# TryAcquireSceneSegmentationChannelCpuImage

Source: https://www.nianticspatial.com/docs/api/unity/NianticSpatial.NSDK.AR.XRSubsystems.XRSceneSegmentationSubsystem.TryAcquireSceneSegmentationChannelCpuImage/

TryAcquireSceneSegmentationChannelCpuImage
Acquire the latest semantic channel CPU image.

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## Declaration

public bool TryAcquireSceneSegmentationChannelCpuImage(SceneSegmentationChannel channel, out XRCpuImage cpuImage, out Matrix4x4 samplerMatrix, Nullable<XRCameraParams> cameraParams = null)

#### Summary

Acquire the latest semantic channel CPU image.

#### Returns

Returns true if an XRCpuImage was successfully acquired. Returns false otherwise.

#### Throws

NotSupportedException -- Thrown if the implementation does not support semantic channels CPU images.

### Parameters

| Name | Type | Summary |
| --- | --- | --- |
| channel | SceneSegmentationChannel | The semantics channel to acquire. |
| cpuImage | XRCpuImage | The resulting XRCpuImage. The XRCpuImage must be disposed by the caller. |
| samplerMatrix | Matrix4x4 | The matrix that transforms from normalized viewport coordinates to normalized image coordinates. |
| cameraParams | Nullable<XRCameraParams> | Describes the viewport the image is to be displayed on. |

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