# tensorflow::ops::EncodePng Class Reference

# tensorflow::ops::EncodePng

`#include <image_ops.h>`

PNG-encode an image.

## Summary

`image` is a 3-D uint8 or uint16 [Tensor](https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of shape `[height, width, channels]` where `channels` is:


- 1: for grayscale.
- 2: for grayscale + alpha.
- 3: for RGB.
- 4: for RGBA.

<br />

The ZLIB compression level, `compression`, can be -1 for the PNG-encoder default or a value from 0 to 9. 9 is the highest compression level, generating the smallest output, but is slower.

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- image: 3-D with shape `[height, width, channels]`.

<br />

Optional attributes (see `https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/encode-png/attrs#structtensorflow_1_1ops_1_1_encode_png_1_1_attrs`):

- compression: Compression level.

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output`: 0-D. PNG-encoded image.

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1a1dd56a89fbfdf0a35eb444d4342b2c7a(const ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input image)` ||
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1a3f8275d8de85c565db8baef06d518dfa(const ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input image, const https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/encode-png/attrs#structtensorflow_1_1ops_1_1_encode_png_1_1_attrs & attrs)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1aac6f3548cb8e0539d4e65ddba93ac4b0` | `::https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1a3dd11638d8d7a6caa5c0151f099abff7` | `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |

| ### Public functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1a19512289f1f780298ec73b5fd6f54ce4() const ` | `::tensorflow::Node *` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1aece039de4b9b0ff1b8b1462ceae15a1b() const ` | ` `` ` |
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1ac1a34a63520602afd8ee1c203bc2ba30() const ` | ` `` ` |

| ### Public static functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png_1ab763cfa8c279c172c2ee539abdad9338(int64 x)` | `https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/encode-png/attrs#structtensorflow_1_1ops_1_1_encode_png_1_1_attrs` |

| ### Structs ||
|---|---|
| [tensorflow::ops::EncodePng::Attrs](https://www.tensorflow.org/versions/r2.3/api_docs/cc/struct/tensorflow/ops/encode-png/attrs) | Optional attribute setters for [EncodePng](https://www.tensorflow.org/versions/r2.3/api_docs/cc/class/tensorflow/ops/encode-png#classtensorflow_1_1ops_1_1_encode_png). |

## Public attributes

### contents

```
::tensorflow::Output contents
```

### operation

```
Operation operation
```

## Public functions

### EncodePng

```
 EncodePng(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input image
)
```

### EncodePng

```
 EncodePng(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input image,
  const EncodePng::Attrs & attrs
)
```

### node

```
::tensorflow::Node * node() const 
```

### operator::tensorflow::Input

```
 operator::tensorflow::Input() const 
```

### operator::tensorflow::Output

```
 operator::tensorflow::Output() const 
```

## Public static functions

### Compression

```
Attrs Compression(
  int64 x
)
```