Kinect for Unity中角色相对与Kinect设备的位置到屏幕中坐标位置的转换

最新推荐文章于 2022-11-28 15:28:16 发布

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最新推荐文章于 2022-11-28 15:28:16 发布

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CC 4.0 BY-SA版权

文章标签：游戏

本文链接：https://blog.youkuaiyun.com/qq_42862278/article/details/103628813

本文介绍了一种将Kinect传感器获取的人体关节位置从3D空间坐标转换到屏幕坐标的方法。通过KinectManager类，首先将关节位置映射到深度坐标，再由深度值转换至颜色坐标，最后转换为屏幕上的像素位置。

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using System.Collections;
using System.Collections.Generic;
using UnityEngine;

/***Kinect坐标转换为屏幕坐标***/

public class KinectPointToScreenPoint
{
    public static Vector3 Rec(KinectInterop.JointType trackedJoint)
    {
        KinectManager manager = KinectManager.Instance;
        if (manager && manager.IsInitialized())
        {
            int iJointIndex = (int)trackedJoint;
            if (manager.IsUserDetected())
            {
                long userId = manager.GetPrimaryUserID();

                if (manager.IsJointTracked(userId, iJointIndex))
                {
                    Vector3 jointPosV3 = manager.GetJointKinectPosition(userId, iJointIndex);
                    if (jointPosV3 != Vector3.zero)
                    {
                        //3d position to depth
                        Vector2 depthPos = manager.MapSpacePointToDepthCoords(jointPosV3);
                        ushort depthValue = manager.GetDepthForPixel((int)depthPos.x, (int)depthPos.y);

                        if (depthValue > 0)
                        {
                            //depth pos to color pos
                            Vector2 colorPos = manager.MapDepthPointToColorCoords(depthPos, depthValue);

                            float xNorm = (float)colorPos.x / manager.GetColorImageWidth();
                            float yNorm = 1.0f - (float)colorPos.y / manager.GetColorImageHeight(); //视口坐标

                            Vector3 v3 = Camera.main.ViewportToScreenPoint(new Vector3(xNorm, yNorm, 0));
                            return v3;
                        }
                    }
                }
            }
        }  
		return Vector3.zero;
    }
}