):
- canali: numero di canali di colore per l'immagine decodificata.
Resi:
-
Output : 3-D con forma [height, width, channels] .
Funzioni pubbliche statiche |
|---|
Channels (int64 x) | |
Dtype (DataType x) | |
Attributi pubblici
Funzioni pubbliche
nodo
::tensorflow::Node * node() const
operator::tensorflow::Input() const
operatore::tensorflow::Output
operator::tensorflow::Output() const
Funzioni pubbliche statiche
Canali
Attrs Channels(
int64 x
)
Tipo D
Attrs Dtype(
DataType x
)
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Ultimo aggiornamento 2025-07-26 UTC.
[null,null,["Ultimo aggiornamento 2025-07-26 UTC."],[],[],null,["# tensorflow::ops::DecodePng Class Reference\n\ntensorflow::ops::DecodePng\n==========================\n\n`#include \u003cimage_ops.h\u003e`\n\nDecode a PNG-encoded image to a uint8 or uint16 tensor.\n\nSummary\n-------\n\nThe attr `channels` indicates the desired number of color channels for the decoded image.\n\nAccepted values are:\n\n\n- 0: Use the number of channels in the PNG-encoded image.\n- 1: output a grayscale image.\n- 3: output an RGB image.\n- 4: output an RGBA image.\n\n\u003cbr /\u003e\n\nIf needed, the PNG-encoded image is transformed to match the requested number of color channels.\n\nThis op also supports decoding JPEGs and non-animated GIFs since the interface is the same, though it is cleaner to use `tf.image.decode_image`.\n\nArguments:\n\n- scope: A [Scope](/versions/r1.15/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object\n- contents: 0-D. The PNG-encoded image.\n\n\u003cbr /\u003e\n\nOptional attributes (see [Attrs](/versions/r1.15/api_docs/cc/struct/tensorflow/ops/decode-png/attrs#structtensorflow_1_1ops_1_1_decode_png_1_1_attrs)):\n\n- channels: Number of color channels for the decoded image.\n\n\u003cbr /\u003e\n\nReturns:\n\n- [Output](/versions/r1.15/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output): 3-D with shape `[height, width, channels]`.\n\n\u003cbr /\u003e\n\n| ### Constructors and Destructors ||\n|---|---|\n| [DecodePng](#classtensorflow_1_1ops_1_1_decode_png_1ab7adeeb5aa6b10893fb6063ee8d6fc87)`(const ::`[tensorflow::Scope](/versions/r1.15/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r1.15/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` contents)` ||\n| [DecodePng](#classtensorflow_1_1ops_1_1_decode_png_1aa2df55e8e1eed056df69f127ca4cba25)`(const ::`[tensorflow::Scope](/versions/r1.15/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r1.15/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` contents, const `[DecodePng::Attrs](/versions/r1.15/api_docs/cc/struct/tensorflow/ops/decode-png/attrs#structtensorflow_1_1ops_1_1_decode_png_1_1_attrs)` & attrs)` ||\n\n| ### Public attributes ||\n|----------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------|\n| [image](#classtensorflow_1_1ops_1_1_decode_png_1a493e0f58c502e83895b5ab8df3ed277c) | `::`[tensorflow::Output](/versions/r1.15/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output) |\n| [operation](#classtensorflow_1_1ops_1_1_decode_png_1ac11da6e89a194ee86e7a82442fb33ed4) | [Operation](/versions/r1.15/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation) |\n\n| ### Public functions ||\n|----------------------------------------------------------------------------------------------------------------------|------------------------|\n| [node](#classtensorflow_1_1ops_1_1_decode_png_1adea6247b44969accb1513a6b237bd2d3)`() const ` | `::tensorflow::Node *` |\n| [operator::tensorflow::Input](#classtensorflow_1_1ops_1_1_decode_png_1a1449fe5081528b4cb081cb224ba20d96)`() const ` | ` ` ` ` |\n| [operator::tensorflow::Output](#classtensorflow_1_1ops_1_1_decode_png_1a19025343d7746c9091afcf01dbba03fd)`() const ` | ` ` ` ` |\n\n| ### Public static functions ||\n|--------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------|\n| [Channels](#classtensorflow_1_1ops_1_1_decode_png_1ac0322c095dfd2d11bca81c46b421847a)`(int64 x)` | [Attrs](/versions/r1.15/api_docs/cc/struct/tensorflow/ops/decode-png/attrs#structtensorflow_1_1ops_1_1_decode_png_1_1_attrs) |\n| [Dtype](#classtensorflow_1_1ops_1_1_decode_png_1a656dedb17c75247c916d54efef9fb4f6)`(DataType x)` | [Attrs](/versions/r1.15/api_docs/cc/struct/tensorflow/ops/decode-png/attrs#structtensorflow_1_1ops_1_1_decode_png_1_1_attrs) |\n\n| ### Structs ||\n|---------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------|\n| [tensorflow::ops::DecodePng::Attrs](/versions/r1.15/api_docs/cc/struct/tensorflow/ops/decode-png/attrs) | Optional attribute setters for [DecodePng](/versions/r1.15/api_docs/cc/class/tensorflow/ops/decode-png#classtensorflow_1_1ops_1_1_decode_png). |\n\nPublic attributes\n-----------------\n\n### image\n\n```text\n::tensorflow::Output image\n``` \n\n### operation\n\n```text\nOperation operation\n``` \n\nPublic functions\n----------------\n\n### DecodePng\n\n```gdscript\n DecodePng(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input contents\n)\n``` \n\n### DecodePng\n\n```gdscript\n DecodePng(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input contents,\n const DecodePng::Attrs & attrs\n)\n``` \n\n### node\n\n```gdscript\n::tensorflow::Node * node() const \n``` \n\n### operator::tensorflow::Input\n\n```gdscript\n operator::tensorflow::Input() const \n``` \n\n### operator::tensorflow::Output\n\n```gdscript\n operator::tensorflow::Output() const \n``` \n\nPublic static functions\n-----------------------\n\n### Channels\n\n```text\nAttrs Channels(\n int64 x\n)\n``` \n\n### Dtype\n\n```carbon\nAttrs Dtype(\n DataType x\n)\n```"]]
