> For the complete documentation index, see [llms.txt](https://docs.augelab.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.augelab.com/function-blocks/blocks-reference/image-transformations/operations/rotate-image-angle.md).

# Rotate Image Angle

This function block rotates an incoming image by a user-defined angle. You can control the angle via the on-block slider or feed an external numeric value into its input socket. You may also choose the interpolation method and optionally crop resulting background areas.

## 📥 Inputs (sockets) <a href="#inputs" id="inputs"></a>

`Image Any` Provide the source image to be rotated.

(You may optionally provide a numeric angle via the angle socket if available on your canvas to override the on-block slider.)

## 📤 Outputs (sockets) <a href="#outputs" id="outputs"></a>

`Image Any` The rotated (and optionally cropped) output image.

`Angle` The numeric rotation angle applied (degrees).

## 🕹️ Controls <a href="#controls" id="controls"></a>

`Angle` Use the slider to set the desired rotation in degrees. The slider also accepts an external numeric input if you prefer programmatic control.

`Interpolation Method` Choose how pixels are interpolated during rotation. Options typically include nearest and linear methods; pick the one that balances quality and speed for your case.

`Crop Background` Toggle this to remove black/empty regions introduced by rotation. When enabled, the block crops the rotated image to the largest central area without background artifacts.

## 🎨 Features <a href="#features" id="features"></a>

* Live angle control via an adjustable slider or external numeric input.
* Selectable interpolation for visual quality vs. speed trade-offs.
* Optional automatic cropping to remove background areas created by rotation.
* Outputs both the processed image and the applied angle value for downstream use.

## 📝 How it runs <a href="#usage" id="usage"></a>

1. Provide an image to the `Image Any` input socket or feed an image-producing block (for example, `Camera USB` or `Load Image From Path`).
2. Set the angle using the `Angle` slider or connect a numeric source to the angle input.
3. Choose the preferred `Interpolation Method`.
4. Toggle `Crop Background` on if you want the output trimmed to avoid black corners.
5. Run the flow — the block outputs the rotated image and the final angle value.

## 💡 Tips and Tricks <a href="#tips-and-tricks" id="tips-and-tricks"></a>

* For live camera feeds, combine with `Camera USB`, `Camera IP`, or `Stream Reader` as your image source and preview results with `Show Image`.
* To focus rotation on a specific area, crop first with `Image ROI Select` and then rotate the cropped region.
* To avoid visible artifacts on noisy images, try `Denoising` before rotation.
* Save processed images using `Image Logger` or `Image Write` for record keeping.

## 🛠️ Troubleshooting <a href="#troubleshooting" id="troubleshooting"></a>

* If you see black corners after rotation, enable `Crop Background` to remove them.
* If rotated images look blocky or contain interpolation artifacts, switch the `Interpolation Method` to a higher-quality option (for example, from nearest to linear).
* If processing is slow or uses too much memory, reduce input size with `Image Resizer` before rotating.
* When providing angle via an external source, ensure the value is a valid numeric degree amount; otherwise the visual result may be unexpected.