永年网站建设,创建全国文明城市总结,wordpress更换背景,网站的外链是什么1 rtsp 接入 我们使用unity UE 等三维渲染引擎中使用c编写插件来接入rtsp 视频。同时做融合的时候#xff0c;和背景的三维颜色要一致#xff0c;这就要使用视频融合修正技术。包括亮度#xff0c;对比度#xff0c;饱和度的修正。在单纯颜色上的修正可以简单使用rgb-…1 rtsp 接入 我们使用unity UE 等三维渲染引擎中使用c编写插件来接入rtsp 视频。同时做融合的时候和背景的三维颜色要一致这就要使用视频融合修正技术。包括亮度对比度饱和度的修正。在单纯颜色上的修正可以简单使用rgb-hsv去修改这里不做累赘说明了。 2 播放技术 使用unity 的纹理渲染来播放多路 视频视频接入最大可达到30路同时在untiy UE5 中渲染。播放后有很多视频的颜色不一致如何调整颜色成了一个问题 3 untiy 渲染过程 建立一个材质如命名为m2 将m2 赋值给我们的面片如pp 接下来创建一个shader控制渲染的亮度对比度饱和度分别是 Brightness, Saturation, Contrast, unity shader的基础不再啰嗦各位可以稍稍看一下不难。 Shader self/BrightnessSaturationAndContrast {Properties{_MainTex (Base(RGB, 2D) white {}//从脚本传递更好这里可以直接省略这些值的展示_Brightness (Brightness, float) 1_Saturation (Saturation, float) 1_Contrast (Contrast, float) 1}SubShader{Pass{//关闭深度写入//ZTest Always Cull Off Zwrite OffCGPROGRAM#pragma vertex vert#pragma fragment frag#include UnityCG.cginc//propertiessampler2D _MainTex;half _Brightness;half _Saturation;half _Contrast;struct v2f {float4 pos : SV_POSITION;half2 uv : TEXCOORD0; };//使用了内置的appdata_img结构体作为顶点着色器的输入v2f vert(appdata_img v) {v2f o;o.pos UnityObjectToClipPos(v.vertex);o.uv v.texcoord;return o;}fixed4 frag(v2f i) : SV_Target {//获得屏幕图像的采样fixed4 renderTex tex2D(_MainTex, i.uv);//亮度fixed3 finalColor renderTex.rgb * _Brightness;//饱和度fixed luminance 0.2125 * renderTex.r 0.7154 * renderTex.g 0.0721 * renderTex.b; //计算该像素的亮度值fixed3 luminanceColor fixed3(luminance, luminance, luminance); //创建饱和度为0的颜色finalColor lerp(luminanceColor, finalColor, _Saturation);//contrastfixed3 avgColor fixed3(0.5, 0.5, 0.5);finalColor lerp(avgColor, finalColor, _Contrast);return fixed4(finalColor, renderTex.a);}ENDCG}}FallBack Off }写好shader以后 写一个脚本调入我们的c#脚本脚本一为控制我们的c插件二是可以修改,以下的插件脚本负责调入c 的插件插件会在线程里面启动获取图像赋值给面片。插件本身可以接入实时视频播放视频倒放视频支持国标gb28181和onvif协议可以支持矫正视频支持多组矫正参数同时增加三个变量改变亮度对比度饱和度便于在里面实时修改观察。 //author: 钱波 using System; using System.Text; using System.Threading; using System.Collections; using UnityEngine; using System.Runtime.InteropServices; using UnityEngine.UI; using System.Linq; using System.Collections.Generic; using Unity.VisualScripting; using System.IO;[StructLayout(LayoutKind.Sequential)] public struct FRAME {public int width;public int height;public int len;public IntPtr Frame;public IntPtr data;//public byte[] data;//[MarshalAs(UnmanagedType.LPArray)] } [StructLayout(LayoutKind.Sequential)] public struct PARAM {public double p1;public double p2;public double p3;public double p4;public double p5;public double p6;public double p7;public double p8;public double p9;public double c1;public double c2;public double c3;public double c4;public double c5; }public class rtspin : MonoBehaviour {[DllImport(rtspPlugin)]public static extern bool rtsp_test([MarshalAs(UnmanagedType.LPStr)] string url, int isnv12);[DllImport(rtspPlugin)]public static extern bool rtsp_test_data([MarshalAs(UnmanagedType.LPStr)] string url,[MarshalAs(UnmanagedType.LPArray)] byte[] data, ref FRAME frame);[DllImport(rtspPlugin)]public static extern bool rtsp_test_data_nv12([MarshalAs(UnmanagedType.LPStr)] string url,[MarshalAs(UnmanagedType.LPArray)] byte[] data0, [MarshalAs(UnmanagedType.LPArray)] byte[] data1);[DllImport(rtspPlugin)]public static extern void rtsp_test_stop([MarshalAs(UnmanagedType.LPStr)] string url);[DllImport(rtspPlugin)]public static extern void rtsp_test_setparam([MarshalAs(UnmanagedType.LPStr)] string url, ref PARAM param);static string[] stringArray {rtsp://127.0.0.1/front.mkv };static string[] stringPlanes { pp};//Texture2D[] texture2Ds;int w1 1920;int h1 1080;int number 1;[Range(0.0f, 3.0f)]public float brightness 1.0f;[Range(0.0f, 3.0f)]public float saturation 1.0f;[Range(0.0f, 3.0f)]public float contrast 1.0f;public Material briSatConMaterial;class cmd{public int v_w1 1920;public int v_h1 1080;public byte[] v_data;public Texture2D v_texture2Ds;public cmd(){v_data new byte[v_w1 * v_h1 * 3];v_texture2Ds new Texture2D(v_w1, v_h1, TextureFormat.RGB24, false);//RGB24}}PARAM v_param;//byte[][] v_datas;Dictionaryint, cmd hashMap_datas new Dictionaryint, cmd();//byte[][] hashMap_datas;void rtspThreading(string url){Debug.Log(url);rtsp_test(url, 1);}void Start(){//string path Application.dataPath /rtsp.txt;//path path.Replace(/, \\);//if (File.Exists(path))//{// Debug.Log(FileExists);// stringArray File.ReadAllLines(path);//}//else//{// Debug.Log(FileNotExists);// File.CreateText(path);//}stringArray[0] rtsp://127.0.0.1/front.mkv;for (int i 0; i number; i){cmd c1 new cmd();hashMap_datas.Add(i, c1);}v_param new PARAM();//v_param.p1 6.5746697810243404e002;//v_param.p2 0.0;//v_param.p3 3.1950000000000000e002;//v_param.p4 0.0;//v_param.p5 6.5746697810243404e002;//v_param.p6 2.3950000000000000e002;//v_param.p7 0.0;//v_param.p8 0.0;//v_param.p9 1.0;//v_param.c1 -0.5180232701824102559;//v_param.c2 0.5071524380583312119;//v_param.c3 0.0;//v_param.c4 0.0;//v_param.c5 -0.5784359684793970446;//1281.48 0 975.5 0 1997.48 0 0 0 1 -0.6 0.4 0.1 0 -0.198v_param.p1 1281.48;v_param.p2 0.0;v_param.p3 975.5;v_param.p4 0.0;v_param.p5 1997.48;v_param.p6 0.0;v_param.p7 0.0;v_param.p8 0.0;v_param.p9 1.0;v_param.c1 -0.6;v_param.c2 0.4;v_param.c3 0.1;v_param.c4 0.0;v_param.c5 -0.198;GameObject go GameObject.Find(pp);briSatConMaterial go.GetComponentMeshRenderer().material;}private void OnGUI(){if (GUI.Button(new Rect(120, 10, 80, 30), 开始线程)){Debug.Log(开始rtsp......);for (int i 0; i number; i){int currentIndex i;Thread rtspthread1 new Thread(() rtspThreading(stringArray[currentIndex]));rtspthread1.Start();Thread.Sleep(1);}}//绘制按钮以及按下断开连接按钮发送断开连接请求if (GUI.Button(new Rect(210, 10, 80, 30), 结束线程)){Debug.Log(结束rtsp......);for (int i 0; i number; i){int currentIndex i;rtsp_test_stop(stringArray[currentIndex]);}}}//float delta_x, delta_y, delta_z; //计算移动量//float distance 5;//float ZoomSpeed 5f; //拉近拉远速度//public bool isFar true;void Update(){FRAME frame new FRAME();if (briSatConMaterial ! null){briSatConMaterial.SetFloat(_Brightness, brightness);briSatConMaterial.SetFloat(_Saturation, saturation);briSatConMaterial.SetFloat(_Contrast, contrast);}for (int i 0; i number; i){if (rtsp_test_data(stringArray[i], hashMap_datas[i].v_data, ref frame)){rtsp_test_setparam(stringArray[i], ref v_param);//Texture2D original new Texture2D(w1, h1, TextureFormat.RGB24, false);//original.LoadRawTextureData(hashMap_datas[i].v_data);//FlipTexture(original, hashMap_datas[i].v_texture2Ds);hashMap_datas[i].v_texture2Ds.LoadRawTextureData(hashMap_datas[i].v_data);hashMap_datas[i].v_texture2Ds.Apply();GameObject go GameObject.Find(stringPlanes[i]);go.GetComponentMeshRenderer().material.mainTexture hashMap_datas[i].v_texture2Ds;}}}void OnDestroy(){Debug.Log(Destory, 结束rtsp......);for (int i 0; i number; i){int currentIndex i;rtsp_test_stop(stringArray[currentIndex]);}} }结果 点击开始播放rtsp线程开始播放inspector里面可以调整三个值可以直观地看到视频播放的亮度和对比度饱和度的改变。 修改一下亮度 同时修改三个参数的变化