> For the complete documentation index, see [llms.txt](https://docs.roboflow.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.roboflow.com/workflows/developer-guide/developer-guide/kinds/image-keypoints.md).

# imagekeypoints Kind

Image keypoints detected by classical Computer Vision method.

Image keypoints detected by classical Computer Vision method

## Data representation

### External

External data representation is relevant for Workflows clients - it dictates what is the input and output format of data.

Type: `dict`

### Internal

Internal data representation is relevant for Workflows blocks creators - this is the type that will be provided by Execution Engine in runtime to the block that consumes input of this kind.

Type: `dict`

## Details

The kind represents image keypoints that are detected by classical Computer Vision methods. Underlying representation is serialised OpenCV KeyPoint object.

Examples:

```
{
    "pt": (2.429290294647217, 1197.7939453125),
    "size": 1.9633429050445557,
    "angle": 183.4322509765625,
    "response": 0.03325376659631729,
    "octave": 6423039,
    "class_id": -1
}
```