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tensorflow:: ops:: EncodeJpeg
#include <image_ops.h>
Codifique uma imagem em JPEG.
Resumo
image
é um tensor 3-D uint8 de forma [height, width, channels]
.
O format
attr pode ser usado para substituir o formato de cor da saída codificada. Os valores podem ser:
- `''
: Use a default format based on the number of channels in the image. *
tons de cinza : Output a grayscale JPEG image. The
dimension of
canais da imagem must be 1. *
rgb : Output an RGB JPEG image. The
dimension of
canais da imagem deve ser 3.
Se o format
não for especificado ou for a string vazia, um formato padrão é escolhido em função do número de canais na image
:
- 1: Saída de uma imagem em tons de cinza.
- 3: Saída de uma imagem RGB.
Argumentos:
- scope: um objeto Scope
- imagem: 3-D com forma
[height, width, channels]
.
Atributos opcionais (consulte Attrs
):
- formato: formato de imagem por pixel.
- qualidade: Qualidade da compressão de 0 a 100 (maior é melhor e mais lento).
- progressivo: Se True, crie um JPEG que carregue progressivamente (de grosso a fino).
- optimize_size: Se True, gaste CPU/RAM para reduzir o tamanho sem alterar a qualidade.
- chroma_downsampling: consulte http://en.wikipedia.org/wiki/Chroma_subsampling .
- Density_unit: Unidade usada para especificar
x_density
e y_density
: pixels por polegada ( 'in'
) ou centímetro ( 'cm'
). - x_density: Pixels horizontais por unidade de densidade.
- y_density: Pixels verticais por unidade de densidade.
- xmp_metadata: Se não estiver vazio, incorpore esses metadados XMP no cabeçalho da imagem.
Devoluções:
-
Output
: 0-D. Imagem codificada em JPEG.
Atributos públicos
Funções públicas
nó
::tensorflow::Node * node() const
operator::tensorflow::Input() const
operador::tensorflow::Saída
operator::tensorflow::Output() const
Funções estáticas públicas
CromaDownsampling
Attrs ChromaDownsampling(
bool x
)
Unidade de densidade
Attrs DensityUnit(
StringPiece x
)
Attrs Format(
StringPiece x
)
OtimizarTamanho
Attrs OptimizeSize(
bool x
)
Progressivo
Attrs Progressive(
bool x
)
Qualidade
Attrs Quality(
int64 x
)
XDensity
Attrs XDensity(
int64 x
)
Attrs XmpMetadata(
StringPiece x
)
YDensidade
Attrs YDensity(
int64 x
)
Exceto em caso de indicação contrária, o conteúdo desta página é licenciado de acordo com a Licença de atribuição 4.0 do Creative Commons, e as amostras de código são licenciadas de acordo com a Licença Apache 2.0. Para mais detalhes, consulte as políticas do site do Google Developers. Java é uma marca registrada da Oracle e/ou afiliadas.
Última atualização 2022-08-30 UTC.
[null,null,["Última atualização 2022-08-30 UTC."],[],[],null,["# tensorflow::ops::EncodeJpeg Class Reference\n\ntensorflow::ops::EncodeJpeg\n===========================\n\n`#include \u003cimage_ops.h\u003e`\n\nJPEG-encode an image.\n\nSummary\n-------\n\n`image` is a 3-D uint8 [Tensor](/versions/r2.1/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of shape `[height, width, channels]`.\n\nThe attr `format` can be used to override the color format of the encoded output. Values can be:\n\n\n- \\`''`: Use a default format based on the number of channels in the image. *`grayscale`: `[Output](/versions/r2.1/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output)` a grayscale JPEG image. The`channels`dimension of`image`must be 1. *`rgb`: `[Output](/versions/r2.1/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output)` an RGB JPEG image. The`channels`dimension of`image\\` must be 3.\n\n\u003cbr /\u003e\n\nIf `format` is not specified or is the empty string, a default format is picked in function of the number of channels in `image`:\n\n\n- 1: [Output](/versions/r2.1/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output) a grayscale image.\n- 3: [Output](/versions/r2.1/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output) an RGB image.\n\n\u003cbr /\u003e\n\nArguments:\n\n- scope: A [Scope](/versions/r2.1/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object\n- image: 3-D with shape `[height, width, channels]`.\n\n\u003cbr /\u003e\n\nOptional attributes (see [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs)):\n\n- format: Per pixel image format.\n- quality: Quality of the compression from 0 to 100 (higher is better and slower).\n- progressive: If True, create a JPEG that loads progressively (coarse to fine).\n- optimize_size: If True, spend CPU/RAM to reduce size with no quality change.\n- chroma_downsampling: See \u003chttp://en.wikipedia.org/wiki/Chroma_subsampling\u003e.\n- density_unit: Unit used to specify `x_density` and `y_density`: pixels per inch (`'in'`) or centimeter (`'cm'`).\n- x_density: Horizontal pixels per density unit.\n- y_density: Vertical pixels per density unit.\n- xmp_metadata: If not empty, embed this XMP metadata in the image header.\n\n\u003cbr /\u003e\n\nReturns:\n\n- [Output](/versions/r2.1/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output): 0-D. JPEG-encoded image.\n\n\u003cbr /\u003e\n\n| ### Constructors and Destructors ||\n|---|---|\n| [EncodeJpeg](#classtensorflow_1_1ops_1_1_encode_jpeg_1a0ca40e89fe38209cf7585aa75db5253b)`(const ::`[tensorflow::Scope](/versions/r2.1/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r2.1/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` image)` ||\n| [EncodeJpeg](#classtensorflow_1_1ops_1_1_encode_jpeg_1a79419850b6852e9fef1de27ccaeb02c9)`(const ::`[tensorflow::Scope](/versions/r2.1/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r2.1/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` image, const `[EncodeJpeg::Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs)` & attrs)` ||\n\n| ### Public attributes ||\n|-----------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|\n| [contents](#classtensorflow_1_1ops_1_1_encode_jpeg_1a993f3e068d50550dccdee87eab14bf46) | `::`[tensorflow::Output](/versions/r2.1/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output) |\n| [operation](#classtensorflow_1_1ops_1_1_encode_jpeg_1a4a6ed1dc754ddbe8448db94af6b97903) | [Operation](/versions/r2.1/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation) |\n\n| ### Public functions ||\n|-----------------------------------------------------------------------------------------------------------------------|------------------------|\n| [node](#classtensorflow_1_1ops_1_1_encode_jpeg_1a184e73345337120296e192103c1faa1b)`() const ` | `::tensorflow::Node *` |\n| [operator::tensorflow::Input](#classtensorflow_1_1ops_1_1_encode_jpeg_1abb0cb093da0dd1edcd437b7a5a6a501e)`() const ` | ` ` ` ` |\n| [operator::tensorflow::Output](#classtensorflow_1_1ops_1_1_encode_jpeg_1a0b066a9fb1c91437f844cb0056d6bed9)`() const ` | ` ` ` ` |\n\n| ### Public static functions ||\n|------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------|\n| [ChromaDownsampling](#classtensorflow_1_1ops_1_1_encode_jpeg_1a955a859ac255af73650246c2be60efa6)`(bool x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [DensityUnit](#classtensorflow_1_1ops_1_1_encode_jpeg_1aac4afe05ce09cebfce9f62e2b733243d)`(StringPiece x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [Format](#classtensorflow_1_1ops_1_1_encode_jpeg_1a357af3801d374097cb3ab666711f727c)`(StringPiece x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [OptimizeSize](#classtensorflow_1_1ops_1_1_encode_jpeg_1a363d3434cd5e13cfe6646e5297e55617)`(bool x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [Progressive](#classtensorflow_1_1ops_1_1_encode_jpeg_1ad0bc11703455f6452e78d3e9290bfa30)`(bool x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [Quality](#classtensorflow_1_1ops_1_1_encode_jpeg_1a8f272a8cab58219e417e67bad1538ee9)`(int64 x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [XDensity](#classtensorflow_1_1ops_1_1_encode_jpeg_1aaf12a81368799b401dbfa78b22eb2e0f)`(int64 x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [XmpMetadata](#classtensorflow_1_1ops_1_1_encode_jpeg_1aba918bc2d45a12d7eee5dab85c56badb)`(StringPiece x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n| [YDensity](#classtensorflow_1_1ops_1_1_encode_jpeg_1a34fd19ec04cb0d7801aa09095585eb64)`(int64 x)` | [Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs#structtensorflow_1_1ops_1_1_encode_jpeg_1_1_attrs) |\n\n| ### Structs ||\n|----------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------|\n| [tensorflow::ops::EncodeJpeg::Attrs](/versions/r2.1/api_docs/cc/struct/tensorflow/ops/encode-jpeg/attrs) | Optional attribute setters for [EncodeJpeg](/versions/r2.1/api_docs/cc/class/tensorflow/ops/encode-jpeg#classtensorflow_1_1ops_1_1_encode_jpeg). |\n\nPublic attributes\n-----------------\n\n### contents\n\n```text\n::tensorflow::Output contents\n``` \n\n### operation\n\n```text\nOperation operation\n``` \n\nPublic functions\n----------------\n\n### EncodeJpeg\n\n```gdscript\n EncodeJpeg(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input image\n)\n``` \n\n### EncodeJpeg\n\n```gdscript\n EncodeJpeg(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input image,\n const EncodeJpeg::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### ChromaDownsampling\n\n```text\nAttrs ChromaDownsampling(\n bool x\n)\n``` \n\n### DensityUnit\n\n```text\nAttrs DensityUnit(\n StringPiece x\n)\n``` \n\n### Format\n\n```text\nAttrs Format(\n StringPiece x\n)\n``` \n\n### OptimizeSize\n\n```text\nAttrs OptimizeSize(\n bool x\n)\n``` \n\n### Progressive\n\n```text\nAttrs Progressive(\n bool x\n)\n``` \n\n### Quality\n\n```text\nAttrs Quality(\n int64 x\n)\n``` \n\n### XDensity\n\n```text\nAttrs XDensity(\n int64 x\n)\n``` \n\n### XmpMetadata\n\n```text\nAttrs XmpMetadata(\n StringPiece x\n)\n``` \n\n### YDensity\n\n```text\nAttrs YDensity(\n int64 x\n)\n```"]]