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using System;
using System.Text;
using Unity.Collections.LowLevel.Unsafe;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.XR.ARFoundation;
using UnityEngine.XR.ARSubsystems;
/// <summary>
/// This component tests getting the latest camera image
/// and converting it to RGBA format. If successful,
/// it displays the image on the screen as a RawImage
/// and also displays information about the image.
///
/// This is useful for computer vision applications where
/// you need to access the raw pixels from camera image
/// on the CPU.
///
/// This is different from the ARCameraBackground component, which
/// efficiently displays the camera image on the screen. If you
/// just want to blit the camera texture to the screen, use
/// the ARCameraBackground, or use Graphics.Blit to create
/// a GPU-friendly RenderTexture.
///
/// In this example, we get the camera image data on the CPU,
/// convert it to an RGBA format, then display it on the screen
/// as a RawImage texture to demonstrate it is working.
/// This is done as an example; do not use this technique simply
/// to render the camera image on screen.
/// </summary>
public class TestDepthImage : MonoBehaviour
{
[SerializeField]
[Tooltip("The ARHumanBodyManager which will produce frame events.")]
ARHumanBodyManager m_HumanBodyManager;
/// <summary>
/// Get or set the <c>ARHumanBodyManager</c>.
/// </summary>
public ARHumanBodyManager humanBodyManager
{
get { return m_HumanBodyManager; }
set { m_HumanBodyManager = value; }
}
[SerializeField]
RawImage m_RawImage;
/// <summary>
/// The UI RawImage used to display the image on screen.
/// </summary>
public RawImage rawImage
{
get { return m_RawImage; }
set { m_RawImage = value; }
}
[SerializeField]
Text m_ImageInfo;
/// <summary>
/// The UI Text used to display information about the image on screen.
/// </summary>
public Text imageInfo
{
get { return m_ImageInfo; }
set { m_ImageInfo = value; }
}
void LogTextureInfo(StringBuilder stringBuilder, string textureName, Texture2D texture)
{
stringBuilder.AppendFormat("texture : {0}\n", textureName);
if (texture == null)
{
stringBuilder.AppendFormat(" <null>\n");
}
else
{
stringBuilder.AppendFormat(" format : {0}\n", texture.format.ToString());
stringBuilder.AppendFormat(" width : {0}\n", texture.width);
stringBuilder.AppendFormat(" height : {0}\n", texture.height);
stringBuilder.AppendFormat(" mipmap : {0}\n", texture.mipmapCount);
}
}
void Update()
{
var subsystem = m_HumanBodyManager.subsystem;
if (subsystem == null)
{
if (m_ImageInfo != null)
{
m_ImageInfo.text = "Human Segmentation not supported.";
}
return;
}
StringBuilder sb = new StringBuilder();
Texture2D humanStencil = m_HumanBodyManager.humanStencilTexture;
Texture2D humanDepth = m_HumanBodyManager.humanDepthTexture;
LogTextureInfo(sb, "stencil", humanStencil);
LogTextureInfo(sb, "depth", humanDepth);
if (m_ImageInfo != null)
{
m_ImageInfo.text = sb.ToString();
}
else
{
Debug.Log(sb.ToString());
}
// To use the stencil, be sure the HumanSegmentationStencilMode property on the ARHumanBodyManager is set to a
// non-disabled value.
m_RawImage.texture = humanStencil;
// To use the depth, be sure the HumanSegmentationDepthMode property on the ARHumanBodyManager is set to a
/// non-disabled value.
// m_RawImage.texture = eventArgs.humanDepth;
}
}
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